36V-75VDC Input, 12V/10A Active Clamp Forward, 1/8th Brick Reference Design PMP7451 (ACTIVE)

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Description

This reference design generates a 12V/10A output from a standard 48V telecom input. The UCC2897A controls an active clamp forward converter power stage. The low gate charge and low RDSon of the CSD18531Q5A, implemented as self-driven synchronous rectifiers, provide for a highly efficient design. This design is laid out in a standard 1/8th brick footprint and includes enable, remote sense, and output overvoltage features.

Features
  • 36V to 75VDC Input, 12V/10A Output (120W)
  • Active Clamp Foward Topology
  • Features UCC2897A Controller along with TI NexFET Synchronous Rectifiers
  • Industry Standard Eighth Brick Footprint
  • Output Overvoltage protection
  • Romote Sense

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Schematic/Block Diagram

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Design Files

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Parametrics
 PMP7451.1
(Output Voltage 1)
Vin (Min) (V)36
Vin (Max) (V)75
Vout (Nom) (V)12
Iout (Max) (A)10
Output Power (W)120
Isolated/Non-IsolatedIsolated
Input TypeDC
TopologyForward- Active Clamp
Forward- Synchronous

TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD18531Q5A  60V N-Channel NexFET Power MOSFETs, CSD18531Q5A  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
TL431  Adjustable precision shunt regulator  Voltage references  Sample & Buy Not Available
UCC2897A  Advanced Current-Mode Active Clamp PWM Controller  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD18531Q5A VSONP (DQJ)| 8 Download
TL431 Download Download
Download Download
Download -
Download Download
Download Download
Download Download
Download Download
Download -
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UCC2897A Download Download
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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 2653 21 May 2012
Design files (3)
Title Type Size (KB) Date
ZIP 374 19 Jun 2014
PDF 48 21 May 2012
PDF 22 21 May 2012

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