Actuator: PCB design and test for motor control

[amzoo]

DoD: PCB board that is able to handle:

• Single Stepper motor (4 wire)
• Single CAN communication
• Power in noisy automotive env (requirements pending, likely 12V @ 10A peak)
• STM32

Saved for V2:

• Single BLDC motor (3 phase)

[ReFil]

Motor driver solutions
https://www.allegromicro.com/en/products/motor-drivers/bldc-drivers/amt49406
https://www.st.com/en/evaluation-tools/b-g431b-esc1.html

[amzoo]

Determine between STM32F4 and STM32F2. In terms of features and ASIL A or B (SIL1) safety reqs

[ReFil]

https://www.st.com/resource/en/user_manual/dm00150573-stm32f2-series-safety-manual-stmicroelectronics.pdf according to this its sil2? i think

…

On Thu, Mar 4, 2021 at 4:24 PM amzoo ***@***.***> wrote: Determine between STM32F4 and STM32F2. In terms of features and ASIL A or B (SIL1) safety reqs — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#11 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AHT2XX4HLEZSDA76DHGAD23TB6X5TANCNFSM4YP4IHCA> .

[ReFil]

for the power stage the VNH2SP30 looks capable of 14A constant 30A burst and up to 16V

…

On Thu, Mar 4, 2021 at 5:11 PM Harry Herring ***@***.***> wrote: https://www.st.com/resource/en/user_manual/dm00150573-stm32f2-series-safety-manual-stmicroelectronics.pdf according to this its sil2? i think On Thu, Mar 4, 2021 at 4:24 PM amzoo ***@***.***> wrote: > Determine between STM32F4 and STM32F2. In terms of features and ASIL A or > B (SIL1) safety reqs > > — > You are receiving this because you commented. > Reply to this email directly, view it on GitHub > <#11 (comment)>, > or unsubscribe > <https://github.com/notifications/unsubscribe-auth/AHT2XX4HLEZSDA76DHGAD23TB6X5TANCNFSM4YP4IHCA> > . >

[dzid26]

Inspiration:
AnanasSTM32-2020-3-9.pdf

[dzid26]

Few designs out there for close-loop stepper drivers lack decent protection against BEMF.

@ReFil
Here is a simple example of what I consider a minimal design that protects motor driver FETs and supply DCDC against overvoltage and reversed polarity: