Switching power supply apparatus
US6646848B2 · kind B2 · utility
47Cited by
5References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2002 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | May 3, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0009
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An overcurrent protection circuit of a switching power supply apparatus, wherein a rectangular wave voltage is formed from an input voltage by the ON/OFF operation switching means, and an output voltage is formed by smoothing the rectangular wave voltage by using an inductance device and a capacitor, restricts overcurrent by detecting the peak current of a current flowing through the switching means and by using an input voltage Vin, an output voltage Vout and a voltage proportional to the ON/OFF ratio D of the switching means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.