FIXED 60 KHZ 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 AUTORESTART

DESCRIPTION

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 benefits: – 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.