Title:
SWITCH CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/142867
Kind Code:
A1
Abstract:
Switch control devices (24, 70) turn a pair of switches (Sp, Sn, 51, 52) on and off alternately according to a duty signal, so that both are not on simultaneously. The switches (Sp, Sn, 51, 52) are provided in series between a power supply unit and a ground. The switch control device comprises: a signal generating unit (24) that generates duty signals; a determination unit (71) that determines that overcurrent is flowing in a route passing through the pair of switches, in a state for which after an on failure has occurred with one switch of the pair of switches, the other switch is turned on; a break operation unit (72) that, when it is determined by the determination unit that overcurrent is flowing, breaks at a slower speed than the normal break speed of the other switch; and a restriction unit (24) that restricts the on time of the duty signal so as to ensure at least the time required for overcurrent determination by the determination unit and starting of the break operation by the break operation unit.
Inventors:
INOKUMA KENJI (JP)
SUZUKI TAKUTO (JP)
SUZUKI TAKUTO (JP)
Application Number:
PCT/JP2018/000454
Publication Date:
August 09, 2018
Filing Date:
January 11, 2018
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H02P25/024; H02M7/48
Domestic Patent References:
| WO2014097485A1 | 2014-06-26 |
Foreign References:
| JP2012196065A | 2012-10-11 | |||
| JP2001145209A | 2001-05-25 | |||
| JP2001197724A | 2001-07-19 | |||
| JP2010148173A | 2010-07-01 | |||
| JP2014217249A | 2014-11-17 |
Attorney, Agent or Firm:
YAMADA, Tsuyoshi (JP)
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