DRV8840: Question about DRV8840 CP1 CP2

Daniel Zhao

Part Number: DRV8840

Hello,

Are there any issues will be caused with changing the cp1/2 capacitor from 0.01uF to 1uF? The cp1/2 lower than 1uF will causes EMI issues.

over 8 years ago

0 Rick Duncan over 8 years ago

TI__Guru** 114905 points

Hi Daniel,

We will investigate and reply soon.

0 Rick Duncan over 8 years ago in reply to Rick Duncan

TI__Guru** 114905 points

Hi Daniel,

It is not recommended to increase the cp1/cp2 capacitor by two orders of magnitude.

The design team suggested increasing the capacitance to 47nF.

0 Daniel Zhao over 8 years ago in reply to Rick Duncan

Prodigy 40 points

Hi Rick, Many thanks :-)

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DRV8840: Question about DRV8840 CP1 CP2