NCP81178 Description
NCP81178 Secondary Synchronous Rectifier Driver for Forward Converters The NCP81178 is a secondary−side synchronous rectifier driver designed for isolated power converters, especially actively clamped forward and fly−back, and asymmetric half−bridge converters. The NCP81178 drives two N−channel MOSFETs on the secondary side in a plementary manner. It accepts a PWM input signal derived from the secondary winding or...
NCP81178 Key Features
- N-Channel Synchronous Rectifier MOSFET Driver
- PWM Input Derived from a Winding on the Main Transformer or
- Internally Generated PWM Threshold Voltage that can be
- Pre-bias Startup Capability
- Primary Shutdown Detection
- Frequency Detection Window
- Wide VIN/VCC Range: 4.5 V to 14 V
- 6 V/150 mA LDO for VCC Supply
- 4.5 A/3.8 A Sink and 3 A Source Drive Capability
- 12 ns PWM Propagation Time