Class 3 - Mulitple Output, High Efficiency Driven Flyback Converter for PoE Applications

(ACTIVE) PMP8408

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 converter is used for Class 3 PoE applications where high efficiency and multiple outputs are required. The flyback converter with synchronous rectifier provides excellent efficiency and small size for PoE applications such as IP Phones. The TPS23785B contains both the PoE Powered Device and the PWM controller functions.

Features
  • High efficiency (90%)
  • Multiple outputs for 10V/0.2A, 5V/1A, 3.3V/1.5A
  • Isolated Flyback with synchornous rectifier
  • Small size solution
  • Uses TPS23785 with PoE interface PD and PWM controller
  • This circuit design is full-functional tested and recommended for new designs.

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


  




Parametrics
 PMP8408.1
(Output Voltage 1)
PMP8408.2
(Output Voltage 2)
PMP8408.3
(Output Voltage 3)
Vin (Min) (V)363636
Vin (Max) (V)575757
Vout (Nom) (V)3.3510
Iout (Max) (A)1.51.2
Output Power (W)4.9552
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
CSD18533Q5A  60V N-Channel NexFET Power MOSFET  Power MOSFET  Sample & Buy View Design Kits & Evaluation Modules
TL431A  Adjustable Precision Shunt Regulator  Voltage Reference  Sample & Buy Not Available
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 1863 18 Jan 2013 62
Design files (5)
Title Abstract Type Size (KB) Date Views
ZIP 314 13 May 2014 133
PDF 140 18 Jan 2013 14
PDF 55 18 Jan 2013 48
PDF 108 18 Jan 2013 110
PDF 102 18 Jan 2013 229


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