Low pass filter, switch control circuit, driving system, chip and method
US11303197B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2021 |
| Grant date | Apr 12, 2022 |
| Priority date | — |
| Expiry date | Mar 5, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A low-pass filter, a switching control circuit, a driving system, a chip and methods are disclosed. The low-pass filter performs digital differential-integral process on a voltage of an acquired analog signal and a predefined reference voltage to generate differential-integral signals, accumulates a count of the differential-integral signals, and convert the result to an analog signal. By performing differential-integral process accumulating a count of the differential-integral signals, a low-pass filtered signal is obtained in a way that solves the problem of low integrity of circuits in conventional driving systems, reduces the complexity of external circuits for such driving systems and increases their circuit stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.