System and method for providing dynamic charge current based on maximum card power
First Claim
1. A method of operating an expansion card, comprising:
- monitoring, via a monitoring circuit of the expansion card, input power consumed by components of the expansion card receiving power from power rails that each provide power to the expansion card at a different level of voltage, wherein the input power includes power consumed by the components from each of the power rails;
when monitoring determines that the input power is below a threshold, establishing a power limit for a charging circuit of the expansion card at a value equal to the difference between the threshold and the input power;
when monitoring determines that the input power is equal to or greater than the threshold, establishing the power limit at a value equal to zero; and
establishing a current limit for the charging circuit based upon the power limit.
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Accused Products
Abstract
Aspects of the disclosure pertain to a system and method for providing dynamic charge current based on maximum expansion card power. Dynamic monitoring of overall power usage by an expansion card is performed. Based on the dynamic monitoring, power consumption of a charging circuit of the card is dynamically adjusted for maintaining the overall power consumption of the expansion card at or below a pre-determined power limit (e.g., at or below an expansion slot power limit). Further, based on the dynamic monitoring, an amount of charging current provided by a current limiting device of the charging circuit to an energy storage device of the charging circuit is dynamically adjusted.
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Citations
20 Claims
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1. A method of operating an expansion card, comprising:
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monitoring, via a monitoring circuit of the expansion card, input power consumed by components of the expansion card receiving power from power rails that each provide power to the expansion card at a different level of voltage, wherein the input power includes power consumed by the components from each of the power rails; when monitoring determines that the input power is below a threshold, establishing a power limit for a charging circuit of the expansion card at a value equal to the difference between the threshold and the input power; when monitoring determines that the input power is equal to or greater than the threshold, establishing the power limit at a value equal to zero; and establishing a current limit for the charging circuit based upon the power limit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A non-transitory computer-readable medium having computer-executable instructions for performing a method of operating an expansion card, the method comprising:
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monitoring, via a monitoring circuit of the expansion card, input power consumed by components of the expansion card receiving power from power rails that each provide power to the expansion card at a different level of voltage, wherein the input power includes power consumed by the components from each of the power rails; when monitoring determines that the input power is below a threshold, establishing a power limit for a charging circuit of the expansion card at a value equal to the difference between the threshold and the input power; when monitoring determines that the input power is equal to or greater than the threshold, establishing the power limit at a value equal to zero; establishing a current limit for the charging circuit based upon the power limit; and providing an amount of charging current from a current limiting device of the charging circuit to an energy storage device of the charging circuit based upon the current limit. - View Dependent Claims (9, 10, 11, 12, 13)
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14. An expansion card, comprising:
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a monitoring system configured for monitoring input power consumed by components of the expansion card from power rails that each provide power to the expansion card at a different level of voltage, wherein the input power includes power consumed by the components from each of the power rails; and a charging circuit connected to the monitoring system, the charging circuit including a current limiting device and also including an energy storage device that is connected to the current limiting device, wherein the current limiting device is configured for providing electrical current to charge the energy storage device, wherein when the monitoring system determines that the input power is below a threshold, it establishes a power limit for the charging circuit at a value equal to the difference between the threshold and the input power, wherein when the monitoring system determines that the input power is equal to or greater than the threshold, it establishes the power limit at a value equal to zero, and wherein the current limiting device establishes a current limit for the charging circuit based upon the power limit. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification