Selective enablement of power supply sections for improving efficiency
First Claim
1. A power supply system for powering a load, comprising:
- a first stage including at least one alternating current (AC) to direct current (DC) conversion section configured for converting AC from an AC input to DC at an upper DC voltage value;
a second stage in electronic communication with the first stage, the second stage including at least one DC to DC regulation section, wherein each DC to DC regulation section is configured for regulating at least a portion of the DC at the upper DC voltage value to DC at a lower DC voltage value and supplying the lower DC voltage value to a DC output;
wherein the first stage includes more than one AC to DC conversion section or the second stage includes more than one DC to DC regulation section; and
a controller for selectively enabling a selected combination of the at least one AC to DC conversion section and the at least one DC to DC regulation section according to a value of the load.
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Accused Products
Abstract
Systems and methods are disclosed for maximizing the efficiency of a power supply according to the value of a load to be powered. One embodiment provides a power supply system including a first and second stage. The first stage has at least one AC to DC conversion section for converting an AC input to DC at an upper DC voltage value. The second stage has at least one DC to DC regulation section for converting at least a portion of the DC at the upper DC voltage value to DC at a lower DC voltage value and supplying the lower DC voltage value to a DC output. One or both of the first and second stages includes more than one section operating in parallel. A controller selectively enables a selected combination of the AC to DC conversion sections and the DC to DC regulation sections according to an expected or actual value of the load.
22 Citations
20 Claims
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1. A power supply system for powering a load, comprising:
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a first stage including at least one alternating current (AC) to direct current (DC) conversion section configured for converting AC from an AC input to DC at an upper DC voltage value; a second stage in electronic communication with the first stage, the second stage including at least one DC to DC regulation section, wherein each DC to DC regulation section is configured for regulating at least a portion of the DC at the upper DC voltage value to DC at a lower DC voltage value and supplying the lower DC voltage value to a DC output; wherein the first stage includes more than one AC to DC conversion section or the second stage includes more than one DC to DC regulation section; and a controller for selectively enabling a selected combination of the at least one AC to DC conversion section and the at least one DC to DC regulation section according to a value of the load. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of powering a load, comprising:
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obtaining a nominal load value of a device to be coupled to a power supply output; obtaining an efficiency curve for each of a plurality of available power supply sections installed within the power supply; selecting a combination of the available power supply sections having sufficient collective power capacity to meet the nominal load value; and operating the selected power supply sections in parallel to convert a portion of an AC input to a DC output. - View Dependent Claims (17, 18, 19, 20)
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Specification