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US 10,120,429 B2Granted
Current control circuit and a method therefor
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsSverker Sander, Kjell-Arne Remnås
Life of this patent
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Abstract
A method and a current control circuit 100 therefor. The method for a current control circuit 100 comprising determining 201 a state of the current control circuit 100, select 202 a first mode of operation 203 if the determined state is a first state indicative of a hot plug-in of the input terminal 101 to a connectable DC voltage bus. The method further comprises selecting 202 a second mode of operation 204 if the determined state is a second state different from the first state. The method further comprises controlling 205 the output current using the selected mode of operation.
Claims20
A current control circuit comprising:
- an input terminal configured to be connected to a DC voltage bus;
- an output terminal;
- detection circuitry configured to detect a parameter of the current control circuit;
- switching circuitry connected to the input terminal via current detection circuitry and further connected to the output terminal via an output circuit, wherein the switching circuitry is configured to provide a controllable resistance;
- processing circuitry connected to the current detection circuitry and further connected to the detection circuitry, wherein the processing circuitry is configured to:
- receive a first signal indicative of a current flowing from the input terminal to the output terminal,
- determine whether the current control circuit is in a first state indicative of a hot plug-in of the input terminal to the connectable DC voltage bus, wherein determining whether the current control circuit is in the first state comprises comparing a detected parameter of the switching circuitry to a predetermined threshold,
- select between i) a first mode of operation of operation and ii) a second mode of in dependence on whether the current control circuit is determined to be in the first state indicative of the hot-plug-in of the input terminal to the connectable DC voltage bus such that the processing circuitry selects the first mode of operation as a result of determining that the current control circuit is in the first state and otherwise the processing circuitry selects the second mode of operation, and
- control an output current using the selected mode of operation.
6 more elements
A method for a current control circuit comprising:
- receiving a first signal indicative of a current flowing from an input terminal to an output terminal, the input terminal configured to be connected to a DC voltage bus;
- determining a state of the current control circuit;
- selecting a mode of operation based on said determined state of the current control circuit;
- and
- controlling an output current using the selected mode of operation, wherein
- selecting the mode of operation based on said determined state of the current control circuit comprises:
- determining whether the determined state is a first state indicative of a hot plug-in of the input terminal to the connectable DC voltage bus, wherein determining whether the current control circuit is in the first state comprises comparing a detected parameter of switching circuitry to a predetermined threshold, the switching circuitry connected to the input terminal via current detection circuitry and further connected to the output terminal via an output circuit and configured to provide a controllable resistance;
- and
- selecting between i) a first mode of operation and ii) a second mode of operation in dependence on whether the determined state is the first state indicative of the hot plug-in of the input terminal to the connectable DC voltage bus such that the first mode of operation is selected as a result of determining that the determined state is the first state and otherwise the second mode is selected.
6 more elements
A control circuit, comprising:
- an input terminal configured to be connected to a DC voltage bus;
- an output terminal;
- and
- a processor, wherein the processor is configured to:
- receive a first signal indicative of a current flowing from the input terminal to the output terminal,
- determine whether the control circuit is in a first state indicative of a hot plug-in of the input terminal to the connectable DC voltage bus, wherein determining whether the control circuit is in the first state comprises comparing a detected parameter of switching circuitry to a predetermined threshold, the switching circuitry connected to the input terminal via current detection circuitry and further connected to the output terminal via an output circuit and configured to provide a controllable resistance,
- select between i) a first mode of operation and ii) a second mode of operation in dependence on whether the control circuit is determined to be in the first state indicative of the hot plug-in of the input terminal to the connectable DC voltage bus such that the processor selects the first mode of operation as a result of determining that the control circuit is in the first state and otherwise the processor selects the second mode of operation, and
- control an output current using the selected mode of operation.
5 more elements
Dependencies are inferred from the claim text.