DRV8243H-Q1EVM: PSPICE model IPROPI behaviour

Hi,

Thank you for your question. Our expert will review and feedback to you in early of next week.

Hi Martinsen,

it might be an issue with the model. IPROPI should be a positive value:

Since current sensing is done on the high side FET for both bridges reversing the load current should have no impact. Let me check with team on the spice model accuracy.

Best

Keerthi

Here is a picture of the plot, where you can see that the signal goes negative.

Hi Kim,

Thank you for the waveform. I will update as soon as I hear back from the systems engineer.

Best,

Keerthi

Hi,

The specific application is for driving a solenoid in current drive mode.

Hi Kim,

Can you give me the current specifications?

Do you need peak and hold regulation?

What voltage?

Best,

Keerthi

Hi,

I have several use cases in mind for this IC, also a small motor driver in the 5A range.

In the Solenoid cases I need to be able to sense current in the 0.25A-1.25A range and do a current regulation.

For both cases it is 12V - 24V automotive.

Hi Kim,

Here is another part that might fit your application:

DRV3946-Q1 data sheet, product information and support | TI.com

Best,

Keerthi

Hi Keerthi,

The DRV3946-Q1 is not compatible with my design since it is not a H-bridge configuration.

Can some of your experts not fix the DRV8243H pspice model?

Hi Kim,

The issue will be fixed but they currently don't have a timeline on when it will be completed.

Best,

Keerthi