Title:
DRIVER DEVICE, WATER TREATMENT DEVICE, AND MOTOR DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/079878
Kind Code:
A1
Abstract:
A driver device (1) has a pulse generation circuit (5) that in one cycle generates over a first period (T1) a pulse waveform (Spl) that has a first voltage level, and generates over a second period (T2) a pulse waveform that has a second voltage level. Where the first period is a minimum ON duration (Tminon), the control circuit (2) executes a power supply mode for as long as the minimum ON duration, switches to an attenuation mode in the case of an arrival state where an output current (Iout) has arrived at a current setting value (Iset) at a point in time where the minimum ON duration ended, and skips switching to the power supply mode at the end point of the second period.
Inventors:
HASHIMOTO HIROKI (JP)
OKADA MITSUO (JP)
OKADA MITSUO (JP)
Application Number:
PCT/JP2022/036739
Publication Date:
May 11, 2023
Filing Date:
September 30, 2022
Export Citation:
Assignee:
ROHM CO LTD (JP)
International Classes:
H02P8/12; H02M7/48
Foreign References:
| JP2014053997A | 2014-03-20 | |||
| JP2011078301A | 2011-04-14 | |||
| JP2008521351A | 2008-06-19 |
Attorney, Agent or Firm:
SANO PATENT OFFICE (JP)
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