DRV8350: Current consumption

Nagata-San,

I would recommend ordering an EVM and checking this condition with your input style and motor. It is hard to accurately predict this information from my side.

That condition where IVM max is 13mA is without any input, obviously this will be higher when input is present.

Regards,

-Adam

Hi, Adam -san,

Thank you for your supports. I just estimate the consumption at this moment.

Could you please check IVCP and IVGLS.
Are the IVCP and swiching of IVGLS supplied from external 1uF cap?

I simply would like to know if IVM would not include IVCP and IVGLS.

Regards,
Nagata.

Nagata-San,

Yes in the non-switching case the IVGLS/IVCP/IDVDD are included in the IVM value.

In the switching case the VM current will increase due to the VCP switching current.

Regards,

-Adam

Adam -san

For your comment,

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In the switching case the VM current will increase due to the VCP switching current.

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How much current will increases in the switching case?

Regards,

Nagata.

Hi, Adam -san,

Is the below Ivcp added to IVM ( = 13mA) in the switching case?
e.g. if VM = 12V, Total VM current is 33mA( = 13mA + 20mA)

Or is there charge time to charge external cap? With the condition such as VVCP=10V, external cap =  1uF and Ivcp = 20mA, charging time may 0.4ms ( =  1uF x 10V / 20mA). I believe the IVM may increase 20mA from 13mA for 0.4ms during switching if VM = 12V. Is my understanding correct?

Regards,
Nagata.