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Patent Searching and Data


Title:
DRIVING CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2020/166435
Kind Code:
A1
Abstract:
This driving circuit (101), which drives an inductive load (41) having a coil (41a), comprises: a first switch (SW1) that switches an electrification state between a power source (Vcc) and a first end among the first end and a second end of the coil; and a second switch (SW2) that switches an electrification state between the second end of the coil and a ground terminal (GND). Furthermore, the driving circuit comprises: a first circuit (110) between the first end of the coil and the ground terminal; and a second circuit (120) between the second end of the coil and the power source. The first circuit is an arc extinction circuit that emits electromagnetic energy of the coil at the time of a driving stop control, and the second circuit is a circuit that allows electrification between the second end of the coil and the power source at least at the time of the driving stop control of the inductive load.

Inventors:
TOYAMA KEISUKE (JP)
Application Number:
PCT/JP2020/004149
Publication Date:
August 20, 2020
Filing Date:
February 04, 2020
Export Citation:
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Assignee:
DENSO CORP (JP)
International Classes:
H01H47/00; H01F7/18
Foreign References:
JPS5389969A1978-08-08
JP2004134510A2004-04-30
JP2002345102A2002-11-29
Attorney, Agent or Firm:
YAMADA, Tsuyoshi (JP)
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