Title:
SWITCHING CIRCUIT
Document Type and Number:
Japanese Patent JP2018088639
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To successfully switch controls depending on current flowing through a parallel circuit.SOLUTION: A switching circuit comprises wiring where a parallel circuit of a first IGBT and a second IGBT is inserted and a control circuit which switches the first IGBT and the second IGBT. The control circuit turns on both of the first IGBT and the second IGBT at the time of turn-on. The control circuit executes first control to turn off one of the first IGBT and the second IGBT before the time of turn-off when current flowing through the parallel circuit is equal to or lower than threshold in a state where both of the first IGBT and the second IGBT are in the ON state and to turn off the other of the first IGBT and the second IGBT at the time of turn-off. The control circuit executes second control to turn off both of the first IGBT and the second IGBT at the time of turn-off when current flowing through the parallel circuit is higher than the threshold in the state where both of the first IGBT and the second IGBT are in the ON state.SELECTED DRAWING: Figure 2
More Like This:
| JPS57148425 | SEMICONDUCTOR SWITCHING POWER SUPPLY CIRCUIT |
| JPH02272908 | SWITCHING CIRCUIT |
| JPS62200819 | INTEGRATED CIRCUIT DEVICE |
Inventors:
TOGYO KEN
SHINDO YUSUKE
SUZUKI TOMOTAKA
SHINDO YUSUKE
SUZUKI TOMOTAKA
Application Number:
JP2016231511A
Publication Date:
June 07, 2018
Filing Date:
November 29, 2016
Export Citation:
Assignee:
TOYOTA MOTOR CORP
DENSO CORP
DENSO CORP
International Classes:
H03K17/04; H02M1/08
Domestic Patent References:
| JP2016146717A | 2016-08-12 | |||
| JP2008067157A | 2008-03-21 | |||
| JP2009284640A | 2009-12-03 | |||
| JP2007074771A | 2007-03-22 | |||
| JP2012249509A | 2012-12-13 |
Attorney, Agent or Firm:
Kaiyu International Patent Office
Previous Patent: A high frequency power amplifier and radio communication equipment
Next Patent: A manufacturing method of a directional coupler
Next Patent: A manufacturing method of a directional coupler