RT7220D Description
The RT7220D is a Synchronous Rectifier (SR) controller for Flyback converters operating in Continuous Conduction Mode (CCM), Discontinuous Conduction Mode (DCM) and Quasi-Resonant (QR) mode. The RT7220D will sense the drain voltage of MOSFET to determine SR gate on/off so as to minimize turn-off dead-time and enhance efficiency. The RT7220D supports the wide output voltage range from 3V to 21V, and a HV LDO is...
RT7220D Key Features
- Suitable for Flyback Converter in CCM, DCM, and Quasi-Resonant (QR) Mode
- Suitable for 3V to 21V VOUT Range
- ZVS Function to Optimize Efficiency
- <1.65mA Operating Current in ZVS Mode
- <250A Operating Current in Green Mode
- Built-In HV LDO to Supply SR Driver when VOUT
- Protection
- SR Gate Driver with 6V Clamp
- SR Gate Initial Pull-Low before Start-Up
- SR Minimum Off-Time