STCH02中文资料超低备用电源的离线准谐振PWM控制器数据手册ST规格书

描述 Description

The STCH02 is a PWM quasi resonant controller specifically designed for ultra-low standby power supplies.

The built-in HV start-up cell with zero power consumption, the fully integrated blocks for primary side constant current output regulation and the advanced power management make this IC the best choice to build a high efficiency and ultra-low standby consumption power supply, with high overall and excellent dynamic performances.

特性 Features

• Advanced power management for ultra-low standby power consumptions (under 10 mW at 230 Vac)
• Fully integrated primary side constant current output regulation (CC)
• 650 V embedded HV start-up circuit with zero power consumption.
• Quasi resonant (QR) zero voltage switching (ZVS) operation
• Automatic self-supply
• Accurate and adjustable output OVP with autorestart after fault
• Input voltage feedforward compensation for mains-independent CC regulation
• Intelligent frequency jitter for EMI suppression
• SO-8 package

简介

STCH02属于集成电路（IC）的ACDC转换器离线开关。由ST制造生产的STCH02AC 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。