Method and apparatus for sharing power
First Claim
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1. A method of sharing power, comprising:
- switchably coupling and decoupling each of a plurality of power sources to provide at least a portion of power to a shared power supply, each of the power sources corresponding to one of a plurality of applications; and
adjusting the portion of power delivered by each one of the power sources to the shared power supply responsive to an amount of usage by the application corresponding to the respective power source.
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Abstract
A power sharing apparatus and method. In one embodiment, a method of sharing power includes switchably coupling and decoupling each of a plurality of power sources to deliver at least a portion of power to a shared power supply. Each of the power sources corresponds to one of a plurality of applications. The method also includes adjusting the portion of power delivered by each one of the power sources to the shared power supply responsive to an amount of usage by the application corresponding to the respective power source.
97 Citations
25 Claims
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1. A method of sharing power, comprising:
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switchably coupling and decoupling each of a plurality of power sources to provide at least a portion of power to a shared power supply, each of the power sources corresponding to one of a plurality of applications; and
adjusting the portion of power delivered by each one of the power sources to the shared power supply responsive to an amount of usage by the application corresponding to the respective power source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
increasing the portion of power delivered by one of the power sources to the shared power supply responsive to an increase in usage of a shared device coupled to be powered by the shared power supply by the application corresponding to the respective power source; and
decreasing the portion of power delivered by one of the power sources to the shared power supply responsive to a decrease in usage by the application corresponding to the respective power source.
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3. The method of sharing power described in claim 1 further comprising:
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sensing a capability to supply power of each of the power sources; and
disabling power sources from being switchably coupled and decoupled to provide power to the shared power supply if the respective capability to supply power of the respective power sources are below a threshold value.
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4. The method of sharing power described in claim 3 wherein sensing the capability to supply power of each of the power sources comprises sensing an output voltage of each one of the power sources.
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5. The method of sharing power described in claim 3 further comprising adjusting further the portion of power delivered by each one of the power sources to the shared power supply responsive to the respective sensed capability to supply power of each one of the power sources.
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6. The method of sharing power described in claim 3 further comprising controlling an amount of power drawn from the shared power supply responsive to the sensed capability to supply power of each respective one of the power sources.
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7. The method of sharing power described in claim 3 further comprising selectively limiting usage of a shared device coupled to be powered by the shared power supply by the respective applications corresponding to the respective power sources having sensed capability to supply power below the threshold value.
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8. The method of sharing power described in claim 1 further comprising electrically isolating the plurality of power sources and the shared power supply with an energy transfer element having a plurality of primary windings and a secondary winding.
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9. The method of sharing power described in claim 1 further comprising regulating an output of the shared power supply by generating a regulation signal with a switched mode power supply included in the shared power supply.
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10. The method of sharing power described in claim 1 further comprising regulating an output of the shared power supply by adjusting the portion of power delivered by each one of the power sources to the shared power supply responsive to the output of the shared power supply.
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11. The method of sharing power described in claim 9 further comprising multiplexing the regulation signal to switchably couple and decouple each of the plurality of power sources to provide said at least portion of power to the shared power supply.
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12. An apparatus, comprising:
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a plurality of power sources;
a plurality of switches, each one of the switches coupled to a corresponding one of the power sources;
a shared power supply switchably coupled to be delivered power by the plurality of power sources through the plurality of switches; and
a control circuit coupled to each one of the switches, the control circuit coupled to receive a plurality of usage signals, each one of the usage signals corresponding to one of the power sources, the control circuit to switch each one of the switches responsive to the plurality of usage signals. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
a multiplexor coupled to receive a pulse train signal, the multiplexor to selectively couple the pulse train to each of the switches in response to a select signal; and
a multiplexor control circuit coupled to receive the usage signals and the pulse train signal, the multiplexor control circuit coupled to generate the select signal responsive to the usage signals and the pulse train signal.
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20. The apparatus of claim 19 wherein the pulse train signal is a regulation signal generated by a switched mode power supply included in the shared power supply.
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21. An apparatus, comprising:
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a plurality of first means for providing power, each one of the plurality of first means corresponding to one of a plurality of applications;
second means for supplying power to a device to be used by the plurality of applications;
third means for powering the second means with the plurality of first means; and
fourth means for apportioning an amount of power supplied by each one of the plurality of first means to the second means responsive to an amount of usage by each respective one of the plurality of applications. - View Dependent Claims (22, 23, 24, 25)
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Specification