Integrated tri-state electromagnetic interference filter and line conditioning module
US9160228B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2015 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Feb 26, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/1582
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This disclosure describes systems, methods and articles of a passive EMI filter integrated with an active boost converter for low-side line transients and/or an active clipper for high-side line transients. During steady-state operation, the active circuitry is disabled so the circuit functions as a passive EMI filter. Inductive and capacitive components used in the passive EMI filter during steady-state operation may serve a dual role and become part of a boost converter when input voltage is below a low-line steady-state and, in some variations, the inductive and capacitive components may become part of a transient clipper when the input voltage is above a high-line steady-state level. The transient clipper may be implemented as a linear pass element or as a switch-mode converter (e.g., buck converter).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.