DRV2700: Using the DRV2700 for ultrasonic cleaning applications

Craig Easdale

Part Number: DRV2700

I've stumbled across the DRV2700 in my hunt for an effective, simple solution to drive a piezoelectric element for use in ultrasonic cleaning.

I'm trying to drive about 10W of power into the piezo from a 12-24V DC supply. The frequency is likely to be ~40-45KHz.

Can someone tell me if this will be an appropriate part for the task? If not, does TI produce any other parts that may be suitable for my application?

Thanks.

over 6 years ago

0 Luis Fernando Rodriguez S. over 6 years ago

TI__Guru* 84915 points

Hi, Craig,

We will take a look at this and will answer in few moments.

Best regards,
Luis Fernando Rodríguez S.

0 Luis Fernando Rodriguez S. over 6 years ago in reply to Luis Fernando Rodriguez S.

TI__Guru* 84915 points

Creig,

Unfortunately, low power actuator drivers might not be able to drive such high frequencies. As shown in the typical characteristics section, the output voltage is reduced depending of the capacitance load and the output frequency. If more than 20KHz is applied, the output voltage will be strongly reduced. Even if the highest gain and VPVDD level is used, the output voltage will be almost 0V even with no load connected:

http://www.ti.com/lit/ds/symlink/drv2700.pdf#page=7

Please let me know if you have additional questions or comments on this.

Best regards,
Luis Fernando Rodríguez S.

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DRV2700: Using the DRV2700 for ultrasonic cleaning applications