Abstract: The present application relates to a circuit arrangement for sensing a current. The circuit arrangement comprises a current sense circuit configured to cause the sense current through a sense transistor, wherein the sense current is representative of a load current through a load transistor. The current sense circuit comprises a differential difference amplifier with a first differential input terminal pair coupled across the drain electrode and the source electrode of the load transistor and a second differential input terminal pair coupled across the drain electrode and the source electrode of the sense transistor. The current sense circuit is operable to force the same voltage difference value across the drain electrode and the source electrode of the load transistor as across the drain electrode and the source electrode of the sense transistor.

Abstract: The present application relates to a circuit arrangement for sensing a current. The circuit arrangement comprises a current sense circuit configured to cause the sense current through a sense transistor, wherein the sense current is representative of a load current through a load transistor. The current sense circuit comprises a differential difference amplifier with a first differential input terminal pair coupled across the drain electrode and the source electrode of the load transistor and a second differential input terminal pair coupled across the drain electrode and the source electrode of the sense transistor. The current sense circuit is operable to force the same voltage difference value across the drain electrode and the source electrode of the load transistor as across the drain electrode and the source electrode of the sense transistor.

Abstract: The power switching apparatus includes an output arranged to provide a sense current depending on a load current, a power switching device, a sense device, and a difference amplification device. The difference amplification device includes a first and a second amplifier input, at least one amplifier output connected to a current sense feedback loop arranged to reduce a difference of potentials between the first and the second amplifier input. A terminal of the power switching device and a terminal of the sense device are connected to an input and another terminal of the power switching device and a second terminal of the sense device are coupled to a first cross-coupling switching module.

Abstract: A power switching apparatus having a mechanism for improving current sense accuracy is provided. The power switching apparatus includes an output arranged to provide a sense current depending on a load current, a power switching device, a sense device, and a difference amplification device. The difference amplification device includes a first and a second amplifier input, at least one amplifier output connected to a current sense feedback loop arranged to reduce a difference of potentials between the first and the second amplifier input. A terminal of the power switching device and a terminal of the sense device are connected to an input and another terminal of the power switching device and a second terminal of the sense device are coupled to a first cross-coupling switching module.