Control circuit for switching regulator, switching regulator and electronic equipment using the control circuit
US8779738B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 8, 2011 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | Dec 15, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/156
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention improves the voltage regulation rate of the switching regulator in lag control. A divided output voltage divided by the first resistor and the second resistor is input to a first polarity input terminal of a comparator. A driver is used for controlling a switching transistor and a synchronous rectified transistor according to an output pulse of the comparator. A feedback circuit is used for outputting a switching signal to the reverse input terminal of the comparator according to the output pulse, wherein the switching signal is used for switching two voltage levels between the input voltage and a ground voltage. The error amplifier is used for amplifying an error between the divided output voltage and a first reference voltage and generating a second reference voltage to output to a second polarity input terminal of the comparator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.