Power apparatus
AssigneeFujitsu Limited
InventorFujio Kurokawa
Life of this patent
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Abstract
A power apparatus includes a power circuit configured to receive an input voltage and generate an output voltage, a memory, and a processor coupled to the memory and the processor configured to calculate an integral value of an error between the output voltage and a target voltage of the power circuit, calculate a duty ratio based on the integral value, the power circuit being controlled according to the calculated duty ratio so that the output voltage becomes the target voltage, calculate a slope of the integral value with respect to an output current of the power circuit, and generate a first warning signal when the calculated slope exceeds a first warning threshold in a case where the calculated slope is different from an initial value.
Claims12
A power apparatus comprising:
- a power circuit configured to receive an input voltage and generate an output voltage;
- a memory;
- and
- a processor coupled to the memory and the processor configured to:
- calculate an integral value of an error between the output voltage and a target voltage of the power circuit;
- calculate a duty ratio based on the integral value, the power circuit being controlled according to the calculated duty ratio so that the output voltage becomes the target voltage;
- calculate a slope of the integral value with respect to an output current of the power circuit;
- and
- generate a first warning signal when the calculated slope exceeds a first warning threshold in a case where the calculated slope is different from an initial value.
A non-transitory computer-readable recording medium storing a program that causes a computer to execute a procedure, the procedure comprising:
- calculating an integral value of an error between an output voltage and a target voltage of a power circuit configured to receive an input voltage and generate the output voltage;
- calculating a duty ratio based on the integral value, the power circuit being controlled according to the calculated duty ratio so that the output voltage becomes the target voltage;
- calculating a slope of the integral value with respect to an output current of the power circuit;
- and
- generating a first warning signal when the calculated slope exceeds a first warning threshold in a case where the calculated slope is different from an initial value.
Dependencies are inferred from the claim text.