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Updated at 17/06/2025 10:30:15(UTC+8)

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Description

The SRK2000A is a 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. 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 device implements matched turn-OFF MOSFET thresholds. A unique feature of this IC is its intelligent automatic sleep mode. It allows the detection of a low-power operating condition for the converter and puts the IC into a low consumption sleep mode where gate driving is stopped and quiescent consumption is reduced.
Secondary-side synchronous rectifier controller optimized for LLC resonant converters
Protection against current reversal
Safe management of load transient, light load and startup condition
Intelligent automatic sleep mode at light load
Dual gate driver for N-channel MOSFETs with 1A source and 3.5A sink drive current
Programmable UVLO with hysteresis
250µA Quiescent consumption
Operating frequency up to 500kHz

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SRK2000A Specifications

Attribute	Attribute Value

Datasheet	Datasheet
3D Model	3D Model
Mounting Style	Surface Mount
Number of Pins	8 Pin
Case/Package	SOIC-8
Supply Voltage (DC)	4.50V (min)
Output Voltage	11.9 V
Output Current	3.5 A
Supply Current	35 mA
Number of Positions	8 Position
Switching Frequency	500 kHz
Operating Temperature (Max)	150 ℃
Operating Temperature (Min)	-40 ℃
Supply Voltage	4.5V ~ 32V
Supply Voltage (Max)	32 V
Supply Voltage (Min)	4.5 V
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Size-Length	5 mm
Size-Width	4 mm
Size-Height	1.65 mm
Operating Temperature	-40℃ ~ 150℃
Product Lifecycle Status	Active
Packaging	Cut Tape (CT)
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/12/17
ECCN Code	EAR99

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