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HT7A6312_15 Datasheet, PDF (1/10 Pages) Holtek Semiconductor Inc – Low Power Primary Switcher for Off Line SMPS | |||
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HT7A6312
Low Power Primary Switcher for Off Line SMPS
Features
⢠Fixed 60kHz switching frequency
⢠9V to 38V wide range VCC voltage
⢠Wide AC input range from 85VAC to 265VAC
⢠PWM with current mode control
⢠Auxiliary Under Voltage Lock Out with hysteresis
⢠High voltage start-up current source
⢠Excellent standby low power consumption
⢠Over-temperature, Over-current and Over-voltage
protection with auto-restart
⢠Integrated 730V MOSFET
⢠Burst mode under low load conditions
Applications
⢠Off line power supply for battery charger adapters
⢠Standby power supply for TV or monitors
⢠Auxiliary supply for motor control
⢠Air conditioner power supply
⢠Electromagnetic oven power supply
General Description
The HT7A6312 is highly functionally integrated
device which combines an integrated PWM controller
with current mode control and a high voltage power
MOSFET on the same silicon chip.
Typical Power Capability
Type
European (195~265VAC)
US (85~265VAC)
8SOP
8W
5W
8DIP
13W
8W
Typical Performance Characteristics Application Circuit
Isolation Flyback Topology
Snubber Circuit
Vac
VOUT+
VOUT-
SW VCC
HT7A6312
VSS FB
PC817
TL 431
Rev. 1.20
1
July 17, 2015
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