DRV8432: DRV8432 vs DRV8402: Can the DRV8402 be dropped in for the DRV8432?

Penn Linder

Part Number: DRV8432

I have the same question. Since we cannot presently get DRV8432, can we use DRV8402 in it's place for the time being? I see that the absolute voltage range is 65V rather than 70V - what other big differences are there?

over 5 years ago

0 Rick Duncan over 5 years ago

TI__Guru** 114905 points

Hi Ivek Engineer,

It is not recommended to drop in the DRV8402 because:
1) The DRV8402 is "NRND" (Not Recommended for New Designs)
2) The devices have the same pinout, but depending on the application may not be functionally compatible. It may work, but will require extensive testing to confirm.

0 Penn Linder over 5 years ago in reply to Rick Duncan

Expert 1035 points

I understand and would prefer not to have to use it but I can't get the DRV8432 at the moment (which we have been using for several years) - my question is what is "not functionally compatible"? I see a difference in absolute voltage range and in current rating, but not much else at first glance of the datasheet.

0 Alecsandru Neacsu over 5 years ago in reply to Penn Linder

Prodigy 190 points

Same question here.

0 Penn Linder over 5 years ago in reply to Alecsandru Neacsu

Expert 1035 points

On paper, the absolute voltage rating and current rating of the DRV8402 is not as high as the DRV8432. Also, there is a slight difference in the current limit threshold using the same resistor value. Finally, there are a couple of HB modes in the DRV8402 that are not used (reserved) in the DRV8432. Whether there are other differences I don't know, plus we haven't tested it yet.

0 Rick Duncan over 5 years ago in reply to Penn Linder

TI__Guru** 114905 points

Hi Ivek Engineer,

Thank you for replying to Alecsandru.

Additional information can be found in this post: e2e.ti.com/.../737753

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DRV8432: DRV8432 vs DRV8402: Can the DRV8402 be dropped in for the DRV8432?