Transcription of Full digitally controlled Power Supply design
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Full digitally controlled Power Supply design
Full digitally controlled Power Supply design Olivier Monnier TI Business Development Manager, C2000 DSP Controllers Agenda The Digital Vision: Why DSP? Digital world: FACTS and FIGURES. Digital AC/DC Rectifier challenges Software Strategy Implementation Next Steps Agenda The Digital Vision: Why DSP? Digital world: FACTS and FIGURES. Digital AC/DC Rectifier challenges Software Strategy Next Steps The Digital Vision Why Digital Approach for Power Supplies? Why DSP Controllers? Typical Analog based AC/DC rectifier V I V V I V I. Filter V I. PFC DC/DC. Bridge Output 8 4. 5 1. Inrush/ DC/DC Current/Load PFC. Hot-plug Converter Sharing Control Control Control Control Multi-mode Interface optional Power control circuit Monitor Supervisory MCU House (MCU ?) Keeping Circuits UART. Aux P/S To Host Digital approach with Single Device example for AC/DC Rectifier A. 1000W / 48 V. F2810 DSP based 2 Phase PFC-IL. Phase shifted ZVS-FB. 200 KHz PWM (DC/DC).
Digitally controlled power stage S/W role: Supervisory + Monitoring + Comms + Closed loop control 16 / 32 bit DSP based “Opposing” approaches to Software development 1. “Conservative approach” • Strictly High level language (e.g. C / C++) • Conventional function calling / parameter passing • Real-time OS as needed 2.
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