Communicating fault indications between primary and secondary controllers in a secondary-controlled flyback converter
US10951107B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2019 |
| Grant date | Mar 16, 2021 |
| Priority date | — |
| Expiry date | Jun 27, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Communicating fault indications between primary and secondary controller in a secondary-controlled flyback converter is described. In one embodiment, an apparatus includes a primary-side field effect transistor (FET) coupled to a flyback transformer coupled to the primary-side FET, and a primary-side controller coupled to the flyback transformer. The primary-side controller is configured to receive a signal from a secondary-side controller across a galvanic isolation barrier, apply a pulse signal to the primary-side FET in response to the signal to turn-on and turn-off the primary-side FET, communicate information to the secondary-side controller across the flyback transformer by varying a first pulse width of the pulse signal to a second pulse width and applying the pulse signal with the second pulse width to the primary-side FET.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.