HF01B04数据手册集成电路（IC）的ACDC转换器离线开关规格书PDF

描述 Description

The HF01B04 is a flyback regulator with Green Mode Operation. Its high efficiency feature over the entire input/load range meets the stringent world-wide energy-saving requirements.The HF01B04 is an integrated current mode controller with a 700V FET. Its valley switching detector ensures minimum Drain-Source voltage switching every cycle, per Quasi-resonant operation. When the output power falls below a given level, the regulator enters the burst mode to lower the stand-by power consumption.An internal minimum off time limiter prevents the switching frequency from exceeding 150 kHz, which is below the CISPR-22 EMI start limit. Internal 2.4ms soft start prevents the excessive inrush current during start upThe HF01B04 provides various protections, such as Thermal Shutdown (TSD), VCC Under Voltage Lockout (UVLO), Over Load Protection (OLP), Over Voltage Protection (OVP) and so on.HF01B04 is available in PDIP8-7B and SOIC8-7B packages.

特性 Features

• Internal Integrated 700V MOSFET
• High Level of Integration, Requires Very Few External Components
• Universal Input Voltage (85~265VAC)
• Quasi-Resonant Operation over the Entire Input and Load Range
• Maximum Switching Frequency Limited
• Valley Switching for High Efficiency and Better EMI Performance
• Active Burst Mode for Low Standby Power Consumption
• Internal High-Voltage Current Source for Start-Up
• Internal Soft Start
• Internal 320ns Leading Edge Blanking
• Thermal Shutdown (Auto Restart with Hysteresis)
• VCC Under Voltage Lockout with Hysteresis (UVLO)
• Over Voltage Protection
• Over Load Protection.
• No Load Consumption at 265Vac, HF01B04<30mW

简介

HF01B04属于集成电路（IC）的ACDC转换器离线开关。由制造生产的HF01B04AC 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。