Highly integrated switching power supply and control circuit
US11056977B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2019 |
| Grant date | Jul 6, 2021 |
| Priority date | — |
| Expiry date | Dec 12, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/33523
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A highly integrated switching power supply and a control circuit are provided. The switching power supply includes a transformer, the transformer comprises a primary winding, a secondary winding and an auxiliary winding, and the control circuit includes: a power switch transistor, configured to control disconnection and conduction of the primary winding of the transformer; a primary current sampling module, configured to sample a current of the primary winding to generate a sampling voltage; and a voltage stabilization control module, configured to turn on or turn off the power switch transistor according to an input voltage, an output voltage of the switching power supply system, and the sampling voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.