DRV8837C: Negative absolute voltage of out pin

Kuramochi Tadahiko

Guru 28715 points

Part Number: DRV8837C

Hi,

How much is the negative absolute voltage of out pin?

It is not written on the datasheet.

Best Regards,

Kuramochi

over 4 years ago

0 Wang5577 over 4 years ago

TI__Guru 56650 points

Kuramochi,

According to the block diagram, the absolute maximum DC OUTx voltage is the low side FET body diode drop. DRV8837C is safe if the OUTx current is lower than Iocp.

0 Kuramochi Tadahiko over 4 years ago in reply to Wang5577

Guru 28715 points

Wang-san,

Thank you for your reply.

For our reference, what voltage is FET body diode drop when Iocp ?

Is it about 0.5V,1V or 1.5V?

Best Regards,

Kuramochi

0 Wang5577 over 4 years ago in reply to Kuramochi Tadahiko

TI__Guru 56650 points

Kuramochi,

Use some other datasheet as reference, -0.7V is put in the spec to represent one FET body diode drop. But, if we test the voltage, that body diode drop could be 1V.

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DRV8837C: Negative absolute voltage of out pin