380VDC Input, 24V/170W Active Clamp Forward Reference Design

(ACTIVE) PMP7391

Description & Features

Technical Documents

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Key Document

Description

This reference design uses the UCC2894 to control an active clamp forward converter that generates an isolated 24 V at 7 A from a 380-VDC input. This supply is intended to be used with a PFC boost front end and requires an external 12-V bias voltage for housekeeping on the primary side. This supply is up to 91% efficient at full load.

Features
  • 91% efficiency
  • Clamped drain voltage for reduced emissions
  • Compact form factor 64 mm x 90 mm (2.5 in x 3.5 in)

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Schematic/Block Diagram

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Design Guide

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Design Files

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Bill of Materials (BOM)

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Parametrics
 PMP7391.1
(Output Voltage 1)
Vin (Min) (V)320
Vin (Max) (V)380
Vout (Nom) (V)24
Iout (Max) (A)7
Output Power (W)168
Isolated/Non-IsolatedIsolated
Input TypeDC
TopologyForward- Active Clamp

TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TL431A  1% Accuracy Adjustable Precision Shunt Regulator  Voltage references  Sample & Buy Not Available
UCC2894  Current Mode Active Clamp PWM Controller  Offline & isolated DC/DC controllers & converters  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
TL431A Download Download
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Download -
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UCC2894 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 TI Recommends
PDF 1534 23 Feb 2016 279
Design files (4)
Title Abstract Type Size (KB) Date Views
PDF 2430 23 Feb 2016 5
PDF 167 23 Feb 2016 6
PDF 166 23 Feb 2016 57
PDF 62 23 Feb 2016 7

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