Class 3 - Mulitple Output, High Efficiency Driven Flyback Converter for PoE Applications PMP8408 (ACTIVE)

Description & Features

Technical Documents

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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.

See the Important Notice and Disclaimer covering reference designs and other TI resources.


  



Schematic/Block Diagram

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Test Data

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Design Files

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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 ch NexFET MOSFET™, single SON5x6, 5.9mOhm  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
TL431  Adjustable precision shunt regulator  Voltage references  Sample & Buy Not Available
TPS23785B  High-Power, High-Efficiency PoE PD and DC-to-DC Controller  Power over Ethernet (PoE)  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD18533Q5A VSONP (DQJ)| 8 Download
TL431 Download Download
Download Download
Download -
Download Download
Download Download
Download Download
Download Download
Download -
Download Download
TPS23785B Download

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Technical Documents

See the Important Notice and Disclaimer covering reference designs and other TI resources.

User guides (1)
Title Type Size (KB) Date
PDF 1863 18 Jan 2013
Design files (5)
Title Type Size (KB) Date
ZIP 314 13 May 2014
PDF 140 18 Jan 2013
PDF 55 18 Jan 2013
PDF 108 18 Jan 2013
PDF 102 18 Jan 2013

Support & training

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