TI TPS2372IEEE802．3btPoE连接LED照明参考设计TIDA－01463
TI公司的TPS2372包括了实现IEEE802.3at或IEEE802.3bt (draft)(Type 1-4)供电设备(PD)的所有特性,低内部开关电阻支持大功率应用高达90W(TPS2372-4)或60W(TPS2372-3),如果采用100米的CAT5电缆,这将会在PD输入时转换成71.3W和51W.工作温度-40℃到125℃,主要用在IEEE 802.3bt(Draft)兼容设备,照明,功率模块,双标识PD/强制型UPOE,4PPOE,通过系统,安全照相机,多波段接入点以及微微基站.本文介绍了TPS2372主要特性,框图,应用电路图,以及IEEE802.3btPoE连接LED照明参考设计TIDA-01463主要系统指标,框图,电路图,材料清单和PCB设计图与元件装配图.
The TPS2372 contains all of the features needed toimplement an IEEE802.3at or IEEE802.3bt (draft)(Type 1-4) powered device (PD). The low internalswitch resistance allows the TPS2372-4 andTPS2372-3 to support high power applications up to90 W and 60 W respectively. Assuming 100-meterCAT5 cable, this translates into 71.3 W and 51 W atPD input.The TPS2372 operates with enhanced features.
The Automatic MPS function enables applicationsrequiring very low power standby modes. TheTPS2372 automatically generates the necessarypulsed current to maintain the PSE power. Anexternal resistor is used to enable this functionalityand to program the MPS pulsed current amplitude.
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