SRK2000A - STMicroelectronics

SRK2000A Synchronous rectifier smart driver

The SRK2000A smart driver implements a control scheme specific to secondary side synchronous rectification in LLC resonant converters that use a transformer with center tap secondary winding for full wave rectification. It provides two high current gate drive outputs, each capable of driving one or more N-channel Power MOSFETs. Each gate driver is controlled.

Features

 Secondary side synchronous rectifier controller optimized for LLC resonant converters
 Protection against current reversal
 Safe management of load transient, light load and startup condition
 Matched turn-off thresholds
 Intelligent automatic sleep mode at light load
 Dual gate driver for N-channel MOSFETs with 1 A source and 3.5 A sink drive current
 Operating voltage range 4.5 to 32 V
 Programmable UVLO with hysteresis
 250 µA quiescent consumption
 Operating frequency up to 500 kHz
 Available in SO-8 package Applications
 All-in-one PC
 High-power AC-DC adapters
 80+/85+ com.