Two Phase Interleaved LLC Resonant Converter Reference Design Using C2000™ MCUs
TIDM-1001
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
See the Important Notice and Disclaimer covering reference designs and other TI resources.
Key Document
- Two-Phase Interleaved LLC Resonant Converter Design With C2000™ Microcontrollers (Rev. A)
(PDF 14320 KB)
02 Jan 2020
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), TMS320F280025C, 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.
NOTE: There is an older version of this design using F2837x device available in ControlSUITE.
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
See the Important Notice and Disclaimer covering reference designs and other TI resources.
