Power supplying circuit for drive of switching power supply and switching power supply
US10298129B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2018 |
| Grant date | May 21, 2019 |
| Priority date | — |
| Expiry date | Jun 5, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0006
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switching power supply using a power switch, and a drive circuit therefor are disclosed. This circuit includes a power supplying capacitor with distal end connected with control terminal of the power switch and proximal end to receive a voltage regulation signal generated by a first control signal and a pulse signal. The power switch may be turned on or off, depending on whether the first control signal is placed in a first state during which the voltage regulation signal is in pulse state with the voltage at said distal end made effective, or in a second state during which the voltage regulation signal is in low-level state with the voltage at said distal end made ineffective. A continuous drive and power supplying for the switching power supply is realized, and the capacitance of said capacitor is small, thereby facilitating circuit integration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.