SRM4010
DESCRIPTION
The SRM4010 Module is a plete solution for implementing very high efficiency Synchronous Rectification and eliminates many of the problems with selfdriven approaches. The module connects to the transformer secondary of a Forward Converter to provide plete high current rectification at output voltages ranging from 5 volts down to 1.0 volt, in a thermally efficient surface mount package. Rectification Efficiency as high as 95% is achieved by avoiding cross conduction. Dedicated Ics provide effective Gate drive of the ultra low Rds(on) MOSFETs used in the module. In conventional self-driven approaches, the MOSFET drive ends as soon as the power transformer finishes resetting. This causes increased losses as the duty cycle decreases. The SRM4010 control circuitry drives either the Forward or the Catch MOSFET over virtually the entire duty cycle. Only a small prediction time, typically 100 ns, is needed to avoid cross conduction. The SRM 4010 is designed to handle large sudden...
