{"title":"Power Drivers","description":"","products":[{"product_id":"half-bridge-driver-with-inbuilt-oscillator","title":"Half-Bridge Driver with Inbuilt Oscillator","description":"\u003cp\u003eThis project is a Half Bridge with Inbuilt Oscillator utilizing the NCP1392B MOSFET driver and IRF540 MOSFETs for half-bridge topology applications. It allows for adjustable operating frequency from 25 kHz to 100 kHz with a trimmer potentiometer. The project includes brown-out protection, a PFC delay timer, and fixed dead time to improve performance. Designed for low-voltage applications up to 36V and 3A load current with forced air cooling, it can be modified for high-voltage use up to 400V by changing components like capacitors and MOSFETs. The operating frequency can be tuned up to 480 kHz depending on component values, with recommendations to consult the datasheet for optimal performance in higher frequency applications.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePower Supply Gate Driver 12V-15V DC\u003c\/li\u003e\n\u003cli\u003eLoad Power Supply 24V to 36V DC\u003c\/li\u003e\n\u003cli\u003eLoad Current Continues Up to 3A(Max 5A)\u003c\/li\u003e\n\u003cli\u003eWide Operating Frequency Range − from 25 kHz to 100 kHz\u003c\/li\u003e\n\u003cli\u003eHeader Connector for Gate Driver Power\u003c\/li\u003e\n\u003cli\u003eOn Board Power LED\u003c\/li\u003e\n\u003cli\u003eScrew Terminal for Load Power and Output\u003c\/li\u003e\n\u003cli\u003eOn Board Multi-Turn Pot to Adjust The frequency\u003c\/li\u003e\n\u003cli\u003e4 x 4MM PCB Mounting Holes\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 56.36 x 36.67 mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":46319511044268,"sku":"G002","price":6.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/halfbridge_1.jpg?v=1780055061"},{"product_id":"high-current-half-bridge-with-over-current-shutdown-1","title":"High Current Half Bridge with Over-Current Shutdown","description":"\u003cp\u003eThis high-current half-bridge driver board is designed as a flexible, open-design platform that can be configured to meet a wide range of voltage, current, and switching-frequency requirements. The board includes an adjustable overcurrent protection circuit, allowing users to set the desired current limit by selecting an appropriate shunt resistor value and adjusting the onboard threshold trimmer.\u003c\/p\u003e\n\u003cp\u003eAn onboard current-sense shunt resistor is provided for over-current detection. Users can select the shunt resistor value according to the required current threshold. Gate resistors and optional gate-drive diodes can also be customized to optimize switching performance for specific PWM frequencies and load characteristics\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLoad supply voltage up to 90 VDC (limited by installed DC bus capacitor ratings)\u003c\/li\u003e\n\u003cli\u003eGate driver supply voltage: 15 V nominal (10 V to 20 V operating range)\u003c\/li\u003e\n\u003cli\u003eHigh dV\/dt immunity: ±50 V\/ns over the full temperature range\u003c\/li\u003e\n\u003cli\u003e4 A source\/sink gate drive capability\u003c\/li\u003e\n\u003cli\u003eFast switching performance: 15 ns rise\/fall time with 1 nF load\u003c\/li\u003e\n\u003cli\u003eCompatible with 3 V and 5 V TTL\/CMOS logic inputs with hysteresis\u003c\/li\u003e\n\u003cli\u003eIntegrated bootstrap diode\u003c\/li\u003e\n\u003cli\u003eSmart shutdown function\u003c\/li\u003e\n\u003cli\u003eAdjustable dead time via R9\u003c\/li\u003e\n\u003cli\u003eAdjustable overcurrent protection\u003c\/li\u003e\n\u003cli\u003eInterlock function to prevent shoot-through\u003c\/li\u003e\n\u003cli\u003eComprehensive fault protection\u003c\/li\u003e\n\u003cli\u003eOn Board LED for Logic Power\u003c\/li\u003e\n\u003cli\u003eOpen-design architecture for easy customization and experimentation\u003c\/li\u003e\n\u003cli\u003e4 x 4 mmPCB Mounting Holes\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 57.15 x 46.51 mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":46896031137964,"sku":"G101","price":39.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/G101.jpg?v=1786092757"},{"product_id":"high-voltage-isolated-half-bridge-driver-up-to-1kv","title":"High-Voltage Isolated Half-Bridge Driver (Up to 1kV)","description":"\u003cp\u003eThis fully isolated\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ehalf-bridge driver\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis designed for high-voltage applications up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1kV\u003c\/strong\u003e. It features 2 x 2W isolated DC-DC converters to independently power the low-side and high-side switching elements. The board is assembled with 1.2KV IGBTs, Two power LEDs provide visual indication of power presence for both the low-side and high-side gate drivers. The signal ground is galvanically isolated from the power ground, allowing it to be connected to any potential up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e2.5kV\u003c\/strong\u003e. Barrier connectors are provided for the load and its power supply. A screw terminal connector facilitates the 12V DC input for the gate driver circuitry. A\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eLM78M05\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eregulator provides a 5V supply to the logic side of the gate driver input circuit. A header connector allows for PWM input via channels A and B, as well as enable\/disable control.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe driver incorporates the following key components:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUCC21520 Isolated Half-Bridge Driver Chip\u003c\/li\u003e\n\u003cli\u003eTwo Isolated DC-DC Converters (one for each side), R12P21509D\u003c\/li\u003e\n\u003cli\u003eZXGD30006 High-Current Gate Driver Chip\u003c\/li\u003e\n\u003cli\u003eTwo 1.2KV\/40Amp, FGH40T120SMD-ND\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eImportant Considerations:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSelect appropriate IGBTs based on your specific power and frequency requirements.\u003c\/li\u003e\n\u003cli\u003eThis board is suitable for DC bus voltages up to 800V Max 1KV.\u003c\/li\u003e\n\u003cli\u003eTesting was performed using a 6.5kHz TTL signal and a 105V DC power supply.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePower Supply Gate Driver 12V DC\u003c\/li\u003e\n\u003cli\u003ePower Supply Load 800V DC (Max 1KV)\u003c\/li\u003e\n\u003cli\u003eGate Drive DC-DC Converter Voltage Output +15V \/ -9V\u003c\/li\u003e\n\u003cli\u003eOn Board 5V Regulator to power the Gate Driver Input side circuit\u003c\/li\u003e\n\u003cli\u003eCommon-Mode Transient Immunity (CMTI) greater than 125V\/ns\u003c\/li\u003e\n\u003cli\u003eHigh Gate-drive Currents (up to 10A source and sink)\u003c\/li\u003e\n\u003cli\u003eSurge immunity up to 10kV\u003c\/li\u003e\n\u003cli\u003eProgrammable overlap and dead time\u003c\/li\u003e\n\u003cli\u003eFast disable for power sequencing\u003c\/li\u003e\n\u003cli\u003e8000VPK reinforced Isolation per DIN EN IEC 60747-17 (VDE 0884-17)\u003c\/li\u003e\n\u003cli\u003e7kVRMS isolation for 1 minute per UL 1577 (UCC21520)\u003c\/li\u003e\n\u003cli\u003e4 x 4MM PCB Mounting Holes\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 79.69 x 70.17 mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":46896105914540,"sku":"G102","price":129.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/G102.jpg?v=1786092944"},{"product_id":"isolated-igbt-half-bridge-gate-driver-module","title":"Isolated IGBT Half-Bridge Gate Driver Module","description":"\u003cp\u003eThis is a fully isolated half-bridge gate driver module that can be configured according to the user’s voltage and current requirements. The design consists of two galvanically isolated single-channel gate driver\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1ED3124MC12H\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eICs and a dedicated 2X isolated DC-DC power supply that provides a bipolar output of +15 V \/ –9 V, 2X IKW15N120BH6 IGBT, and LMV331 comparator and shunt resistor for over current detection.\u003c\/p\u003e\n\u003cp\u003eThe board is configured by default for IGBT applications; however, it can also be configured to drive MOSFETs and SiC MOSFETs. Users can select the appropriate power device (IGBT, MOSFET, or SiC MOSFET) based on the required voltage level, power rating, and switching frequency. Suitable Pin to pin compatible RECOM DC-DC converter for MOSFETS, SiC MOSFET.\u003c\/p\u003e\n\u003cp\u003eThe gate driver IC can also be chosen according to the gate charge and capacitance of the selected device to ensure optimal switching performance. A list of compatible driver ICs and power device part numbers is provided below for reference.