SMPS with adaptive COT control and method thereof
US9467045B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2014 |
| Grant date | Oct 11, 2016 |
| Priority date | — |
| Expiry date | Apr 15, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0022
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A SMPS has a switching circuit and a controller. The switching circuit has an input terminal and an output terminal, and also includes a switch and an inductor, wherein the switching circuit regulates an output voltage at the output terminal based on an input voltage at the input terminal by controlling a switching action of the switch. The controller generates a switching control signal to control the switch, where the switching control signal transits from a first state to a second state when an output signal at the output terminal satisfies a predetermined condition, and the switching control signal transits from the second state to the first state after a period of time. And a switching frequency of the switch and an inductor ripple current of the inductor both vary with the input voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.