{"product_id":"tl494-based-pwm-generator-module","title":"TL494-Based PWM Generator Module","description":"\u003cp\u003eThis is a versatile\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ePWM generator module\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ebuilt around the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eTL494\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ePWM control chip. The flexible design allows for multiple component configurations to support various applications. Users can customize the module by installing only the components required for their specific application while leaving out unnecessary components.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePower Supply 7V to 40V DC\u003c\/li\u003e\n\u003cli\u003eComplete PWM Power-Control Circuitry\u003c\/li\u003e\n\u003cli\u003eUncommitted Outputs for 200-mA Sink or Source Current\u003c\/li\u003e\n\u003cli\u003eOutput Control Selects Single-Ended or Push-Pull Operation\u003c\/li\u003e\n\u003cli\u003eInternal Circuitry Prohibits Double Pulse at Either Output\u003c\/li\u003e\n\u003cli\u003eVariable Dead Time Provides Control Over Total Range\u003c\/li\u003e\n\u003cli\u003eInternal Regulator Provides a Stable 5-V REF\u003c\/li\u003e\n\u003cli\u003eReference Supply With 5% Tolerance\u003c\/li\u003e\n\u003cli\u003eCircuit Architecture Allows Easy Synchronization\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 29.21 x 27.15 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCore Features of TL494\u003c\/h3\u003e\n\u003cp\u003eThe TL494 integrates all essential PWM control functions into a single chip. Though primarily designed for power supply control, its versatility makes it suitable for various applications. The device includes two error amplifiers, an adjustable on-chip oscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, a precision 5V (±5%) regulator, and output control circuits.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eError amplifiers operate within a common-mode voltage range of -0.3V to VCC – 2V\u003c\/li\u003e\n\u003cli\u003eDead-time control comparator features a fixed offset providing approximately 5% dead time\u003c\/li\u003e\n\u003cli\u003eOscillator can be bypassed by connecting RT to the reference output and providing a sawtooth input to CT\u003c\/li\u003e\n\u003cli\u003eSupports synchronous operation in multiple-rail power supplies\u003c\/li\u003e\n\u003cli\u003eOutput configuration flexibility through uncommitted output transistors\u003c\/li\u003e\n\u003cli\u003eCommon-emitter or common-collector output selection via resistor pairs R17+R18 and R12+R13\u003c\/li\u003e\n\u003cli\u003eSupports both push-pull and single-ended output operation\u003c\/li\u003e\n\u003cli\u003eArchitecture prevents double-pulsing of outputs during push-pull operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eComponent Specification\u003c\/h3\u003e\n\u003cp\u003eAll passive components (resistors and capacitors) used on the board are in 0805 SMD package size.\u003c\/p\u003e\n\u003ch3\u003eSample Application – Adjustable PWM Generator\u003c\/h3\u003e\n\u003cp\u003eThis module can be configured as an adjustable PWM generator with the following features:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDuty cycle adjustment range: 5% to 95% (controlled via multiturn trimmer potentiometer PR1)\u003c\/li\u003e\n\u003cli\u003eFrequency adjustment range: 100Hz to 50kHz (controlled via multiturn trimmer potentiometer PR2)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor implementation, please refer to the schematic diagram and install only the components specified for this configuration.\u003c\/p\u003e\n\u003ch3\u003eConnector and Component Details\u003c\/h3\u003e\n\u003cp\u003eCN1: Jumper Configuration\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUse jumper closures (shunts) to short:\n\u003cul\u003e\n\u003cli\u003ePins 1 and 2\u003c\/li\u003e\n\u003cli\u003ePins 3 and 4\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eD1: LED Indicator\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFunctions as power status indicator\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eJ1: Output Voltage Selection Jumper\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eShort with Ref: Provides 5V PWM output\u003c\/li\u003e\n\u003cli\u003eShort with VCC: Provides high voltage PWM output\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePR1: PWM Duty Cycle Adjustment\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTrimmer potentiometer for adjusting duty cycle\u003c\/li\u003e\n\u003cli\u003eAdjustment range: approximately 5% to 95%\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePR2: Frequency Adjustment\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTrimmer potentiometer for frequency control\u003c\/li\u003e\n\u003cli\u003eAdjustment range: 100Hz to 50kHz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCN2: Main Connection Terminal (6-pin)\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePin 1: VCC input (7V to 40V)\u003c\/li\u003e\n\u003cli\u003ePin 2: Collector 2 output\u003c\/li\u003e\n\u003cli\u003ePin 3: Collector 1 output\u003c\/li\u003e\n\u003cli\u003ePin 4: Emitter 2 output (PWM Output)\u003c\/li\u003e\n\u003cli\u003ePin 5: Emitter 1 output (PWM Output)\u003c\/li\u003e\n\u003cli\u003ePin 6: Ground (GND)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCN3 and CN4: Not in use\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":47193113034924,"sku":"D109","price":12.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/D109A.jpg?v=1789212548","url":"https:\/\/dotfry.com\/products\/tl494-based-pwm-generator-module","provider":"dotfry","version":"1.0","type":"link"}