\u003c\/p\u003e\n\u003ch3\u003eCompatible Gate Driver IC Options\u003c\/h3\u003e\n\u003cp\u003eThe board can also accommodate lower-current compatible devices:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1ED3120MC12H – 5.5 A source\/sink, 8.0 V UVLO\u003c\/li\u003e\n\u003cli\u003e1ED3121MC12H – 5.5 A source\/sink, 10.5 V UVLO\u003c\/li\u003e\n\u003cli\u003e1ED3123MC12H – 14 A source\/sink, 8.0 V UVLO\u003c\/li\u003e\n\u003cli\u003e1ED3124MC12H – 14 A source\/sink, 10.5 V UVLO\u003c\/li\u003e\n\u003cli\u003e1ED3131MC12H – 5.5 A source\/sink, 180 ns minimum input pulse suppression\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLoad Supply Up to 900V DC\u003c\/li\u003e\n\u003cli\u003eGate Driver Power 12V DC\u003c\/li\u003e\n\u003cli\u003eOn Board 5V Regulator to drive Gate Driver Input Side Circuitry\u003c\/li\u003e\n\u003cli\u003eD1 and D2 Power LED DC-DC Output\u003c\/li\u003e\n\u003cli\u003eOver Current Detection\/Alarm Circuit (Isolated Output)\u003c\/li\u003e\n\u003cli\u003eScrew Terminals for Load and Load Power\u003c\/li\u003e\n\u003cli\u003eCMOS-compatible input thresholds (3 V to 15 V)\u003c\/li\u003e\n\u003cli\u003eCompatible with 3.3 V microcontrollers\u003c\/li\u003e\n\u003cli\u003eHeader Connector for Input Signal, Logic Power and Fault Output\u003c\/li\u003e\n\u003cli\u003e4 x 4 mm PCB Mounting Holes\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 71.12 x 57.15 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCore Components\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThe module is based on:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2× 1ED3124MC12H isolated gate driver ICs\u003c\/li\u003e\n\u003cli\u003e2X IKW15N120BH6 – 1200 V, 15 A high-speed IGBT with anti-parallel diode (TO-247)\u003c\/li\u003e\n\u003cli\u003eR12P21509D 2W isolated DC-DC converter\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":46896340304044,"sku":"G103","price":129.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/G103a.jpg?v=1786097196"},{"product_id":"the-isolated-half-bridge-an-igbt-gate-driver-module-with-current-sense-ncd57085dr2g","title":"The Isolated Half-Bridge: An IGBT Gate Driver Module with Current Sense, NCD57085DR2G","description":"\u003cp\u003eThe Isolated Half-Bridge with Current Sense is a compact power electronics module designed to drive two IGBTs in a half-bridge configuration. Each gate driver channel uses an NCD57085DR2G single-channel gate driver IC from onsemi, paired with an R12P21509D isolated DC-DC converter module that generates the +15 V \/ –9 V bias required for proper IGBT operation.\u003c\/p\u003e\n\u003cp\u003eA shunt resistor in the IGBT emitter path provides current sensing for overload detection and current monitoring. Power LEDs on each channel indicate the presence of the gate driver supply voltage. Figure 1 shows the fully assembled module.\u003c\/p\u003e\n\u003cp\u003eHigh-current screw terminals accommodate the load connection and DC bus input. A seven-pin header connector provides access to the high-side and low-side PWM inputs, fault output, and gate driver power. The PCB supports TO-247 package IGBTs, allowing users to select devices appropriate to their application.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eSpecs and Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSupply: 12–20 VDC\u003c\/li\u003e\n\u003cli\u003eDC-DC Converter (R12P21509D) Output: +15 V \/ –9 V\u003c\/li\u003e\n\u003cli\u003eGate Driver (NCD57085DR2G) Peak Output Current: +7 A \/ –7 A\u003c\/li\u003e\n\u003cli\u003eIGBT (AFGHL40T65RQDN): 40 A, 650 V\u003c\/li\u003e\n\u003cli\u003eMaximum Load Voltage: 500 V DC\u003c\/li\u003e\n\u003cli\u003eCurrent Sense Threshold: 250 mV (adjustable via shunt resistor value)\u003c\/li\u003e\n\u003cli\u003eOvercurrent fault output (active low; normally high)\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions: 68.90 × 52.07 mm\u003c\/li\u003e\n\u003cli\u003eMounting Holes: 4 × 4 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":46896475570348,"sku":"G104","price":110.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/M104.jpg?v=1786100015"},{"product_id":"high-voltage-sic-mosfet-switch-with-isolated-gate-driver-and-isolated-dc-dc-converter-1ed3124mc12h","title":"High Voltage SiC-MOSFET Switch with Isolated Gate Driver and Isolated DC-DC Converter, 1ED3124MC12H","description":"\u003cp\u003eThe isolated high-voltage SiC MOSFET switch offers a straightforward solution for power drivers, comprising a gate driver chip (1ED3124MC12H), a 1.2kV\/4.7A SiC MOSFET, and an isolated 2W DC-DC converter (R12P22005D). The gate driver chip is optimized for high-frequency operations and can deliver high gate driver currents of up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e14A.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis module is well-suited for various applications, including half-bridge, full-bridge, and single SiC MOSFET switch configurations.\u003c\/p\u003e\n\u003cp\u003eFor convenient access, the Source and Drain of the SiC MOSFET are connected to high-current\/voltage screw terminals. Additionally, an optional high-voltage C12 capacitor can be installed as per the specific application requirements, providing flexibility and adaptability to different use cases. Overall, this isolated high-voltage SiC MOSFET switch module provides a reliable and efficient solution for power driver applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLogic input:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto output switching behavior There are two possible input modes to control the SiC MOSFET. At non-inverting mode IN+ controls the driver output while IN- is set to low. At inverting mode IN- controls the driver output while IN+ is set to high. A minimum input pulse width is defined to filter occasional glitches.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDriver outputs:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe output driver section uses MOSFETs to provide a rail-to-rail output. This feature permits that tight control of gate voltage during on-state and short circuit can be maintained as long as the driver’s supply is stable. Due to the low internal voltage drop, switching behavior of the SiC MOSFET is predominantly governed by the gate resistor. Furthermore, it reduces the power to be dissipated by the driver.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInput Supply 12V DC\u003c\/li\u003e\n\u003cli\u003eDC-DC Converter Output +20V DC\/ -5V DC\u003c\/li\u003e\n\u003cli\u003eHeader Connector for Input Power and Signal Input\u003c\/li\u003e\n\u003cli\u003eOn Board High Voltage TO263-7 SIC MOSFET (IMBG120R350M1H 1200V\/4.7A \/350mΩ\/175°C)\u003c\/li\u003e\n\u003cli\u003eUp to 14.0 A typical peak output current (Gate Driver)\u003c\/li\u003e\n\u003cli\u003eDC-DC Converter Isolation 6.4VKVDC\u003c\/li\u003e\n\u003cli\u003eGate Driver Chip Isolation 5.7 kV (rms)\u003c\/li\u003e\n\u003cli\u003e3 V and 5 V input supply voltage\u003c\/li\u003e\n\u003cli\u003eHigh common-mode transient immunity CMTI \u0026gt; 200 kV\/µs\u003c\/li\u003e\n\u003cli\u003eScrew Terminal Provided for SiC MOSFET Drain Source Connections\u003c\/li\u003e\n\u003cli\u003eOn Board Power LED (Output DC-DC Converter)\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 64.93 x 27.31 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":46899963166892,"sku":"G105","price":42.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/G105A.jpg?v=1786181728"},{"product_id":"high-current-half-bridge-for-automotive-applications-2ed2184s06f","title":"High-Current Half-Bridge for Automotive Applications, 2ED2184S06F","description":"\u003cp\u003eThis low-voltage, high-current half-bridge driver is designed for solar systems, motor control, DC-DC converters, chargers and many other power applications.\u003c\/p\u003e\n\u003cp\u003eThe board is built around the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e2ED2184S06F\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003egate driver IC and uses two\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eFDB047N10 MOSFETs,\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ealong with an optional current-sense circuit.\u003c\/p\u003e\n\u003cp\u003eScrew terminals are provided for load power and load connections, while header connectors are available for gate driver power, control inputs, and optional current-sense output.\u003c\/p\u003e\n\u003cp\u003eAn onboard optional regulator provides\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e5V DC\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor the current-sense circuit.\u003c\/p\u003e\n\u003cp\u003eThis compact board can drive continuous current up to\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003e10A\u003c\/strong\u003e. However, proper cooling is strongly recommended when operating at high load currents. The board has been tested up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e5A load\u003c\/strong\u003e, at\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e20kHz\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eswitching frequency, with a duty cycle range of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e5% to 95%\u003c\/strong\u003e, using a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e48V DC supply\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe gate driver requires a 12–15V DC supply. An onboard LED indicates the presence of logic power.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLoad power supply: 12V to 48V DC\u003c\/li\u003e\n\u003cli\u003eGate Driver Logic Power Supply 12V to 15V DC\u003c\/li\u003e\n\u003cli\u003eLoad current: Up to 5A (Tested)\u003c\/li\u003e\n\u003cli\u003eOnboard logic power LED indicator\u003c\/li\u003e\n\u003cli\u003eFrequency Tasted Up to 40Khz\u003c\/li\u003e\n\u003cli\u003eDuty cycle range: 5% to 95%\u003c\/li\u003e\n\u003cli\u003eScrew terminals for load and power connections\u003c\/li\u003e\n\u003cli\u003eHeader connectors for logic power and signal I\/O\u003c\/li\u003e\n\u003cli\u003eOptional onboard current-sense circuit\u003c\/li\u003e\n\u003cli\u003ePCB dimensions: 49.05 × 36.04 mm\u003c\/li\u003e\n\u003cli\u003e4 x 4 mm PCB mounting holes\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":46900092240044,"sku":"G107","price":39.