Switching power supply circuit
US8085007B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2009 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Aug 11, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/156
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switching power supply circuit, which includes: a switch; a coil serving as an energy transmitting element; and a capacitor serving as an output generation circuit that outputs, as an output voltage, the energy transmitted from the coil. The switching power supply circuit also includes an output voltage detection circuit that generates a detection signal according to the output voltage; a PNP transistor serving as a transmission circuit that outputs a transmission signal according to a value of the detection signal; and a controller that controls the switch according to the transmission signal. The switching power supply circuit further includes a diode serving as a rectifying element connected between the transmission circuit (PNP transistor) and the controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.