System and method for improving inductor current sensing accuracy of a DC/DC voltage regulator
US8368368B2 · kind B2 · utility
6Cited by
7References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2008 |
| Grant date | Feb 5, 2013 |
| Priority date | — |
| Expiry date | Jun 25, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0009
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The DC/DC voltage converter comprises at least one switching transistor. An inductor is connected to the at least one switching transistor. A pulse width modulation circuit generates control signals to at least one switching transistor responsive to a current control signal. A current sensor connected in parallel with the inductor senses current passing through the inductor. The sensor comprises a resistor and an NTC capacitor connected in series with the resistor. Circuitry for monitoring the voltage across the NTC capacitor generates the current control signal responsive to the monitored voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.