VIPER28HN Datasheet PDF - ST Microelectronics

●Description

●The device is an off-line converter with an 800 V rugged power section, a PWM control, two levels of over-current protection, over-voltage and overload protections, hysteretic thermal protection, soft-start and safe auto-restart after any fault condition removal. Burst mode operation and device very low consumption help to meet the standby energy saving regulations.

●Features

●■ 800 V avalanche rugged power section

●■ PWM operation with adjustable limiting current

●■ 30 mW stand-by 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)

●■ Extra power timer for peak current management

●■ On-board soft-start

●■ Safe auto-restart after a fault condition

●■ Hysteretic thermal shutdown

●Application

●■ Auxiliary power supply for consumer and home equipment

●■ ATX auxiliary power supply

●■ Low / medium power AC-DC adapters

●■ SMPS for set-top boxes, DVD players and recorders, white goods