Direct driver voltage to ramp signal generation
US10734981B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 22, 2019 |
| Grant date | Aug 4, 2020 |
| Priority date | — |
| Expiry date | Oct 22, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45551
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method for generating a periodic ramp waveform may include in a sampling phase of each period of operation of a ramp-generation circuit, sampling a reference voltage onto a sampling capacitor. The method may also include in a transfer phase of each period of operation of the ramp-generation circuit: discharging the reference voltage from the sampling capacitor through at least one resistor to generate a current and generating the periodic ramp waveform by integrating the current with at least one integrating capacitor, wherein a duration of the transfer phase is significantly smaller than a time constant defined by a capacitance of the sampling capacitor and a resistance of the at least one resistor, such that the reference voltage discharges linearly from the sampling capacitor as a function of time during the transfer phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.