12V Magnet Driver PCB Design
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Addressing user frustration.
Creating a clear plan.
Understanding component linking in the plan.
Acknowledging user frustration.
Creating the project plan.
- Power: add XT30 connector, define 12V/GND, include input decoupling/protection.
- Channels x2: place IRLR8721 with a series Resistor, a gate‑to‑source Resistor, and a Flyback Diode; add a per‑channel 2‑pin connector.
- Control: add a 3‑pin control connector for CTRL1/CTRL2/GND and wire to the gate resistors.
- Verify/layout/outputs: run ERC/DRC, compact placement/routing per PCBWay, then export BOM and Gerbers.
- Design a compact 2‑channel 12V low‑side magnet driver PCB that uses IRLR8721 MOSFETs to drive loads via low‑side switching. The design features an XT30 power input, a dual 28‑AWG control connector for separate control of each channel, and per‑channel support with a series gate resistor, a gate‑to‑source pulldown resistor, a flyback diode across the load, and individual 2‑pin output connectors. The final deliverables include a complete schematic, a DRC‑clean compact PCB design suitable for PCBWay manufacturing, an exported Bill of Materials, and Gerber files.
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Project Setup
- Update the project description and metadata to reflect the design goal of a 2‑channel 12V low‑side magnet driver.
- Define primary power nets (12V and GND) and add the XT30 power input with its necessary decoupling and protection elements.
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Schematic Design
- Add the IRLR8721 MOSFET for each channel from the Flux parts library.
- For each channel, insert a gate series resistor and a gate‑to‑source pulldown resistor.
- Add a flyback diode in parallel with the load to protect against inductive spikes.
- Place an individual 2‑pin output connector for each channel at the load side.
- Add a dual‑input control connector rated for 28‑AWG signals (with CTRL1, CTRL2, and GND) and connect each control input to the corresponding MOSFET gate series resistor.
- Label and connect all nets appropriately.
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Schematic Verification
- Perform an Electrical Rules Check (ERC) to ensure all nets are correctly connected and all parts meet the design goals.
- Resolve any connectivity or component footprint issues.
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PCB Layout
- Define a compact board outline ensuring short switching loops and proper trace widths for inductive loads.
- Place key components (XT30, MOSFETs with resistors, diodes, connectors) to maintain separation between high-current and control sections.
- Route all nets, ensuring design rules compliance (DRC‑clean) according to PCBWay guidelines.
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Final Outputs
- Export the completed schematic and PCB layout.
- Generate a BOM with all parts used in the design.
- Export Gerber files ready for manufacturing with PCBWay.
- The schematic accurately represents a 2‑channel low‑side magnet driver that meets the 12V, control, and output requirements.
- The PCB layout is compact, DRC‑clean, and adheres to PCBWay manufacturing guidelines.
- All deliverables (schematic, BOM, Gerbers) are correctly generated and exportable for production.
Started implementing a plan
# Goal
- Design a compact 2‑channel 12V low‑side magnet driver PCB that uses IRLR8721 MOSFETs to drive loads via low‑side switching. The design features an XT30 power input, a dual 28‑AWG control connector for separate control of each channel, and per‑channel support with a series gate resistor, a gate‑to‑source pulldown resistor, a flyback diode across the load, and individual 2‑pin output connectors. The final deliverables include a complete schematic, a DRC‑clean compact PCB design suitable for PCBWay manufacturing, an exported Bill of Materials, and Gerber files.
# Implementation plan
1. Project Setup
1. Update the project description and metadata to reflect the design goal of a 2‑channel 12V low‑side magnet driver.
2. Define primary power nets (12V and GND) and add the XT30 power input with its necessary decoupling and protection elements.
2. Schematic Design
1. Add the IRLR8721 MOSFET for each channel from the Flux parts library.
2. For each channel, insert a gate series resistor and a gate‑to‑source pulldown resistor.
3. Add a flyback diode in parallel with the load to protect against inductive spikes.
4. Place an individual 2‑pin output connector for each channel at the load side.
5. Add a dual‑input control connector rated for 28‑AWG signals (with CTRL1, CTRL2, and GND) and connect each control input to the corresponding MOSFET gate series resistor.
6. Label and connect all nets appropriately.
3. Schematic Verification
1. Perform an Electrical Rules Check (ERC) to ensure all nets are correctly connected and all parts meet the design goals.
2. Resolve any connectivity or component footprint issues.
4. PCB Layout
1. Define a compact board outline ensuring short switching loops and proper trace widths for inductive loads.
2. Place key components (XT30, MOSFETs with resistors, diodes, connectors) to maintain separation between high-current and control sections.
3. Route all nets, ensuring design rules compliance (DRC‑clean) according to PCBWay guidelines.
5. Final Outputs
1. Export the completed schematic and PCB layout.
2. Generate a BOM with all parts used in the design.
3. Export Gerber files ready for manufacturing with PCBWay.
# Success criteria
- The schematic accurately represents a 2‑channel low‑side magnet driver that meets the 12V, control, and output requirements.
- The PCB layout is compact, DRC‑clean, and adheres to PCBWay manufacturing guidelines.
- All deliverables (schematic, BOM, Gerbers) are correctly generated and exportable for production.
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Started: Documenting architecture and updating project metadata
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rewrite_project_description) returns Cannot read properties of undefined (reading 'save'), which blocks the required architecture-property handshake and therefore blocks adding/wiring parts. This is the same failure mode I saw previously.- A working project save path (try: reload the page, duplicate the project into a new document, or check that you have edit permissions). Once saving works, I will follow the required flow (save "System Architecture" property before adding components , then add/wire the full 2-channel schematic, then run ERC/DRC and proceed to layout guidance and manufacturing outputs).
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