Hello,
I'm interested in use of DRV110 for regulating the excitation current through contactor. The aim is to set 1A current peak during 10ms and then set the holding current to 250mA. Acording to Datasheet i set Rsense=0.5 Ohm / Rhold = 80k / Rpeak = 123k / Ckeep=0.1µF
I try simulate the circuit under LTspice and i get some problem.
I can play with the PWM frequency easly but maybe i'm doing something wrong for the current. But it's hard to say, for me, if the problem come from my DRV110 model or my contactor.
In fact i'm using inductor to simulate my contactor and param it to get somes current. I was thinking that the DRV110 will regulate the peak and hold current itself and that i don't really have to be precise on my inductor model.
I use pulse generator to activate the DRV after 1ms.
Here my simulation:
/cfs-file/__key/communityserver-discussions-components-files/38/pastedimage1617973306538v1.png
current go to 16A and stay at.
Sorry if me error is basic but i'm not an expert in simulation
Can someone have already simulate this componant on LTspice and can help me ?
Thanks in advance
Best regard !