Providing resilient power to a system
First Claim
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1. A method comprising:
- charging a back-up battery using a standby low voltage from a standby rail of a main power supply of a system; and
using the standby low voltage from the standby rail of the main power supply to charge the back-up battery when the main power supply and the system are off and alternating current (AC) mains are attached and active, and using a non-standby low voltage of the main power supply to charge the back-up battery when the main power supply and the system are on, wherein the system has standby capability.
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Abstract
In one embodiment, the present invention includes a resilient power supply having a charger to charge a battery with a low voltage and to provide back-up battery power to a system; and a main power supply to provide a plurality of voltages for operation of the system. The resilient power supply may be used to discharge the battery into the main power supply upon loss of alternating current (AC) power in the system.
35 Citations
15 Claims
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1. A method comprising:
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charging a back-up battery using a standby low voltage from a standby rail of a main power supply of a system; and using the standby low voltage from the standby rail of the main power supply to charge the back-up battery when the main power supply and the system are off and alternating current (AC) mains are attached and active, and using a non-standby low voltage of the main power supply to charge the back-up battery when the main power supply and the system are on, wherein the system has standby capability. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus comprising:
a resilient power supply to provide back-up battery power to a system having standby capability, the resilient power supply having a charger to charge a battery with a first low voltage received from a standby rail of a main power supply, wherein the resilient power supply is to receive the first low voltage when the main power supply is off and alternating current (AC) mains are attached and active, otherwise the charger is to charge the battery with a second low voltage received from the main power supply when the main power supply is on, and wherein the main power supply is to provide a plurality of voltages for operation of the system. - View Dependent Claims (9, 10, 11, 12, 15)
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13. An apparatus comprising:
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a first power supply to receive an incoming alternating current signal and having a first converter including a plurality of outputs to provide a plurality of low voltages to a circuit board of a system powered by the first power supply, the first power supply having a node coupled between a rectifier and the first converter, and the first power supply to couple a plurality of status and control signals between the first power supply and the circuit board; and a second power supply coupled to receive a first low voltage and a second low voltage of the plurality of low voltages from the first power supply, the second power supply including a charger to charge a battery and a second converter to receive a low voltage signal from the battery and provide a high voltage signal to the node of the first power supply, wherein the second power supply is to charge the battery with the first low voltage when the first power supply is on and to charge the battery with the second low voltage from a standby rail of the first power supply when the first power supply and the system are off and the alternating current signal is attached and active. - View Dependent Claims (14)
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Specification