UCD3138 Digital Resonant LLC Converter Evaluation Module


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Technical Documents

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The Texas Instruments UCD3138LLCEVM-028 evaluation module (EVM) is a digitally controlled half-bridge Resonant LLC converter based on the UCD3138 programmable digital power controller. The EVM accepts DC input voltage in the range 350V to 400V and delivers a regulated 12V DC output, in the range from zero load to 340W power. The EVM features advanced functions such as synchronous rectification, Constant Current/Constant Power (CC/CP) control mode, burst mode, cycle-by-cycle current limitation with duty cycle matching and current sharing to improve efficiency, system protection and overall functionality. The EVM is supplied with a UCD3138CC64EVM-030 Control Card. This card is pre-programmed with half-bridge resonant LLC firmware developed by Texas Instruments. The EVM also can be reprogrammed with custom firmware, allowing users to add functions suited to their needs. The EVM includes a USB-TO-GPIO Interface Adapter to download firmware and program the UCD3138 controller in the EVM.

Note: UCD3138A is an improved version of UCD3138 and is now available. This digital power supply controller from Texas Instruments intelligently optimizes dead time to deliver superior efficiency and performance.

  • Digitally controlled LLC resonant half-bridge DC-DC power conversion DC line input from 350 to 400Vdc
  • Regulated output 12Vdc with output from no-load to full-load
  • Full-load power 340W, or full-load current 29A
  • Synchronous rectification
  • Constant Current/Constant Power control mode
  • Burst Mode Cycle-by-Cycle current limiting with Duty Cycle Matching Protection: over voltage, over current, and brownout
  • PMBUS Communication Test points to facilitate device and topology evaluation

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UCD3138 Digital Resonant LLC Converter Evaluation Module


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Technical Documents
User guides (1)
Title Abstract Type Size (KB) Date Views
PDF 2193 23 Jul 2013 545
Design files (1)
Title Abstract Type Size (KB) Date Views
ZIP 94 14 Jun 2012 324

Software (2)

Name Part Number Software Type
Digital Power Software  FUSION_DIGITAL_POWER_DESIGNER  Application Software & Frameworks 
UCD3138 LLC Half Bridge Firmware  UCD3138FW_LLC  Application Software & Frameworks 

Design Kits & Evaluation Modules (1)

Name Part Number Tool Type
USB Interface Adapter EVM  USB-TO-GPIO  Evaluation Modules & Boards 

TI Devices (5)

Part Number Name Product Family
UCC27524  Dual, 5A, High-Speed Low-Side Power MOSFET Driver  MOSFET and IGBT Gate Drivers 
UCD3138  Highly Integrated Digital Controller for Isolated Power with 3 Feedback Loops and 8 DPWM Outputs  Digital Power Control Solutions 
UCD3138128  Highly-Integrated Digital Controller for Isolated Power  Digital Power Control Solutions 
UCD3138128A  Highly-Integrated Digital Controller For Isolated Power  Digital Power Control Solutions 
UCD3138A64  Highly-Integrated Digital Controller for Isolated Power  Digital Power Control Solutions 

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