The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 2026
Filed:
Aug. 11, 2023
Switching drivers with capacitive voltage generation operable in different capacitor biasing regimes
Cirrus Logic International Semiconductor Ltd., Edinburgh, GB;
Ross C. Morgan, Bathgate, GB;
Cirrus Logic Inc., Austin, TX (US);
Abstract
This application relates to switching drivers which receive a supply voltage that can vary in use. An output stage switches a driver output node between switching voltages with a controlled duty-cycle and is operable in different driver modes in which the switching voltages are different in the different driver modes. A capacitive voltage generator is operable to generate a switching voltage used in one of the driver modes. The switching driver is operable a first regime, in which a capacitor of the voltage generator is biased to a capacitor voltage with a magnitude greater than the input supply voltage, or a second regime, where the biasing of the capacitor is different, such that the capacitor voltage magnitude has a ratio to the input supply voltage with a lower value than in the first regime. The regime is controlled based on the magnitude of the supply voltage and/or the capacitor voltage.
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