IC manufacturers Texas Instruments

IC manufacturers (104)

Texas Instruments TPS23734 | Demoboard PMP23278

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

Overview

TopologyLAN / POE
Input voltage37-57 V
Output 112 V / 2.1 A

Description

This reference design implements a Power over Ethernet (PoE) power device (PD) active clamp forward converter with 12-V and 2.1-A output. A TPS23734 PD, pulse width modulator (PWM) controller provides all the necessary functions to implement the PoE PD control and the PWM control for the active clamp forward converter. This design uses secondary side regulation (SSR) with an optocoupler feedback.

Features

  • Combined PD and PWM controller
  • Secondary side regulation using optocoupler
  • Optional 48-V adapter input
  • Frequency dithering for improved electromagnetic interference (EMI)

Typical applications

  • Redundant Power Feeds or Power Sharing
  • Security Cameras, Access Points, Video and VoIP Telephones

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
CTol. CSizeQ
(%)
RISOCeramic TypeL
(mm)
W
(mm)
H
(mm)
Fl
(mm)
PackagingIR
(mA)
ISAT
(A)
fres
(MHz)
Pins
(pcs)
ColorGenderZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(Ω)
TypeWinding StyleNumber of windingsL1
(µH)
IR
(mA)
RDC max.
(Ω)
VR
(V)
Data ratePortsPoEImproved CMRROperating TemperatureVT
(V (AC))
MountL
(µH)
LSmin.
(nH)
Samples
150060YS75000SPEC
26 files Active i| Production is active. Expected lifetime: >10 years.WL-SMCW SMT Mono-color Chip LED Waterclear 590 Yellow 595 120 2 AlInGaP 140 0603 1.6 0.8 0.7 Tape and Reel -40 °C up to +85 °C SMT
742792641SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WE-CBF SMT EMI Suppression Ferrite Bead 0603 1.6 0.8 0.8 0.3 1500 300 450 250 MHz 2000 0.15 High Current 1 2000 0.15 -55 °C up to +125 °C SMT
744272251SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

9 files Active i| Production is active. Expected lifetime: >10 years.WE-SL5 SMT Common Mode Line Filter 10 8.7 6.5 2000 4 970 0.035 sectional 2 250 2000 0.035 80 1000 SMT 250 1500
768775322SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WE-PD2 HV SMT Power Inductor (High Voltage) 7850 7 7.8 5 150 0.2 1.6 7.2 -40 °C up to +125 °C SMT 2200
885012006060SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC)330 pF ±5% 0603 100010 GΩ NP0 Class I 1.6 0.8 0.8 0.4 7" Tape & Reel 50 -55 °C up to +125 °C
60900213421SPEC
3 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD Jumper1000 MΩ 2.44 Bag 3000 1 Black Jumper -40 °C up to +125 °C
7490220122SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WE-LAN LAN Transformer 17.55 16 98.8 13.97 24 4PPoE (to 900 mA) 350 10/100/1000BASE-T 1 4PPoE (up to 1000 mA) No -40 °C up to +105 °C 1500 SMT 350
Order Code Data­sheet Simu­lation
150060YS75000SPEC
742792641SPEC
744272251SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

768775322SPEC
885012006060SPEC
60900213421SPEC
7490220122SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
CTol. CSizeQ
(%)
RISOCeramic TypeL
(mm)
W
(mm)
H
(mm)
Fl
(mm)
PackagingIR
(mA)
ISAT
(A)
fres
(MHz)
Pins
(pcs)
ColorGenderZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(Ω)
TypeWinding StyleNumber of windingsL1
(µH)
IR
(mA)
RDC max.
(Ω)
VR
(V)
Data ratePortsPoEImproved CMRROperating TemperatureVT
(V (AC))
MountL
(µH)
LSmin.
(nH)
Samples