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/G107a.jpg?v=1786184543"},{"product_id":"dimmable-linear-led-controller-bcr602","title":"Dimmable Linear LED Controller, BCR602","description":"\u003cp\u003eThis\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e48V\u003c\/strong\u003e,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e200mA\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edimmable linear LED driver is a highly reliable solution for various LED applications. The project features the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBCR602\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003echip, which supports LED engines, LED modules, and LED strips. The driver utilizes a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eMOSFET\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(Q1) and the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBCR602\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003echip to provide constant current control, and it can also be equipped with a Bipolar Junction Transistor (BJT).\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBCR602\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003echip regulates the LED current using the power Q1 transistor, allowing for precise control over the current level. The LED current is fully scalable by adjusting the external Current Sense (CS) resistor (R6), providing flexibility in design. Additionally, the BCR602 chip suppresses voltage ripple from the power supply, ensuring a constant LED current that results in better light quality.\u003c\/p\u003e\n\u003cp\u003eThe LED current can be dimmed using a resistor (\u003cstrong\u003eR\u003csub\u003eset\u003c\/sub\u003e\u003cspan\u003e \u003c\/span\u003eR7\u003c\/strong\u003e) or by applying an analog PWM signal to the Multi-Function Input Output (MFIO) pin. The embedded hot plug protection feature enables safe plug-in and plug-out of any LED load during operation, without compromising the driver’s performance.\u003c\/p\u003e\n\u003cp\u003eThe LED current level is configured to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e200mA\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand has been thoroughly tested. The shunt resistors define the maximum LED current, which can be adjusted down to an effective resistor\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eR6.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe voltage drop at the V\u003csub\u003eSENSE\u003c\/sub\u003e\u003cspan\u003e \u003c\/span\u003epin, caused by the shunt resistors, is\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e400mV\u003c\/strong\u003e, or less in case of dimming, resulting in improved overall system efficiency and providing extra voltage headroom to compensate for tolerances in LED forward voltage or supply voltage.\u003c\/p\u003e\n\u003cp\u003eFurthermore, the driver features a smart Over-Temperature Protection (OTP) function, which reduces the LED current when the junction temperature of the BCR602 chip exceeds a certain threshold, ensuring safe and reliable operation.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSupply 8V to 48V (Supports Up to 60V -\u0026gt; Read Note)\u003c\/li\u003e\n\u003cli\u003eLoad Current 200mA (Supports Higher Current -\u0026gt; Read Note)\u003c\/li\u003e\n\u003cli\u003eProject can drive 20 Series LEDs (With 60V Power Supply)\u003c\/li\u003e\n\u003cli\u003eLED current precision ±3%\u003c\/li\u003e\n\u003cli\u003eBCR602 Supports MOSFET and BJT (DPAK or SOT-223\u003c\/li\u003e\n\u003cli\u003e100 Hz\/120 Hz supply ripple suppression\u003c\/li\u003e\n\u003cli\u003e3 percent analog dimming or 1 percent PWM dimming of LED current at the MFIO pin\u003c\/li\u003e\n\u003cli\u003eBoard suitable for assembly with transistor packages of types SOT-223, DPAK\u003c\/li\u003e\n\u003cli\u003eRset functionality at the MFIO pin (R7)\u003c\/li\u003e\n\u003cli\u003eHot-plug protection to minimize LED inrush current\u003c\/li\u003e\n\u003cli\u003eOTP function vs junction temperature\u003c\/li\u003e\n\u003cli\u003eScrew Terminals for LED and Power Input\u003c\/li\u003e\n\u003cli\u003eHeader Connector for Dimmer Voltage Input 0 to 3.3V or PWM Input\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 31.75 x 20.96 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":46900159185068,"sku":"G108","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/G108a.jpg?v=1786185849"},{"product_id":"half-bridge-driver-module-48v-5a-load-lf2184","title":"Half-Bridge Driver Module – 48V\/5A Load, LF2184","description":"\u003cp\u003e\u003cspan\u003eThis \u003c\/span\u003e\u003cstrong\u003eHalf-Bridge Driver Module\u003c\/strong\u003e\u003cspan\u003e is a low-voltage power management solution designed to drive a wide range of applications, including DC motors, DC-DC converters, and other inductive and resistive loads. The module is engineered to operate within a load supply voltage range of up to \u003c\/span\u003e\u003cstrong\u003e48V DC\u003c\/strong\u003e\u003cspan\u003e and can handle a maximum load current of \u003c\/span\u003e\u003cstrong\u003e5A\u003c\/strong\u003e\u003cspan\u003e, making it an ideal choice for various low-voltage power management applications. The design utilizes low-cost N-channel MOSFETs, specifically the \u003c\/span\u003e\u003cstrong\u003eIRFZ44\u003c\/strong\u003e\u003cspan\u003e, which provide a reliable and efficient switching performance. Barrier terminal blocks are employed for the load power input, while a header connector is used for the gate driver supply and input signal. The driver operates with a single \u003c\/span\u003e\u003cstrong\u003ePWM\u003c\/strong\u003e\u003cspan\u003e (Pulse Width Modulation) signal, and the SD (Shutdown) pin is enabled by default with an internal pull-up resistor. To disable the output, simply connect the SD pin to the ground. The board supports the use of either TO220 or TO247 MOSFETs, with two IRFZ44PBF MOSFETs (60V, 50A, 0.028 ohm) used in this particular design. This flexibility allows for easy adaptation to different application requirements.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLoad supply: up to 48V DC (VL)\u003c\/li\u003e\n\u003cli\u003eLoad current: up to 5A\u003c\/li\u003e\n\u003cli\u003eGate Driver Power 12-15V (VCC)\u003c\/li\u003e\n\u003cli\u003eLow-cost N-channel MOSFETs (IRFZ44)\u003c\/li\u003e\n\u003cli\u003eBarrier Terminal blocks for load power input\u003c\/li\u003e\n\u003cli\u003eHeader connector for gate driver supply and input signal\u003c\/li\u003e\n\u003cli\u003eSingle PWM signal operation\u003c\/li\u003e\n\u003cli\u003eSD pin with internal pull-up resistor for default enable\u003c\/li\u003e\n\u003cli\u003eOn Board Power LED\u003c\/li\u003e\n\u003cli\u003eUVLO off Positive Going Threshold 9V\u003c\/li\u003e\n\u003cli\u003eSupports TO220 or TO247 MOSFETs\u003c\/li\u003e\n\u003cli\u003e4 x 4 mm PCB Mounting Holes\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 79.85 x 40.0 1mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eThis module is suitable for use in a variety of applications, including:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMotor control systems\u003c\/li\u003e\n\u003cli\u003ePower management systems\u003c\/li\u003e\n\u003cli\u003eDC-DC converters\u003c\/li\u003e\n\u003cli\u003eLow-voltage power supplies\u003c\/li\u003e\n\u003cli\u003eIndustrial automation systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":46900212564140,"sku":"G109","price":42.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/g109b.jpg?v=1786186282"},{"product_id":"fault-protected-high-side-switch-lt1910","title":"Fault Protected High Side Switch, LT1910","description":"\u003cp\u003eThis product is designed to protect the load from over-current conditions using the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eLT1910\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efault-protected high-side switch controller. When the internal drain comparator detects that the switch current exceeds the preset threshold, the LT1910 immediately turns off the switch and asserts a fault flag.\u003c\/p\u003e\n\u003cp\u003eThe switch remains off for approximately\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e150 ms\u003c\/strong\u003e, as determined by the external timing capacitor\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eC3\u003c\/strong\u003e, and then automatically attempts to restart. If the fault condition persists, the protection cycle repeats until the fault is cleared, thereby safeguarding the MOSFET and the load. Once the switch restarts successfully, the fault flag is reset.\u003c\/p\u003e\n\u003cp\u003eThe LT1910 features a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e50-mV trip point\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor current sensing, which determines the value of the shunt resistor. The board includes two selectable shunt resistor options —\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e0.01 Ω\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e0.1 Ω\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— which can be configured using jumpers\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eJ1\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eJ2\u003c\/strong\u003e. A third option allows both shunt resistors to be used in parallel (by closing both jumpers J1 and J2), providing additional flexibility in setting the desired trip point.