Switching power supply current sensing, zero-crossing detection and overvoltage protection
US12184198B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 25, 2022 |
| Grant date | Dec 31, 2024 |
| Priority date | — |
| Expiry date | Feb 5, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control circuit for a switching power supply, can include: a sampling circuit configured to obtain an inductor current and a drain-source voltage of a main power transistor in a power stage circuit, in order to generate a sampling signal; where the control circuit generates an inductor current sampling signal according to the sampling signal during an on-period of the main power transistor; and where during an off-period of the main power transistor, the control circuit generates a zero-crossing signal of the inductor current and an overvoltage signal of an output voltage of the switching power supply according to the sampling signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.