IC manufacturers Texas Instruments

IC manufacturers (103)

Texas Instruments TPS2379 | Demoboard PMP7499

Non-Standard (>25.5W) PoE - High Efficiency Forward Converter (12V@5A) Reference Design

Overview

TopologyOther Topology
IC revisionB

Description

This converter provides a high power PoE output of 12V/5A. The TPS2379 PD controller allows the use of an external hot swap FET for increased efficiency. The UCC2897A PWM controller is used to implement a high efficiency active clamp forward converter.Remark: BOM & Test-Result are added with schematic.

Features

  • High efficiency (90% with PoE supply, 93.6% with adapter supply)
  • 12V at 5A output
  • Isolated Forward with synchornous rectifier
  • Uses TPS2379 combined with UCC2897A to implement a high efficiency active forward converter
  • Allows an external hot swap FET for increased efficiency
  • This circuit design is full-functional tested and recommended for new designs

Typical applications

  • IP Camera

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
VT(V (AC))
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
IR(A)
ISAT(A)
RDC max.(mΩ)
LR(µH)
Version
VIN
VOut1(V)
IOut1(A)
Vaux(V)
n
Size
Mount
Samples
WE-HCI SMT Flat Wire High Current Inductor, 5.5 µH, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Inductance5.5 µH
Performance Rated Current12 A
Saturation Current @ 10%4.5 A
Saturation Current @ 30%12 A
DC Resistance10.3 mΩ
Self Resonant Frequency30 MHz
MaterialSuperflux 
DC Resistance11.33 mΩ
Rated Inductance4.3 µH
VersionSMT 
Size1050 
MountSMT 
WE-HCI SMT Flat Wire High Current Inductor, 15 µH, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Inductance15 µH
Performance Rated Current14.1 A
Saturation Current @ 10%10.75 A
Saturation Current @ 30%14 A
DC Resistance9 mΩ
Self Resonant Frequency14 MHz
MaterialMnZn 
DC Resistance9.72 mΩ
Rated Inductance12 µH
VersionSMT 
Size1890 
MountSMT 
WE-PoE++ Power over Ethernet Plus Plus Transformer, 100 µH, 1500 V (AC)
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Inductance100 µH
Insulation Test Voltage1500 V (AC)
VersionForward 
Input Voltage 36 - 72 V (DC)
Output Voltage 112 V
Output Current 15 A
Auxiliary Voltage12 V
Turns Ratio2:1:1 
SizeEFD20 
MountSMT 
WE-PD2 HV SMT Power Inductor (High Voltage), 2200 µH, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Inductance2200 µH
Self Resonant Frequency1.6 MHz
Rated Current0.15 A
Saturation Current0.2 A
DC Resistance7200 mΩ
Size7850 
MountSMT