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e12V to 24V Power Supply Range\u003c\/li\u003e\n\u003cli\u003eProtected from –15V to 60V Supply Transients\u003c\/li\u003e\n\u003cli\u003eShort-Circuit Protected\u003c\/li\u003e\n\u003cli\u003eVCC 5V for Fault Pull-Up\u003c\/li\u003e\n\u003cli\u003eAutomatic Restart Timer Approx 150mS\u003c\/li\u003e\n\u003cli\u003eOpen-Collector Fault Flag with Pull Up, Normally High\u003c\/li\u003e\n\u003cli\u003eFully Enhances N-Channel MOSFET Switches\u003c\/li\u003e\n\u003cli\u003eProgrammable Current Limit, Delay Time and Auto Restart Period\u003c\/li\u003e\n\u003cli\u003eVoltage Limited Gate Drive\u003c\/li\u003e\n\u003cli\u003eDefaults to Off State with Open Input\u003c\/li\u003e\n\u003cli\u003eTurn On Time 75uS\u003c\/li\u003e\n\u003cli\u003eTurn Off Time 10uS\u003c\/li\u003e\n\u003cli\u003eMaximum Output Current Shunt Resistor 0.1 Ohm, Current 0.6A\u003c\/li\u003e\n\u003cli\u003eMaximum Output Current Shunt Resistor 0.01 Ohm, 6A\u003c\/li\u003e\n\u003cli\u003e4 x 4 mm Mounting Holes\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 42.55 x 35.56 mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":46900300513452,"sku":"G110","price":32.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/G110.jpg?v=1786187422"},{"product_id":"high-voltage-igbt-module-low-side-driver-with-over-current-protection-and-fault-enable","title":"High Voltage IGBT Module, Low-side Driver with Over-Current Protection and Fault\/Enable","description":"\u003cp\u003e\u003cspan\u003eThis\u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003eIGBT driver module\u003c\/strong\u003e\u003cspan\u003e is a low-side gate driver that features integrated over-current protection. The primary functions of this module are its built-in over-current protection and enable\/fault output capabilities. The board’s main components include the gate driver chip \u003c\/span\u003e\u003cstrong\u003e(1ED44176N01F),\u003c\/strong\u003e\u003cspan\u003e an SMD \u003c\/span\u003e\u003cstrong\u003eD2PK IGBT,\u003c\/strong\u003e\u003cspan\u003e and a current sense resistor. The chip is equipped with an over-current protection function, which has a typical threshold of \u003c\/span\u003e\u003cstrong\u003e0.5V at the OCP\u003c\/strong\u003e\u003cspan\u003e (Over-Current Protection) point. When an over-current condition occurs, the driver output is automatically switched off. Simultaneously, the \u003c\/span\u003e\u003cstrong\u003eEN\/FLT (Enable\/Fault)\u003c\/strong\u003e\u003cspan\u003e pin is internally pulled down, and an internal current source charges the capacitor (C4) connected between the FLTC and VSS pins to program the fault clear time. This module is capable of driving loads up to \u003c\/span\u003e\u003cstrong\u003e1A\u003c\/strong\u003e\u003cspan\u003e and can drive higher current with forced air cooling. It can operate within a load power supply range of \u003c\/span\u003e\u003cstrong\u003e80-400V DC\u003c\/strong\u003e\u003cspan\u003e, making it a reliable and efficient solution for various applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePower Supply for the Load 80V to 400V DC\u003c\/li\u003e\n\u003cli\u003ePower Supply for Logic Circuit 15V (Range 12V-16V)\u003c\/li\u003e\n\u003cli\u003eLoad Current Up To 1A, Higher Current with Cooling Fan\u003c\/li\u003e\n\u003cli\u003ePower Supply VD(VDD) 3.3V To 5V\u003c\/li\u003e\n\u003cli\u003eOn Board Power LED\u003c\/li\u003e\n\u003cli\u003eHeader Connector for Gate Driver Power and Input\/Output Signal\u003c\/li\u003e\n\u003cli\u003eScrew Terminals for Load Power and Load\u003c\/li\u003e\n\u003cli\u003eOver-current detection with positive voltage input (OC shutdown)\u003c\/li\u003e\n\u003cli\u003e5 V over-current threshold with accurate ±5% tolerance\u003c\/li\u003e\n\u003cli\u003eSingle pin for fault output and enable, Normally High\u003c\/li\u003e\n\u003cli\u003eUnder voltage lockout\u003c\/li\u003e\n\u003cli\u003eCMOS Schmitt-triggered Inputs\u003c\/li\u003e\n\u003cli\u003e3 V, 5 V and 15 V Input Logic Compatible\u003c\/li\u003e\n\u003cli\u003eOutput in Phase with Input\u003c\/li\u003e\n\u003cli\u003eVCC Supply Undervoltage Positive Going Threshold 11.9V\u003c\/li\u003e\n\u003cli\u003eOCP to Low Level EN\/FLT Signal Delay 440nS\u003c\/li\u003e\n\u003cli\u003eFault Clear Time 110uS (C4=1nF)\u003c\/li\u003e\n\u003cli\u003eThe switch turns off during protection\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 44.61 x 33.97mm\u003c\/li\u003e\n\u003cli\u003e4 x 4MM PCB Mounting Holes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePotential applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDigitally controlled PFC\u003c\/li\u003e\n\u003cli\u003eHeater Controller\u003c\/li\u003e\n\u003cli\u003eHigh Voltage Boost DC-DC Converter\u003c\/li\u003e\n\u003cli\u003eAir conditioner\u003c\/li\u003e\n\u003cli\u003eHome appliances\u003c\/li\u003e\n\u003cli\u003eIndustrial applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":46900332200108,"sku":"G111","price":24.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/G111A.jpg?v=1786188806"},{"product_id":"half-bridge-with-single-pwm-input","title":"Half Bridge with Single PWM Input","description":"\u003cp\u003eThis is a Half-bridge module based on the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eLM5104\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003echip, which is a high-voltage gate driver. This High-Voltage Gate Driver is designed to drive both the high-side and the low-side N-channel MOSFETs in a synchronous buck configuration. The floating high-side driver can work with supply voltages up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100V\u003c\/strong\u003e. The high-side and low-side gate drivers are controlled from a single PWM input. Each state change is controlled adaptively to prevent shoot-through issues. In addition to the adaptive transition timing, an additional delay time can be added, proportional to an external setting resistor. An integrated high-voltage diode is provided to charge the high-side gate drive\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ebootstrap capacitor\u003c\/strong\u003e. A robust level shifter operates at high speed while consuming low power and providing clean level transitions from the control logic to the high-side gate driver. Undervoltage lockout is provided on both the low-side and the high-side power rails.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe user must take care of the following:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBootstrap capacitor value depends on the input frequency\u003c\/li\u003e\n\u003cli\u003eChoose the right MOSFET as per Load Current\/Voltage\u003c\/li\u003e\n\u003cli\u003eChoose the Right Value for delay resistor R4-RT, Depending on MOSFET Gate Capacitance. Refer to Datasheet for more info.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePower Supply Load up to 48V (Limited Due to Capacitor Volt)\u003c\/li\u003e\n\u003cli\u003ePower Supply Gate Driver 9V to 14V DC\u003c\/li\u003e\n\u003cli\u003eLoad Up to 5Amps (Higher with Cooling Fan)\u003c\/li\u003e\n\u003cli\u003eDrives Both a High-Side and Low-Side N-Channel MOSFET\u003c\/li\u003e\n\u003cli\u003eAdaptive Rising and Falling Edges with Programmable\u003c\/li\u003e\n\u003cli\u003eAdditional Delay\u003c\/li\u003e\n\u003cli\u003eUnder Voltage Threshold 7V\u003c\/li\u003e\n\u003cli\u003eAdjustable Delay 90 to 200nS (RT(R4) 10K to 100K)\u003c\/li\u003e\n\u003cli\u003eOperating Frequency Input up to 1000Khz\u003c\/li\u003e\n\u003cli\u003eSingle Input Control\u003c\/li\u003e\n\u003cli\u003eBootstrap Supply Voltage Range up to 118-V DC\u003c\/li\u003e\n\u003cli\u003eFast Turnoff Propagation Delay (25 ns Typical)\u003c\/li\u003e\n\u003cli\u003eDrives 1000-pF Loads With 15-ns Rise and Fall Times\u003c\/li\u003e\n\u003cli\u003eSupply Rail Under Voltage Lockout\u003c\/li\u003e\n\u003cli\u003eOn Board Power LED\u003c\/li\u003e\n\u003cli\u003eScrew Terminals for Load Supply and Load\u003c\/li\u003e\n\u003cli\u003eHeader Connector for Input signal and Gate Driver Supply\u003c\/li\u003e\n\u003cli\u003e5mm x 4 PCB Mounting Holes\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 44.45 x 29.53 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCurrent Fed Push-Pull Power Converters\u003c\/li\u003e\n\u003cli\u003eHigh Voltage Buck Regulators\u003c\/li\u003e\n\u003cli\u003eActive Clamp Forward Power Converters\u003c\/li\u003e\n\u003cli\u003eHalf-Bridge and Full-Bridge Converters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eConnections\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCN1: Pin 1 Power Supply Load 48V DC, Pin 2 = GND\u003c\/li\u003e\n\u003cli\u003eCN2: Pin 1 Output, Pin 2 = GND\u003c\/li\u003e\n\u003cli\u003eCN3: Pin 1 VDD 9V to 14V, Pin 2 = Load Power Supply, Pin 3 = PWM Input, Pin 4 = GND\u003c\/li\u003e\n\u003cli\u003eD1: Power LED\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":46900363559084,"sku":"G112","price":29.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/G112a.jpg?v=1786190170"},{"product_id":"half-bridge-with-ultra-precise-current-sense-feedback-for-solenoid","title":"Half-Bridge with Ultra-Precise Current Sense Feedback for Solenoid","description":"\u003cp\u003eA Half-bridge converter is widely used in applications such as DC-DC converters, switch mode power supplies, inverters, motor drivers, resistive loads, and solenoid drivers. This project consists of an\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eIR2104\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eHalf-bridge driver chip, 2 x DPAK MOSFETS, and an\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003eINA293\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprecision current sense amplifier. