US 12,082,506 B2
Driving circuit and driving method
Zhiwei Xu, Zhejiang (CN); Chiqing Fang, Zhejiang (CN); and Chen Zhao, Zhejiang (CN)
Assigned to SILERGY SEMICONDUCTOR TECHNOLOGY HANGZHOU LTD, Zhejiang (CN)
Filed by SILERGY SEMICONDUCTOR TECHNOLOGY (HANGZHOU) LTD, Zhejiang (CN)
Filed on May 20, 2021, as Appl. No. 17/325,922.
Claims priority of application No. 202010430909.6 (CN), filed on May 20, 2020.
Prior Publication US 2021/0367132 A1, Nov. 25, 2021
Int. Cl. H10N 30/80 (2023.01); B06B 1/02 (2006.01); H02J 7/00 (2006.01); H02M 3/07 (2006.01); H10N 30/20 (2023.01)
CPC H10N 30/802 (2023.02) [B06B 1/0207 (2013.01); H02J 7/00 (2013.01); H02J 7/007182 (2020.01); H02M 3/07 (2013.01); H10N 30/20 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A driving circuit for driving a piezoelectric load, wherein the driving circuit comprises:
an energy-storage capacitor;
a charging circuit; and
a discharging circuit, wherein
the energy-storage capacitor is coupled between the piezoelectric load and the charging circuit;
the charging circuit is configured to receive an input voltage to charge the energy-storage capacitor during a first operation interval of an operation period, so that a power supply voltage signal provided to the piezoelectric load in the first operation interval corresponds to a reference voltage in a first interval; and
the discharging circuit is configured to discharge electricity from at least the piezoelectric load during a second operation interval of the operation period, so that the power supply voltage signal in the second operation interval corresponds to the reference voltage in a second interval.