DRV8144-Q1: Simulation gone wrong?

Daniel Kociolek

Part Number: DRV8144-Q1

Hello Team,

As discussed per email, when using a bigger PCB for a 20A during 2.5s then steady 5A, the tj estimation tool is not working properly for any of the devices with PCB selection.

Indeed the bigger the PCB the bigger the Tj, unless i missed something..

thanks in advance!

Daniel

over 1 year ago

0 Ryan Kehr over 1 year ago

TI__Guru 55605 points

Daniel,

I am not copied on the email. For the benefit of all of us, can you show the results you are getting with screen captures pointing out the errors?

Regards,

Ryan

0 Daniel Kociolek over 1 year ago in reply to Ryan Kehr

TI__Expert 3050 points

Hi Ryan,

I mean it may not be an error, maybe something I missed in the Tj calculations, but please find the max after 2.5s screenshots.

You can also take the tool and use the data as below

154C for 8x4cm

153C for 2x2 cm

Thanks,

Daniel

0 Keerthivasan Kumanan over 1 year ago in reply to Daniel Kociolek

TI__Mastermind 18185 points

Hi Daniel,

I have looped in the systems engineer in charge of this calculator regarding this issue. He is looking into this and will fix it in the near future.

Best,

Keerthi

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DRV8144-Q1: Simulation gone wrong?