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eIR2104\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a half-bridge, high voltage, high-speed power MOSFET and IGBT driver with dependent high and low side referenced output channels. It drives high and low-side\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eN-channel\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMOSFETs, INA293 chip measures the load current across the shunt resistor connected to the output.\u003c\/p\u003e\n\u003cp\u003eThe project is mainly developed for solenoid applications that need current feedback. The circuit can handle load currents up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e2A\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand can handle higher currents with the help of forced air.\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eIRFR120\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMOSFETs are used, but you can use\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eFDD8876\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMOSFETs for higher currents. Shunt Resistor\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e0.01-ohm\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eused to sense the load current, INA293 has Gain 20V\/V.\u003c\/p\u003e\n\u003ch3\u003eInputs and Output\u003c\/h3\u003e\n\u003cp\u003eThe circuit requires 2 x signals,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eHI\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e(PWM) and\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSD\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(Shutdown). SD\/LI= High Output enables, LOW= Disable, both inputs are 3.3V, 5V and 15V logic compatible.\u003c\/p\u003e\n\u003cp\u003eCurrent Sense Output: 0.2V\/A, 2A = 0.4V (400mV)\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSupply Load 24V DC (VDD)\u003c\/li\u003e\n\u003cli\u003eSupply Gate Driver 12V-15V (VCC)\u003c\/li\u003e\n\u003cli\u003eSupply Current Sensor Amplifier INA293 (VI) 5V DC\u003c\/li\u003e\n\u003cli\u003eCurrent Feedback Output 0.2V\/A\u003c\/li\u003e\n\u003cli\u003eInput Signal Logic Level 3.3V, 5V and 15V.\u003c\/li\u003e\n\u003cli\u003eOperating Frequency Up to 20Khz\u003c\/li\u003e\n\u003cli\u003eTwo Control Signals PWM and Shutdown\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 34.93 x 29.37 mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":46900377714860,"sku":"G113","price":24.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/G113.jpg?v=1786190883"},{"product_id":"half-bridge-driver-with-inbuilt-oscillator-1","title":"Half-Bridge Driver with Inbuilt Oscillator","description":"\u003cp\u003eThis is a Half Bridge with Inbuilt Oscillator project that uses the NCP1392B, a self-oscillating high-voltage MOSFET driver, and two IRF540 MOSFETs. This project is specifically designed for applications that employ half-bridge topology.\u003c\/p\u003e\n\u003cp\u003eThe operating frequency of the driver can be adjusted from\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e25 kHz to 100 kHz\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eusing a trimmer potentiometer (PR1). Additionally, the project features adjustable brown-out protection, ensuring that the bulk voltage operates within the correct range. An internal\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100 ms or 12.6 ms\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ePFC delay timer guarantees that the main downstream converter will be turned on only when the bulk voltage is fully stabilized. The device also provides a fixed dead time, which helps reduce shoot-through current.\u003c\/p\u003e\n\u003cp\u003eThis project is configured for low-voltage applications, supporting up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e36V\u003c\/strong\u003e, with a continuous load current of up to\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003e3A\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewhen forced air cooling is used. However, with some modifications, the project can be adapted to support high-voltage applications up to\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003e400V DC\u003c\/strong\u003e. These modifications include replacing the DC bus capacitor, MOSFETs, and selecting an appropriate boot capacitor based on the specific frequency and voltage requirements.\u003c\/p\u003e\n\u003cp\u003eThe operating frequency of the project can be adjusted within a range of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e25 kHz to 100 kHz\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eusing the trimmer potentiometer PR1. The chip itself supports frequencies up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e480 kHz\u003c\/strong\u003e, but the actual frequency depends on the values of PR1 and resistor R6. For frequency adjustment, it is recommended to refer to the chip’s datasheet. It is also important to choose the right MOSFET and boot capacitor for higher frequency applications to ensure optimal performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBO:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBrown−Out function detects low input voltage conditions. Enable Input, when brought above Vref_EN, stops the driver. Operation is then restored (without any delay) when BO pin voltage drops by EN_Hyste below Vref_EN. Brown−Out Detection: The BO input monitors bulk voltage level via resistor divider R2 and R6 and thus assures that the application is working only for wanted bulk voltage band. The BO input sinks current of 18.2 A until the VrefBO threshold is reached.\u003c\/p\u003e\n\u003ch3\u003eSingle Ended Push Pull Converter\u003c\/h3\u003e\n\u003cp\u003eThe components Capacitor C6, C8, Diode D3, and D4 are optional and can be utilized by the user to create a single-ended, push-pull converter. Specifically, the combination of transistor Q1, Q2, an external transformer, and capacitors C6 and C8 forms a single-ended, push-pull converter. This converter operates by applying an alternating voltage to the potential-isolating transformer, effectively utilizing both half-cycles of the oscillation for energy transmission.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePower Supply Gate Driver 12V-15V DC\u003c\/li\u003e\n\u003cli\u003eLoad Power Supply 24V to 36V DC\u003c\/li\u003e\n\u003cli\u003eLoad Current Continues Up to 3A(Max 5A)\u003c\/li\u003e\n\u003cli\u003eWide Operating Frequency Range − from 25 kHz to 100 kHz\u003c\/li\u003e\n\u003cli\u003eHeader Connector for Gate Driver Power\u003c\/li\u003e\n\u003cli\u003eOn Board Power LED\u003c\/li\u003e\n\u003cli\u003eScrew Terminal for Load Power and Output\u003c\/li\u003e\n\u003cli\u003eOn Board Multi-Turn Pot to Adjust The frequency\u003c\/li\u003e\n\u003cli\u003e4 x 4MM PCB Mounting Holes\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 56.36 x 36.67 mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":46909192732844,"sku":"G116","price":24.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/G116A.jpg?v=1786352531"},{"product_id":"dc-electronic-load-1a-max44251","title":"DC Electronic Load – 1A, MAX44251","description":"\u003cp\u003eThis is a very precise\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eElectronic Load\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eproject built using the ultra-Precision, Low-Noise OPAMP\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eMAX44251\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efrom Analog Devices. The project can sink current from a power source. It can be used as test gear for power supplies, chargers, solar panels, batteries, and DC-DC converters. The resistor R11 acts as a shunt, OPAMPs convert current into voltage, 2\u003csup\u003end\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003eop-amp, and Q1 MOSFET are used to control the load current. A Multi-turn potentiometer helps to adjust the load current in the range of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e0 to 1A.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe supply voltage is up to 60V DC. The board works with dual supply\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e+\/-15V DC\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eand draws a few milli amps.\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eLM317\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eregulator provides 12V DC top op-amp and\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eLM337\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprovides regulated -7V supply to op-amp. At full load, MOSFET Q1 produces lots of heat, and a fan and large heatsink on MOSFET will help cool it down. Users may use a current meter in series to load to display the current. Optional onboard Trimmer potentiometer provided in case external potentiometer is not required.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOperating Power Supply Dual 15V DC (+\/-15V DC)\u003c\/li\u003e\n\u003cli\u003eLoad Current 1Amp, Power Supply Up to 60V DC\u003c\/li\u003e\n\u003cli\u003eHighly Efficient and Ultra-Precision Current Control\u003c\/li\u003e\n\u003cli\u003eOn-Board Power LED\u003c\/li\u003e\n\u003cli\u003eBarrier Block Connector for Load connection\u003c\/li\u003e\n\u003cli\u003eExternal Or On-Board Trimmer Potentiometer Option for Current Control\u003c\/li\u003e\n\u003cli\u003ePCB dimensions: 66.52 x 33.66 mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":46909514973356,"sku":"G120","price":42.