NEX81801DA Overview
The NEX81801DA and NEX81802DA (NEX81801/2DA) are high performance synchronous rectification controllers used in switching mode power supplies. It supports operation in Discontinuous Conduction Mode (DCM), Continuous Conduction Mode (CCM) and quasi-resonant flyback converters. The NEX81801/2DA regulates the forward drop voltage of an external synchronous rectifier (SR) MOSFET in two stages.
NEX81801DA Key Features
- Supports DCM, CCM, QR operation
- Supports up to 800 kHz switching frequency
- Standard and logic level MOSFET driving capability
- Wide output range down to 0 V with 2-channel VCC
- No need for auxiliary winding for high-side or low
- Smart proportional gate driver for fast SR turn-off at
- Adjustable turn-on blanking time for increased
- Proprietary adaptive turn-on detection prevents SR
- 10 ns typical turn-off propagation delay
- Available in a TSOT23-6 FC package