DRV8301-69M-KIT: EVM related issues

FRANK1

Part Number: DRV8301-69M-KIT

Hi sir,

I have the DRV8301-69m Kit. and I have three questions on this EVM.

can you help me to clarify them?

1) ADC data is obtained from 0 to 4095, what is the corresponding current value? I'm not sure, but it seems to be between 40A and 60A.

2) In order to put the voltage value of phase ABC into ePWM, the voltage on phase ABC must be divided by the maximum voltage value of the inverter.

After that, the ePWM signal is applied using the division ratio of the CPU clock (the clock of 28069m is 90MHz). What is the maximum voltage value of the inverter?

3) Can I receive the relevant data as a document?

Thanks.

Regards,

over 2 years ago

+1 Yanming Luo over 2 years ago

TI__Guru** 109730 points

FRANK1 said:
1) ADC data is obtained from 0 to 4095, what is the corresponding current value? I'm not sure, but it seems to be between 40A and 60A.

The peak to peak current is 82.5A which is the maximum current at the AD converter, is hardware dependent, and is based on the current sensing and scaling to the ADC input.

FRANK1 said:
What is the maximum voltage value of the inverter?

Not fully understand your question. The maximum output voltage should be Vdc*SQRT(3)/2 if SCPWM is implemented.

FRANK1 said:
) Can I receive the relevant data as a document?

This is a generic FOC question, you could have a look at a textbook about motor control. Or you might take a look at the Instaspin User's Guide as the link below.

InstaSPIN-FOC and InstaSPIN-MOTION User's Guide (Rev. H)

http://www.ti.com/lit/ug/spruhj1h/spruhj1h.pdf

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DRV8301-69M-KIT: EVM related issues