drv8332 high side current sensing

keith kuemmerle1

Other Parts Discussed in Thread: DRV8332

I am planning to use the drv8332. I also have the DRV8312EVM. In the EVM low side current sensing is use. The data sheet recommends high side current sensing if possible. Are their any app notes or reference design for high side current sensing for the 8332/8312?

over 12 years ago

0 Ryan Kehr over 12 years ago

TI__Guru 55605 points

Keith,

To be clear, there is nothing wrong with using low-side sensing as long as you keep the delta voltage between GND and PGND to <100mV. If you size the sense resistor appripriately, there should be no concerns here.

For current sensing products from TI in general, please search around on the following page.

http://focus.ti.com/paramsearch/docs/parametricsearch.tsp?family=analog&familyId=426&uiTemplateId=NODE_STRY_PGE_T

0 keith kuemmerle1 over 12 years ago in reply to Ryan Kehr

Prodigy 80 points

Yes I understand but my question still remains.

Are their any app notes or reference design for high side current sensing for the 8332/8312?

0 Ryan Kehr over 12 years ago in reply to keith kuemmerle1

TI__Guru 55605 points

Keith,

Unfortunately, we do not have any applicaiton notes or reference designs specific to the DRV8332/8312 that include high-side sense.

There is some mention of it in the datasheet via the link below and this is the part I would recommend.

http://www.ti.com/product/ina282

0 keith kuemmerle1 over 12 years ago in reply to Ryan Kehr

Prodigy 80 points

Great, thanks!! Now I can justify to my boss's taking some extra time to design!!

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drv8332 high side current sensing