Maximum power detection and automatic gain control for capacitive class-D amplifiers
US12362713B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2021 |
| Grant date | Jul 15, 2025 |
| Priority date | — |
| Expiry date | Mar 11, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G2201/103
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A system includes a charge pump having an input coupled to a first voltage and an output at a second voltage, the second voltage greater than the first voltage. The system also includes an amplifier having a first input, a second input, and a third input, the first input coupled to the output of the charge pump, the second input coupled to the first voltage, the third input coupled to an input signal, the amplifier having an amplified output signal. The system also includes a maximum power detector coupled to the amplifier, the maximum power detector operable to determine whether the amplified output signal has reached a threshold output level and to reduce a power of the amplified output signal responsive to the determination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.