Maxim MAX34441 PMBus五路电源管理方案

Maxim 公司的MAX34441是 PMBus五路电源管理器和智能风扇控制器，电源管理器能监视电源输出电压，用户编程的过压和欠压阈值。MAX34441具有PMBus兼容的命令接口，I2C/SMBus兼容的串行接口，不需要外接时钟，3.3V电源，主要用在网络交换/路由器，基站，服务器，智能电网系统和工业控制。本文介绍了MAX34441主要特性，方框图以及多个器件连接方框图和典型应用电路。

PMBus 5-Channel Power-Supply Manager and Intelligent Fan Controller

The MAX34441 is a complex system monitor that can man­age up to five power supplies and a fan. The power-supply manager monitors the power-supply output voltage and constantly checks for user-programmable overvoltage and undervoltage thresholds. It can also margin the power-supply output voltage up or down to a user-programma­ble level. The margining is performed in a closed-loop arrangement whereby the device automatically adjusts a pulse-width-modulated (PWM) output and then mea­sures the resultant output voltage. The power-supply manager can also sequence the supplies in any order at both power-up and power-down. With the addition of an external current-sense amplifier, the device can also monitor currents.
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