Abstract:
A current sensing circuit for an electronic power converter having an inductor that is not referenced to ground is configured to provide an output signal that is referenced to ground and is proportional to the current flow between the inductor and a load in an electrical power system. The current sensing circuit includes outputs associated with a voltage of the inductor, a current source circuit, a current steering circuit responsive to the voltage outputs and a level shifting circuit.
Abstract:
An apparatus includes an electrical network configured for connection to a first terminal of a semiconductor switch; a first voltage source connected to the electrical network; a second voltage source configured for connection to a second terminal of the semiconductor switch and to the first voltage source, the second voltage source includes a capacitive element configured to store electrical charge, the capacitive element receiving and storing electrical charge when the electrical network and the semiconductor switch conduct current, and the second voltage source providing a voltage based on the capacitive element, the voltage provided by the second voltage source bringing the second terminal of the semiconductor switch to a voltage that is greater than the lowest voltage that a third terminal of the semiconductor switch receives.
Abstract:
A current sensing circuit for an electronic power converter having an inductor that is not referenced to ground is configured to provide an output signal that is referenced to ground and is proportional to the current flow between the inductor and a load in an electrical power system. The current sensing circuit includes outputs associated with a voltage of the inductor, a current source circuit, a current steering circuit responsive to the voltage outputs and a level shifting circuit.