380VDC Input, 24V/170W Active Clamp Forward Reference Design PMP7391 (ACTIVE)

Description & Features

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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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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
TL431  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)
TL431 Download Download
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Download -
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UCC2894 Download Download
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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 1534 23 Feb 2016
Design files (4)
Title Type Size (KB) Date
PDF 2430 23 Feb 2016
PDF 167 23 Feb 2016
PDF 166 23 Feb 2016
PDF 62 23 Feb 2016

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