Interleaved switching power supply and control method for the same
US10020738B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2017 |
| Grant date | Jul 10, 2018 |
| Priority date | — |
| Expiry date | Aug 7, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/1586
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control circuit for an interleaved switching power supply having a plurality of parallel coupled power stage circuits, can include: a feedback circuit that receives an output voltage of the interleaved switching power supply, and generates an output voltage feedback signal; a ripple generator that receives a plurality of switching control signals, and generates an AC ripple signal having a frequency that is N times a switching frequency; an adder circuit that adds the output voltage feedback signal with the AC ripple signal, and generates a superposition signal; a comparison circuit that receives the superposition signal and a reference voltage, and generates a comparison signal; and a frequency divider circuit that divides the comparison signal into a plurality of turn on control signals configured to control turn on of a plurality of main power switches in the plurality of power stage circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.