iW671 Datasheet | Dialog Semiconductor

i W671 Digital Green-Mode Synchronous Rectifier Controller 1 Description The i W671 is a high performance synchronous rectifier controller with an integrated MOSFET driver for flyback converters operating at discontinuous conduction mode. bined with the MOSFET, the i W671 can emulate the diode rectifier at the secondary side of the flyback to reduce conduction loss. The i W671 determines the timing of the driver by sensing the voltage across the RDS(ON) to achieve lossless sensing. The i W671 uses proprietary digital adaptive turnoff control technology to minimize the turn-off deadtime of the synchronous rectifier so that the parallel Schottky diode required by conventional synchronous rectifiers can be eliminated. The integrated driver has strong driving capability for high efficiency. The operating power consumption of the controller excluding the driver is less than 4m W at no load to achieve the ultra-low no-load power consumption for 5V applications. The i W671 integrates a pulse...