STMicroelectronics | SRK2000DTR

The SRK2000DTR is a synchronous rectifier smart driver that implements a control scheme specific to secondary-side synchronous rectification in LLC resonant converters, available in surface mount SOIC-8 package.

This device uses a transformer with center-tap secondary winding for full-wave rectification and provides two high-current gate-drive outputs, each capable of driving one or more N-channel Power MOSFETs.

Features:

• Operating voltage range 4.5 to 32 V
• Programmable UVLO with hysteresis
• 250 μA quiescent consumption
• Operating frequency up to 500 kHz

• Protection against current reversal
• SO8 package
• Safe management of load transient, light load and startup condition
• Intelligent automatic sleep-mode at light load
• Secondary-side synchronous rectifier controller optimized for LLC resonant converters
• Dual gate driver for N-channel MOSFETs with 1 A source and 3.5 A sink drive current

Applications:

• All-in-one PC
• High-power AC-DC adapters
• 80+/85+ compliant ATX SMPS
• 90+/92+ compliant server SMPS
• Industrial SMPS