Charge pump with current mode output power throttling
US11152906B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2020 |
| Grant date | Oct 19, 2021 |
| Priority date | — |
| Expiry date | Sep 4, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/507
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A system may include a charge pump configured to boost an input voltage of the charge pump to an output voltage greater than the input voltage, a current mode control loop for current mode control of a power amplifier powered by the output voltage of the charge pump, and a controller configured to, in a current-limiting mode of the controller, control an output power of the charge pump to ensure that an input current of the charge pump is maintained below a current limit, control the power amplifier by placing the power amplifier into a high-impedance mode during the current-limiting mode, and control state variables of a loop filter of the current mode control loop during the current-limiting mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.