VIPER22AS-E中文资料低功耗离线SMPS主切换器数据手册ST规格书

描述 Description

The VIPer22A-E combines a dedicated current mode PWM controller with a high voltage power MOSFET on the same silicon chip.

Typical applications cover off line power supplies for battery charger adapters, standby power supplies for TV or monitors, auxiliary supplies for motor control, etc. The internal control circuit offers the following benefits:

Large input voltage range on the VDDpin accommodates changes in auxiliary supply voltage. This feature is well adapted to battery charger adapter configurations.

Automatic burst mode in low load condition.

Overvoltage protection in HICCUP mode.

特性 Features

• Fixed 60 kHz switching frequency
• 9 V to 38 V wide range VDDvoltage
• Current mode control
• Auxiliary undervoltage lockout with hysteresis
• High voltage start-up current source
• Overtemperature, overcurrent and overvoltage protection with auto-restart

简介

VIPER22AS-E属于集成电路（IC）的ACDC转换器离线开关。由制造生产的VIPER22AS-EAC DC 转换器，离线开关该系列是元器件级控制产品，用于构建将交流市电转换为直流电（通常电压大幅降低）的设备。集成和未集成系统主要开关元件的器件均包括在内。由于高输入输出电压比，以及此类系统中通常需要隔离，这些器件通常与外部变压器配合使用。尽管通常使用定制变压器来实现此用途，但也有许多专门用于此用途的库存产品，请参见“开关转换器，SMPS 变压器”标题。