PMP9656 Reference Design

Texas Instruments

48V-60VDC Input: 12V/250W Active Clamp Forward Reference Design

Description

This reference design generates a 12V/21A output from 54V DC input. The UCC2897A controls an active clamp forward converter power stage. The low gate charge and low RDSon of the CSD18532Q5B: implemented as self-driven synchronous rectifiers: allow this design to achieve a max load efficiency of nearly 96%.  The compact UCC27511 drivers simplify the gate drive circuitry for the synchronous rectifiers.

Features
  • Over 95% efficiency at max load89% efficiency at 10% loadLow output rippleSelf-driven synchronous rectifiers (using CSD18532Q5B MOSFETs) reduce drive complexityGenerates regulated 12V bus for telecom or server applicationsLow profile: less than 14mm max component height
Applications
Product Categories
  • Power management

Parts

Part Number Name Companion Part
UCC27511 UCC27511 Buy Datasheet
UCC2897A UCC2897A Buy Datasheet

Bill Of Materials

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Schematic

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Test Data

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Other Documents

Title Updated Type Size (KB)
PMP9656 PCB 16 Oct 2014 PDF 424
PMP9656 Assembly Drawing 16 Oct 2014 PDF 89
PMP9656 BOM 16 Oct 2014 PDF 84
PMP9656 Schematic 16 Oct 2014 PDF 159