Method of regulating the supply voltage of a load and related voltage regulator
US6894471B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 2003 |
| Grant date | May 17, 2005 |
| Priority date | — |
| Expiry date | Jun 5, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/156
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The method is for regulating the supply voltage of a load via a switching voltage regulator having an inductor driven by at least a power switch for delivering current to an output capacitor having a certain parasitic series resistance, connected between the output node of the regulator and ground and to an electric load eventually connected in parallel to the output capacitor. The method includes establishing a reference voltage, generating a comparison signal as the sum of a first voltage signal proportional to the current circulating in the inductor and of a second voltage signal depending on the difference between the output voltage and the reference voltage and on the first voltage signal. The comparison signal is compared with at least a threshold for generating a logic signal that switches between an active state and an inactive state and viceversa each time that the threshold is crossed, and the turn on or the turn off of the switch is controlled as a function of the state of the logic signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.