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reference designUCC2897A | Demoboard PMP7294

Texas Instruments UCC2897A | Demoboard PMP7294

18Vdc-36Vdc Input, 28V/100W Active Clamp Forward (ACTIVE) PMP7294

Overview

TopologyForward Converter
Input voltage18-36 V
Output 128 V / 3.6 A
IC revisionB

Description

This reference design uses the UCC2897A active clamp controller to generate an isolated 28V/3.6A output from a standard 24Vdc telecom input. This design uses diode rectification on the output stage and achieves efficiencies up to 93%. The output is adjustable down to 24V by changing a single resistor value.

Features

  • 18-36V Input, 28V/3.6A Output
  • Standard 24Vdc telecom input range
  • Efficiency up to 93%
  • Diode Rectification
  • Adjustable Output as low as 24V
  • Active Clamp Forward Topology, featuring UCC2897A Controller

More information

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Product series
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC max.(mΩ)
Material
LR(µH)
fres(MHz)
Wire Type
L(µH)
n
IR(A)
∫Udt(µVs)
VT(V (AC))
RDC 1(mΩ)
RDC 2(Ω)
SamplesAvailability & Sample
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7443321000
SPECWE-HCC SMT High Current Cube Inductor, 9.6 A, 9.1 A
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Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCC SMT High Current Cube Inductor
Performance Rated Current9.6 A
Saturation Current @ 10%9.1 A
Saturation Current @ 30%11.3 A
DC Resistance16.7 mΩ
MaterialFerrite 
Rated Inductance7.5 µH
Self Resonant Frequency29 MHz
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Inductance10 µH
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Rated Current9 A
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7443634700
SPECWE-HCF SMT High Current Inductor, 12.8 A, 7.5 A
Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCF SMT High Current Inductor
Performance Rated Current12.8 A
Saturation Current @ 10%7.5 A
Saturation Current @ 30%8.5 A
DC Resistance13.42 mΩ
MaterialMnZn 
Rated Inductance12.45 µH
Self Resonant Frequency10 MHz
Wire TypeFlat 
Inductance47 µH
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Rated Current12 A
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749251100
SPECWE-CST Current Sense Transformer, –, –
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Downloads8 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-CST Current Sense Transformer
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Inductance2000 µH
Turns Ratio1:100 
Rated Current20 A
Voltage-µSecond50 µVs
Insulation Test Voltage500 V (AC)
DC Resistance 10.75 mΩ
DC Resistance 25.5 Ω
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750312917
SPECFlyback Transformer WE-FW, –, –
Simu­lation–
Availability
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Status Activei| Production is active. Expected lifetime: >10 years.
Product series Flyback Transformer WE-FW
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