SSL4120T Description
The SSL4120T 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. The efficient operation of the PFC is achieved by implementing functions such as quasi-resonant operation at high power...
SSL4120T Key Features
- Integrated PFC and HBC controllers
- Universal mains supply operation (70 V to 276 V (AC))
- High level of integration resulting in a low external ponent count and a cost
- Enable input (enable only PFC or both 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