Systems and methods for measuring inductor current in a switching DC-to-DC converter
US9853539B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 2014 |
| Grant date | Dec 26, 2017 |
| Priority date | — |
| Expiry date | Feb 18, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0009
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switch control circuit may be utilized for a sequence of switching events occurring in an order of a first event, a second event, a third event, and a fourth event: the first event to activate the first switch and deactivate the second switch wherein an inductor current increases during the first event and has a positive value at an end of the first event, the second event to deactivate the first switch and activate the second switch wherein the switch control circuit maintains the current above zero during the second event, the third event to activate the first switch and deactivate the second switch, and the fourth event to deactivate the first switch and activate the second switch wherein the current decreases to a value below zero at an end of the fourth event and when the current reaches zero, a zero crossing time point is defined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.