Title:
DRIVER CIRCUIT AND PIEZOELECTRIC ACTUATOR
Document Type and Number:
WIPO Patent Application WO/2023/179142
Kind Code:
A1
Abstract:
The present application relates to a driver circuit and a piezoelectric actuator. The driver circuit comprises: a buck-boost circuit, the buck-boost circuit being configured, according to a voltage regulation control signal, to work in a corresponding voltage regulation mode, so as to be used for converting an input voltage into a unipolar folded signal and outputting the unipolar folded signal; a full-bridge inverter circuit, the full-bridge inverter circuit being configured, according to a polarity reversal signal, to reverse the polarity of part of the folded signal, so as to be used for unfolding the folded signal into a target drive signal and outputting the target drive signal; and a control circuit, the control circuit being configured, according to a reference signal, to generate the voltage regulation control signal and the polarity reversal signal, the reference signal corresponding to the target drive signal. The buck-boost circuit of the present application has a plurality of voltage regulation modes, and can output the unipolar folded signal according to the voltage regulation control signal when an additional compensation circuit does not need to be added, and finally, the target drive signal is output by means of the full-bridge inverter circuit.
Inventors:
YE RUI (CN)
HAN JING (CN)
HAN JING (CN)
Application Number:
PCT/CN2022/142440
Publication Date:
September 28, 2023
Filing Date:
December 27, 2022
Export Citation:
Assignee:
REALMAGIC SEMICONDUCTORS SHENZHEN CO LTD (CN)
International Classes:
H02M3/155; H02M7/5387
Foreign References:
| CN217183179U | 2022-08-12 | |||
| CN212588281U | 2021-02-23 | |||
| CN105896646A | 2016-08-24 | |||
| CN111064359A | 2020-04-24 | |||
| CN202005034U | 2011-10-05 | |||
| JP2010051111A | 2010-03-04 | |||
| CN101552554A | 2009-10-07 | |||
| CN112803941A | 2021-05-14 | |||
| CN113328638A | 2021-08-31 | |||
| JP2008228420A | 2008-09-25 |
Attorney, Agent or Firm:
SHENZHEN ZHONGYI UNION INTELLECTUAL PROPERTY AGENCY CO.,LTD. (CN)
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