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

(ACTIVE) PMP6961

Description & Features

Technical Documents

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Description

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.

Features
  • 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

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  




Parametrics
 PMP6961.1
(Output Voltage 1)
Vin (Min) (V)220
Vin (Max) (V)400
Vout (Nom) (V)12
Iout (Max) (A)8.3
Output Power (W)99.6
Isolated/Non-IsolatedIsolated
Input TypeDC
TopologyForward- Active Clamp
Forward- Synchronous

TI Devices (5)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD18531Q5A  60V N-Channel NexFET Power MOSFETs, CSD18531Q5A  Power MOSFET  Sample & Buy View Design Kits & Evaluation Modules
SN74AHCT74  Dual Positive-Edge-Triggered D-Type Flip-Flops With Clear and Preset  Flip-Flop/Latch/Register  Sample & Buy Not Available
TL103WA  Dual OpAmp With Internal Reference  Operational Amplifiers (Op Amps)  Sample & Buy View Design Kits & Evaluation Modules
TL431A  Adjustable Precision Shunt Regulator  Voltage Reference  Sample & Buy Not Available
UCC2897A  Advanced Current-Mode Active Clamp PWM Controller  Offline and Isolated DC/DC Controllers and Converters  Sample & Buy View Design Kits & Evaluation Modules

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
PDF 2931 30 Mar 2012 54
Design files (4)
Title Abstract Type Size (KB) Date Views
ZIP 223 26 Feb 2014 18
PDF 380 30 Mar 2012 25
PDF 177 30 Mar 2012 108
PDF 83 30 Mar 2012 28


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