Driver circuitry for piezoelectric transducers
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United States of America
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Jul 9, 2024
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N/A
app pub date -
Jun 18, 2020
filing date -
Jun 18, 2020
priority date (Note) -
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Abstract
The present disclosure relates to driver circuitry for driving a piezoelectric transducer. The circuitry comprises: output stage circuitry configured to receive an input signal and to drive the piezoelectric transducer to produce the output signal; variable voltage power supply circuitry configured to output a supply voltage for the charge drive output stage circuitry, wherein the supply voltage output by the variable voltage power supply circuitry varies based on the input signal; a supply capacitor for receiving the supply voltage output by the variable voltage power supply circuitry; a reservoir capacitor; and circuitry for transferring charge between the reservoir capacitor and the supply capacitor.
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