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Title:
DRIVING CIRCUIT FOR DRIVING SWITCHES TO BE DRIVEN
Document Type and Number:
WIPO Patent Application WO/2019/142730
Kind Code:
A1
Abstract:
A driving circuit (Dr) drives a plurality of switches (SW1-SW3) to be driven, the switches to be driven being connected in parallel to each other. The switches to be driven have a first main terminal, a second main terminal, and a main control terminal. The difference in potential of the main control terminal relative to the second main terminal reaching or exceeding a threshold voltage enables a current to flow between the first main terminal and the second main terminal. The threshold voltages of at least two of the switches to be driven differ from each other. The driving circuit is provided with electrical paths (Loff1, Loff2, Ldis2, Ldis3) that establish, for each of the switches to be driven, an electrical connection from the second main terminal or a negative voltage source (57) having a negative voltage lower than the potential of the second main terminal to the main control terminal. For each of the electrical paths, the impedance of the electrical path is such that the abovementioned difference in potential that has increased due to a charge flowing into the electrical path through the parasitic capacitance of the switch to be driven is less than the threshold voltage.

Inventors:
WATANABE, Kazunori (1-1 Showa-cho, Kariya-cit, Aichi 61, 〒4488661, JP)
Application Number:
JP2019/000669
Publication Date:
July 25, 2019
Filing Date:
January 11, 2019
Export Citation:
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Assignee:
DENSO CORPORATION (1-1 Showa-cho, Kariya-city Aichi, 61, 〒4488661, JP)
International Classes:
H03K17/30; H02M1/08; H03K17/567
Domestic Patent References:
WO2016181597A12016-11-17
Foreign References:
JP2017028779A2017-02-02
JP2013013051A2013-01-17
JP2012227825A2012-11-15
JP2014075896A2014-04-24
JPH0590933A1993-04-09
US20160373103A12016-12-22
Attorney, Agent or Firm:
YAMADA, Tsuyoshi (Daiichi Hasegawa Bldg.6F, 13-24 Meieki 3-chome, Nakamura-ku, Nagoya-sh, Aichi 02, 〒4500002, JP)
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