Control circuit and control method for switching regulator and switching regulator with the same
US10110124B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 1, 2017 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | May 1, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/15
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control circuit for a switching regulator can include: an ON signal generator that generates an ON signal; an OFF signal generator that generates a first control signal according to an input voltage and an output voltage of the switching regulator; an on time regulator that generates an adjustment signal according to a switching signal and the first control signal; and a logic circuit configured to generate an off signal according to the first control signal, and to generate the switching signal according to the ON signal and the OFF signal, where the on time of the first switch is regulated according to the off time of the first switch when the off time of the first switch is less than the reference time, in order to regulate a duty cycle of the switching signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.