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150W 12V automotive sensorless BLDC motor component selection help

Jan Bos
Prodigy 45 points
Other Parts Discussed in Thread: BOOSTXL-DRV8305EVM, DRV8305

Hello everybody,

I could use some help selecting some components for a new project we are working on. I am stuck with a NDA so can't share too much about but it is a 12V around 150W automotive sensorless BLDC motor we need to control. Max RPM is around 3000 rpm.

I have not used TI before in BLDC motor control before so I am kinda lost here. I have looked around and see there are several ways to accomplish this but of course, I am looking for the most economic solution.  Considered MCU F28027 Launchpad + BOOSTXL-DRV8305EVM to get started but not sure if this is the smartest way.

Could somebody help me to get going?

Thanks,

Jan

  • 0
    TI__Guru** 114905 points
    Hi Jan,

    The BOOSTXL-DRV8305EVM + Launchpad is a good starting point. There is also the www.ti.com/.../DRV8305-Q1EVM which has the automotive version of the device on the EVM.

    In both cases, you can connect connect a different mcu. In some cases you can change the FETs assuming the same footprint.
  • 0 in reply to Rick Duncan
    Prodigy 45 points
    Hey Rick,

    Thanks for your quick reply! Being familiar with another chip manufacturer's products and now switching to TI for this project is daunting to say. I will get the boards on order and I assume after reading the datasheets that the automotive version of the DRV8305 is for the CPU and motor almost the same. I will need the automotive version as this is a requirement but will first see if we can get things spinning with the regular versions. Once we have a base settings and code that looks OK and the motor does what we want, I will switch over to all automotive grade components and do the board design from there after confirming they work as planned.

    Downloading software now and instructions/how-to's etc. Will be back most likely with more questions and updates.

    BR,

    Jan