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[原创] TI TPS2372IEEE802.3btPoE连接LED照明参考设计TIDA-01463

关键词:电源管理 PoE PD EEE802.3at IEEE802.3bt (draft) TPS2372

时间:2018-10-30 10:20:38       作者:TI       来源:中电网

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.

The TPS2372 also implements a delay function toallow the remote PSE to complete its inrush phasebefore releasing the Power Good (PG) output. Thisensures that the IEEE802.3bt (draft) startuprequirements are met.

The Autoclass enable input also allows advancedsystem power optimization modes compliant withIEEE802.3bt (draft) standard.

TPS2372主要特性:

• IEEE 802.3bt (Draft) PD Solution for Type 3 orType 4 PoE
• Supports Power Levels for Type-4 ( TPS2372-4)90-W and Type-3 ( TPS2372-3) 60-W Operation
• Robust 100 V Hotswap MOSFET
– TPS2372-4 (typ.): 0.1-Ω, 2.2-A Current Limit
– TPS2372-3 (typ.): 0.3-Ω, 1.85-A Current Limit
• Allocated Power Indicator Outputs
• PG Output with Inrush Completion Delay
– Compliant to PSE Inrush
• Automatic Maintain Power Signature (MPS)
– Auto-adjust MPS for Type 1-2 or 3-4 PSE
– Supports Ultra-Low Power Standby Modes
• Supports Autoclass Operation
• Supports PoE++ PSE
• -40℃ to 125℃ Junction Temperature Range
• 20-lead VQFN Package

TPS2372应用:

• IEEE 802.3bt (Draft) Compliant Devices
• Lighting
• Power Modules
• Dual Signature PD/Forced UPOE
• 4PPOE
• Pass-through System
• Security Cameras
• Multiband access points
• Pico-base Stations

图1.TPS2372框图

图2.TPS2372简化电路图

图3.TPS2372典型应用电路图

IEEE802.3btPoE连接LED照明参考设计TIDA-01463

This Power over Ethernet (PoE) reference designsupplies power and data over a single Ethernet cableto a connected LED lighting ballast. This referencedesign uses TI ’s TPS2372-4 PoE powered device (PD)interface, LM3409 buck controller, LM5165 buckconverter, TPS62740 buck converter,TM4C1292NCPDT microcontroller (MCU),TPD4E05U06-Q1 ESD protection device, andDP83822I Ethernet PHY to provide power to the LEDlight remotely controlling the brightness and dimmingparameters of the LED light while connected to thenetwork.

参考设计TIDA-01463主要特性:

• IEEE802.3bt Compliant PD
• 51W Class 6 Power Level
• IP-Addressable Board for Network ConnectedControl
• Minimal Standby Power Consumption of 181 mWWith EEE (IEEE802.3az) Support
• Automatic Maintain Power Signature
• High Power Allows for Wide Range of LightingApplications
• Small Board Size Fits Into Typical LED BallastEnclosure

参考设计TIDA-01463主要应用:

• PoE Lighting
• Four Pair Non-Isolated PoE

图4.参考设计TIDA-01463外形图

图5.参考设计TIDA-01463框图
参考设计TIDA-01463主要指标:


图6.参考设计TIDA-01463电路图(1)

图7.参考设计TIDA-01463电路图(2)

图8.参考设计TIDA-01463电路图(3)

图9.参考设计TIDA-01463电路图(4)
参考设计TIDA-01463材料清单:


图10.参考设计TIDA-01463 PCB设计图(1)

图11.参考设计TIDA-01463 PCB设计图(2)

图12.参考设计TIDA-01463 PCB设计图(3)

图13.参考设计TIDA-01463 PCB设计图(4)

图14.参考设计TIDA-01463 PCB设计图(5)

图15.参考设计TIDA-01463 PCB设计图(6)

图16.参考设计TIDA-01463 PCB设计图(7)

图17.参考设计TIDA-01463 PCB设计图(8)

图18.参考设计TIDA-01463 PCB装配图(顶层)

图19.参考设计TIDA-01463 PCB装配图(底层)
详情请见:
http://www.ti.com/lit/ds/sluscm4a/sluscm4a.pdf
http://www.ti.com/lit/ug/tidudg2/tidudg2.pdf
以及http://www.ti.com/lit/df/tidrta2/tidrta2.pdf
http://www.ti.com/lit/df/tidrta3/tidrta3.pdf
http://www.ti.com/lit/df/tidrta5/tidrta5.pdf
sluscm4a.pdf
tidudg2.pdf
tidrta2.pdf
tidrta3.pdf
tidrta4.pdf
tidrta5.pdf

 

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