VIPer12ADIP - E
VIPer12AS - E
Low Power OFF-Line SMPS Primary Switcher
■ Fixed 60kHZ Switching Frequency
■ 9V to 38V Wide Range VDD Voltage
■ Current Mode Control
■ Auxiliary Undervoltage Lockout with Hysteresis
■ High Voltage Start-up Current Source
■ Overtemperature, Overcurrent and
Overvoltage Protection with Auto-Restart
■ Typical power capability
– European (195 - 265 Vac) 8W for SO-8,
13W for DIP-8
– European (85 - 265 Vac) 5W for SO-8,
8W for DIP-8
The VIPer12A combines a dedicated current
mode PWM controller with a high voltage Power
MOSFET on the same silicon chip.
Typical applications cover off line power supplies
for battery charger adapters, standby power
supplies for TV or monitors, auxiliary supplies for
motor control, etc.
The internal control circuit offers the following
– Large input voltage range on the VDD pin
accommodates changes in auxiliary supply
voltage. This feature is well adapted to
battery charger adapter configurations.
– Automatic burst mode in low load condition.
– Overvoltage protection in HICCUP mode.
R1 FF Q
R2 R3 R4
S FF Q
_ 0.23 V