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
- Current sharing between phases without any additional hardware
- Peak efficiency: 94.5%. Efficiency more than 90% for all loads above 10% of rated load
- powerSUITE support for easy adaptation of software for a customised 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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