VIPER37 - STMicroelectronics

VIPER37 fixed frequency offline converter

This device is an offline converter with an 800 V rugged power section, a PWM control, two levels of overcurrent protection, overvoltage and overload protection, hysteretic thermal protection, soft-start, and safe auto-restart after the removal .

Features

■ 800 V avalanche rugged power section
■ PWM operation with adjustable limiting current
■ 30 mW standby power at 265 Vac
■ Operating frequency:
  – 60 kHz for L type
  – 115 kHz for H type
■ Frequency jittering for low EMC
■ Output overvoltage protection
■ High primary current protection (2nd OCP)
■ Input undervoltage setting (brownout)
■ Onboard soft-start
■ Safe auto-restart after a fault condition
■ Hysteretic thermal shutdown Applications
■ SMPS for set-top boxes, DVD players and recorders, white goods
■ Auxiliary power supply for consumer and home equipment
■ ATX auxiliary power supply
■ Low .