Apparatus and methods involving control of piezoelectric resonance circuits
AssigneeThe Board of Trustees of the Leland Stanford Junior University
InventorsEric Stolt, Juan M. Rivas-Davila, Weston D. Braun
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Abstract
In certain examples, methods and semiconductor structures are directed to operation of a piezoelectric-based device (e.g., a DC-DC converter) and such operation may involve selectively switching inputs of the piezoelectric-based device at a modulation frequency and, in response, decoupling of the modulation frequency from output power delivered by the piezoelectric-based device. In some examples, the inputs of the piezoelectric-based device are selectively switched to cause decoupling the modulation frequency from output power delivered by the piezoelectric-based device and/or cause operation of the piezoelectric-based device without spurious mode operation.
Claims21
A method for use with a piezoelectric-based device including a resonator, the method comprising
- selectively switching inputs of the piezoelectric-based device at a modulation frequency, including causing a short across terminals of the resonator, and, in response, decoupling the modulation frequency from output power delivered by the piezoelectric-based device.
A method comprising:
- selectively switching inputs of a piezoelectric-based device including a resonator, at a modulation frequency and, in response, decoupling the modulation frequency from output power delivered by the piezoelectric-based device, wherein the piezoelectric-based device operates without detrimentally effecting operation efficiency over a maximum load range specified for the piezoelectric-based device while the modulation frequency overlaps with one or more spurious mode frequency regions.
An apparatus comprising:
- a piezoelectric-based device;
- and a logic circuit to selectively switch inputs of the piezoelectric-based device at a modulation frequency and, in response, decouple the modulation frequency from output power delivered by the piezoelectric-based device for a resonant period.
A method comprising:
- selectively switching inputs of a piezoelectric-based device at a frequency in a frequency range that intersects with a spurious mode region of the piezoelectric-based device to cause current circulation in the piezoelectric-based device while avoiding spurious mode operation of the piezoelectric-based device.
An apparatus comprising:
- a piezoelectric-based device;
- and
- a logic circuit to selectively switch inputs of the piezoelectric-based device at a frequency in a frequency range that intersects with a spurious mode region of the piezoelectric-based device while avoiding spurious mode operation of the piezoelectric-based device.
Dependencies are inferred from the claim text.