# US 2021/0242777 A1 · Deeply integrated voltage regulator architectures > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0242777 A1 - Document ID: US20210242777A1 - Status: Published application - Kind: A1 - Application number: 17/208,851 - Filed: 2021-03-22 - Published: 2021-08-05 - Earliest claimed: 2018-12-26 - Assignees: Empower Semiconductor, Inc. - Applicants: Empower Semiconductor, Inc. - Inventors: David Lidsky - Web page: https://patentgrep.com/patent/US20210242777A1 ## CPC - H02M 3/1584: {with a plurality of power processing stages connected in parallel} - H02M 3/003: {Constructional details, e.g. physical layout, assembly, wiring or busbar connections} - H02M 1/0025: {Arrangements for modifying reference values, feedback values or error values in the control loop of a converter} - H02M 3/07: using capacitors charged and discharged alternately by semiconductor devices with control electrode {, e.g. charge pumps} - H02M 3/157: with digital control - H02M 3/1586: {switched with a phase shift, i.e. interleaved} - H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P) ## Abstract A system is disclosed. The system includes a substrate, and a first chip on the substrate, where a load circuit is integrated on the first chip. The system also includes a second chip on the substrate, where a power delivery circuit is configured to deliver current to the load circuit according to a regulated voltage at a node. The power delivery circuit includes a first circuit configured to generate an error signal based at least in part on the regulated voltage, and a voltage generator including power switches configured to modify the regulated voltage according to the error signal, where the first circuit of the power delivery circuit is integrated on the first chip, and where at least a portion of the power switches of the power delivery circuit are integrated on the second chip. ## Claims ### Claim 1 A method of using a system, the method comprising: with a power delivery circuit, delivering a current to a load circuit according to a regulated voltage at a node, wherein delivering the current comprises: with a first circuit, generating an error signal based at least in part on the regulated voltage, wherein the first circuit of the power delivery circuit is integrated on a first chip, with the first circuit, transmitting the error signal to a voltage generator comprising a plurality of power switches, wherein at least a portion of the power switches are integrated on a second chip, with the voltage generator, receiving the error signal, and with the voltage generator, modifying the regulated voltage according to the error signal. ### Claim 2 (depends on 1) The method of claim 1, wherein the error signal represents a difference between the regulated voltage at the node and a reference voltage. ### Claim 3 (depends on 1) The method of claim 1, wherein the error signal is an analog voltage. ### Claim 4 (depends on 1) The method of claim 1, wherein the error signal is a digital value. ### Claim 5 (depends on 1) The method of claim 1, wherein the error signal represents a difference between the regulated voltage at the node and a reference voltage multiplied by a gain factor. ### Claim 6 (depends on 1) The method of claim 1, wherein the error signal is generated with an analog-to-digital converter of the first circuit. ### Claim 7 (depends on 1) The method of claim 1, wherein the power delivery circuit comprises a capacitor connected to the load circuit, wherein the capacitor is integrated on the first chip. ### Claim 8 (depends on 1) The method of claim 1, wherein all of the power switches of the power delivery circuit are integrated on the second chip. ### Claim 9 (depends on 1) The method of claim 1, further comprising, with a reference voltage generator, generating a reference voltage, wherein the error signal represents a difference between the regulated voltage at the node and the reference voltage, and wherein the reference voltage generator is integrated on the first chip. ### Claim 10 (depends on 1) The method of claim 1, wherein the power delivery circuit comprises: a capacitor connected to the load circuit; and one or more inductors connected to the load circuit, and wherein the power switches, the capacitor, and the one or more inductors collectively form a voltage regulator. ### Claim 11 (depends on 10) The method of claim 10, wherein the voltage regulator is multiphase. ### Claim 12 (depends on 1) The method of claim 1, wherein the load circuit is integrated on the first chip. ### Claim 13 (depends on 1) The method of claim 1, further comprising a substrate, wherein the first and second chips are on the substrate. ### Claim 14 (depends on 13) The method of claim 13, wherein the power delivery circuit comprises one or more inductors connected to the load circuit, wherein the inductors are formed on the substrate separate from the first and second chips. ### Claim 15 A method of using a system, the method comprising: delivering current at a regulated voltage to a load circuit on a first chip; with the first chip, generating an error signal based at least in part on the regulated voltage; with the first chip, transmitting the error signal to a second chip; with the second chip, receiving the error signal; and with the second chip, modifying the regulated voltage according to the error signal. ### Claim 16 (depends on 15) The method of claim 15, wherein the error signal represents a difference between the regulated voltage and a reference voltage. ### Claim 17 (depends on 16) The method of claim 16, further comprising generating the reference voltage. ### Claim 18 (depends on 15) The method of claim 15, wherein the load circuit is integrated on the first chip. ### Claim 19 (depends on 15) The method of claim 15, wherein the first and second chips are on a substrate. ### Claim 20 (depends on 19) The method of claim 19, wherein one or more inductors are connected to the load circuit, wherein the inductors are formed on the substrate spaced apart from the first and second chips.