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Team 6: Defender

This project plan outlines the detailed schematics and power supply considerations for the Defender device. It covers microcontrollers, voltage supplies, discharge circuits, and overall design considerations for efficient performance.

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Team 6: Defender

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  1. Stephen Wolf Kirk Iler Brian Bentz FuheXu Team 6:Defender

  2. Current SchematicsMicro, Motor, Keypad Team 6: Defender

  3. Current Schematics3.3V Supply Team 6: Defender

  4. High Voltage Charging Team 6: Defender

  5. Discharging Team 6: Defender

  6. Current PCB Team 6: Defender

  7. Overall Considerations • Two boards (one for HV, one for LV) • Optical Isolation • Some high power traces on comm board (motors) • High voltage trace spacing on power board • Connector issues to motors, coil • Low inductance to coilgun • Thermal management and thermal pad soldering • Availability of headers and extra traces for ICD • Backup solder points for hard to solder parts Team 6: Defender

  8. Microcontroller Considerations • Very few, microcontroller connections are very simple. • Standard bypass capacitors from data sheet. • Follow design guidelines for USB bus and I2C bus. Team 6: Defender

  9. Low Voltage Power Supply • 3.3V regulator thermal management • Switching 12V power rail • Connector to high power board • Separate 12V grounds Team 6: Defender

  10. High Voltage Power Supply • Separate AC transformer with connector. • Low amperage but high rms voltage • Low inductance • Protection mechanisms for capacitor bank • Very wide traces Team 6: Defender

  11. Discharge Circuit • IGBT offboard, screw mount • Low inductance, ESR is critical • Pulse rating for power only • Avoiding reflection and EMI Team 6: Defender

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