SSL4120 Description
The SSL4120 integrates a Power Factor Corrector (PFC) controller and a controller for a Half-Bridge resonant Converter (HBC) in a multi-chip IC. It provides the drive function for the discrete MOSFET in an up-converter and for the two discrete power MOSFETs in a resonant half-bridge configuration. Efficient PFC operation is achieved by implementing functions for Quasi-Resonant (QR) operation at high-power levels and...
SSL4120 Key Features
- Integrated PFC and HBC controllers
- Universal mains supply operation from 85 V to 305 V (AC)
- High level of integration resulting in a low external ponent count and a cost
- Enable input to enable only the PFC or both the PFC and HBC controllers
- On-chip high-voltage start-up source
- Stand-alone operation or IC supplied from external DC source
- Boundary mode operation with on-time control
- Valley/zero-voltage switching for minimum switching losses
- Frequency limiting to reduce switching losses
- Accurate boost voltage regulation