TDA4605
CONTROL CIRCUIT FOR SWITCH MODE POWER SUPPLIES USING MOS TRANSISTORS
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FOLD-BACK CHARACTERISTI...
TDA4605
CONTROL CIRCUIT FOR SWITCH MODE POWER SUPPLIES USING MOS
TRANSISTORS
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FOLD-BACK CHARACTERISTIC PROVIDES OVERLOAD PROTECTION FOR EXTERNAL DIODES BURST OPERATION UNDER SHORT-CIRCUIT AND NO LOAD CONDITIONS LOOP ERROR PROTECTION SWITCH-OFF IN CASE OF TOO LOW LINE VOLTAGE (under voltage switch-off) LINE VOLTAGE COMPENSATION OF OVERLOAD POINT SOFT-START FOR SMOOTH START-UP CHIP OVER-TEMPERATURE PROTECTION (thermal shutdown) ON-CHIP PARASITIC TRANSFORMER OSCILLATION SUPPRESSION CIRCUITRY DECREASE OF REGULATED VOLTAGE FOR LOW POWER CONSUMPTION
DIP8 (Plastic Package) ORDER CODE : TDA4605
DESCRIPTION The IC TDA4605 controls the MOS Power
Transistor and performs all necessary regulation and monitoring functions in free running flyback converters. Since good load regulation over a wide load range is attained, this IC is particularly suitable for Consumer as well as Industrial Power Supplies. Alternative source of the TDA4605 is also available from SIEMENS Semiconductors Consumer Electronics A.G. PIN CONNECTIONS
SO8 (Plastic Micropackage) ORDER CODE : TDA4605D
REGULATION INPUT PRIMARY CURRENT SIMULATION PRIMARY VOLTAGE MONITORING GROUND
1 2 3 4
8 7 6 5
ZERO CROSSING DETECTOR INPUT SOFT-START SUPPLY VOLTAGE OUTPUT
4605-01.EPS
April 1996
1/6
TDA4605
PIN CONFIGURATION
Pin Number 1 Description Regulating voltage : information input concerning secondary voltage. By comparing the regulating voltage obtained from the regulating winding of the transformer with...