WS3412H Overview
The WS3412H is a high precision non-isolated buck driver with active PFC, specially designed for universal input offline constant current LED lighting. The driver with on-chip PFC circuit achieves high power factor and low THD. Operating in critical conduction mode, the power MOSFET switching loss is reduced and the inductor is fully utilized.
WS3412H Key Features
- Internal 650V Power MOSFET
- Active PFC for High Power Factor and Low THD
- Critical Conduction Mode Operation
- System Efficiency up to 95%
- Without auxiliary winding
- Excellent Line and Load Regulation
- ±3% LED Output Current Accuracy
- Thermal Regulation Function
- LED Short/Open Protection
- Current Sensing Resistor Open Protection