The RT7220E is a Synchronous Rectifier (SR) controller for Asymmetrical Half-Bridge (AHB) converters operating in Critical Conduction Mode (CRM), Cycle Skipping Mode (CSM), and Burst Mode (BM).
The RT7220E detects the drain voltage of the MOSFET to control the on/off state of the SR gate.
Key Features
Suitable for Low-Side SR Control of AHB in CRM, CSM, and BM.
Suitable for 5V to 48V VOUT Range.
Double Pulses Function to Optimize Efficiency
(Works with the AHB Controller RT7795).
Full PDF Text Transcription for RT7220E (Reference)
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RT7220E. For precise diagrams, and layout, please refer to the original PDF.
RT7220E Synchronous Rectifier Controller for Asymmetrical HalfBridge Converters with a Wide Output Voltage Operating Range 1 General Description The RT7220E is a Synchron...
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oltage Operating Range 1 General Description The RT7220E is a Synchronous Rectifier (SR) controller for Asymmetrical Half-Bridge (AHB) converters operating in Critical Conduction Mode (CRM), Cycle Skipping Mode (CSM), and Burst Mode (BM). The RT7220E detects the drain voltage of the MOSFET to control the on/off state of the SR gate. This functionality is intended to minimize turn-off dead-time and deliver sine-wave energy through the SR gate pulses, enhancing efficiency. The RT7220E supports a wide output voltage range from 5V to 48V, and a HV LDO is built-in for the MOSFET gate driver at low output voltage.
RT7220E Datasheet
