VIPER28主要特性:

    ■ 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 over-voltage protection

    ■ On-board soft-start

    ■ Safe auto-restart after a fault condition

    ■ Hysteretic thermal shutdown
   
    ■ Delayed overload protection

    VIPER28應(yīng)用:

    ■ 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

圖1.VIPER28典型拓撲圖

圖2.VIPER28方框圖

圖3.VIPER28簡單特性反激應(yīng)用框圖

圖4. VIPER28滿特性反激應(yīng)用框圖