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/G120.jpg?v=1786361267"},{"product_id":"high-side-switch-with-input-overvoltage-and-overcurrent-protection","title":"High Side Switch with Input Overvoltage and Overcurrent Protection","description":"\u003cp\u003eThe project here is a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e48V\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprotected, high side switch designed to switch a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e5A\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoutput load from input voltages from\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e8V to 48V\u003c\/strong\u003e. The circuit helps the user to easily ON\/OFF the high current and voltage load with over-voltage lockout and over-current protection. The wide input range and low shutdown current (\u003cstrong\u003e1μA typical\u003c\/strong\u003e) make it suitable for automotive, industrial, medical instruments, and telecom applications. This board offers a low\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e50ns\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(typical) propagation delay, fast switching times (\u003cstrong\u003e\u0026lt;10ns\u003c\/strong\u003e), and 100% duty cycle operation. The project is based on\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eLTC7000\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewhich is a fast high voltage protected high side N-channel MOSFET driver. An internal charge pump fully enhances an external N-channel MOSFET switch, allowing it to remain on indefinitely. Its powerful gate driver can drive large gate capacitance MOSFETs with very short transition times, ideal for both high-frequency switching and static switch applications.\u003c\/p\u003e\n\u003cp\u003eThe circuit operates over an\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e8V to 48V\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003einput supply range. When an external current sense resistor and internal comparator sense that the switch current has exceeded a pre-set level, a fault flag is asserted and the switch is turned off after a period of time set by an external timing capacitor\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eC7.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAfter a cooldown period, it goes back on. The circuit is also configured to act when an overvoltage condition occurs. When voltage rise more than setpoint of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e48V\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eit switches off the output and remains off until input is cycled. Resistors\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eR7, R8\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eare provided to set the overvoltage lockout,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eR10\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esets the overcurrent limit, U2 5V is a regulator, Pin 3 (IMP) of CN3-CN4 provided to enable the output. This pin needs a High-level TTL-5V signal to enable the output, connect this pin to 5V to enable the output. When a fault condition occurs, disconnect the IMP pin from 5V and connect it to GND, pull up this pin to recycle the output.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSupply 8V to 48V DC\u003c\/li\u003e\n\u003cli\u003eLoad Current 5Amps\u003c\/li\u003e\n\u003cli\u003eOver Voltage threshold 48V\u003c\/li\u003e\n\u003cli\u003eEasy On\/OFF the high voltage and High Current Load\u003c\/li\u003e\n\u003cli\u003eOvervoltage Lockout\u003c\/li\u003e\n\u003cli\u003eOver Current Protection\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 61.28 x 43.66 mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":46916451991724,"sku":"G124","price":39.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/G124A.jpg?v=1786527801"},{"product_id":"9v-to-60v-pwm-2-3a-solenoid-valve-driver-using-drv101","title":"+9V to 60V PWM 2.3A Solenoid Valve Driver using DRV101","description":"\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eDRV101\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a low-side power switch employing a pulse-width modulated\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e(PWM)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoutput. Its rugged design is optimized for driving electromechanical devices such as valves, solenoids, relays, actuators, and positioners. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eDRV101\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emodule is also ideal for driving thermal devices such as heaters and lamps. PWM operation conserves power and reduces heat rise, resulting in higher reliability. In addition, an adjustable PWM potentiometer allows fine control of the power delivered to the load. Time from dc output to PWM output is externally adjustable. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eDRV101\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ecan be set to provide a strong initial closure, automatically switching to a soft hold mode for power savings. The duty cycle can be controlled by a potentiometer, analog voltage, or digital-to-analog converter for versatility. A flag output LED D2 indicates thermal shutdown and over\/under current limit. A wide supply range allows use with a variety of actuators.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHIGH OUTPUT DRIVE: 2.3A\u003c\/li\u003e\n\u003cli\u003eWIDE SUPPLY RANGE: +9V to +60V\u003c\/li\u003e\n\u003cli\u003eCOMPLETE FUNCTION\u003c\/li\u003e\n\u003cli\u003ePWM Output\u003c\/li\u003e\n\u003cli\u003eInternal 24 kHz Oscillator\u003c\/li\u003e\n\u003cli\u003eDigital Control Input\u003c\/li\u003e\n\u003cli\u003eAdjustable Delay (Capacitor C1)\u003c\/li\u003e\n\u003cli\u003eAdjustable Duty Cycle P1 Potentiometer\u003c\/li\u003e\n\u003cli\u003eOver\/Under Current Indicator\u003c\/li\u003e\n\u003cli\u003eFULLY PROTECTED\u003c\/li\u003e\n\u003cli\u003eThermal Shutdown with Indicator\u003c\/li\u003e\n\u003cli\u003eInternal Current Limit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eELECTROMECHANICAL DRIVERS:\u003c\/li\u003e\n\u003cli\u003eSolenoids Positioners\u003c\/li\u003e\n\u003cli\u003eActuators High Power Relays\/Contactors\u003c\/li\u003e\n\u003cli\u003eValves Clutch\/Brake\u003c\/li\u003e\n\u003cli\u003eFLUID AND GAS FLOW SYSTEMS\u003c\/li\u003e\n\u003cli\u003eINDUSTRIAL CONTROL\u003c\/li\u003e\n\u003cli\u003eFACTORY AUTOMATION\u003c\/li\u003e\n\u003cli\u003ePART HANDLERS\u003c\/li\u003e\n\u003cli\u003ePHOTOGRAPHIC PROCESSING\u003c\/li\u003e\n\u003cli\u003eELECTRICAL HEATERS\u003c\/li\u003e\n\u003cli\u003eMOTOR SPEED CONTROL\u003c\/li\u003e\n\u003cli\u003eSOLENOID\/COIL PROTECTORS\u003c\/li\u003e\n\u003cli\u003eMEDICAL ANALYZERS\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":47048951038124,"sku":"G152","price":34.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/G152.jpg?v=1787654239"},{"product_id":"contactless-automatic-wardrobe-led-light-with-fade-effect","title":"Contactless Automatic Wardrobe LED Light with Fade Effect","description":"\u003cp\u003eContact-less controlled automatic wardrobe light turns on the LED when you open the wardrobe door. Τhe project is based on Hall effect IC including LED driver and tiny magnet. Board doesn’t require any mechanical switch. When magnet is close to the board, LED is off, when you open the wardrobe door magnet goes far from hall IC and its turn on the LED, the IC also has special features like soft start and soft off. This board can be used in other applications like Automotive Gloves boxes and Storage, task lighting, automotive vanity mirrors.  The APS13568 is the heart of the project. The IC can drive LED current up to 150mA. I have set the current 100mA approx. with help of R3. C2 is provided to set the FADE-IN\/FADE-OUT time. The value of C2 can be changed as per application requirement.\u003c\/p\u003e\n\u003cp\u003eThe IC is an integrated circuit that combines an ultrasensitive, Omni polar, micro power Hall-effect switch with a linear programmable current regulator providing up to 150 mA to drive high brightness LEDs. The Omni polar Hall Effect switch provides contactless control of the regulated LED current, which is set by a single reference resistor R3. This highly integrated solution offers high reliability and ease of design compared to a discrete solution. The Hall-effect switch operates with either a north or a south magnetic pole. The switch output polarity can be set with an external pull down on the POL input pin. This allows the user to select whether the APS13568 switch output goes low when a magnet is present or when the magnetic field is removed. Chopper stabilization provides low switch point drift over temperature. The LED is turned on when the EN input goes low. This active low input can be connected directly to the Hall switch output, SO, to turn the LED on when the switch output goes low. This flexible solution allows the user to connect additional slave switches, LED drivers, PWM, or microprocessor inputs to control when the LED is on. Optionally, an external capacitor can be used to adjust the fade-in\/fade-out feature. On-board protection for shorts to ground and thermal overload prevents damage to the APS13568 and LED string by limiting the regulated current until the short is removed and\/or the chip temperature has reduced below the thermal threshold. The integrated Hall-effect switch in the APS13568 is an Omni polar switch. The output switches when a magnetic field perpendicular to the Hall sensor exceeds the operate point threshold, BOPx (B \u0026gt; BOPS or B \u0026lt; BOPN). When magnetic field is reduced below the release point, BRPx (B \u0026lt; BRPS or B \u0026gt; BRPN), the device output goes to the other state. The output transistor is capable of sinking current up to the short-circuit current limit, IOM, which ranges from 30 to 60 mA. The difference in the magnetic operates and release points are the hysteresis, BHYS, of the device. This built-in hysteresis allows clean switching of the output even in the presence of external mechanical vibration and electrical noise. Removal of the magnetic field results in an output state consistent with B \u0026lt; BRPx. Since the output state polarity relative to the magnetic thresholds is user-selectable via the POL pin, reference Table 1 to determine the expected output state.