The SRK2000 smart driver implements a control scheme specific to secondary-side synchronous rectification in LLC resonant converters using a transformer with a center-tapped 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 individually controlled, and an interlocking logic prevents both synchronous rectifier MOSFETs from being turned on simultaneously.

Product features:

• Secondary-side synchronous rectifier controller optimized for LLC resonant converter

• Current reverse protection

• Safe management of load transients, light loads, and startup conditions

• Intelligent automatic sleep mode at light load

• Dual gate driver source and 3.5A sink drive current for 1 A N-Channel MOSFET

• Operating voltage range from 4.5 to 32 V

• Programmable UVLO with Hysteresis

• 250 µA static consumption

• Operates up to 500 kHz

• Available in SO-8 package

Application:

• All-in-one PC

• High-power AC-DC adapter

• 80+/85+ compatible ATX SMPS

• 90+/92+ compatible server SMPS

• Industrial SMPS