Charge-pump circuit adaptable to TDDI
US10802648B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2019 |
| Grant date | Oct 13, 2020 |
| Priority date | — |
| Expiry date | Oct 15, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/07
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A charge-pump circuit includes a clock generator that generates a clock signal; a sensing waveform generator that generates a sensing signal; a first diode having a cathode electrically connected to a predetermined low voltage; a first capacitor having a first plate electrically coupled to receive the clock signal, and a second plate electrically connected to an anode of the first diode; a second diode having a cathode electrically connected to the second plate of the first capacitor; and a second capacitor having a first plate electrically coupled to receive the sensing signal, and a second plate electrically connected to an anode of the second diode at an output node. The clock signal being generated in a charge-pump period alternates in time with the sensing signal being generated in a touch-sensing period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.