DRV8813: Add a capacitor with the ISENpin.

Kengo.Y

Part Number: DRV8813

Hi team,

I saw noise on the ISEN pin and would like to add a 1uF ceramic capacitor.
Is it okay to add a ceramic capacitor to the ISEN pin?

Sincerely.
Kengo.

over 3 years ago

+1 Pedro Arango Ramirez over 3 years ago

TI__Expert 4970 points

Hi Kengo,

I am happy to be able to assist you today. It is generally not a recommended route as it would increase the system's cost, I would first look at PCB layout and chip density on the board, however it should be fine to add a 0.1-1uF capacitor to the ISEN pin. Remember to try to put it as close to the pin as possible.

Here is a similar thread covering the topic by one of our gurus:

https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/789770/drv8818-addition-capacitance-to-prevent-from-noise-at-isensex-pins

Best,

Pedro Arango Ramirez.

Motor drivers

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DRV8813: Add a capacitor with the ISENpin.