DRV8301 RT_CLK

masahiko shimizu

Other Parts Discussed in Thread: DRV8301, TPS54160

My customer is using DRV8301
He has two question.

- Can the resister of connecting between RT_CLK and GND have decoupling capacitor for prevent noise?
Please see attached file. I suggest circuit.
Are there any issue?

- If the above is OK, How large capacitor is OK?
　
Thanks,
ShimizuDRV8301.xlsx

over 9 years ago

0 Wilson Zuo over 9 years ago

TI__Mastermind 26065 points

Hi Shimizu

We don't have such recommendation on both DRV8301 and TPS54160 datasheet. This cap may affects the internal PLL and clk generation.

For P43 of TPS54160 datasheet, we should solve the possible noise by layout.

"The RT/CLK pin is sensitive to noise so the RT resistor should be located as close as possible to the device
and routed with minimal lengths of trace."

Best regards,

0 masahiko shimizu over 9 years ago in reply to Wilson Zuo

Guru 11235 points

Hi Wilson

Thank you for your support.

I understood.

Thanks

Shimizu

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DRV8301 RT_CLK