18-60VDCin, 6V/31A Active Clamp Forward Reference Design PMP10395 (ACTIVE)

Description & Features

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Description

This reference design generates a 6V/31A output from a wide range 18V to 60V DC telecom input.  The UCC2897A controls an active clamp forward converter power stage.  The low gate charge and low RDSon of the CSD18540Q5B, implemented as self-driven synchronous rectifiers, allow this design to achieve a max load efficiency over 94%.  The compact UCC27511 drivers simplify the gate drive circuitry for the synchronous rectifiers.

Features
  • High Efficiency (over 95%)
  • Low profile, less than 0.5 inches (12.5mm) max component height
  • Self-driven synchronous rectifiers reduce drive complexity

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Schematic/Block Diagram

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Test Data

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Design Files

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Parametrics
 PMP10395.1
(Output Voltage 1)
Vin (Min) (V)18
Vin (Max) (V)60
Vout (Nom) (V)6
Iout (Max) (A)31
Output Power (W)186
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
CSD18540Q5B  60V, N-Channel NexFET™ Power MOSFET   MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
UCC27511  4A/8A Single Channel High-speed Low-side Gate Driver  Gate drivers  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)
CSD18540Q5B VSON-CLIP (DNK)| 8 Download -
UCC27511 Download Download
UCC2897A Download Download
Download Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 4492 14 Oct 2014
Design files (4)
Title Type Size (KB) Date
PDF 338 14 Oct 2014
PDF 87 14 Oct 2014
PDF 84 14 Oct 2014
PDF 186 14 Oct 2014

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