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1. (WO2014192246) LOAD CONTROL DEVICE

Pub. No.:    WO/2014/192246    International Application No.:    PCT/JP2014/002613
Publication Date: Fri Dec 05 00:59:59 CET 2014 International Filing Date: Tue May 20 01:59:59 CEST 2014
IPC: H02M 1/08
Applicants: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
パナソニックIPマネジメント株式会社
Inventors: HAYASHI, Masanori
林 雅則
GOTO, Kiyoshi
後藤 潔
Title: LOAD CONTROL DEVICE
Abstract:
A load control device comprises: a bidirectional switching element; a diode bridge circuit having a first and second AC input terminal respectively connected to the first and the second source electrode of the bidirectional switching element; a power source circuit for converting the output voltage between the plus terminal and the minus terminal of the diode bridge circuit to a constant voltage; a level conversion circuit for electrically connecting the plus terminal and the minus terminal to each other with a prescribed impedance; and a gate drive circuit. The gate drive circuit supplies the first and second gate electrodes with a drive voltage or a drive current from the power source circuit when a control signal is in high level. The bipolar transistor in the level conversion circuit is turned on when the control signal is in high level.