深圳市中立信电子科技有限公司

VIPER27LN

交流/直流转换器 Hi-volt converter w/ 800V rugged off-line Off-line high voltage converters

Description VIPER27LN

The device is an off-line converter with an 800 V

rugged power section, a PWM control, two levels

of over-current protection, overvoltage 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 VIPER27LN

■ 800 V avalanche rugged power section

■ PWM operation with frequency jittering for low EMI

■ Operating frequency:

– 60 kHz for L type

– 115 kHz for H type

■ Standby power < 50 mW at 265 Vac

■ Limiting current with adjustable set point

■ Adjustable and accurate overvoltage protection

■ On-board soft-start

■ Safe auto-restart after a fault condition

■ Hysteretic thermal shutdown

Application VIPER27LN

■ Auxiliary power supply for consumer and home

equipments

■ ATX auxiliary power supply

■ Low / medium power AC-DC adapters

■ SMPS for set-top boxes, DVD players and

recorders, white goods