The CS51021A/2A/3A/4A Fixed Frequency PWM Current Mode Controller family provides all necessary features required for AC−DC or DC−DC primary side control. Several features are included eliminating the additional components needed to implement them externally. In addition to low startup current (75 A) and high frequency operation capability, the CS51021A/2A/3A/4A family includes overvoltage and undervoltage monitoring, externally programmable dual threshold overcurrent protection, current sense leading edge blanking, current slope compensation, accurate duty cycle control and an externally available 5.0 V reference.

Features

• 75 A Max. Startup Current

• Fixed Frequency Current Mode Control

• 1.0 MHz Switching Frequency

• Undervoltage Protection Monitor

• Overvoltage Protection Monitor with Programmable Hysteresis

• Programmable Dual Threshold Overcurrent Protection with Delayed Restart

• Programmable Soft Start

• Accurate Maximum Duty Cycle Limit

• Programmable Slope Compensation

• Leading Edge Current Sense Blanking

• 1.0 A Sink/Source Gate Drive

• Bidirectional Synchronization (CS51021A/3A)

• 50 ns PWM Propagation Delay

• 100 A Max Sleep Current (CS51022A/4A)

• Pb−Free Packages are Available*

CS51023AEDR16属于集成电路（IC） > AC DC 转换器，离线开关。安森美半导体公司制造生产的CS51023AEDR16AC 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。