Control circuit and method for maintaining high efficiency over broard current ranges in a switching regulator circuit
US5731694A · kind A · utility
129Cited by
14References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1997 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | Feb 13, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit and method for controlling a switching voltage regulator having (1) a switch including one or more switching transistors and (2) an output adapted to supply current at a regulated voltage to a load including an output capacitor. The circuit and method generates a control signal to turn said one or more switching transistors OFF under operating conditions when the voltage at the output is capable of being maintained substantially at the regulated voltage by the charge on the output capacitor. Such a circuit and method increases the efficiency of the regulator circuit particularly at low average current levels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.