High- and Low-Power Power Supply with Standby Power Saving Features
First Claim
1. A power supply to provide power for an electrical device, comprising:
- an input port to receive an input signal;
an output port coupled to the electrical device to provide an output signal;
a first power converter to convert the received input signal to a first electrical signal having a first voltage level;
a second power converter to convert the first electrical signal from the first power converter to a second electrical signal having a second voltage level, and provide the second electrical signal to the output port as the output signal; and
a circuit to selectively bypass the second power converter and provide the first electrical signal from the first power converter to the output port as the output signal.
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Accused Products
Abstract
A power supply for providing power to an electrical device is described. The power supply converts a received input signal to a first electrical having a first voltage level at a first power converter. The power supply additionally converts the first electrical signal to a second electrical signal having a second voltage level at a second power converter, to provide the second electrical signal having the second voltage level to an output port. The power supply includes a circuit to selectively bypass the second power converter and provide the first electrical signal having the first voltage level from the first power converter to the output port. The first power converter may include one or more switches that may be disabled to disconnect power from the first power converter for additional standby power saving features.
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Citations
20 Claims
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1. A power supply to provide power for an electrical device, comprising:
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an input port to receive an input signal; an output port coupled to the electrical device to provide an output signal; a first power converter to convert the received input signal to a first electrical signal having a first voltage level; a second power converter to convert the first electrical signal from the first power converter to a second electrical signal having a second voltage level, and provide the second electrical signal to the output port as the output signal; and a circuit to selectively bypass the second power converter and provide the first electrical signal from the first power converter to the output port as the output signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of operating a power supply to supply power to a load device, the method comprising:
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receiving power at a first voltage level; converting the power at the first voltage level to a power at a second voltage level and providing the power at the second voltage level to the output port of the power supply; and selectively bypassing providing the power at the second voltage level to the output port and providing the power at the first voltage level to the output port of the power supply.
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20. A method of operating a power supply comprising an AC input, an AC-DC power converter, and a DC-DC power converter, the method comprising:
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receiving AC power; determining that a desired voltage of a first electrical device to be powered is within a first range of voltage levels provided by the AC-DC power converter; in response to the determination that the desired voltage of the first electrical device is within the first range; programming the AC-DC power converter to convert the received AC power to DC power having a first voltage level corresponding to the desired voltage of the first electrical device; and providing the DC power having the first voltage level to the first electrical device; determining that a desired voltage of a second electrical device to be powered is within a second range of voltage levels available from the DC-DC power converter; and in response to the determination that the desired voltage of the second electrical device is within the second range of voltage levels; converting the received AC power to DC power using the AC-DC power converter; programming the DC-DC power converter to convert the DC power from the AC-DC power converter to DC power having a second voltage level corresponding to the desired voltage of the second device; and providing the DC power having the second voltage level to the second electrical device.
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Specification