Other Parts Discussed in Thread: UCC37322
I'm using the DRV110 in a design to drive a 120VDC solenoid in Peak and Hold operation.
When I increase the I_hold set point, the OUT gives me something that I don't expect: A long pulse followed by many very short pulses (less than 1 us) at 20kHz.
Is there a reason for this duty cycle of less than 1% It does not seem to agree with the datasheet.
In the pictures below, yellow is OUT and Green is the voltage between the solenoid and Mosfet as shown in the schematic below