Driver circuitry and operation
US12155380B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2023 |
| Grant date | Nov 26, 2024 |
| Priority date | — |
| Expiry date | Mar 22, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0045
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
This application relates to methods and apparatus for driving a transducer connected between two output nodes in a bridge-tied-load configuration. A driver receives first and second supply voltages and has charge pumps that generate respective first and second boosted voltages. The driver is operable in a first driver mode in which each output node is modulated between the first and second supply voltage; a second driver mode in which one output nodes is modulated between the first and second supply voltages and the other output node is modulated between either the first boosted voltage and the first supply voltage or between the second supply voltage and the second boosted voltage; and a third driver mode in which one of the output nodes is modulated between the first supply voltage and the first boosted voltage and the other output node is modulated between the second supply voltage and the second boosted voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.