System and method for controlling power factor and power converter employing the same
US6034513A · kind A · utility
45Cited by
7References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1997 |
| Grant date | Mar 7, 2000 |
| Priority date | — |
| Expiry date | Apr 2, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power factor controller, a method of controlling power factor and a power converter employing either the controller or the method. The controller includes: (1) a ramp circuit that senses an output voltage of a converter being controlled and generates an intermediate waveform that rises as a function of a magnitude of the output voltage and (2) a drive circuit, coupled to the ramp circuit, that senses a current in the converter and causes the intermediate waveform to fall at a time that is a function of a magnitude of the current, the drive circuit generating a drive signal for the converter from the intermediate waveform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.