DRV103: Can you use one resistor to set the oscillation frequency on multiple DRVs?

Robert Sander

Part Number: DRV103

Hello,

May I ask if you can you use one resistor(205K) to set the oscillation frequency on (6) DRV103U's? Also, by extension, can I use one delay adjust capacitor to set the delay on all 6 DRV's?

Thank you for your time.

Entechbob

over 4 years ago

+1 Shreyas Dmello over 4 years ago

TI__Mastermind 32650 points

Hi Entechbob,

I do not believe that use case is recommended. The DRV device pushes a reference current through the resistor and a charge current through the capacitor. Connecting many devices to the same passive could cause incorrect references to be generated.

I would recommend you to use one set of passives per device.

Thanks,

Shreyas

0 Robert Sander over 4 years ago in reply to Shreyas Dmello

Prodigy 10 points

Hello Shreyas,

Thank you for your response. I will heed your recommendation as I was leaning towards that answer too.

Have a great day!

Entechbob

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DRV103: Can you use one resistor to set the oscillation frequency on multiple DRVs?