PMP6961 Reference Design

Texas Instruments

220V-400VDC Input: 12V/100W Active Clamp Forward Reference Design


This reference design generates an isolated 12V/100W output from a high voltage DC input. This design is intended to operate from the output of a PFC front end regulator. The UCC2897A is used to control an active clamp forward converter. Self-driven synchronous rectifiers allow for over 91% efficiency. An accurate current limit is provided by directly sensing the output current. A clock pulse output is also provided for synchronizing with other converters.

  • 220V-400VDC to 12V/8.333A Output (100W) 91% efficiency Ouput Current Sensing Features UCC2897A Controller along with TI NexFET Synchronous Rectifiers Active Clamp Forward Topology Reduced conduction losses with synchronous rectifiers
Product Categories
  • Power management


Part Number Name Companion Part
SN74AHCT74 SN74AHCT74 Buy Datasheet
TL103WA TL103WA Buy Datasheet
TL431A TL431A Buy Datasheet
UCC2897A UCC2897A Buy Datasheet

Bill Of Materials

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Test Data

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Other Documents

Title Updated Type Size (KB)
PMP6961 Gerber 26 Feb 2014 ZIP 223
PMP6961 PCB 30 Mar 2012 PDF 380
PMP6961 Schematic 30 Mar 2012 PDF 177
PMP6961 Bill of Materials 30 Mar 2012 PDF 83