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DRV2700EVM: versus DRV2700EVM-HV500

halo
Expert 1030 points
Part Number: DRV2700EVM
Other Parts Discussed in Thread: DRV2700, ,

Can anyone help me decide which unit would be better to buy. Apart from a higher output voltage, they don't seem to be that dissimilar. Why would I want one rather than the other. To confuse matters more, the more expensive one has lower output voltage. Thanks. Harry.

  • 0
    TI__Mastermind 20085 points

    Hi Halo,

    The DRV2700 was designed for two main configurations which are Boost + Amplifier mode and Flyback mode. DRV2700EVM uses the boost + amplifier mode, you can refer the Boost + Amplifier mode section in the amplifier's datasheet to find further information about this mode.
    DRV2700EVM-HV500 uses the flyback mode, so you can refer the Flyback mode section in the amplifier's datasheet to find further information about this mode.

    Best Regards
    José Luis Figueroa
    Applications Engineer

  • 0 in reply to José Luis
    Expert 1030 points

    Thanks for your reply, Jose. Ultimately, what I want is to select the EVM that can drive a given piezo element (C=1uF) at the highest frequency for vout=100V. Given that output voltage is not my primary concern, I suspect it is true to say that neither EVM is better than the other. If that is true, then I should probably select based on which is more versatile. Any comments? Harry.

  • 0 in reply to halo
    TI__Mastermind 20085 points
    Hi Harry,

    I recommend you to select the DRV2700EVM as your application doesn't need very high voltage. You can refer the figure 9-12 to find the Gain Bandwidth with C=1uF under different conditions. This will help you to observe the piezo behavior at different frequencies.
    I hope this helps you.

    Best Regards
    José Luis Figueroa
    Applications Engineer
  • 0 in reply to José Luis
    Expert 1030 points

    Thanks, Jose. I'll accept your recommendation. Thanks again for your help. Harry.