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eThe board has omnidirectional Hall sensor. Default it set to switch on the LED in absence of magnetic field or magnet is not around, it will switch off the LED when magnet is close to the hall sensor IC or in presence of magnetic field. Remove POL Resistor R4 for reverse operation.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSupply 12V DC ( 7-24V Supply Possible)\u003c\/li\u003e\n\u003cli\u003eLED Current 100mA (LED Current can be set to 150mA with help of R3)\u003c\/li\u003e\n\u003cli\u003eSelectable Output Polarity\u003c\/li\u003e\n\u003cli\u003eFADE-IN\/FADE-OUT ( Soft On\/Off)\u003c\/li\u003e\n\u003cli\u003eBuilt In Short Circuit Protection, Thermal Protection, Reverse Battery and Load Dump Protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":47049298280620,"sku":"G153","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/G153A.jpg?v=1787656331"},{"product_id":"under-over-voltage-and-current-protection-switch","title":"Under\/Over Voltage and Current Protection Switch","description":"\u003cp\u003eThis simple project allows users to design an\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eunder-voltage, over-voltage, under-current,\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eover-current\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprotection switch. It is a highly useful system for safeguarding electrical loads against abnormal power or current conditions.\u003c\/p\u003e\n\u003cp\u003eThe project features a relay with\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eoptocoupler\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003einput, a current-sensing circuit based on the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eINA195\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eamplifier, a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e10mΩ\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eshunt resistor, and a voltage divider network for voltage feedback. It is primarily designed for low-voltage and low-current applications up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e4A\u003c\/strong\u003e, but the relay can handle loads up to 5 A at supply voltages up to 48 V.\u003c\/p\u003e\n\u003cp\u003eThe system can be easily controlled using an Arduino or other microcontroller. Voltage and current feedback signals are fed into the microcontroller’s ADC pins for measurement, while the relay can be switched using a 5 V control signal from the processor.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOver\/Under Current Switch\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe INA195 current-sense amplifier measures the voltage across the shunt resistor and provides an output voltage proportional to the load current. This output can be read by the microcontroller’s ADC to implement over-current or under-current protection logic.\u003c\/p\u003e\n\u003cp\u003eThe INA195 has a fixed gain of 100 V\/V, providing an output of approximately 1 V per ampere of load current. For safety and relay handling limits, the recommended maximum current is below 5A. The system is designed for load voltages up to 48 V, ensuring that the ADC feedback voltage remains below 5 V.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOver\/Under Voltage Switch\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA resistor divider network, formed by R5 = 10 kΩ and R10 = 1 kΩ, is used to scale down the load voltage for ADC measurement. This feedback allows the controller to detect both over-voltage and under-voltage conditions. At 48 V input, the divider provides approximately 4.364 V, and at 5 V input, about 0.455V.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSupply 12V DC Relay and Current Sensor INA195\u003c\/li\u003e\n\u003cli\u003eRelay Trigger Input 5V 20mA\u003c\/li\u003e\n\u003cli\u003eCurrent Sensor Output 1V\/A (5V at 5Amps)\u003c\/li\u003e\n\u003cli\u003eLoad Up to 5Amps, Load Supply Up to 48V DC\u003c\/li\u003e\n\u003cli\u003eLoad Power Supply Feedback 4.364 @ 48V, 0.455 @ 5V Supply\u003c\/li\u003e\n\u003cli\u003e4 x 4 mm PCB Mounting Holes\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 35.56 x 35.40 mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":47170997289132,"sku":"G154","price":9.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/G154A.jpg?v=1789027289"},{"product_id":"pwm-heater-driver","title":"PWM Heater Driver","description":"\u003cp\u003eThe project presented here is a high-current adjustable PWM (Pulse Width Modulation) source, designed to drive various loads such as PTC (Positive Temperature Coefficient) devices, DC motors, solenoids, high-power LEDs, and valves. The project consists of three main components: an\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSG3525\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ePWM generator, an\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eMCP4015\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMOSFET gate driver, and a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eMOSFET\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor load driving.\u003c\/p\u003e\n\u003cp\u003eThe key features of this project include adjustable\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ePWM\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003efrequency\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esettings. A multiturn trimmer pot is provided for precise frequency and PWM adjustment, allowing for fine-tuning of the output signal. Screw terminals are included for easy connection of the load and power supply, and an onboard LED indicator provides visual confirmation of power presence.\u003c\/p\u003e\n\u003cp\u003eThe board can handle currents up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e3A\u003c\/strong\u003e, with a PWM duty cycle adjustment range of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e0 to 100%\u003c\/strong\u003e. The frequency span is also adjustable, ranging from\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e500 Hz to 6.5 kHz\u003c\/strong\u003e. This makes the project suitable for a wide range of applications that require\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ehigh-current PWM\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econtrol.\u003c\/p\u003e\n\u003cp\u003eTo operate the board with higher voltages, two separate power supplies are required. The load supply can be connected up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e40V\u003csub\u003eDC\u003c\/sub\u003e\u003c\/strong\u003e, while the gate driver supply should be connected to a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e12V\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eto 15V\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDC source. To power the gate driver, use connector CN3, where Pin 2 should be connected to the 12V-15V DC supply and Pin 3 should be connected to ground (GND).\u003c\/p\u003e\n\u003cp\u003eFor the load power, use connector CN1, where Pin 1 should be connected to the positive terminal of the load power supply (up to 40V DC) and Pin 2 should be connected to ground (GND). By using dual power supplies and following these connection guidelines, the board can safely operate with higher voltages up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e40V\u003csub\u003eDC\u003c\/sub\u003e\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePower Supply 12V to 15V DC\u003c\/li\u003e\n\u003cli\u003eDuty Cycle Adjustable 0 to 100% (Adjustable Current 0 to 3A)\u003c\/li\u003e\n\u003cli\u003eFrequency Adjustable 500Hz to 6.5Khz\u003c\/li\u003e\n\u003cli\u003eOn Board PWM LED\u003c\/li\u003e\n\u003cli\u003eOn Board Multiturn Trimmer for Frequency, PWM Setting\u003c\/li\u003e\n\u003cli\u003eScrew Terminal for Load and Power Connections\u003c\/li\u003e\n\u003cli\u003e4 x 4 mm PCB Mounting Holes\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 39.37 x 34.93 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eConnections\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCN1 Load Power: Pin 1 = +12V to 15V DC, Pin 2 = GND\u003c\/li\u003e\n\u003cli\u003eCN2 Load: Pin 1 = + Load, Pin 2 = -Load\u003c\/li\u003e\n\u003cli\u003eCN3 Jumper: Closed Pin 1 and Pin 2 VL\/VC Using Shunt for 12V to 15V Operation\u003c\/li\u003e\n\u003cli\u003eFor Power Up to 40V DC CN1 Pin 1 40V DC, Pin 2 = GND, CN3 Pin 2 = 12V to 15V DC and Pin 3 = GND\u003c\/li\u003e\n\u003cli\u003eD2 LED: Display PWM\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":47171014459564,"sku":"G155","price":22.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/G155A.jpg?v=1789027637"},{"product_id":"solenoid-relay-valve-driver-with-current-regulation","title":"Solenoid, Relay, Valve Driver with Current Regulation","description":"\u003cp\u003eThe project presented here is a PWM current driver for solenoids, Relays, and valves. The board will regulate the current with a well-controlled waveform to activate and reduce power dissipation at the same time. The solenoid current is ramped up fast to ensure the opening of the valve or relay. After the initial ramping, the solenoid current is kept at peak value to ensure the correct operation, after which it is reduced to a lower hold level in order to avoid thermal problems and reduce power dissipation.