Parallel RC current detection circuit and DC/DC converter with a parallel RC current detection circuit
US6469481B1 · kind B1 · utility
63Cited by
10References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 9, 1999 |
| Grant date | Oct 22, 2002 |
| Priority date | — |
| Expiry date | Dec 9, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An RC series circuit is provided in parallel with an inductor. The RC series circuit is comprised of a resistor and a capacitor which are connected with each other in series. A voltage across the capacitor is applied to a detection circuit. The detection circuit detects inductor current flowing through the inductor based on the applied voltage. If the inductance of the inductor, the parasitic resistance value of the inductor, the capacitance of the capacitor and the resistance value of the resistor are L, RL, Ca and Ra, respectively, the RC series circuit is designed so as to satisfy L/RL=Ca*Ra.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.