TINA/Spice/DRV110: Peak level not correct and no switch to hold

Adam Bierman

Part Number: DRV110
Other Parts Discussed in Thread: TINA-TI,

Tool/software: TINA-TI or Spice Models

Hello,

I have a simulation I am working on involving the DRV110 and I have an issue where the PWM output is not switching to hold levels as expected. It is also not putting out what I would expect for peak levels. The current is consistently rising higher than expected for the resistor values. The schematic and waveform are below. Could someone take a look and tell me if they can explain why I'm not seeing a switch to hold and my peak levels aren't as expected? I have this circuit made up as a prototype as well and it functions as I would expect it to in physical hardware.

over 6 years ago

0 Abhishek Tripathy over 6 years ago

TI__Intellectual 835 points

Hi Adam,
I assume that you are referring to the current through inductor L1 (marked with Red current probe). Please correct me if I am wrong.
Could you please share the project with us so that we can look into it? Kindly mention the PSpice version which you are using.

Thanks,
Abhisek

0 Adam Bierman over 6 years ago in reply to Abhishek Tripathy

Intellectual 700 points

Hi Abishek,

Yes that is the current I am referring to. The project is attached.

MyProject.zip

0 Abhishek Tripathy over 6 years ago in reply to Adam Bierman

TI__Intellectual 835 points

Hi Adam,

We could not open the project in our system. I tried on multiple systems but it says the same error. Please find the error snapshot below.

PSpice says that the project was developed in version 9.2 while we use 16.2 version. While converting it to 16.2 version, it gives this error and then the project crashes.

Could you please download the zipped project and check if it is still working fine on your system? We have observed that at times the project gets corrupted while zipping it. Please resend the project after this check.

Thanks,

Abhisek

0 Adam Bierman over 6 years ago in reply to Abhishek Tripathy

Intellectual 700 points

Hi Abhisek,

I checked the file and it won't open on my machine either from the zip file I loaded. How can I get the files to you if I can't zip them?

Thanks,

Adam

0 Abhishek Tripathy over 6 years ago in reply to Adam Bierman

TI__Intellectual 835 points

Hi Adam,

The zipping error could be a one-time event. Could you please zip it again and send us?

Thanks,
Abhisek

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TINA/Spice/DRV110: Peak level not correct and no switch to hold