Positive-and-negative-voltage charge pump circuit, chip and communication terminal
US12191765B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2023 |
| Grant date | Jan 7, 2025 |
| Priority date | — |
| Expiry date | Jun 27, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/008
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A positive-and-negative-voltage charge pump circuit, comprising a clock generation module, a positive-voltage charge pump module, a transient enhancement module, and a negative-voltage charge pump module. The positive-voltage charge pump module generates a positive voltage according to a clock signal output by the clock generation module, and the transient enhancement module is used to sample the positive voltage and a power supply voltage, and convert same into currents for comparison, such that the negative-voltage charge pump module provides a switchable input voltage according to a comparison result. The negative-voltage charge pump module can quickly and reliably establish a negative voltage according to a clock signal output by the clock generation module, thereby improving the speed and efficiency of the negative-voltage charge pump module generating the negative voltage. Further disclosed are an integrated circuit chip, which comprises the positive-and-negative-voltage charge pump circuit, and a communication terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.