Tool/software:
Hi team,
Our customer is designing DRV8873-Q1 and they have a few questions about IPROP resistor selection below. Could you please help check their questions below?
1. Is there a specific reason that IPROPI1, 2 pin should be kept below 5V by Rsense?(Datasheet 7.3.1.3) We see absolute max rating of IPROPI pin is 5.5V.
2. What is the leakage current of IPROPI1, 2 pin when output is 0A?
3. Customer is using motor with max 2A current, so they want to select 1.8kohm Rsense to keep IPROPI pin below 5V. However if overcurrent occurs(like short to GND) 10A could be seen at the output. In that case IPROPI voltage could exceed 5.5V of absolute max rating. Should customer use smaller Rsense, or if they use 1.8kohm Rsense they can put a zenor diode at IPROPI pin to clamp the voltage below 5V?
Thank you,
Muwei Zheng