Features

 PWM peak current mode controller

 Input operating voltage up to 75 V

 Internal high-voltage start up regulator with 20

mA current capability

 Current sense with programmable blanking

time up to 200 ns

 Programmable fixed frequency up to 1 MHz

 Soft-start up with settable time

 Soft turn off (optionally disabled)

 Dual low-side complementary gate drivers

 Programmable dead time from 10 to 200 ns

between GATE1 and GATE2

 Gate drivers have 1 A peak capability

 GATE2 optionally turned off for reduced

consumption

 80% maximum duty cycle with internal slope

compensation

 Internal pull-up resistor on CTL pin enables the

optocoupler connection

 Operating current consumption < 1.5 mA

 Embedded protections:

– Severe overcurrent protection with latch

after 4 events

– Delayed overload protection with automatic

restart

– Feedback disconnection (OV) protection on

VC

– Thermal shutdown

 High efficiency topologies:

– Flyback, forward

– Flyback with synchronous rectification

– Flyback with active clamp

– Forward with active clamp

Applications

 PoE powered devices such as IP phones,

WLAN access points and network cameras

 Telecom power supplies