30W Active Clamp Forward Converter Reference Design

(ACTIVE) PMP11478

Description & Features

Technical Documents

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Key Document

Description

PMP11478 is an isolated active clamp forward converter accepts a voltage range of 24-36V and delivers a 12V output at 2.5A. This design uses the LM5026 active clamp current-mode controller. Output voltage regulation is maintained using an LMV431 shunt regulator and opto-coupler feedback. Schottky rectifiers allow for holdup of 2.5ms using the stored charge of the output capacitors. The isolation voltage is 2250 VDC meeting basic insulation requirements.

Features
  • Active clamp forward control for higher power density
  • Isolated output
  • Synchronization capability
  • Wide bandwidth feedback for improved transient response
  • Overcurrent and hiccup protection

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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
 PMP11478.1
(Output Voltage 1)
Vin (Min) (V)24
Vin (Max) (V)36
Vout (Nom) (V)12
Iout (Max) (A)2.5
Output Power (W)30
Isolated/Non-IsolatedIsolated
Input TypeDC
TopologyForward- Active Clamp

TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD19533Q5A  100V, 7.8mOhm, SON5x6 N-Channel NexFET™ Power MOSFET  MOSFETs  Sample & Buy Not Available
LM5026  Active Clamp Current Mode PWM Controller  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules
LMV431A  Low-Voltage (1.24V) Adjustable Precision Shunt Regulators  Voltage references  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD19533Q5A VSONP (DQJ)| 8 Download
LM5026 Download Download
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LMV431A 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 1234 04 Jan 2016 20
Design files (7)
Title Abstract Type Size (KB) Date Views
ZIP 218 04 Jan 2016 15
ZIP 571 04 Jan 2016 8
PDF 1102 04 Jan 2016 15
PDF 148 04 Jan 2016 7
PDF 96 04 Jan 2016 8
PDF 135 04 Jan 2016 13
PDF 404 04 Jan 2016 44

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