VIPER50A-E中文资料Fixed frequency off line converter数据手册ST规格书

描述 Description

VIPer50A-E/ASP-E, made using VIPower M0 Technology, combines on the same silicon chip a state-of-the-art PWM circuit together with an optimized, high voltage, Vertical Power MOSFET (700V/ 1.5A).

Typical applications cover offline power supplies with a secondary power capability of 25W in wide range condition and 50W in single range or with doubler configuration. It is compatible from both primary or secondary regulation loop despite using around 50% less components when compared with a discrete solution. Burst mode operation is an additional feature of this device, offering the ability to operate in stand-by mode without extra components.

特性 Features

• ADJUSTABLE CURRENT LIMITATION
• LOW STAND-BY CURRENT
• INTEGRATED START-UP SUPPLY
• UNDERVOLTAGE LOCK-OUT WITH HYSTERESIS
• ADJUSTABLE SWITCHING FREQUENCY UP TO 200 kHz
• SOFT START AND SHUTDOWN CONTROL
• CURRENT MODE CONTROL
• INTERNALLY TRIMMED ZENER REFERENCE
• OVER-TEMPERATURE PROTECTION
• AUTOMATIC BURST MODE OPERATION IN STAND-BY CONDITION ABLE TO MEET “BLUE ANGEL” NORM (<1w TOTAL POWER CONSUMPTION)

简介

VIPER50A-E属于集成电路（IC）的ACDC转换器离线开关。由ST制造生产的VIPER50A-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。