Comparator, control circuit of switching regulator using the same, switching regulator, and electronic equipment
US8766616B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 9, 2011 |
| Grant date | Jul 1, 2014 |
| Priority date | — |
| Expiry date | Aug 6, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a comparator with novel output logic. The comparator makes a comparison between an input voltage and a reference voltage. A differential amplifying circuit includes a first input transistor with a control terminal applied with the reference voltage and a second input transistor with a control terminal applied with the input voltage. An output section receives an export signal of the differential amplifying circuit and outputs an output signal that corresponds to the export signal and denotes a result of the comparison. A feedback circuit receives the output signal of the output section, and if the output signal is changed from a first level to a second level, the output signal feeds back to the differential amplifying circuit or the output section while it is restored to the negated level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.