LC filter including coupled inductors for reducing ripple in switching power supplies
US10320280B2 · kind B2 · utility
0Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2017 |
| Grant date | Jun 11, 2019 |
| Priority date | — |
| Expiry date | Nov 6, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2210/025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An LC filter circuit reduces an output voltage ripple of a switching power supply using coupled inductors in combination with a capacitor to form a notch filter, and aligning the notch region of the notch filter with a ripple frequency of the switching power supply to attenuate the frequency region of the fundamental ripple frequency by a larger amount than other frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.