Device and method for voltage drop compensation
AssigneeSTMicroelectronics (Grenoble 2) SAS
InventorsJean Camiolo, Alexandre Pons
Life of this patent
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Abstract
The present disclosure relates to a voltage source device comprising: a voltage converter for generating a supply voltage at an output node of the voltage converter based on a feedback signal provided on a feedback line; at least one switch coupled between the output node of the voltage converter and an output terminal of the voltage source device; and at least one further switch configured to selectively couple the feedback line to: the output node of the voltage converter during a first regulation mode; and to the output terminal of the voltage source device during a second regulation mode.
Claims20
A voltage source device comprising:
- a voltage converter for generating a supply voltage at an output node of the voltage converter based on a feedback signal provided on a feedback line;
- at least one switch configured to selectively connect or isolate the output node of the voltage converter and an output terminal of the voltage source device;
- a regulation point selection circuit configured to mutually-exclusively couple the feedback line to:
- the output node of the voltage converter during a first regulation mode;
- or
- the output terminal of the voltage source device during a second regulation mode;
- a first current source configured to apply a first current to a further output terminal of the voltage source device in order to detect a cable voltage drop;
- and
- a voltage drop compensation circuit configured to generate an analog compensation signal based on a first voltage at the further output terminal.
A method of operating a voltage source device, the method comprising:
- isolating an output node of a voltage converter from an output terminal of the voltage source device via at least one switch;
- generating, by the voltage converter, a supply voltage at the output node of the voltage converter based on a feedback signal provided on a feedback line;
- coupling the output node of the voltage converter to the output terminal of the voltage source device via the at least one switch;
- coupling, by a regulation point selection circuit, the feedback line to the output node of the voltage converter, and decoupling, by the regulation point selection circuit, the feedback line from the output terminal of the voltage source device, during a first regulation mode;
- coupling, by the regulation point selection circuit, the feedback line to the output terminal of the voltage source device, and decoupling, by the regulation point selection circuit, the feedback line from the output node of the voltage converter, during a second regulation mode;
- applying, by a first current source, a first current to a further output terminal of the voltage source device in order to detect a cable voltage drop;
- and
- generating, by a voltage drop compensation circuit, an analog compensation signal based on a first voltage at the further output terminal.
Dependencies are inferred from the claim text.