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Description

The L6591 is a double-ended PWM controller specific to the soft-switched half bridge topology. It provides complementary PWM control, where the high-side switch is driven ON for a duty cycle D and the low-side switch for a duty cycle 1-D, with D

Features

■ Complementary PWM control for soft-switche half bridge with programmable deadtime

■ Up to 500 kHz operating frequency

■ Onboard high-voltage startup

■ Advanced light load management

■ Adaptive UVLO

■ Pulse-by-pulse OCP

■ OLP (latched or autorestart)

■ Transformer saturation detection

■ Interface with PFC controller

■ Latched disable input

■ Input for power-on sequencing or brownout protection

■ Programmable soft-start

■ 4 precision external reference

■ 600 V-rail compatible high-side gate driver with integrated bootstrap diode and high dV/dt immunity

■ SO16N package

Applications

■ High power AC-DC adapter/charger

■ Desktop PC, entry-level server

■ Telecom SMPS