Title:
BOOSTING CONVERTER
Document Type and Number:
WIPO Patent Application WO/2019/163669
Kind Code:
A1
Abstract:
Provided is a boosting converter capable of appropriately protecting a low-rated switch from an overcurrent. A boosting converter (10) is provided with a plurality of reactors (11a to 11c), switches (S1L to S3L) connected to second ends of each reactor, rectifying elements (S1H to S3H) which allow current to flow in a direction directed from the reactors toward an output side, and prevent current flow flowing in the reverse direction, and a control device (30) which controls switching of the switches in order to boost a direct current voltage. The rated current of a low-rated switch (S1L), which is at least one of the switches and is a portion of the switches, is lower than the rated current of high-rated switches (S2L, S3L), which are the remaining switches. The control device (30) controls switching of the low-rated switch (S1L) and the high-rated switches (S2L, S3L) in such a way that the degree of protection of the low-rated switch (S1L) to an overcurrent is greater than the degree of protection of the high-rated switches (S2L, S3L) to an overcurrent.
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Inventors:
MURAKAMI TATSUYA (JP)
TANABE RYOTA (JP)
IYASU SEIJI (JP)
TANABE RYOTA (JP)
IYASU SEIJI (JP)
Application Number:
PCT/JP2019/005564
Publication Date:
August 29, 2019
Filing Date:
February 15, 2019
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H02M3/155
Foreign References:
| JP4844696B2 | 2011-12-28 | |||
| JP2015106934A | 2015-06-08 | |||
| JP2012253202A | 2012-12-20 | |||
| JP2016092907A | 2016-05-23 |
Attorney, Agent or Firm:
YAMADA, Tsuyoshi (JP)
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