Power supply device, power supply system, and power supply control method
First Claim
1. A power supply device comprising:
- a power supply circuit configured to supply electric power;
a signal input-and-output portion to be coupled to a sub board, the sub board including a first load configured to receive the electric power and a voltage range generation circuit configured to generate a voltage range signal indicative of a power supply voltage range of the first load; and
an arithmetic circuit configured to compute an output voltage of the power supply circuit based on the voltage range signal which is input via the signal input-and-output portion and first power supply voltage information relating to a first voltage at a first supply terminal of the first load to be supplied with the electric power,the sub board includes;
a third load configured to receive the electric power, and wherein the arithmetic circuit computes the output voltage of the power supply circuit by weighting the first power supply voltage information and third power supply voltage information in accordance with respective power supply voltage ranges of the first load and the third load, the third power supply voltage information relating to a third voltage at a third supply terminal of the third load to be supplied with the electric power.
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Accused Products
Abstract
A power supply device includes: a power supply circuit configured to supply electric power; a signal input-and-output portion to be coupled to a sub board, the sub board including a first load configured to receive the electric power and a voltage range generation circuit configured to generate a voltage range signal indicative of a power supply voltage range of the first load; and an arithmetic circuit configured to compute an output voltage of the power supply circuit based on the voltage range signal which is input via the signal input-and-output portion and first power supply voltage information relating to a first voltage at a first supply terminal of the first load to be supplied with the electric power.
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Citations
15 Claims
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1. A power supply device comprising:
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a power supply circuit configured to supply electric power; a signal input-and-output portion to be coupled to a sub board, the sub board including a first load configured to receive the electric power and a voltage range generation circuit configured to generate a voltage range signal indicative of a power supply voltage range of the first load; and an arithmetic circuit configured to compute an output voltage of the power supply circuit based on the voltage range signal which is input via the signal input-and-output portion and first power supply voltage information relating to a first voltage at a first supply terminal of the first load to be supplied with the electric power, the sub board includes;
a third load configured to receive the electric power, and wherein the arithmetic circuit computes the output voltage of the power supply circuit by weighting the first power supply voltage information and third power supply voltage information in accordance with respective power supply voltage ranges of the first load and the third load, the third power supply voltage information relating to a third voltage at a third supply terminal of the third load to be supplied with the electric power. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A power supply system comprising:
- a main board; and
a sub board, coupled to a signal input-and-output portion of the main board, including a first load, the main board includes; a power supply circuit configured to supply electric power to the first load; and an arithmetic circuit configured to compute an output voltage of the power supply circuit based on a voltage range signal and first power supply voltage information, the voltage range signal indicating a power supply voltage range of the first load and being input via the signal input-and-output portion, the first power supply voltage information relating to a first voltage at a first supply terminal of the first load to be supplied with the electric power, the sub board includes;
a third load configured to receive the electric power, and wherein the arithmetic circuit computes the output voltage of the power supply circuit by weighting the first power supply voltage information and third power supply voltage information in accordance with respective power supply voltage ranges of the first load and the third load, the third power supply voltage information relating to a third voltage at a third supply terminal of the third load to be supplied with the electric power. - View Dependent Claims (8, 9, 10, 11, 12)
- a main board; and
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13. A power supply control method comprising:
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determining whether a sub board on which a first load, a voltage range generation circuit and a third load are mounted is coupled or not, the first load configured to receive electric power from a power supply circuit, the voltage range generation circuit configured to generate a voltage range signal indicating a power supply voltage range of the first load, the third load configured to receive the electric power; obtaining, when the sub board is coupled, the voltage range signal and first power supply voltage information relating to a first voltage at a first supply terminal of the first load; computing an output voltage of the power supply circuit using the voltage range signal and the first power supply voltage information; and computing the output voltage of the power supply circuit by weighting the first power supply voltage information and third power supply voltage information in accordance with respective power supply voltage ranges of the first load and the third load, the third power supply voltage information relating to a third voltage at a third supply terminal of the third load to be supplied with the electric power. - View Dependent Claims (14, 15)
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Specification