STMicroelectronics SRK2000A
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 separately and an interlocking logic circuit prevents the two synchronous rectifier MOSFETs from conducting simultaneously.| Part No. | SRK2000A |
|---|---|
| Datasheet | SRK2000A Download |
| Manufacturer |  STMicroelectronics |
| Description | Synchronous rectifier smart driver |
| Buy | Stock & Price |
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+ compliant ATX SMPS
● 90+/92+ compliant server SMPS
● Industrial SMPS Datasheet - production data
DESCRIPTION
The control scheme in this IC allows for each synchronous rectifier to be switched on as the corresponding half-winding starts conducting and switched off as its current goes to zero. The SRK2000A device implements matched turn-off MOSFET thresholds. A unique feature of this IC is its intelligent automatic sleep mode.
