Switched mode power supply including a flyback converter with primary side control
US8947894B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2013 |
| Grant date | Feb 3, 2015 |
| Priority date | — |
| Expiry date | Jun 29, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0009
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for controlling a flyback converter are presented. The flyback converter includes a transformer, a semiconductor switch coupled to a primary winding of the transformer, a current measurement circuit coupled to the semiconductor switch, a diode coupled in series to a secondary winding of the transformer, and a controller. The controller is configured to receive a feedback voltage, a reference signal, and the measured primary current and generate a control signal for the semiconductor switch dependent on the feedback voltage, the reference signal, and the measured primary current. The semiconductor switch switches on and off cyclically in CCM operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.