Current sensing method and current sensing device, power conversion device using this current sensing device, and vehicle using this power conversion device
US7310001B2 · kind B2 · utility
2Cited by
8References
2Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 19, 2005 |
| Grant date | Dec 18, 2007 |
| Priority date | — |
| Expiry date | Aug 19, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A current sensing device for sensing current flowing through a MOSFET has a voltage divider circuit composed of a series circuit of a first resistor and a second resistor having different resistance temperature coefficients, with a voltage division ratio designed to change depending on temperature. The sensing device is connected between a source and a drain of said MOSFET. A sensing circuit takes out the source-to-drain voltage divided with the voltage divider to sense the current flowing through the MOSFET.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.