Two Phase Interleaved LLC Resonant Converter Reference Design Using C2000™ MCUs
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 converterExcellent current sharing between phases without any additional hardwarePeak efficiency: 94.5%; efficiency > 90% for all loads above 10% of rated loadPowerSUITE support for easy adaptation of software for a customized power levelFault protection: phase/output over-current: output over-voltage: and input under-voltage and overvoltagePhase shedding with programmable limits
Applications
- Merchant DC/DC
- Central inverter
- DC fast charging station
- Power conversion system (PCS)
- Rack & server PSU with 48-V output
- Industrial AC-DC
- Railway auxiliary power
- DC fast charging power module
- DC wallbox charger
- 1-phase AC-digital control
- 3-phase AC-analog control
- 1-phase AC-analog control
- 3-phase AC-digital control
- DC-fast charging
- OBC-wireless charging
- Unidirectional HV-to-LV digital loop
- Server PSU with 12-V output
Product Categories
- C2000 real-time microcontrollers