WT7132BN
The WT7132BN is a high-performance synchronous rectification controller. It is used to control a secondary-side synchronous rectification MOSFET in a flyback switch mode power supply. Without external auxiliary winding supplies, the WT7132BN can easily provide power to the VDD. It can be powered by either the VIN or VD pin. The WT7132BN built-in several circuits to minimize external part counts and overall total system cost. By sensing the voltage across the conduction resistance of MOSFET, the controller can determine the turn-on/turn-off timing of the internal driver to achieve the lowest loss and high speed sensing. Due to the 120V voltage rating of VD pin, the controller is suitable for high output current and wide output voltage range application (e.g., PD3.0 and PPS, from 5V to 21V).
Features
- Secondary side controller optimized for USB PD
- VDS MOSFET direct-sensing (120V)
- Low startup current
- Works with standard and logic level SR MOSFETS
- Suitable for flyback CCM/DCM/QR/Valley switching operation
- No need the auxiliary winding
- Supports both High-Side and Low-Side Rectification
- Unique dynamic DRV control technology for fast turn off
- Outline package (Green Package): SOT-26
- Secondary side controller optimized for USB PD
应用 / 电路图
应用领域
