SERIES AND PARALLEL HYBRID SWITCHED CAPACITOR NETWORKS FOR IC POWER DELIVERY
First Claim
1. A power delivery network to deliver power to one or more integrated circuits at a plurality of voltages, the network comprising:
- a switched capacitor divider (SCD) comprising;
a plurality of FETs configured with drain terminals coupled with source terminals to be in series across a voltage input; and
a plurality of capacitors connected across the voltage input and coupled with the plurality of FETs to divide the voltage input into a plurality of first voltage outputs; and
a plurality of linear regulators, each of the plurality of linear regulators coupled with one of the plurality of first voltage outputs to regulate a second voltage output.
1 Assignment
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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.
47 Citations
15 Claims
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1. A power delivery network to deliver power to one or more integrated circuits at a plurality of voltages, the network comprising:
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a switched capacitor divider (SCD) comprising; a plurality of FETs configured with drain terminals coupled with source terminals to be in series across a voltage input; and a plurality of capacitors connected across the voltage input and coupled with the plurality of FETs to divide the voltage input into a plurality of first voltage outputs; and a plurality of linear regulators, each of the plurality of linear regulators coupled with one of the plurality of first voltage outputs to regulate a second voltage output. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A power delivery network to power an integrated circuit, comprising:
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a voltage input; and a series switch bridge, wherein the series switch bridge further comprises;
a first pair of switches connected in series with a second pair of switches across the voltage input, wherein each of the first and second pairs of switches includes a first switch having a drain terminal coupled with a source terminal of a second switch with gate terminals coupled together, and wherein the first pair of switches is configured to switch between a low state and a high state within a switching cycle while the second pair of switches is configured to switch to a state opposite the first pair;a balancing capacitor coupled with a node between the switches of the first pair and coupled with a node between the switches of the second pair; and a voltage output coupled with a node between the first pair of switches and the second pair of switches, the voltage output to be coupled with the integrated circuit to be powered. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification