Q1 - Can the INA186 be used to measure current of a PWM signal?
TI Support Engineering answer,
ANSWER:
The INA186 should not be used to measure PWM signals. It is recommended that the INA240 or INA241 is used instead as these devices are designed with PWM rejection.
[FAQ] INA186-Q1: Can the INA186 be used with a PWM input? - Amplifiers forum - Amplifiers - TI E2E support forums