# US 2021/0276043 A1 · Driving device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0276043 A1 - Document ID: US20210276043A1 - Status: Published application - Kind: A1 - Application number: 16/917,873 - Filed: 2020-06-30 - Published: 2021-09-09 - Earliest claimed: 2020-03-05 - Assignees: I-Shou University - Applicants: I-Shou University - Inventors: Chun-An Cheng; Hung-Liang Cheng; Ya-Jing Chen - Web page: https://patentgrep.com/patent/US20210276043A1 ## CPC - B06B 1/0223: {for generating signals continuous in time} - B06B 2201/71: Cleaning in a tank - B06B: METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, {e.g.} FOR PERFORMING MECHANICAL WORK IN GENERAL (for particular applications, see the relevant subclasses, e.g. B07B1/40, B23Q17/12, B24B31/06; measurement of mechanical vibrations G01H; in direction finding, locating, distance or velocity measuring G01S; {generating seismic energy G01V1/02}; control of mechanical vibrations in general G05D; sound-producing devices, e.g. bells, sirens, whistles G10K, {e.g. methods or devices for transmitting, conducting, or directing sound in general G10K11/00}; generation of electrical oscillations H03B; electromechanical resonators in general H03H; electromechanical transducers {for communication techniques, e.g. microphones, speakers} H04R) ## Abstract A driving device is provided. The driving device includes a boost inductor and a resonance circuit. The boost inductor receives a first power via a first terminal of the boost inductor in a first mode and provides a second power via a second terminal of the boost inductor. The resonance circuit stores a stored electric energy from the second power in the first mode, so that the boost inductor does not provide the second power in the second mode and drives a transducer by the stored electric energy in the first mode and the second mode. ## Claims ### Claim 1 A driving device, adapted to drive a transducer, comprising: a boost inductor, configured to receive a first power via a first terminal of the boost inductor in a first mode and provide a second power via a second terminal of the boost inductor; a rectifying circuit, coupled to the second terminal of the boost inductor and configured to limit a transmission path of the second power; and a resonance circuit, coupled to the transducer and the rectifying circuit, and configured to store a stored electric energy from the second power in the first mode, so that the boost inductor does not provide the second power in a second mode and drives the transducer by the stored electric energy in the first mode and the second mode, wherein the first mode and the second mode are alternately operated. ### Claim 2 (depends on 1) The driving device according to claim 1, wherein the resonance circuit comprises: a first power switch, wherein a first terminal of the first power switch is coupled to the second terminal of the boost inductor via the rectifying circuit and a control terminal of the first power switch is configured to receive a first control signal; a second power switch, wherein a first terminal of the second power switch is coupled to a second terminal of the first power switch, a second terminal of the second power switch is coupled to a reference low potential, and a control terminal of the second power switch is configured to receive a second control signal; a series inductor, wherein a first terminal of the series inductor is coupled to the second terminal of the first power switch and a second terminal of the series inductor is coupled to one of power electrodes of the transducer; a first capacitor, wherein a first terminal of the first capacitor is coupled to the first terminal of the first power switch and a second terminal of the first capacitor is coupled to the other one of the power electrodes of the transducer; and a second capacitor, wherein a first terminal of the second capacitor is coupled to the second terminal of the first capacitor and a second terminal of the second capacitor is coupled to the reference low potential. ### Claim 3 (depends on 2) The driving device according to claim 2, wherein at least one of a work cycle of the first power switch and a work cycle of the second power switch is less than 50%. ### Claim 4 (depends on 2) The driving device according to claim 2, further comprising: a filter, configured to receive an external power and filter out noise of the external power to provide the first power. ### Claim 5 (depends on 3) The driving device according to claim 3, wherein the filter comprises: a filter inductor, wherein a first terminal of the filter inductor is used as one of power pins connected to the external power and a second terminal of the filter inductor is coupled to the first terminal of the boost inductor, wherein the second terminal of the filter inductor is used as an output terminal of the filter; and a filter capacitor, wherein a first terminal of the filter capacitor is coupled to the first terminal of the boost inductor and the second terminal of the filter inductor, a second terminal of the filter capacitor is used as the other one of the power pins connected to the external power, and the second terminal of the filter capacitor is further coupled to the second terminal of the first power switch. ### Claim 6 (depends on 2) The driving device according to claim 2, wherein the rectifying circuit comprises: a first diode, wherein a cathode of the first diode is coupled to the first terminal of the first power switch and an anode of the first diode is coupled to the second terminal of the boost inductor; and a second diode, wherein a cathode of the second diode is coupled to the anode of the first diode and an anode of the second diode is coupled to the reference low potential. ### Claim 7 (depends on 2) The driving device according to claim 2, wherein when a current value generated by the first power flowing through the boost inductor rises to a maximum current value, the resonance circuit disconnects the first power switch according to the first control signal. ### Claim 8 (depends on 7) The driving device according to claim 7, wherein in the first mode, when the current value generated by the first power flowing through the boost inductor drops to 0 A, the driving device conducts the second power switch according to the second control signal and switches from the first mode to the second mode. ### Claim 9 (depends on 7) The driving device according to claim 7, wherein in the second mode, when an electric energy stored by a parasitic capacitor of the first power switch is completely released, the driving device conducts the first power switch according to the first control signal to switch from the second mode to the first mode. ### Claim 10 (depends on 2) The driving device according to claim 2, wherein a current direction of the stored electric energy flowing through the transducer and the series inductor in the first mode is opposite to a current direction of the stored electric energy flowing through the transducer and the series inductor in the second mode.