# US 11,109,623 B2 · Driver circuit for electronic cigarette and electronic cigarette > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,109,623 B2 - Document ID: US11109623B2 - Status: Granted - Kind: B2 - Application number: 16/264,316 - Filed: 2019-01-31 - Published: 2019-05-30 - Granted: 2021-09-07 - Earliest claimed: 2016-08-10 - Assignees: Joyetech Europe Holding GmbH - Applicants: Joyetech Europe Holding GmbH - Inventors: Weihua Qiu - Web page: https://patentgrep.com/patent/US11109623B2 ## CPC - A24F 40/50: Control or monitoring - A24F 40/40: Constructional details, e.g. connection of cartridges and battery parts - H02M 3/1582: {Buck-boost converters (H02M3/1584 takes precedence)} - H02M 1/0006: {Arrangements for supplying an adequate voltage to the control circuit of converters} - A24F: SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES (inhaling appliances for medical purposes, shaped like cigars, cigarettes or pipes A61M15/06) - 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 driver circuit for electronic cigarettes includes an MCU, a power source, a first sampling circuit, a second sampling circuit, and a buck-boost driver circuit electrically connected to the MCU, the boosting circuit and MCU are respectively electrically connected the power source. The buck-boost driver circuit comprises a first half bridge drive circuit and a second half bridge drive circuit respectively connected to the MCU. One end of the first sampling circuit is electrically connected to an input terminal of the first half bridge drive circuit, through which the power source supplies power to the first half bridge drive circuit; the other end of the first sampling circuit is electrically connected to the MCU; one end of the second sampling circuit is electrically connected to the output terminal of the second half bridge drive circuit, and the other end of the second sampling circuit is electrically connected to the MCU. ## Claims ### Claim 1 A driver circuit for electronic cigarettes, comprising: an MCU; a power source; a first sampling circuit; a second sampling circuit, and a buck-boost driver circuit electrically connected to the MCU, a boosting circuit and MCU are respectively electrically connected the power source; the buck-boost driver circuit comprises a first half bridge drive circuit and a second half bridge drive circuit respectively electrically connected to the MCU, the first half bridge drive circuit is electrically connected to the second half bridge drive circuit through an inductor; one end of the first sampling circuit is electrically connected to an input terminal of the first half bridge drive circuit, through which the power source supplies power to the first half bridge drive circuit; the other end of the first sampling circuit is electrically connected to the MCU; one end of the second sampling circuit is electrically connected to the output terminal of the second half bridge drive circuit, and the other end of the second sampling circuit is electrically connected to the MCU. ### Claim 2 (depends on 1) The driver circuit according to claim 1, wherein the driver circuit further comprises the boosting circuit, the first half bridge drive circuit comprises a first half bridge driving chip, two first N-type MOS transistors, the second half bridge drive circuit comprises a second bridge driving chip and two second N-type MOS transistors; the first half bridge driving chip and the second half bridge driving chip are respectively electrically connected to the MCU; the first half bridge driving chip and the second half bridge driving chip are further respectively electrically connected to the output terminal of the boosting circuit; the output terminal of the first half bridge driving chip is respectively electrically connected to two first N-type MOS transistors, one of the first N-type MOS transistors is electrically connected to the power source; the output terminal of the second half-bridge driving chip is respectively electrically connected to two second N-type MOS transistors, an output terminal of one of the second N-type MOS transistor supplies a voltage to a load, the first N-type MOS transistors connected in series and the second N-type MOS transistors connected in series are electrically connected together through the inductor. ### Claim 3 (depends on 2) The driver circuit according to claim 2, wherein the model of the first half bridge driving chip and the model of the second half bridge driving chip are the same. ### Claim 4 (depends on 2) The driver circuit according to claim 2, wherein the first N-type MOS transistors and the second N-type MOS transistors are the same model of MOS transistors. ### Claim 5 (depends on 1) The driver circuit according to claim 1, wherein a model of the inductor is MS1004-R68M. ### Claim 6 (depends on 1) The driver circuit according to claim 1, wherein the driver circuit further comprises voltage stabilizing circuit, the voltage stabilizing circuit is respectively electrically connected to the MCU and power source. ### Claim 7 (depends on 2) The driver circuit according to claim 2, wherein the model of the first half bridge driving chip and the model of the second half bridge driving chip are both ADP3110A. ### Claim 8 (depends on 2) The driver circuit according to claim 2, wherein the model of the first N-type MOS transistors and the model of the second N-type MOS transistors are SIRA04DP. ### Claim 9 An electronic cigarette comprising: a driver circuit, the driver circuit comprises: a MCU; a power source; a first sampling circuit; a second sampling circuit, and a buck-boost driver circuit