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reference designTPS23730 | Demoboard PMP23253

Texas Instruments TPS23730 | Demoboard PMP23253

Class 6, PoE, PD, 15-V 3.3-A active-clamp forward converter reference design

Overview

TopologyLAN / POE
Input voltage37-57 V
Output 115 V / 3.3 A
IC revisionA

Description

This reference design implements a Power over Ethernet (PoE) power device (PD) active-clamp forward converter with 15-V and 3.3-A output. A TPS23730 PD with integrated Pulse Width Modulator (PWM) controller provides 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

  • IEEE802.3bt Type 3 compliant PoE PD
  • Integrated PWM controller for flyback or active-clamp forward configuration
  • Frequency dithering for EMI reduction
  • Soft-start control with advanced startup and hiccup mode overload protection
  • Soft-stop shutdown
  • Optional adapter input

Typical applications

  • Redundant Power Feeds or Power Sharing
  • Video and VoIP Telephones, Access Points, Security Cameras, Pass-through System

More information

Parts approved by Texas Instruments

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Order Code
Data­sheet
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Status
Product series
λDom typ.(nm)
Emitting Color
λPeak typ.(nm)
IV typ.(mcd)
VF typ.(V)
Chip Technology
2θ50% typ.(°)
C
Tol. C
Size
Q
RISO
Ceramic Type
L(mm)
W(mm)
H(mm)
Fl(mm)
Packaging
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
Qty.
IR(mA)
ISAT(A)
LR(µH)
Pins
Color
Gender
Z @ 100 MHz(Ω)
Zmax(Ω)
Test Condition Zmax
IR 2(mA)
RDC max.(Ω)
Type
Winding Style
Number of windings
L1(µH)
IR(mA)
RDC max.(Ω)
VR(V)
Data rate
Ports
PoE
Improved CMRR
Operating Temperature
VT(V (AC))
Mount
L(µH)
LSmin.(nH)
SamplesAvailability & Sample
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150060YS75000
SPECWL-SMCW SMT Mono-color Chip LED Waterclear, 590 nm, Yellow
Simu­lation
Availability
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Downloads27 files

RAY files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear
Dominant Wavelength [typ.]590 nm
Emitting ColorYellow 
Peak Wavelength [typ.]595 nm
Luminous Intensity [typ.]120 mcd
Forward Voltage [typ.]2 V
Chip TechnologyAlInGaP 
Viewing Angle Phi 0° [typ.]140 °
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Size0603 
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Length1.6 mm
Width0.8 mm
Height0.7 mm
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PackagingTape and Reel 
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Packaging Unit4000 
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Operating Temperature -40 °C up to +85 °C
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MountSMT 
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742792641
SPECWE-CBF SMT EMI Suppression Ferrite Bead, –, –
Simu­lation
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Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-CBF SMT EMI Suppression Ferrite Bead
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Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.3 mm
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Packaging Unit4000 
Rated Current1500 mA
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Impedance @ 100 MHz300 Ω
Maximum Impedance450 Ω
Maximum Impedance250 MHz 
Rated Current 22000 mA
DC Resistance0.15 Ω
TypeHigh Current 
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Number of windings1 
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Rated Current2000 mA
DC Resistance [1]0.15 Ω
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Operating Temperature -55 °C up to +125 °C
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MountSMT 
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744272251
SPECWE-SL5 SMT Common Mode Line Filter, –, –
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Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-SL5 SMT Common Mode Line Filter
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Length10 mm
Width8.7 mm
Height6.5 mm
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Packaging Unit800 
Rated Current2800 mA
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Pins4 
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Impedance @ 100 MHz800 Ω
Maximum Impedance1200 Ω
Maximum Impedance20 MHz 
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DC Resistance0.035 Ω
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Winding Stylesectional 
Number of windings2 
Inductance [1]250 µH
Rated Current2000 mA
DC Resistance [1]0.035 Ω
Rated Voltage80 V
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Operating Temperature -40 °C up to +125 °C
Insulation Test Voltage1000 V (AC)
MountSMT 
Inductance250 µH
Leakage Inductance [min.]1500 nH
–Check availability
744325550
SPECWE-HCI SMT Flat Wire High Current Inductor, –, –
Simu­lation
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Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
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Size1050 
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Length10.5 mm
Width10.2 mm
Height4.7 mm
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Performance Rated Current12 A
Saturation Current @ 10%4.5 A
Saturation Current @ 30%12 A
DC Resistance10.3 mΩ
Self Resonant Frequency30 MHz
MaterialSuperflux 
Packaging Unit700 
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Rated Inductance4.3 µH
Pins2 
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DC Resistance0.01133 Ω
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Number of windings9.5 
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Operating Temperature -40 °C up to +150 °C
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MountSMT 
Inductance5.5 µH
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74435573300
SPECWE-HCI SMT Flat Wire High Current Inductor, –, –
Simu­lation
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Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
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Size1890 
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Length18.3 mm
Width18.2 mm
Height8.9 mm
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Performance Rated Current8.7 A
Saturation Current @ 10%8 A
Saturation Current @ 30%9 A
DC Resistance21.7 mΩ
Self Resonant Frequency9.5 MHz
MaterialMnZn 
Packaging Unit150 
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Rated Inductance26 µH
Pins2 
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DC Resistance23.44 Ω
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Number of windings20.5 
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Operating Temperature -40 °C up to +125 °C
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MountSMT 
Inductance33 µH
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768775322
SPECWE-PD2 HV SMT Power Inductor (High Voltage), –, –
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Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-PD2 HV SMT Power Inductor (High Voltage)
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Size7850 
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Length7 mm
Width7.8 mm
Height5 mm
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Self Resonant Frequency1.6 MHz
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Packaging Unit500 
Rated Current150 mA
Saturation Current0.2 A
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DC Resistance7.2 Ω
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Operating Temperature -40 °C up to +125 °C
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MountSMT 
Inductance2200 µH
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–Check availability
885012006060
SPECWCAP-CSGP MLCCs 50 V(DC), –, –
Simu­lation
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Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 50 V(DC)
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Capacitance330 pF
Capacitance±5% 
Size0603 
Q-Factor1000 
Insulation Resistance10 GΩ
Ceramic TypeNP0 Class I 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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Packaging Unit4000 
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Rated Voltage50 V
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Operating Temperature -55 °C up to +125 °C
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60900213421
SPECWR-PHD Jumper, –, –
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Downloads3 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Jumper
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Insulation Resistance1000 MΩ
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Length2.44 mm
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PackagingBag 
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Rated Current3000 mA
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Pins1 
ColorBlack 
GenderJumper 
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Operating Temperature -40 °C up to +125 °C
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7490220122
SPECWE-LAN LAN Transformer, –, –
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-LAN LAN Transformer
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Length17.55 mm
Width16 mm
Height98.8 mm
Pad Dimension13.97 mm
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Packaging Unit290 
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Pins24 
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Type4PPoE (to 900 mA) 
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Inductance [1]350 µH
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Data rate10/100/1000BASE-T 
Ports1 
PoE4PPoE (up to 1000 mA) 
Improved Common Mode RejectionNo 
Operating Temperature -40 °C up to +105 °C
Insulation Test Voltage1500 V (AC)
MountSMT 
Inductance350 µH
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750320145
SPECForward Transformer, –, –
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ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product series Forward Transformer
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