Voltage regulator having a plurality of capacitors configured to obtain a feedback voltage from a division voltage
US9164523B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 16, 2009 |
| Grant date | Oct 20, 2015 |
| Priority date | — |
| Expiry date | Jul 23, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/575
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An electronic circuit is provided. An error amplifier comprises a first input terminal coupled to a reference voltage, a second input terminal coupled to a feedback voltage, and a transistor comprises a first terminal coupled to an input voltage, a control terminal coupled to an output terminal of the error amplifier and a second terminal outputting an output voltage. A switching-capacitor circuit is coupled between the output voltage and the error amplifier and comprises a plurality of switching elements and at least first and second capacitors. The switching elements are switched by non-overlapping clocks such that the second capacitor is discharged to a bias voltage during a first period, and the first and second capacitors are connected together during a second period thereby extracting a division voltage from the output voltage to serve as the feedback voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.