Backup energy storage module with selectable charge storage elements for providing backup power to a load
First Claim
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1. A backup energy storage module comprising:
- a plurality of charge storage elements, each charge storage element operable to be charged to a backup voltage; and
control circuitry operable to;
monitor a supply voltage that provides power to a load;
determine when the supply voltage falls below a threshold level;
select a first charge storage element to provide power to the load;
determine when the backup voltage on the first charge storage element falls to a reference level; and
select a second charge storage element to provide power to the load if the supply voltage remains below the threshold level.
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Abstract
A backup energy storage module is disclosed including a plurality of charge storage elements, each charge storage element operable to be charged to a backup voltage. The backup energy storage module further includes control circuitry operable to monitor a supply voltage that provides power to a load, determine when the supply voltage falls below a threshold level, select a first charge storage element to provide power to the load, determine when the backup voltage on the first charge storage element falls to a reference level, and select a second charge storage element to provide power to the load if the supply voltage remains below the threshold level.
21 Citations
36 Claims
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1. A backup energy storage module comprising:
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a plurality of charge storage elements, each charge storage element operable to be charged to a backup voltage; and control circuitry operable to; monitor a supply voltage that provides power to a load; determine when the supply voltage falls below a threshold level; select a first charge storage element to provide power to the load; determine when the backup voltage on the first charge storage element falls to a reference level; and select a second charge storage element to provide power to the load if the supply voltage remains below the threshold level. - 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 power device comprising:
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a regulator block operable to receive a supply voltage and provide power to a load; a backup energy storage module comprising; a plurality of charge storage elements, each charge storage element operable to be charged to a backup voltage; and control circuitry operable to; monitor the supply voltage; detect when the supply voltage falls below a threshold level; select a first charge storage element to provide power to the load; detect when the backup voltage on the first charge storage element falls to a reference level; and select a second charge storage element to provide power to the load if the supply voltage remains below the threshold level. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification