POWER SUPPLY SYSTEM AND CONTROL METHOD THEREOF
First Claim
1. A power supply system, comprising:
- at least two power supplies, the power supplies electrically connected to a load share bus, electrically coupled in parallel to output electrical power to a load, each power supply dynamically operating in either an active mode or a sleep mode according to the loading status, one of the power supplies being a determining-stage power supply of the power supplies operating in the active mode, each power supply comprising;
a control unit, electrically coupled to the load share bus, generating a wake-up signal or a sleep signal according to a load share signal from the load share bus, the load share signal indicating the loading status of the power supply system, wherein when the operation of the power supply changes from the sleep mode to the active mode, the control unit controls the power supply to operate from the sleep mode to the active mode according to the wake-up signal from a previous stage power supply, wherein when the operation of the power supply changes from the active mode to the sleep mode, the control unit generates the sleep signal;
a first communication port, coupled to the control unit; and
a second communication port, coupled to the control unit;
wherein the first communication port of each power supply is coupled to the second communication port of the previous stage power supply, the second communication port of each power supply is coupled to the first communication port of the next stage power supply to establish a cascading communication architecture;
wherein the first communication port is for receiving the wake-up signal from the second communication port of the previous stage power supply and outputting the sleep signal to the second communication port of the previous stage power supply, the second communication port is for receiving the sleep signal from the first communication port of the next stage power supply and outputting the wake-up signal to the first communication port of the next stage power supply.
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Abstract
The instant disclosure provides a power supply system and control method thereof. The power supply system comprises at least two power supplies electrically coupled in parallel. The control unit of the power supply generates a wake-up signal or a sleep signal according to the loading status. A second communication port of each power supply is coupled to a first communication port of the next stage power supply to establish cascading communications architecture. The first communication port receives a wake-up signal from the second communication port of the previous stage power supply and outputs a sleep signal to the second communication port of the previous stage power supply. The second communication port receives the sleep signal from the first communication port of the next stage power supply and outputs the wake-up signal to the first communication port of the next stage power supply.
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Citations
20 Claims
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1. A power supply system, comprising:
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at least two power supplies, the power supplies electrically connected to a load share bus, electrically coupled in parallel to output electrical power to a load, each power supply dynamically operating in either an active mode or a sleep mode according to the loading status, one of the power supplies being a determining-stage power supply of the power supplies operating in the active mode, each power supply comprising; a control unit, electrically coupled to the load share bus, generating a wake-up signal or a sleep signal according to a load share signal from the load share bus, the load share signal indicating the loading status of the power supply system, wherein when the operation of the power supply changes from the sleep mode to the active mode, the control unit controls the power supply to operate from the sleep mode to the active mode according to the wake-up signal from a previous stage power supply, wherein when the operation of the power supply changes from the active mode to the sleep mode, the control unit generates the sleep signal; a first communication port, coupled to the control unit; and a second communication port, coupled to the control unit; wherein the first communication port of each power supply is coupled to the second communication port of the previous stage power supply, the second communication port of each power supply is coupled to the first communication port of the next stage power supply to establish a cascading communication architecture; wherein the first communication port is for receiving the wake-up signal from the second communication port of the previous stage power supply and outputting the sleep signal to the second communication port of the previous stage power supply, the second communication port is for receiving the sleep signal from the first communication port of the next stage power supply and outputting the wake-up signal to the first communication port of the next stage power supply. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A control method of a power supply system, adapted for the power supply system comprising at least two power supplies, the power supplies electrically connected to a load share bus, electrically coupled in parallel to output electrical power to a load, each power supply dynamically operating in either an active mode or a sleep mode according to the loading status, one of the power supplies being a determining-stage power supply of the power supplies operating in the active mode, each power supply comprising a first communication port and a second communication port, the first communication port of each power supply coupled to the second communication port of the previous stage power supply, the second communication port of each power supply coupled to the first communication port of the next stage power supply to establish a cascading communication architecture, the control method comprising:
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assigning the power supplies to provide electrical power to the load according to a load share signal of the load share bus; controlling the determining-stage power supply of the power supplies operating in the active mode to output a wake-up signal through the second communication port to the first communication port of the next stage power supply for controlling the operation of the next power supply from the sleep mode to the active mode when the load share signal is greater than a first threshold; and controlling the determining-stage power supply of the power supplies operating in the active mode to operate in the sleep mode and output a sleep signal through the first communication port to the second communication port of the previous stage power supply when the load share signal is less than a second threshold. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification