Series and parallel hybrid switched capacitor networks for IC power delivery
First Claim
1. A power delivery network for an integrated circuit, the network comprising:
- a hybrid parallel power conversion stage including a converter of a first type configured in parallel with a converter of a second type, the converter of the first type and the converter of the second type coupled to a same input voltage and to a same output circuit to provide a regulated output current to power the integrated circuit, wherein the converter of the first type is a switched capacitor converter and the converter of the second type is configured as a current source; and
a current controller coupled with at least the converter of the second type to increase a portion of the regulated output current provided by the converter of the second type relative to the switched capacitor converter in response to an increase in load current of the output circuit.
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Accused Products
Abstract
Series switches for power delivery. A regulator operated as a current source is arranged in parallel with a switched capacitor divider. A switched capacitor divider is configured in series with a plurality of linear regulators with each regulating one of a plurality of voltage outputs from the switched capacitor divider. In another embodiment, a series switch bridge has a first pair of switches connected in series with a second pair of switches across a voltage input, each switch within a pair of switches is switched in-phase with the other while the first pair of switches is switched out of phase with the second pair of switches. A balancing capacitor is coupled across one switch in both the first and second pair to be in parallel when either of the pair of switches is closed to reduce a charge imbalance between the switches.
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Citations
21 Claims
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1. A power delivery network for an integrated circuit, the network comprising:
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a hybrid parallel power conversion stage including a converter of a first type configured in parallel with a converter of a second type, the converter of the first type and the converter of the second type coupled to a same input voltage and to a same output circuit to provide a regulated output current to power the integrated circuit, wherein the converter of the first type is a switched capacitor converter and the converter of the second type is configured as a current source; and a current controller coupled with at least the converter of the second type to increase a portion of the regulated output current provided by the converter of the second type relative to the switched capacitor converter in response to an increase in load current of the output circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A power delivery network for an integrated circuit, the network comprising:
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a hybrid parallel power conversion stage including a converter of a first type configured in parallel with a converter of a second type, the converter of the first type and the converter of the second type coupled to a same input voltage and to a same output circuit to provide a regulated output current to power the integrated circuit, wherein the converter of the first type is a switched capacitor converter and the converter of the second type is configured as a current source; an efficiency tracker to determine a feed-forward reference current based on a predetermined control relationship between the output current provided by the switched capacitor converter and by the converter of the second type for an input current to the hybrid parallel power conversion stage; and a current controller, coupled with the efficiency tracker and at least the converter of the second type, to increase a portion of the output current provided by the converter of the second type relative to that provided by the switched capacitor converter based on at least a change in the feed-forward reference current responsive to an increase in the output circuit load current. - View Dependent Claims (14, 15, 16, 17)
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18. A method of providing a regulated output current to power an integrated circuit, the method comprising:
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receiving a same voltage input at each of a switched capacitor converter and a convertor of a second type; supplying an output current, with at least one of the switched capacitor converter and a convertor of a second type, to a same output circuit driving a load; determining a feed-forward reference current based on a predetermined control relationship between the output current supplied by the switched capacitor converter and by the converter of the second type for an input current to the hybrid parallel power conversion stage; and increasing a portion of the output current provided by the converter of the second type relative to that provided by the switched capacitor converter based on at least a change in the feed-forward reference current in response to an increase in the load. - View Dependent Claims (19, 20, 21)
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Specification