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reference designTPS23731 | Demoboard PMP22806

Texas Instruments TPS23731 | Demoboard PMP22806

Class 4 PoE PD isolated-flyback converter (12 V, 2.1 A) primary side regulation reference design

Overview

TopologyLAN / POE
Input voltage52.5-57 V
Output 112 V / 2.1 A

Description

This reference design implements a Power over Ethernet (PoE) Power Device (PD) flyback converter with 12-V and 2.1-A output. TPS23731 PD and PWM controller provides all necessary functions to implement the PoE PD control and PWM control for the flyback converter. TPS23731 uses primary side regulation (PSR) that eliminates the need for optocoupler feedback.

Features

  • Combined PD and PWM controller
  • Primary side regulation (no optocoupler)
  • Optional 48-V adapter input
  • Frequency dithering for improved EMI

Typical applications

  • Redundant Power Feeds or Power Sharing
  • Barcode reader, WLAN, Wi-Fi® access point, IP network camera
  • IP network camera

More information

Products

Order Code Data­sheet Downloads Status Product series Samples
742792641–
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744272251–
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744042003–
 – Active i| Production is active. Expected lifetime: >10 years.WE-TPC SMT Tiny Power Inductor
744302015–
 – Active i| Production is active. Expected lifetime: >10 years.WE-HCM SMT High Current Flat Wire Inductor
885012206071–
 – Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 25 V(DC)
885012206076–
 – Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 25 V(DC)
885012206083–
 – Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC)
885012206087–
 – Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC)
885012209028–
 – Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 25 V(DC)
Order Code Data­sheet
742792641–
744272251–
744042003–
744302015–
885012206071–
885012206076–
885012206083–
885012206087–
885012209028–
Samples
Order Code Data­sheet Downloads Status Product series Samples
Online Evaluations