概述本应用笔记讨论了以太网供电 (PoE) 中跨或端点插入参考设计的功能。参考设计的模块化硬件允许灵活实现 4 至 192 个以太网端口。该设计基于四路网络电源控制器 MAX5945。MAXQ2000 微控制器提供系统级控制，并控制和监控 MAX5945 电源控制器。参考设计还可以在独立模式下使用，由 PC 通过 RS-232 或 USB 接口进行配置。

Overview

This application note discusses the features of a reference design for Power-over-Ethernet (PoE) midspan or endpoint insertion. The reference design's modular hardware allows flexible implementation of 4 to 192 Ethernet ports. The design is based on the MAX5945, a quad network power controller. A MAXQ2000 microcontroller provides system-level control, and controls and monitors the MAX5945 power controllers. The reference design can also be used in stand-alone mode, where it is configured by a PC over an RS-232 or USB interface.