Absolute value current-sensing circuit for step-down DC-to-DC converters with integrated power stage
US9709608B2 · kind B2 · utility
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4References
14Claims
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Inventor
Key dates
| Filing date | May 8, 2015 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Sep 25, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A system for measuring an output current of a DC-to-DC converter with a transistor power stage includes a voltage measuring circuit and an impedance. The voltage measuring circuit, which is connected to the output of the power stage of the DC-to-DC converter, measures an average voltage drop on impedances of the transistors of the power stage. The impedance, which is connected to an output of the voltage measuring circuit, reproduces the impedances of the transistors of the power stage and is traversed by a scaled version of the current output of the voltage measuring circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.