DRV2667: Can the DRV2667 drive two piezo actuators at the same time?

Jamie Tseng

Intellectual 2405 points

Part Number: DRV2667

Hi team,

My customer is planning to use DRV2667 in their new project.

They're wondering if DRV2667 can drive two piezo actuators at the same time?

Thanks and best regards,

Jamie

over 5 years ago

0 Luis Fernando Rodriguez S. over 5 years ago

TI__Guru* 84915 points

Hi, Jamie,

We will take a look at this and will answer as soon as possible.

Best regards,

Luis Fernando Rodríguez S.

0 Luis Fernando Rodriguez S. over 5 years ago in reply to Luis Fernando Rodriguez S.

TI__Guru* 84915 points

Hi, Jamie,

Yes, it is possible to drive two piezos connected in parallel to the DRV2667 outputs. However, it is important to check the equivalent capacitance of the piezos array. The DRV2667 has a limited bandwidth depending of the piezo capacitance. Please take a look at the "Load Capacitance" parameter in the recommended operating conditions section of the datasheet for details:

http://www.ti.com/lit/ds/symlink/drv2667.pdf#page=4

I hope this helps you. Let me know if you have additional questions or comments on this.

Best regards,
Luis Fernando Rodríguez S.

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DRV2667: Can the DRV2667 drive two piezo actuators at the same time?