TDA4605 ,PWM Control IC for SMPS using MOS-Tra...TDA4605CONTROL CIRCUIT FOR SWITCH MODEPOWER SUPPLIES USING MOS TRANSISTORS■ Fold-Back Characteristi ..
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TDA4605-TDA4605-
PWM Control IC for SMPS using MOS-Tra...
September 2003 1/7
TDA4605CONTROL CIRCUIT FOR SWITCH MODE
POWER SUPPLIES USING MOS TRANSISTORS 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
DESCRIPTIONThe IC TDA4605 controls the MOS Power Tran-
sistor and performs all necessary regulation and
monitoring functions in free running flyback con-
verters. Since good load regulation over a wide
load range is attained, this IC is particularly suita-
ble for Consumer as well as Industrial Power Sup-
plies.
Alternative source of the TDA4605 is also availa-
ble from SIEMENS Semiconductors Consumer
Electronics A.G.
Figure 1. Pin Connections
