topic NXP BLDC Motor Controller - Improve Power Stage in S12 / MagniV Microcontrollers

NXP BLDC Motor Controller - Improve Power Stage

datamstr — Fri, 28 Oct 2022 21:48:57 GMT

Hello all,

I am looking to build a BLDC motor controller or modify one. The NXP reference boards are insufficient with the power stage current. The motor I have is 3 phase and intended for operation in roughly the 12 to 14 V dc range. The motor power rating is somewhere around 1.2 KW and I think the stall current is around 150 Amps. I am not sure what the average operating current is. Also, I think the design was for operation up to around 4,000 RPM and the motor design is 12 slots with 8 poles.

Any thoughts about using a NXP reference design and modifying the Power Output Stage to handle the motor I have?

I have the S12ZVML MINI-BRD Development Board for 3-phase sensorless BLDC and I have the S32k144 Eval board.

Here are my questions:

Should I try to modify the power stage of the S12ZVML-MINIBRD to drive my motor or should I look at the S32K144 Eval board since I need to modify the power stage anyway or should I do a design from scratch?

If I try to modify the S12ZVML-MINIBRD power stage, what changes need to be made for the sensorless feedback?

Thanks,
David

Re: NXP BLDC Motor Controller - Improve Power Stage

lama — Mon, 31 Oct 2022 12:36:53 GMT

Hi,

the colleague of mine from an app group suggests following...

My sugestion is not to use https://www.nxp.com/design/development-boards/automotive-motor-control-solutions/magniv-and-s12-solutions/s12zvml-3-phase-bldc-pmsm-evaluation-kit:S12ZVML-MINIXXX

S12ZVML 3-phase BLDC/PMSM Evaluation Kit

The S12ZVML-MINIBRD evaluation board and the S12ZVML-MINIKIT evaluation kit are engineered for 3-phase BLDC and PMSM sensorless motor control applications.

but this one

https://www.nxp.com/design/development-boards/automotive-motor-control-solutions/magniv-and-s12-solutions/s12zvm-high-current-bldc-pmsm-evaluation-board:MCSXSR1CS12ZVM

S12ZVM high-current BLDC/PMSM Evaluation Board

The MCSXSR1CS12ZVM is an evaluation board engineered for 3-phase brushless direct current (BLDC) and permanent magnet synchronousmotor (PMSM) control in high-current applications

It is for higher power and there are also supporting documents and files.

Best regards,

Ladislav

Re: NXP BLDC Motor Controller - Improve Power Stage

datamstr — Sun, 06 Nov 2022 11:02:36 GMT

Thanks Ladislav!

I will take your suggestion and use the MCSXSR1CS12ZVM for my motor control solution.

David