DRV8871-Q1: Sense Resistor for current measurement

Roland Melad

Part Number: DRV8871-Q1

Hello,

Our customer is looking for a way to sense the current flowing through the motor. Can they have a sense resistor between Pin 7 (PGND pin) and Power ground?

Regards,

Roland

over 4 years ago

0 Hector Hernandez Luque over 4 years ago

TI__Expert 8985 points

Hi Roland,

You can put a sense resistor there, but you must make sure the voltage on the pin does not violate the abs max of the pin (see the ISEN pin abs max). We are correcting the abs max name ISEN to PGND in a future datasheet update.

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DRV8871-Q1: Sense Resistor for current measurement