The RT7220B is a high performance Synchronous Rectifier (SR) controller for flyback converters operating in the Continuous Conduction Mode (CCM), the Discontinuous Conduction Mode (DCM) and the Quasi-Resonant (QR) mode. The RT7220B senses the drain voltage of MOSFET to determine SR gate on/off so as to minimize turn-off dead-time and enhance efficiency.
The RT7220B is such a special design to support a wide output voltage range of 3.3V to 13V, of which a built-in HV LDO provides sufficient drive voltage for the MOSFET gate driver at low output voltage.
Furthermore the RT7220B offers a Green Mode operation, in light load condition, by which the RT7220B counts the gate pulse of MOSFET to determine when to enter green mode to reduce operation current under 120μA.
- Travel Adapters with Fast Charge Protocols (e.g., FCP, SCP, AFC and QC2.0/QC3.0)
- Travel Adapters with USB PD Type-C Control
- Netcom Adapters