Title:
POWER SUPPLY DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/026943
Kind Code:
A1
Abstract:
A power converter (60) includes at least one set of upper- and lower-arm switching elements (61 to 66) connected in series between a power supply line (Lp) and a ground line (Lg), and converts and supplies DC power of a battery (15) to a load (80). Pull-up resistors (Ruu, Ruv, Ruw) are connected between the power supply line (Lp) and inter-arm connection points (Nu, Nv, Nw) that are connection points of the upper- and lower-arm switching elements. Pull-down resistors (Rdu, Rdv, Rdw) are connected between the inter-arm connection points (Nu, Nv, Nw) and a ground. A dark current cut switch (56, 58) is provided between a reverse connection protection relay (52) and the pull-up resistors (Ruu, Ruv, Ruw), and is turned off when driving of the power supply device (10) is stopped, and blocks a dark current flowing via the pull-up resistors and the pull-down resistors to the ground.
Inventors:
MATSUDA KUNIHIKO (JP)
Application Number:
PCT/JP2022/031166
Publication Date:
March 02, 2023
Filing Date:
August 18, 2022
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H02M7/48
Domestic Patent References:
| WO2017212911A1 | 2017-12-14 |
Foreign References:
| JP2020174419A | 2020-10-22 | |||
| JP2009055657A | 2009-03-12 | |||
| JP2013198202A | 2013-09-30 |
Attorney, Agent or Firm:
HATTORI & PARTNERS (JP)
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