Features

•

730 V avalanche rugged power MOSFET

•

PWM controller

•

1.2 V reference voltage

•

Frequency jittering

•

40 mW no load input power at 230 VAC

•

Short-circuit protection

•

Thermal shutdown

Application

•

Auxiliary SMPS for home appliances, consumer, industrial, lighting.

Description

The VIPER222 device is a high performance high voltage converter that combines a

730 V rugged power MOSFET with a PWM control. The device embeds the high

voltage startup and the current sense circuit, avoiding the use of extra components in

the BoM. Frequency jittering spreads the EMI and allows the use of a small filter. The

burst mode technique allows to obtain a very low input power consumption at light

load.

Figure 1. Block diagram

DRAIN

Rsense

Istart-up

+

-

E/A

Vcc

SOFT

START

GND

OCP

BLOCK

PWM

LOGIC

PROTECTIONS

1.2V

S

R

Q

DIS

EA-IN

OSCILLATOR

EA-OUT

Product status link

VIPER222

Product label

High voltage converter

VIPER222

Datasheet

DS13192 - Rev 2 - January 2020

For further information contact your local STMicroelectronics sales office.

www.st.com