MCT8316AEVM:About MCT8316AEVM problems

Hi Kyohei,

Can you verify that AVDD is ~3.3V?

Can you also enable "Auto Read Fault Status" and "Auto Read Motor Status" when trying to spin the motor?

Please tell me what the Algorithm State is when attempting to spin the motor. 

Regards,

Joshua

Hi Joshua

I have written the contents of the answer in Excel, so please check it.

3225.Question(MCT8316AEVM) 20240513.xlsx

2475.regs(MCT8316AEVM 20240513-1).zip

Regards,
Shibuya

Hi Joshua

When I reviewed the settings with reference to the contents of the following page, I was able to confirm that the brake was released and the motor was driven.
We plan to confirm the detailed operation details from now on, but once the problem has been resolved, we will contact you.

e2e.ti.com/.../mct8316aevm-device-not-work-after-write-register-value-to-eeprom

Regards,
Shibuya

Let me review the closed-loop control of the MCT8316AEMV.
If the target electric angular rotation speed is less than 1.3 kHz, the rotation speed control is working correctly, but when the target value is 1.3 kHz or more, the rotation speed is not followed.
・When I checked the drive voltage, it was not 100% duty, so it seems that the upper limit of motor power does not have an effect.
・When the voltage is lowered, the drive voltage is 100% duty, so the upper limit duty limit seems to be irrelevant.
・When the electric angular frequency is 1.3 kHz or more, the duty of the drive voltage is not uniform.

We will attach a confirmation waveform, so please check it.

Question(MCT8316AEVM) 20240514.xlsx

regs(20240513-2).zip
Regards,
Shibuya

Hi Shibuya,

Please allow me some time to review the information you provided. I will aim to provide a response by Wednesday.

Regards,

Joshua

Hi Joshua
Thank you.

I would also like to ask about the lead angle setting,etc, so please confirm.
(I added it to Excel below)

0572.Question(MCT8316AEVM) 20240514.xlsx
regs (20240514-2).zip

Hi Joshua

Thank you for your answer.
I would like to check the behavior of the contents of the contact.

>>For the FG output, FG is based on the driving frequency.
>>With FG_DIV_FACTOR set to divide by 1 (1b) the FG should rise when one of the phase voltages is high and fall when the phase voltage goes low.
>>Please see figure 8-45 for a visual: 

⇒It says "one of the phase voltages is high", but is it random to refer to the voltage of which phase(A or B or C)?
　Or is the phase you refer to always be phase A?

Regards
Shibuya Kyohei

Hi Shibuya,

I will need to reach out to our systems team to check on this. I will aim to get back with you by 5/22.

Regards,

Joshua

Hi Shibuya,

I am still waiting for a response from our systems team. I will aim to provide you an update by 5/29 at the latest.

Hi Joshua

I understand.
Thank you for contacting us.