High frequency switched mode converter
US5161098A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 9, 1991 |
| Grant date | Nov 3, 1992 |
| Priority date | — |
| Expiry date | Sep 9, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K1/181
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A small, lightweight, efficient, very low cost AC adaptor for consumer electronics applications is realized by combining a switching regulator integrated circuit along with a leadframe adapted to mount the switching regulator integrated circuit off-center, a single-sided printed circuit board and high frequency ferrite cores. These components are assembled onto a substrate, such as a printed circuit board, by means of well-known, low-cost automatic insertion assembly machines. The novel structural aspects result in formation of a transformer from the leadframe and traces on the printed circuit board. The power supply resulting from this assembly method may be small enough to be molded into the plug portion of a standard AC power cord.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.