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:
Oct. 17, 2023
Filed:
Jan. 26, 2023
Cirrus Logic International Semiconductor Ltd., Edinburgh, GB;
Anthony S. Doy, Bend, OR (US);
Eric J. King, Austin, TX (US);
Cirrus Logic Inc., Austin, TX (US);
Abstract
The application describes a switched driver () for outputting a drive signal at an output node () to drive a load such as a transducer. The driver receives respective high-side and low-side voltages (VinH, VinL) defining an input voltage at first and second input nodes and has connections for first and second capacitors (H,L). A network of switching paths is configured such that each of the first and second capacitors can be selectively charged to the input voltage, the first input node can be selectively coupled to a first node (N) by a path that include or bypass the first capacitor, and the second input node can be selectively coupled to a second node (N) by a path that includes or bypasses the second capacitor. The output node () can be switched between two switching voltages at the first or second nodes. The driver is selectively operable in different operating modes, where the switching voltages are different in each of said modes.