Inductive current simulation circuit of switching circuit, inductive current simulation method of switching circuit, and switched-mode power supply
US11777409B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 7, 2021 |
| Grant date | Oct 3, 2023 |
| Priority date | — |
| Expiry date | Feb 24, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An inductive current simulation circuit of a switching circuit, an inductive current simulation method of the switching circuit, and a switched-mode power supply are provided. The inductive current simulation method includes the following steps: based on an error amplification circuit, performing, by the error amplification circuit, an error amplification on a first sampling signal representing a current of a synchronous rectifier and a second sampling signal representing an inductive current simulation signal when the synchronous rectifier is turned on to obtain an error amplification signal; and reconstructing an inductive current according to the error amplification signal when the synchronous rectifier is turned on and a first current when a main power transistor is turned on to obtain the inductive current simulation signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.