DRV8323: Three phase current with one current sense resistor DRV8323

user5799613

Prodigy 40 points

Part Number: DRV8323

I've a problem with initialize the smart driver, it's similar to this one

https://e2e.ti.com/support/motor-drivers/f/38/t/798109?tisearch=e2e-sitesearch&keymatch=DRV8323

but how do i set up my register from SPx-SNx cause i can only measure SHx-SPx or SHx-SNx.

over 6 years ago

0 Adam Sidelsky over 6 years ago

TI__Guru 65600 points

Hello,

Are you asking about register bits 8 and 10 above? If so these are only concerned with the polarity of the sense resistor connections. It does not matter if all three phases use the same resistor. Bits 8 and 10 allow the SPx to be the top side of the resistor or SNx to be the top side of the resistor.

Regards,

-Adam

0 user5799613 over 6 years ago in reply to Adam Sidelsky

Prodigy 40 points

Does it mean as long as I set Bit 10 as 0, i'll read the value from SPx to SNx.

0 Adam Sidelsky over 6 years ago in reply to user5799613

TI__Guru 65600 points

Yes

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DRV8323: Three phase current with one current sense resistor DRV8323