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