Class 2 Mulitple Output, High Efficiency Flyback Converter for PoE Applications

(ACTIVE) PMP8407

Description & Features

Technical Documents

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View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


Description

This reference evaluation module, featuring the TPS23785B PoE interface and DC-toDC contoller, is used for class 2 PoE applications where high effliency and multiple outputs are required.

The flyback converter with synchronous reftifier provides excellent efficiency and small size for PoE applications such as IP phones. The TPS23785B contains both the PoE powered device and the PWM contoller.

Features
  • Efficiency achieved >90%
  • 1.5% peak to peak cross regulation on 5V
  • Isolated multiple output (3.3V at 0.88A; 5V at 0.35A; 10V at 0.11A)
  • Uses TPS23785B high-power, high-efficiency PoE PD and DC-to-DC controller
  • Small board size
  • This circuit design is fully functional and tested and recommended for new design.

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  




Parametrics
 PMP8407.1
(Output Voltage 1)
PMP8407.2
(Output Voltage 2)
PMP8407.3
(Output Voltage 3)
Vin (Min) (V)363636
Vin (Max) (V)575757
Vout (Nom) (V)3.3510
Iout (Max) (A).88.35.11
Output Power (W)2.9041.751.1
Isolated/Non-IsolatedIsolatedIsolatedIsolated
Input TypeDCDCDC
TopologyFlyback- Synchronous
POE
Flyback- Synchronous
POE
Flyback- Synchronous
POE

TI Devices (3)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD17527Q5A  30V, N-Channel NexFET™ Power MOSFETs  Power MOSFET  Sample & Buy View Design Kits & Evaluation Modules
TLV431A  Low Voltage Adjustable Precision Shunt Regulator  Voltage Reference  Sample & Buy View Design Kits & Evaluation Modules
TPS23785B  High-Power, High-Efficiency PoE PD and DC-to-DC Controller  Power Over Ethernet (PoE)/LAN Solutions  Sample & Buy Not Available

Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views
PDF 648 16 Sep 2013 17
Design files (4)
Title Abstract Type Size (KB) Date Views
ZIP 313 16 Sep 2013 33
PDF 225 16 Sep 2013 96
PDF 121 16 Sep 2013 28
PDF 61 16 Sep 2013 331


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