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6kW GaN Motor Driver

Small, efficient, powerful, flexible, repairable, open source

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I decided to take a dip in to the power electronics world. That dip became a dive in to the deep end.

Stats:
- 7-80V
- 80A Continuous, 160A Peak
- 75x50x10mm without heatsinks
- $45/PCBA at 100pcs

Advantages over Si-based motor drivers:
- More power per PCB area
- High switching frequency (almost no audible coil whine)
- More efficient power delivery
- More efficient operation
- Less thermal resistance (easier to cool)
- Higher operating temperatures (more robust)

This project was developed as a part of my business, Crab Labs, in order to better service clients in the automation, robotics, and space industries.

The aim of the project is to be as flexible and powerful as possible 

OpenMD-F_Fab.pdf

Top Parts

Adobe Portable Document Format - 210.58 kB - 07/28/2024 at 21:07

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OpenMD-B_Fab.pdf

Bottom Parts

Adobe Portable Document Format - 191.88 kB - 07/28/2024 at 21:07

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OpenMD.pdf

Schematic

Adobe Portable Document Format - 1020.13 kB - 07/28/2024 at 21:07

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