Two Phase Interleaved LLC Resonant Converter Reference Design Using C2000™ MCUs

(ACTIVE) TIDM-1001

Description & Features

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Key Document

Description

Resonant converters are popular DC-DC converters frequently used in server, telecom, automotive, industrial and other power supply applications. Their high performance (efficiency, power density, etc.), improving requirements of the various industry standards, and the ever increasing power density goals have made these converters a good choice for medium to high power applications.

This design implements a digitally controlled 500W two phase interleaved LLC resonant converter. The system is controlled by a single C2000™ microcontroller (MCU), TMS320F28379, which also generates PWM waveforms for all power electronic switching devices under all operating modes. This design implements a novel current sharing technique to accurately achieve current balancing between phases.

Features
  • Digitally controlled two phase interleaved LLC resonant DC-to-DC converter
  • Excellent current sharing between phases without any additional hardware
  • Peak efficiency: 94.5%. Efficiency > 90% for all loads above 10% of rated load
  • powerSUITE support for easy adaptation of software for a customized power level
  • Fault protection: phase/output over-current, output over-voltage, and input under-voltage and overvoltage
  • Phase shedding with programmable limits

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TI Devices (6)

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
OPA365  2.2V, 50MHz, Low-Noise, Single-Supply Rail-to-Rail Operational Amplifier  Operational Amplifiers (Op Amps)  Sample & Buy View Design Kits & Evaluation Modules
PTH08080W  2.25 A, 4.5-V to 18-V Input Wide Adjust Miniature Power Module  Non-Isolated Module  Sample & Buy View Design Kits & Evaluation Modules
TMS320F28379D  Dual-Core Delfino Microcontroller  Real-time Control  Sample & Buy View Design Kits & Evaluation Modules
TPS795  Ultralow-Noise, High-PSRR, Fast, RF, 500-mA Low-Dropout Linear Regulators  Linear Regulator (LDO)  Sample & Buy View Design Kits & Evaluation Modules
UCC27524A  Dual, 5A, High-Speed Low-Side Power MOSFET Driver, with Negative Input Voltage Ability  MOSFET and IGBT Gate Drivers  Sample & Buy View Design Kits & Evaluation Modules
UCD7138  Low-Side Power MOSFET Driver With Body Diode Conduction Sensing  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 TI Recommends
PDF 19400 21 Mar 2017 2,830
White papers (1)
Title Abstract Type Size (KB) Date Views
PDF 3648 07 Jul 2017 5,210
Design files (6)
Title Abstract Type Size (KB) Date Views
PDF 3925 05 Apr 2017 386
ZIP 278 05 Apr 2017 496
ZIP 2433 05 Apr 2017 403
PDF 782 21 Mar 2017 206
PDF 119 21 Mar 2017 299
PDF 1356 21 Mar 2017 1,174
Related Tools & Software

Development Tools (1)

Name Part Number Tool Type
powerSUITE - Digital Power Supply Design Software Tools for C2000™ MCUs  POWERSUITE  SW Development Tools, IDEs, Compilers 

Software (1)

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



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