electrically connected to the MCU, a boosting circuit and MCU are respectively electrically connected the power source; the buck-boost driver circuit comprises a first half bridge drive circuit and a second half bridge drive circuit respectively electrically connected to the MCU, the first half bridge drive circuit is electrically connected to the second half bridge drive circuit through an inductor; one end of the first sampling circuit is electrically connected to an input terminal of the first half bridge drive circuit, through which the power source supplies power to the first half bridge drive circuit; the other end of the first sampling circuit is electrically connected to the MCU; one end of the second sampling circuit is electrically connected to the output terminal of the second half bridge drive circuit, and the other end of the second sampling circuit is electrically connected to the MCU. ### Claim 10 (depends on 9) The electronic cigarette according to claim 9, wherein the driver circuit further comprises the boosting circuit, the first half bridge drive circuit comprises a first half bridge driving chip, two first N-type MOS transistors, the second half bridge drive circuit comprises a second bridge driving chip and two second N-type MOS transistors; the first half bridge driving chip and the second half bridge driving chip are respectively electrically connected to the MCU; the first half bridge driving chip and the second half bridge driving chip are further respectively electrically connected to the output terminal of the boosting circuit; the output terminal of the first half bridge driving chip is respectively electrically connected to two first N-type MOS transistors, one of the first N-type MOS transistors is electrically connected to the power source; the output terminal of the second half-bridge driving chip is respectively electrically connected to two second N-type MOS transistors, an output terminal of one of the second N-type MOS transistor supplies a voltage to a load, the first N-type MOS transistors connected in series and the second N-type MOS transistors connected in series are electrically connected together through the inductor. ### Claim 11 (depends on 10) The electronic cigarette according to claim 10, wherein the model of the first half bridge driving chip and the model of the second half bridge driving chip are the same. ### Claim 12 (depends on 10) The electronic cigarette according to claim 10, wherein the first N-type MOS transistors and the second N-type MOS transistors are the same model of MOS transistors. ### Claim 13 (depends on 9) The electronic cigarette according to claim 9, wherein a model of the inductor is MS1004-R68M. ### Claim 14 (depends on 9) The electronic cigarette according to claim 9, wherein the driver circuit further comprises voltage stabilizing circuit, the voltage stabilizing circuit are respectively electrically connected to the MCU and power source. ### Claim 15 (depends on 10) The electronic cigarette according to claim 10, wherein the model of the first half bridge driving chip and the model of the second half bridge driving chip are both ADP3110A. ### Claim 16 (depends on 10) The electronic cigarette to claim 10, wherein the model of the first N-type MOS transistors and the model of the second N-type MOS transistors is SIRA04DP. ### Claim 17 A driver circuit for electronic cigarettes, comprising: an MCU; a power source; a first sampling circuit; a second sampling circuit, and a buck-boost driver circuit electrically connected to the MCU, a boosting circuit and MCU are respectively electrically connected the power source; the buck-boost driver circuit comprises a first half bridge drive circuit and a second half bridge drive circuit respectively electrically connected to the MCU, the first half bridge drive circuit is electrically connected to the second half bridge drive circuit through an inductor; one end of the first sampling circuit is electrically connected to the power source; the other end of the first sampling circuit is electrically connected to the MCU; one end of the second sampling circuit is electrically connected to the second half bridge drive circuit, and the other end of the second sampling circuit is electrically connected to the MCU. ### Claim 18 (depends on 17) The driver circuit according to claim 17, wherein the first half bridge drive circuit comprises a first half bridge driving chip and two first N-type MOS transistors, the second half bridge drive circuit comprises a second bridge driving chips and two second N-type MOS transistors; one end of the first half bridge driving chip is electrically connected to the MCU, the other end of the first half bridge driving chip is respectively electrically connected to the first N-type MOS transistors; one end of the second half bridge driving chip is electrically connected to the MCU, the other end of the second half bridge driving chip is respectively electrically connected to the second N-type MOS transistors. ### Claim 19 (depends on 18) The driver circuit according to claim 18, wherein the driver circuit further comprises the boosting circuit, the first half bridge driving chip and the second half bridge driving chip are respectively electrically connected to the output terminal of the boosting circuit. ### Claim 20 (depends on 17) The driver circuit according to claim 17 wherein the driver circuit further comprises voltage stabilizing circuit, one end of the voltage stabilizing circuit is electrically connected to the MCU, the other end of the voltage stabilizing circuit is electrically connected to the power source.