VIPER37中文资料VIPerPlus系列：固定频率15W高性能离线高压转换器数据手册ST规格书

描述 Description

This device is an offline converter with an 800 V rugged power section, a PWM control, two levels of overcurrent protection, overvoltage and overload protection, hysteretic thermal protection, soft-start, and safe auto-restart after the removal of any fault condition. Burst mode operation and very low device consumption help to meet the standby energy saving regulations. Advance frequency jittering reduces EMI filter costs. Brownout function protects the switch mode power supply when the rectified input voltage level is below the normal minimum level specified for the system. The high voltage startup circuit is embedded in the device.

特性 Features

• 800 V avalanche-rugged power MOSFET allowing ultra wide range input Vacto be achieved
• PWM operation with adjustable limiting current
• 30 mW standby power at 265 Vac
• Operating frequency:
• Frequency jittering for low EMC
• Output overvoltage protection
• High primary current protection (2nd OCP)
• Input undervoltage setting (brownout)
• Onboard soft-start
• Safe auto-restart after a fault condition
• Hysteretic thermal shutdown

简介

VIPER37属于集成电路（IC）的ACDC转换器离线开关。由制造生产的VIPER37AC 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。