VIPER22A

The VIPER22A is designed as low power off line SMPS primary switcher. It combines a dedicated current mode PWM controller with a high voltage power MOSFET on the same silicon chip. VIPER22A applications cover off line power supplies for battery charger adapters, standby power supplies for TV or monitors, auxiliary supplies for motor control, etc.

VIPER22A has six features. (1) Fixed 60 kHz switching frequency. (2) 9V to 38V wide range Vdd voltage. (3) Current mode control. (4) Auxiliary undervoltage lockout with hysteresis. (5) High voltage start up current source. (6) Overtemperature, overcurrent and overvoltage protection with autorestart. That are all the main features.

Some absolute maximum ratings of VIPER22A have been concluded into several points as follow. (1) Its switching drain source voltage would be from -0.3V to 730V. (2) Its start up drain source voltage would be from -0.3V to 400V. (3) Its continuous drain current would be internally limited. (4) Its supply voltage would be from 0V to 50V. (5) Its feedback current would be 3mA. (6) Its electrostatic discharge would be 200V for machine model and would be 1.5kV for charged device model. (7) Its junction operating temperature would be internally limited. (8) Its case operating temperature range would be from -40°C to 150°C. (9) Its storage temperature range would be from -55°C to 150°C.

Also some electrical characteristics about VIPER22A. (1) Its drain to source voltage would be min 730V. (2) Its off state drain current would be max 0.1mA. (3) Its static drain to source on state resistance would be typ 15 and max 17. (4) Its drain capacitance would be typ 40pF. (5) Its fall time would be typ 100ns. (6) Its rise time would be typ 50ns. And so on. If you have any question or suggestion or want to know more information about VIPER22A please contact us for details. Thank you!