V0.3
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Here some pictures and information about V0.3 of Open-BLDC
Features
- Sensors
- Voltage sensing on all three phases
- Current sensing on two phases
- Supply rail voltage sensing
- Comparator for hardware based BEMF zero crossing detection
- Interfaces
- Three board stack allowing easy changes and different revisions of hardware
Changes from V0.2
- Added virtual star point resistor network
- Added comparator for hardware based BEMF zero crossing detection
- Split out gate driver circuitry to a separate board
- Changed the huge D2Pak mosfets to an array of tiny power33 ones
- Added big rail stabilization capacitors
- Added quadrature encoder connector
- The logic board now expects all input signals to be in the 0V-5V range (for compatibility to logic boards that can only do 5V
- Updated and refined inter board connector pinout
- Added additional i2c interface from logic board to power driver and powerstage
- Added i2c eeprom on the power driver board for storing powerstage calibration information
Gallery
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Open-BLDC v0.3 full rear view
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Open-BLDC v0.3 full front view
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Open-BLDC v0.3 powerstage driver
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Open-BLDC v0.3 powerstage top view
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Open-BLDC v0.3 powerstage bottom view
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Open-BLDC v0.3 powerstage driver bottom view
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Open-BLDC v0.3 powerstage driver top view
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Open-BLDC v0.3 logic bottom view
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Open-BLDC v0.3 top view
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Open-BLDC v0.3 heatsinks top and bottom view
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Open-BLDC v0.3 heatsink top view
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Open-BLDC v0.3 heatsink bottom view