Dear team,
My customer wants to use our device to drive a coil, and there will be bidirectional current on this coil. In addition, this coil has a special feature, when the current flowing through the coil is less than 0.1A, its equivalent inductance is about 5H, and it will suddenly change to 0.5mH when it exceeds 0.1A.
1. Can our device drive such coil?
2. They want to place one shunt resistor(0.5ohm) between PGND and actual GND, this resistor is used to monitor the current, is it ok? In the second picture, I noticed there is one resistor connected to GND, it should be the shunt resistor, right?
Thanks & Best Regards,
Sherry