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Can the DRV8662 be used to drive a piezo buzzer as an alarm?

Prodigy 130 points

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Can the DRV8662 be used to drive a piezo buzzer as an alarm?

The traditional alarm circuit uses an inductor or auto transformer in parallel with the piezo buzzer to resonate and generate a high voltage.

Is the DRV8662 a suitable alternative?

See the schematic at the top of page 6 for the existing approach to driving the piezo buzzer:

http://www.diodes.com/datasheets/ZSD100.pdf

See also the schematic:

http://www.quasarelectronics.co.uk/kit-files/electronic-kit/3015.pdf

The question is whether the TI IC can replace the T1 autotransformer which is a physically large part?

 

  • Hi, LL:

    from software perspective, you may need some PWM or DAC output to feed the DRV8662.

    please check the below diagrams.

     

    Thanks

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