Systems and methods for generating a feedback current in a DC-DC converter
US10348198B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2017 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Aug 30, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Systems, apparatuses, and methods for generating a stable output voltage for one or more components by checking feedback information for an entire clock period are described. In various embodiments, a power converter generates an output voltage for one or more components. When the load current drawn by the one or more components changes, an inductor current of a low pass filter and monitored by a current sense amplifier also changes. The clock period is divided into a high phase and a low phase with one of the phases being a relatively short phase. During the relatively short phase, the current sense amplifier does not have sufficient time to measure feedback information. Instead of selecting a voltage output of the current sense amplifier, control logic selects a voltage output of a voltage generator, which emulates a voltage ramp with a slope of the inductor current during the relatively short phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.