DC power supply device and lighting system using same
US9800169B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2017 |
| Grant date | Oct 24, 2017 |
| Priority date | — |
| Expiry date | Jan 4, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A DC power supply device includes a rectifier circuit, a conversion circuit and a control circuit. Conversion circuit includes a first capacitor, a first series circuit, a second series circuit, a third series circuit, a second diode and a Zener diode. First series circuit includes a first inductor and a switching element connected in series with each other. Second series circuit includes a second capacitor and a second inductor connected in series with each other. Third series circuit includes a first diode and a third capacitor connected in series with each other. First series circuit is electrically connected between both ends of first capacitor. Second series circuit is electrically connected in parallel with switching element. A cathode of Zener diode is connected with a connection point of first inductor and second capacitor. Zener diode has a Zener voltage larger than an output voltage of conversion circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.