{"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","url":"https:\/\/dotfry.com\/products\/half-bridge-driver-with-inbuilt-oscillator-1","provider":"dotfry","version":"1.0","type":"link"}