Multi-functional Bi-directional Communication and Bias Power Architecture for Power Supply Control
First Claim
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1. A system for connecting to a load device, comprising:
- a communication line for transmitting data information to and from the load device;
a bias power source coupled to the communication line and configured to supply bias power on the communication line, the bias power source operable to activate a communication device on the load device, wherein the load device is in a first power state; and
a processing unit coupled to the communication line, the processing unit configured to receive power information from the communication device of the load device to place the load device in a second power state based on the received power information.
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Abstract
Connecting a load device to a power supply is described. A connection to a load device is detected on a communication link, where the load device is in a first power state. In response to detecting the connection to the load device, a bias power source is enabled to supply bias power on the communication link to the load device. Power information of the load device is received over the communication link. Power is supplied to the load device, based on the power information, to place the load device in a second power state.
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Citations
22 Claims
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1. A system for connecting to a load device, comprising:
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a communication line for transmitting data information to and from the load device; a bias power source coupled to the communication line and configured to supply bias power on the communication line, the bias power source operable to activate a communication device on the load device, wherein the load device is in a first power state; and a processing unit coupled to the communication line, the processing unit configured to receive power information from the communication device of the load device to place the load device in a second power state based on the received power information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for connecting to a load device, comprising:
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detecting a connection to the load device on a communication link, wherein the load device is in a first power state; in response to detecting the connection to the load device, enabling a bias power source to supply bias power on the communication link to the load device; in response to supplying the bias power on the communication link, receiving power information of load device over the communication link; and supplying power to the load device based on the power information to place the load device in a second power state. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method for providing power to one or more load devices, comprising:
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receiving power from a first power domain to convert the power from a first voltage state to a second voltage state; providing the power of the second voltage state to a second power domain; providing an isolation boundary between the first power domain and the second power domain; detecting a connection to the one or more load devices across the isolation boundary and on a communication link, wherein the one or more load devices is in a first power state; in response to detecting the connection to the one or more load devices, generating bias power and supplying the bias power on the communication link to the one or more load devices; in response to supplying the bias power on the communication link, receiving power information of the one or more load devices over the communication link; and supplying power to the one or more load devices based on the power information to place the one or more load devices in a second power state. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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Specification