DRV8824: DRV8824 layout check

Eric Shen42

Part Number: DRV8824

Dear TI:

Please help to check DRV8824 layout of PIN Bout1 and Bout2. Bout1 and Bout2 are not at the same layer, and they intersect at different layers. Will the layout affect the output performance?

over 6 years ago

0 Wang5577 over 6 years ago

TI__Guru 56650 points

Eric,

Does the board have ground layers?
The PWM frequency is about 50kHz. It is not very high. The board should be OK. The ground layer is good for thermal performance and help reduce the parasitic inductance.
The following link gives calculation for a trace or a via parasitic inductance.
www.allaboutcircuits.com/.../
referencedesigner.com/.../cal_13.php

0 Eric Shen42 over 6 years ago in reply to Wang5577

Expert 2750 points

Hi Wang:
Thanks for your reply!

The board has ground layers, the ground layers between Bout1 and Bout2.

0 Wang5577 over 6 years ago in reply to Eric Shen42

TI__Guru 56650 points

Eric,

I would think the board should be OK.

0 Eric Shen42 over 6 years ago in reply to Wang5577

Expert 2750 points

Hi Wang:
OK, thanks!

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DRV8824: DRV8824 layout check