36V-75Vdc Input, 5V/50W 1/8 Brick Active Clamp Forward Reference Design

(ACTIVE) PMP9108

Description & Features

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Description

This reference design generates a 5V/10A output from a standard telecom 48V DC input. The UCC2897A controls an active clamp forward converter power stage. The low gate charge and low RDSon of the CSD17309Q3 and CSD18540Q5B, implemented as self-driven synchronous rectifiers, allow this design to achieve a max load efficiency over 93%.  This design uses only ceramic output capacitors for high reliability and uses 100% surface mount components.  The board is laid out on a standard eighth brick footprint.

Features
  • Industry standard 1/8 Brick Footprint, 0.9" x 2.3" (23mm x 58mm)
  • High efficiency (greater than 93%)
  • All ceramic output capacitors
  • Self-driven synchronous rectifiers reduce drive complexity
  • 100% surface mount components
  • Low profile - 0.35" (9mm) maximum top side component height

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Schematic/Block Diagram

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Test Data

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Design Files

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Bill of Materials (BOM)

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Parametrics
 PMP9108.1
(Output Voltage 1)
Vin (Min) (V)36
Vin (Max) (V)75
Vout (Nom) (V)5
Iout (Max) (A)10
Output Power (W)50
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
CSD17309Q3  30V N Channel NexFET™ Power MOSFET  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
CSD18540Q5B  60V, N-Channel NexFET™ Power MOSFET   MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
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)
CSD17309Q3 VSON-CLIP (DQG)| 8 Download Download
CSD18540Q5B VSON-CLIP (DNK)| 8 Download -
UCC2897A Download Download
Download -

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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views
PDF 3971 10 Sep 2014 7
Design files (5)
Title Abstract Type Size (KB) Date Views
ZIP 557 10 Sep 2014 6
PDF 1036 10 Sep 2014 2
PDF 148 10 Sep 2014 2
PDF 83 10 Sep 2014 5
PDF 135 10 Sep 2014 14
Related Tools & Software

Software (1)



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