METHOD AND APPARATUS FOR POWERING A HIGH CURRENT SYSTEM FROM A RESISTIVE ELECTRICAL STORAGE DEVICE
First Claim
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1. An apparatus comprising:
- an energy storage device having an equivalent series resistance coupled to a power supply node; and
a first capacitor having an equivalent series resistance substantially lower than the equivalent series resistance of the energy storage device, wherein in a first mode of the apparatus, the first capacitor is operative to receive charge from the power supply node, in a second mode of the apparatus, the first capacitor is operative to deliver current to a load, and in a third mode of the apparatus, the power supply node is operative to deliver a second current to the load, the second current being substantially less than the first current.
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Abstract
An apparatus includes an energy storage device having an equivalent series resistance coupled to a power supply node. The apparatus includes a first capacitor having an equivalent series resistance substantially lower than the equivalent series resistance of the energy storage device. In a first mode of the apparatus, the first capacitor is operative to receive charge from the power supply node. In a second mode of the apparatus, the first capacitor is operative to deliver current to a load. In a third mode of the apparatus, the power supply node is operative to deliver a second current to the load. The second current is substantially less than the first current.
33 Citations
27 Claims
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1. An apparatus comprising:
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an energy storage device having an equivalent series resistance coupled to a power supply node; and a first capacitor having an equivalent series resistance substantially lower than the equivalent series resistance of the energy storage device, wherein in a first mode of the apparatus, the first capacitor is operative to receive charge from the power supply node, in a second mode of the apparatus, the first capacitor is operative to deliver current to a load, and in a third mode of the apparatus, the power supply node is operative to deliver a second current to the load, the second current being substantially less than the first current. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method comprising:
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storing energy in an energy storage device having an equivalent series resistance; during a first time period, charging a first capacitor to a first voltage level, the first capacitor having an equivalent series resistance substantially less than the equivalent series resistance of the energy storage device; during a second time period, delivering a first current from the first capacitor to a load; and during a third time period, delivering a second current to the load, the second current being substantially less than the first current. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. An apparatus comprising:
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at least one terminal; and a circuit operative to generate a first control signal on the at least one terminal to enable charging of a capacitor with charge from a power supply node, wherein the circuit is further operative to disable the charging of the capacitor and generate a second control signal on the at least one terminal to enable current delivery from the capacitor to a load after the capacitor is charged to a first voltage, and wherein the circuit is further operative to disable current delivery from the capacitor to thereby enable delivery of a second current to the load, the second current being substantially less than the current delivered to the load from the capacitor. - View Dependent Claims (23, 24, 25, 26, 27)
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Specification