Drive device for power conversion circuit
作者： 靖弘 神谷 , Yasuhiro Kamiya
DOI:
关键词: Comparator 、 Power (physics) 、 Current (fluid) 、 Diode 、 Voltage drop 、 Semiconductor device 、 Voltage reference 、 Voltage 、 Electrical engineering 、 Engineering
摘要: PROBLEM TO BE SOLVED: To solve such a problem that it is difficult to reduce power loss in conversion circuit equipped with semiconductor device having switching element Sw and free wheel diode FD provided on the same substrate together element. SOLUTION: A current flowing through detected as voltage drop amount Vse of shunt resistor 50, compared threshold value by comparator 54. If predetermined or more, application gate forcibly stopped. In order variably set accordance Sw, reference generating 56 sets be applied 54 voltage. COPYRIGHT: (C)2011,JPO&INPIT
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