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SW/HW Co-design Term Project Charge Pump System For DC/AC Conversion with Changeable Frequency

SW/HW Co-design Term Project Charge Pump System For DC/AC Conversion with Changeable Frequency. R92943074 胡以農 R92943061 詹作晟. Outline. System Block Diagram Charge Pump Circuit Oscillator Circuit Control Signal ADC Circuit Simulation Results Conclusion. System Block Diagram.

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SW/HW Co-design Term Project Charge Pump System For DC/AC Conversion with Changeable Frequency

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  1. SW/HW Co-designTerm ProjectCharge Pump System For DC/AC Conversion with Changeable Frequency R92943074胡以農 R92943061詹作晟

  2. Outline • System Block Diagram • Charge Pump Circuit • Oscillator Circuit • Control Signal • ADC Circuit • Simulation Results • Conclusion

  3. System Block Diagram DC Charge Pump 3.6 V 1.8 V Control Clock ADC Vdd Oscillator Clock AC Charge Pump 7.2 V

  4. Charge Pump Circuit

  5. Analysis of The Charge Pump _ + 2Vin Charge phase Transfer phase

  6. Waveform of DC Charge Pump

  7. Charge Pump For DC/AC Conversion

  8. Phase 1

  9. Phase 2

  10. AC Output Voltage V1 4Vin Vo 4Vin 0 t V2 t t 4Vin -4Vin 0 t

  11. Waveform of AC Waveform

  12. Oscillator Circuit I VH L L H S Q VH L L H R VL f = I/2CV C V=(VH-VL) VL I

  13. Control Signal Charge Pump Oscillator Cf ADC A Op Control signals 0000 0001 0011 0111 1111

  14. ADC Simulation Circuit

  15. Matlab Simulation

  16. Simulation Result

  17. Conclusion • Use more than one small capacitor in a chip to achieve the large driving current ability. • Use low voltage to produce a high voltage in order to drive a system.

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