ADAPTIVE CHARGE LEVELING IN A DATA STORAGE DEVICE
First Claim
1. A charge leveler configured to be coupled between an external power supply and a data storage device, the charge leveler comprising:
- a current limiter couplable to receive an input current from the external power supply, the current limiter configured to provide a limited input current at no more than a pre-determined level; and
a charge reservoir couplable in parallel with an output of the current limiter to supplement the limited input current to the data storage device when the pre-determined level is exceeded, and to receive surplus limited current from the current limiter to replenish the charge reservoir with the surplus current when the data storage device draws less current than the pre-determined level.
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Accused Products
Abstract
A charge leveler coupled between an external power supply and a data storage device includes a current limiter to receive an input current from the external power supply and to provide a limited input current at no more than a pre-determined level. A charge reservoir couplable in parallel with an output of the current limiter supplements the limited input current when the pre-determined level is exceeded. The charge reservoir is replenished with surplus limited current when the data storage device draws less than the pre-determined level. A boost assist regulator monitors a requested current from the data storage device, and initiates operation of the charge reservoir to supplement the limited input current when the requested current exceeds the limited input current.
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Citations
20 Claims
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1. A charge leveler configured to be coupled between an external power supply and a data storage device, the charge leveler comprising:
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a current limiter couplable to receive an input current from the external power supply, the current limiter configured to provide a limited input current at no more than a pre-determined level; and a charge reservoir couplable in parallel with an output of the current limiter to supplement the limited input current to the data storage device when the pre-determined level is exceeded, and to receive surplus limited current from the current limiter to replenish the charge reservoir with the surplus current when the data storage device draws less current than the pre-determined level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A charge leveler system, comprising:
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a controller coupleable to an external power supply; a storage component coupled to the controller; and a charge leveler coupled to the controller, the charge leveler comprising; a current limiter couplable to receive an input current from the external power supply, the current limiter configured to output a limited current at no more than a pre-determined level; and a charge reservoir coupleable to the current limiter output to supplement the limited current when the pre-determined level is exceeded, and to replenish the charge reservoir with surplus limited current in excess of current requested by the data storage device when the pre-determined level is not exceeded. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method for charge leveling an input current provided to a data storage device from an external power supply, the method comprising:
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limiting the input current to no more than a pre-determined level of the external power supply; and adding a boost current supplied by a charge reservoir and a boost assist regulator to the limited input current. - View Dependent Claims (18, 19, 20)
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Specification