MAX5971AEVKIT

MAX5971A评估板


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说明

MAX5971A评估板(EV kit)为完全安装并经过测试的表贴电路板,具有以太网单端口供电设备(PSE),用于-54V电源系统。符合IEEE® 802.3af/at标准的MAX5971A PSE控制器IC采用28引脚TQFN封装,具有内部n沟道功率MOSFET,形成评估板的主PSE电路。IC用于需要通过单以太网端口提供直流电源的以太网供电(PoE)设备。

评估板采用-32V至-60V供电 (-54V电源摆幅),能够为评估板提供1A或更大电流,通过10/100/1000BASE-TX以太网端口为用电设备(PD)供电。评估板演示PD侦测、分级、限流控制,以及IEEE 802.3af/at规定的PSE的其它功能。

IC通过检测端口的电流控制IC的内部功率MOSFET,控制以太网端口的-54V直流电源。电流馈送至评估板以太网输出端口的1 x 1 Gb MagJack®模块。

评估板演示IC工作模式的完整功能,例如可配置大功率模式(可设置至高达40W)、PD检测、PD分级、过流保护、电流折返保护、欠压/过压保护,以及AC/DC开路监测。可在评估板上配置所有功能,提供了更多的测试点用于电压检测和电流测量。评估板亦可针对中跨和端点网络工作进行配置。

关键特性

  • IEEE 802.3af/at兼容PSE电路
  • 大功率5级模式,可配置在高达40W功率
  • -32V至-60V输入电压,提供1A电流
  • 以太网端口
    • RJ45 10/100/1000BASE-TX以太网数据输入端口
    • RJ45 10/100/1000BASE-TX以太网PSE输出端口
  • 演示IC的内部功率开关和电流检测
  • 演示标准和传统PD检测和分级
  • 可针对中跨和端点模式配置
  • 可配置AC/DC负载撤除检测和断开监测
  • 方便的电压和电流测试点
  • 演示评估板电路的输出端口LED状态指示
  • 经过验证的PCB布局
  • 完全安装并经过测试

应用

  • 工业自动控制
  • 单端口PSE端点应用
  • 单端口PSE电源(中跨系统)
  • 交换机/路由器
  • 无线LAN接入点/WiMAX™基站

技术资料

应用笔记 6220 40W Single Port MAX5971A Current Sensing

质量和环境数据

无铅封装的锡(Sn)晶须报告
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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类型 编号 PDF 标题
应用笔记 6220 40W Single Port MAX5971A Current Sensing