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DRV2700 - Driving two piezo elements

Kawai
Guru 19785 points
Other Parts Discussed in Thread: DRV2700

Hello Team,

I've found the same question in the following URL.

https://e2e.ti.com/support/other_analog/haptics/f/927/t/521807

Could you please advise us if DRV2700 could drive two piezo elements using each output pin to ground ?

Piezo condition
Voltage : 30Vrms (MAX)
Capacitance : 51nF
Frequency : up to 33kHz

Please also advise us anything that we need to take care.

Best Regards,

Kawai

  • 0
    TI__Genius 10512 points
    Hi Kawai,

    As explained in the other post, yes this configuration is possible. However, the frequency up to 33kHz is out of the range of the DRV2700. Refer to figure 9 of the datasheet to see the bandwidth with different loads and the boost set to 30V. You may be able to achieve ~10kHz.
  • 0 in reply to Kelly Griffin
    Guru 19785 points
    Hello Kelly-san,

    My apologies for my delay. Is there any TI device which could support below requirements ?

    Piezo condition
    Voltage : 30Vrms (MAX)
    Capacitance : 51nF
    Frequency : up to 33kHz

    Best Regards,
    Kawai