[原创]Linear LT4275 90W以太网受电控制方案

Linear 公司的LT4275是引脚兼容的IEEE 802.3和LTPoE++受电设备(PD)控制器,在PD RJ45连接器上提供38.7W,52.7W,70W或90W的功率,支持LTPoE++ 38.7W, 52.7W, 70W和90W,EEE 802.3at 25.5W,EEE 802.3af 高达13W标准,最大输入电压100V,主要用在大功率无线数据系统,户外安全照相系统,商业和公共信息显示屏,高温工业应用.本文介绍了LT4275A主要特性,框图,多种受电电路图,以及演示板DC1788A电路图和材料清单.

The LT275 is a pin-for-pin compatible family of IEEE 802.3 and LTPoE++ powered device (PD) controllers.

The LT4275A employs a proprietary LTPoE++ classification scheme, delivering 38.7W, 52.7W, 70W or 90W of power at the PD RJ45 connector. The LT4275A is fully compatible with IEEE 802.3. The LT4275B is an IEEE 802.3at compliant, Type 2 (PoE+) PD delivering up to 25.5W. The LT4275C is an IEEE 802.3af compliant, Type 1 (PoE) PD delivering up to 13W.
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