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STSR3 Datasheet SYNCHRONOUS RECTIFIERS SMART DRIVER

Manufacturer: STMicroelectronics

General Description

STSR3 Smart Driver IC provides a high current outputs to properly drive secondary Power Mosfets used as Synchronous Rectifier in low output voltage, high efficiency Flyback Converters.

From a synchronizing clock input, withdrawn on the secondary side of the isolation transformer, the IC generates a driving signal with set dead times with respect to the primary side PWM signal.

The IC operation prevents secondary side shoot-through conditions at turn-on of the primary switch providing anticipation in turn-off the output.

Overview

STSR3 SYNCHRONOUS RECTIFIERS SMART DRIVER FOR FLYBACK s s s s s s SUPPLY VOLTAGE RANGE: 4V TO 5.5V TYPICAL PEAK OUTPUT CURRENT: (SOURCE 2A, SINK 3.5A) OPERATING FREQUENCY: 30 TO 750 KHz SMART TURN-OFF ANTICIPATION TIMING AUTOMATIC TURN OFF FOR DUTY CYCLE LESS THAN 14% POSSIBILITY TO OPERATE IN DISCONTINUOUS MODE SO-8 www.DataSheet4U.