HV Resonant LLC Developer’s Kit
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CAUTION: This equipment operates at high voltages and currents which can result in hazardous electrical shock. Please make sure you understand and follow all necessary safety precautions prior to purchasing and operating.

TMDSHVRESLLCKIT is a DIMM100 controlCARD based motherboard evaluation module which uses Piccolo F28027 to digitally control a 300W resonant LLC half-bridge DC/DC converter with added synchronous rectification. The resonant LLC power topology is valued for its inherently high levels of efficiency credited to high frequency, low loss resonant switching. However, implementation of such a power converter can be challenging since the control theory is based in frequency modulation of the converter rather than the more typically seen duty cycle modulation. This solution guides users step-by-step through the complexities of a resonant LLC half-bridge converter, melding software and hardware design approaches to implement a complete high performance converter. The C2000™ Piccolo™ microcontroller is the digital controller for this design, enabling the resonant converter to operate at greater than 90% efficiency across wide load ranges, and with peak efficiency greater than 93%.

  • Full microcontroller-based control of resonant LLC half-bridge DC/DC converter
  • 375-405V DC input, 12 DC output, 25A rated output (300W)
  • >90% efficiency across wide load range with >93% peak efficiency
  • Synchronous rectification support for increased power efficiency
  • Zero voltage switching (ZVS) across entire load range for greater efficiency and reliability
  • Hardware Files are in controlSUITE at development_kits\TMDSHVRESLLCKIT_v1.0

Software Features

  • Free download of Code Composer Studio IDE
  • Free download of controlSUITE for device drivers and example projects
  • Convenient GUI for initial design evaluation, and detailed step-by-step documentation for further depth of evaluation
  • Step-by-step guide details the implementation of the underlying software

Get Started

  • Follow the Quick Start Guide included in the kit
  • Or included in controlSUITE at C:\ti\controlSUITE\development_kits\TMDSHVRESLLCKIT_v1.0

What's Included

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HV Resonant LLC Developer’s Kit


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Technical documentation
Application notes (2)
Title Type Size (KB) Date
PDF 825 02 Jul 2013
PDF 269 07 Feb 2012
White papers (2)
Title Type Size (KB) Date
PDF 904 02 Feb 2017
PDF 1705 22 Jun 2012
More literature (1)
Title Type Size (KB) Date
PDF 39 02 Jan 2019

Software development (1)

Name Part Number Software Type
controlSUITE™ Software Suite: Software and Development Tools for C2000™ Microcontrollers  CONTROLSUITE  Drivers & libraries 

Hardware development (1)

Name Part Number Tool Type
Piccolo controlCARD  TMDSCNCD28027  Daughter cards 

TI Devices (6)

Part Number Name Product Family
TMS320F28020  C2000™ 32-bit MCU with 40 MHz, 32 KB Flash, 8 PWM  Microcontrollers (MCU) 
TMS320F28021  C2000™ 32-bit MCU with 40 MHz, 64 KB Flash  Microcontrollers (MCU) 
TMS320F28022  C2000™ 32-bit MCU with 50 MHz, 32 KB Flash, 8 PWM  Microcontrollers (MCU) 
TMS320F28023  C2000™ 32-bit MCU with 50 MHz, 64 KB Flash  Microcontrollers (MCU) 
TMS320F28026  C2000™ 32-bit MCU with 60 MHz, 32 KB Flash  Microcontrollers (MCU) 
TMS320F28027  C2000™ 32-bit MCU with 60 MHz, 64 KB Flash  Microcontrollers (MCU) 

Support & training

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