SW3424电源电压监控保护电路的设计与应用

The Design of a Supply Voltage Monitor and Protection Circuit and Its Applications

本文介绍并分析了一种电源电压监控保护电路的工作原理及应用。该保护电路采用了双通道输入／双通运输出。输入比较器有较宽的共模电压范围，有可编程磁滞输入和可编程输入／输出延时。输出采用了大电流驱动输出和显示输出。本文给出了其主要性能指标、典型应用连接图及需注意的问题。该电路可广泛用于航空、航天、雷达、通信及精密仪器等领域。

A supply voltage monitor and protection circuit is presented,and its theory of operation is ana- lyzed. A dual channel input/output is adopted for the circuit.The input comparator in the circuit features a fairly wide range of common-mode voltage, and provides programmable hysteresis input and programmable input/output delay. It uses large current drive output and display output.Specifications for the circuit is giv- en,Wiring diagrams for typical applications are provided.