Viper22a SMPS Controller IC

VIPER22A Specifications
SMPS Switching Controller IC
AC to DC converter
Operating Voltage: 9V to 38V
Oscillator Frequency: 60 kHz typically
Mosfet Drain to Source Voltage: 730V
Off state drain current: 0.1mA
Rise time and Fall time 50ns and 100ns respectively
Available in PDIP and SO 8-pin package

Applications
Low power supply systems
LED drivers
Remote Microcontroller designs
SMPS circuits
Auxiliary power Supply

The VIPER22A is a Popular SMPS controller IC form STMicroelectronics that has been extensively used in AC to DC Converters in offline power circuit designs. This controller IC consists of an in-built PWM controller with a power MOSFET. The MOSFET is connected to the primary side a power transformer which when switched will produce the required output voltage based on transformer design.