STSR2 - STMicroelectronics

STSR2 FORWARD SYNCHRONOUS RECTIFIERS SMART DRIVER

STSR2 Smart Driver IC provides two complementary high current outputs to drive Power Mosfets. The IC is dedicated to properly drive secondary Synchronous Rectifiers in medium power, low output voltage, high efficiency Forward Converters. From a synchronizing clock input, STSR2 generates two driving signals with the self-setting of dead time between complemen.

Features

r, synchronized by the clock signal. A fixed anticipation in turning-off the OUT GATE1 with respect to the clock signal transition is provided, SCHEMATIC DIAGRAM Vcc 2 while the anticipation in turning off the OUTGATE2 can be set through external components. The adopted transitions revelation mechanism makes circuit operation independent by the forward magnetic reset technique used, avoiding most of the common problems inherent in self-driven synchronous rectifiers. A special Inhibit function allows the shut-off of OUTGATE2. This feature makes discontinuous conduction mode possible and preven.