This primary controller I.C., developed in BCD60II technology, has been designed to implement offline 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.
Feature
-DCURRENT-MODE CONTROL PWM
-DSWITCHING FREQUENCY UP TO 1MHz
-LOW START-UP CURRENT(<120uA)
-DHIGH-CURRENT OUTPUT DRIVE SUITABLE FOR POWER MOSFET(1A)
-BFULLY LATCHED PWM LOGIC WITH DOUBLE PULSE SUPPRESSION
-PROGRAMMABLE DUTY CYCLE
-100% AND 50% MAXIMUM DUTY CYCLE LIMIT
-STANDBY FUNCTION
-BPROGRAMMABLE SOFT START
-PRIMARY OVERCURRENT FAULT DETECTION WITH RE-START DELAY
-PWM UVLO WITH HYSTERESIS
-DIN/OUT SYNCHRONIZATION
-LATCHED DISABLE
-D INTERNAL 100ns LEADING EDGE |BLANKING OF CURRENT SENSE
-ⅡPACKAGE:DIP16 AND SO16
Feature
- PRIMARYOVERCURRENTFAULTDETECTIONWITHRE-STARTDELAY
- PROGRAMMABLESOFTSTART
- IN/OUTSYNCHRONIZATION
- PWMUVLOWITHHYSTERESIS
- INTERNAL100nsLEADINGEDGEBLANKINGOFCURRENTSENSE
- LATCHEDDISABLE
- PACKAGE:DIP16ANDSO16
- 100%AND50%MAXIMUMDUTYCYCLELIMIT
(Picture: Pinout)
