Title:
スイッチング素子の制御装置
Document Type and Number:
Japanese Patent JP6686917
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To restrain oscillation of switching elements connected in parallel.SOLUTION: A controller includes a setting circuit for setting the target value of the gate voltage of each switching element, a drive circuit for switching each switching element by applying a gate voltage having a target value thus set to the gate of each switching element, a difference detection circuit for detecting the difference between the currents flowing to respective switching elements, and a counting circuit for counting the number of times of oscillation occurring in the detection value of the difference detection circuit, after switching by a gate drive circuit. When the count value by the counting circuit goes above a prescribed number of times, the setting circuit changes the gate voltage of at least one of the two switching elements.SELECTED DRAWING: Figure 1
Inventors:
Taro Shimosaka
Makoto Imai
Keita Hatasa
Makoto Imai
Keita Hatasa
Application Number:
JP2017012428A
Publication Date:
April 22, 2020
Filing Date:
January 26, 2017
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
H02M1/08; H02M1/00
Domestic Patent References:
| JP2018107880A | ||||
| JP2004229382A | ||||
| JP2013017092A |
Attorney, Agent or Firm:
Kaiyu International Patent Office