{"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","url":"https:\/\/dotfry.com\/products\/pwm-heater-driver","provider":"dotfry","version":"1.0","type":"link"}