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DRV2700EVM-HV500: PiezoControlConsole Test.

simon kim
Expert 1180 points
Part Number: DRV2700EVM-HV500

Tool/software:

Hi, T.I.

I am testing with DRV2700EVM-HV500.

I test by adjusting the PWM Input Frequency, but the expected waveform does not appear.

Waveforms can be distinguished up to 5000Hz, but beyond that, waveforms cannot be distinguished.

Could it be that I made some mistake?

The environment is as follows:
================================================
Target : DRV2700EVM-HV500
Firmware : TI-Haptics-DRV2700EVM-HV500 v1.1
OS : Windows10 Pro x64bit
PiezoControlConsole Version : 1.2.9.0
Mode : Any Frequency Mode
================================================

Please refer to the following image for board connection status and oscilloscope waveform.


Thank you in advance.

Regards,
Simon

  • 0
    TI__Intellectual 1200 points

    Hi Simon,

    It looks like the input signal is being attenuated. What is your load capacitance? Thanks,

    Regards,

    Sam

  • 0 in reply to Sam Yang
    Expert 1180 points

    Hi, Sam.


    Thank you for your answer.

    I would like to check the output waveform of 24000Hz.
    But I don't get the output waveform I expected.

    What load capacitance should be applied to obtain an output waveform of 24000Hz?

    I tested load capacitances of 10nF, 47nF, and 100nF and a frequency of 25000Hz, respectively.

    Regards,
    Simon