\u003c\/p\u003e\n\u003cp\u003eThe peak current duration is set at\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e78ms\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith an external capacitor C2. The current ramp peak level can be adjusted using the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ePR1\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003etrimmer potentiometer in the range\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e83mA to 250mA\u003c\/strong\u003e, the default PWM frequency is\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e20KHz\u003c\/strong\u003e, PWM frequency can be changed between\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e20Khz to 60Khz\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eusing the external resistor R4. The enable pin has an internal pull-up, so normally chip is enabled, pulling down the enable pin brings the chip into disable mode.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePower Supply 6V to 24V DC\u003c\/li\u003e\n\u003cli\u003eLoad Current up to 250mA\u003c\/li\u003e\n\u003cli\u003ePeak Current Duration 78mS\u003c\/li\u003e\n\u003cli\u003ePeak Current Adjustable range 83mA to 250mA\u003c\/li\u003e\n\u003cli\u003eStart-Up Delay Approx 25uS\u003c\/li\u003e\n\u003cli\u003ePWM Frequency 20Khz\u003c\/li\u003e\n\u003cli\u003eOn Board Switch to disable the output\u003c\/li\u003e\n\u003cli\u003eEnable Pin for External Connector\u003c\/li\u003e\n\u003cli\u003eHeader Connector for Power and Solenoid\u003c\/li\u003e\n\u003cli\u003eFast Ramp-Up of Solenoid Current to Guarantee Activation\u003c\/li\u003e\n\u003cli\u003eIntegrated Sense Resistor for Regulating Solenoid Current\u003c\/li\u003e\n\u003cli\u003eSolenoid Current is Reduced in Hold Mode for Lower Power and Thermal Dissipation\u003c\/li\u003e\n\u003cli\u003eInternal Supply Voltage Regulation\u003c\/li\u003e\n\u003cli\u003eThermal Shutdown, Threshold 160 Degree Centigrade\u003c\/li\u003e\n\u003cli\u003eUndervoltage Lockout (UVLO), Threshold 4.6V\u003c\/li\u003e\n\u003cli\u003eCompact Design\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 22.23 x 17.78mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eConnections and Other Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCN1: Pin 1 Enable (High = Enable, Low = Disable) High = 4V to 7V, Pin 2 = GND\u003c\/li\u003e\n\u003cli\u003eCN2: Pin 1 VCC 6V to 24V DC, Pin 2 = GND\u003c\/li\u003e\n\u003cli\u003eSL1: Pin 1 = Solenoid, Pin 2 VCC (Connections for Solenoid)\u003c\/li\u003e\n\u003cli\u003eD2: Power LED\u003c\/li\u003e\n\u003cli\u003eSW1: Disable Switch Push to Disable\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":47171096182956,"sku":"G156","price":22.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/G156A.jpg?v=1789028170"},{"product_id":"simple-smps-85-265vac-input-with-output-12vdc-750ma-1","title":"Simple SMPS, 85-265VAC Input with Output 12VDC @ 750mA","description":"\u003cp\u003eThis compact\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSwitch-Mode Power Supply (SMPS)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis built around the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eTNY266\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003echip, offering a cost-effective solution for various applications, including power adapters and LED drivers. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSMPS\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econsists of a bridge rectifier, a DC bus capacitor, the TNY266 switch IC, a rectifier diode, and a PC817 optocoupler for feedback and fault condition monitoring.\u003c\/p\u003e\n\u003cp\u003eThe board features screw terminals for easy connection of AC input and DC output, as well as an onboard LED indicator for output voltage. Notably, no auxiliary power is required to drive the chip, making it a highly efficient design.\u003c\/p\u003e\n\u003cp\u003eA simple 4-pin transformer is used, which can be readily sourced from online marketplaces such as\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.aliexpress.com\/item\/32967806183.html\"\u003eAliExpress\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.ebay.com\/itm\/196924396117\"\u003eeBay\u003c\/a\u003e. This makes it an ideal solution for DIY enthusiasts and professionals alike, looking for a reliable and affordable SMPS solution.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePower Input 85-265V AC\u003c\/li\u003e\n\u003cli\u003eOutput 12V, 750mA (Output +\/-5%)\u003c\/li\u003e\n\u003cli\u003eScrew Terminals for AC Input and DC Output\u003c\/li\u003e\n\u003cli\u003eOperating Switching Frequency 132Khz\u003c\/li\u003e\n\u003cli\u003e4 x 4 mm Mounting Holes\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 69.06 x 25.88 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTransformer\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePrimary winding 0.8mH, Turn ratio 90:10\u003c\/li\u003e\n\u003cli\u003eMagnetic Core EE16, with 6Pin Bobin, Pin 1, 3 + 4,6 (Pin 2, Pin 5 NC)\u003c\/li\u003e\n\u003cli\u003ePrimary 4 in 6 out, 90T, 0.2mm, 0.8mH inductance\u003c\/li\u003e\n\u003cli\u003eSecondary 1 in 3 out, 11T, 0.5mmx2 double-wire winding\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":47171205595308,"sku":"G157","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/G157A.jpg?v=1789029789"},{"product_id":"high-current-isolated-gate-driver-for-igbts","title":"High Current Isolated Gate Driver for IGBTs","description":"\u003cp\u003eThis project design consists of galvanically isolated\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003esingle channel gate driver\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIC and dedicated isolated DC-DC gate drive power supply with bipolar output\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e+15V\/-9V\u003c\/strong\u003e. This compact module can control IGBTs in inverters. The isolated high current IGBT gate driver module is a simple solution for power drivers, consisting of a gate driver chip\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1ED3124MC12H\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand an isolated\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e2W DC-DC\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econverter\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e(R12P21509D).\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis module is optimized for high-frequency operations and can provide high gate driver currents up to\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003e14A\u003c\/strong\u003e, making it suitable for applications such as half-bridge, full-bridge, and single IGBT.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLogic input:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor the output switching behavior there are two possible input modes to control the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eIGBT.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAt non-inverting mode IN+ controls the driver output while IN- is set to low. At inverting mode IN- controls the driver output while IN+ is set to high. A minimum input pulse width is defined to filter occasional glitches.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDriver outputs:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe output driver section uses\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eMOSFETs\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto provide a rail-to-rail output. This feature permits that tight control of gate voltage during on-state and short circuit can be maintained as long as the driver’s supply is stable. Due to the low internal voltage drop, switching behavior of the IGBT is predominantly governed by the gate resistor. Furthermore, it reduces the power to be dissipated by the driver.\u003c\/p\u003e\n\u003cp\u003eSingle-channel\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003e5.7 kV (rms)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eisolated gate driver IC with separate output, Galvanically isolated coreless transformer gate driver, For use with 600 V\/650 V\/1200 V\/1700 V\/2300 V IGBTs\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInput Supply 12V DC\u003c\/li\u003e\n\u003cli\u003eDC-DC Converter Output +15V DC\/ -9V DC\u003c\/li\u003e\n\u003cli\u003eHeader Connector for Input Power and Signal Input\u003c\/li\u003e\n\u003cli\u003eUp to 14.0 A typical peak output current\u003c\/li\u003e\n\u003cli\u003eDC-DC Converter Isolation 6.4VKVDC\u003c\/li\u003e\n\u003cli\u003eGate Driver Chip Isolation 5.7 kV (rms)\u003c\/li\u003e\n\u003cli\u003e3 V and 5 V input supply voltage\u003c\/li\u003e\n\u003cli\u003eHigh common-mode transient immunity CMTI \u0026gt; 200 kV\/µs\u003c\/li\u003e\n\u003cli\u003eOutput Header Connector\u003c\/li\u003e\n\u003cli\u003eOn Board Power LED (Output DC-DC Converter)\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 31.12 x 23.81 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":47171860955308,"sku":"G158","price":32.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/G158A.jpg?v=1789039670"}],"url":"https:\/\/dotfry.com\/collections\/power-drivers.oembed?page=2","provider":"dotfry","version":"1.0","type":"link"}