Low noise controller for pulse width modulated converters
US5687067A · kind A · utility
13Cited by
6References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 1995 |
| Grant date | Nov 11, 1997 |
| Priority date | — |
| Expiry date | May 30, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/44
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A controller for supplying a switching drive voltage signal to a semiconductor power switch includes a wave-shaper circuit that generates a piece wise linear (PWL) waveform that slows the rate of change of the drive voltage supplied to the control electrode of the semiconductor power switch. As a result, the radiated electromagnetic interference generated by the apparatus can be appreciably reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.