CURRENT MEASUREMENT CIRCUIT

According to the invention, a current measurement circuit for providing a measurement signal for a controller for controlling a switching of power switches of a power converter comprises a first current sensing circuit for sensing a first bidirectional current representative of a current through a f...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Rongyuan, Li, Robert, Pohlmann, Frank, Schafmeister
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:According to the invention, a current measurement circuit for providing a measurement signal for a controller for controlling a switching of power switches of a power converter comprises a first current sensing circuit for sensing a first bidirectional current representative of a current through a first power switch of the power converter. The first current sensing circuit is being adapted to provide a first sensing signal indicative of the first bidirectional current. The current measurement circuit further comprises a second current sensing circuit for sensing a second bidirectional current representative of a current through a second power switch of the power converter. The second current sensing circuit is adapted to provide a second sensing signal indicative of the second bidirectional current. In addition, the current measurement circuit comprises a switching circuit being adapted to provide a first measurement signal based on the first sensing signal, the second sensing signal and a polarity signal representative of a polarity of an input voltage of the power converter, wherein the first measurement signal is indicative of the first bidirectional current during a first time interval and indicative of the second bidirectional current during a third time interval.