Current Mode PWM Controller 1.5A 16-Pin SO T/R

This primary controller I.C., developed in BCD60II technology, has been designed to implement off line or DC-DC power supply applications using a fixed frequency current mode control.Based on a standard current mode PWM controller this device includes some features such as programmable soft start, IN/OUT synchronization, disable (to be used for over voltage protection and for power management), precise maximum Duty Cycle Control, 100ns leading edge blanking on current sense, pulse by pulse current limit, overcurrent protection with soft start intervention, and Standby function for oscillator frequency reduction when the converter is lightly loaded.

CURRENT-MODE CONTROL PWM

SWITCHING FREQUENCY UP TO 1MHz

LOW START-UP CURRENT (< 120µA)

HIGH-CURRENT OUTPUT DRIVE SUITABLE FOR POWER MOSFET (1A)

FULLY LATCHED PWM LOGIC WITH DOUBLE PULSE SUPPRESSION

PROGRAMMABLE DUTY CYCLE

100% AND 50% MAXIMUM DUTY CYCLE LIMIT

STANDBY FUNCTION

PROGRAMMABLE SOFT START

PRIMARY OVERCURRENT FAULT DETECTION WITH RE-START DELAY

PWM UVLO WITH HYSTERESIS

IN/OUT SYNCHRONIZATION

LATCHED DISABLE

INTERNAL 100ns LEADING EDGE BLANKING OF CURRENT SENSE

PACKAGE: DIP16 AND SO16