DRV8703-Q1: VGS Waveform abnormal

Ethan Liu

Part Number: DRV8703-Q1

Tool/software:

Hi team,

We use DRV8703-Q1 in EPB, and found the low side MOSFET has a transient voltage change as shown in the below figue, can you help elaborate possible reasons?

With Load:

Without Load:

BR,

Ethan

10 months ago

0 Ethan Liu 10 months ago

TI__Intellectual 1445 points

Hi team,

Any feedbacks about above issues?

BR,

Ethan

0 Ibinu Alaudeen Nadeera 10 months ago in reply to Ethan Liu

TI__Genius 11811 points

Hi Ethan,

Thanks for your question.

Our device expert will look into this an respond to you.

Thanks,

ibinu

0 Ethan Liu 10 months ago in reply to Ibinu Alaudeen Nadeera

TI__Intellectual 1445 points

Hi all,

Pls help on this soon, thanks!

BR,

Ethan

0 Shinya Morita 10 months ago in reply to Ethan Liu

TI__Mastermind 44835 points

Hi Ethan,

Thank you for your questions.

-Could you provide DRV and external FET related schematic?

-Could you point out exactly where this waveform is measured?

-What is the load current level?

-Normally we'd better to have GH/SH/GL/VM/SL and motor current waveform to accelerate debug ad 1st step.

regards

Shinya Morita

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DRV8703-Q1: VGS Waveform abnormal