Title:
SWITCHING POWER SUPPLY CIRCUIT AND SWITCHING POWER SUPPLY DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/029230
Kind Code:
A1
Abstract:
The present invention obtains an output voltage by rectifying and smoothing a voltage generated by an operation that switches between a high-side transistor and a low-side transistor. The switching operation is performed on the basis of voltage information corresponding to the output voltage and coil current information generated through a current sensing operation. The switching frequency can be set to a first frequency or a second frequency (< the first frequency). For the second frequency, for a portion of the period from when the most recent current sensing operation was performed until the next current sensing operation is performed, coil current information is generated by adding pseudo current information to information about the current detected by the most recent current sensing operation.
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Inventors:
HASHIGUCHI SHINGO (JP)
FUKUSHIMA SHUN (JP)
FUKUMOTO YOSUKE (JP)
FUKUSHIMA SHUN (JP)
FUKUMOTO YOSUKE (JP)
Application Number:
PCT/JP2023/023585
Publication Date:
February 08, 2024
Filing Date:
June 26, 2023
Export Citation:
Assignee:
ROHM CO LTD (JP)
International Classes:
H02M3/155
Foreign References:
| JP2021090272A | 2021-06-10 | |||
| JP2019092356A | 2019-06-13 | |||
| JP2010063276A | 2010-03-18 | |||
| JP2006067792A | 2006-03-09 | |||
| US10637357B1 | 2020-04-28 |
Attorney, Agent or Firm:
SANO PATENT OFFICE (JP)
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