Title:
ACTUATOR DRIVER, AND CAMERA MODULE AND ELECTRONIC DEVICE USING SAME
Document Type and Number:
WIPO Patent Application WO/2023/238672
Kind Code:
A1
Abstract:
An actuator 120 includes a movable element 124 including a magnet 122, and a plurality of voice coils L1-L3 arranged along the movement direction of the movable element 124. A controller 230 generates a control signal ctrl. A drive unit 220 drives the plurality of voice coils L1-L3 according to the control signal ctrl. A correction unit COMPi of the drive unit 220 corrects the control signal ctrl in accordance with a position detection signal PFB, which corresponds to a voice coil Li and indicates the position of the movable element 124. A driver DRi drives the corresponding voice coil Li according to the output ctrl' of the corresponding correction unit COMPi.
Inventors:
MAEDE JUN (JP)
Application Number:
PCT/JP2023/019374
Publication Date:
December 14, 2023
Filing Date:
May 24, 2023
Export Citation:
Assignee:
ROHM CO LTD (JP)
International Classes:
H02P7/025; H02P25/034
Foreign References:
| JP2019219564A | 2019-12-26 | |||
| JP2021175212A | 2021-11-01 | |||
| JP2018138984A | 2018-09-06 |
Attorney, Agent or Firm:
MORISHITA Sakaki (JP)
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