POWER CONVERSION CIRCUIT

To provide a power conversion circuit that reduces noise correctly.SOLUTION: A power conversion circuit includes a semiconductor transistor 2a that is driven based on gate voltage, a switching speed control circuit 4a that transmits a signal for delaying the switching speed relative to predetermined...

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Bibliographische Detailangaben
1. Verfasser:	KINOUCHI SHINICHI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS BASIC ELECTRONIC CIRCUITRY CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION PULSE TECHNIQUE
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Beschreibung
Zusammenfassung:	To provide a power conversion circuit that reduces noise correctly.SOLUTION: A power conversion circuit includes a semiconductor transistor 2a that is driven based on gate voltage, a switching speed control circuit 4a that transmits a signal for delaying the switching speed relative to predetermined speed on the basis of the value of gate mirror voltage detected from the gate voltage when the semiconductor transistor 2a is turned off, and a gate driver 3a that, upon the reception of the signal for delaying the switching speed relative to the predetermined speed from the switching speed control circuit 4a, delays the switching speed of turning on the semiconductor transistor 2a relative to the predetermined speed.SELECTED DRAWING: Figure 1 【課題】ノイズの低減を正確に行う電力変換回路を提供することを目的とする。【解決手段】ゲート電圧により駆動される半導体トランジスタ２ａと、半導体トランジスタ２ａのターンオフ時のゲート電圧から検出したゲートミラー電圧の値に基づいてスイッチング速度を予め定められた速度よりも遅くする信号を送信するスイッチング速度制御回路４ａと、スイッチング速度制御回路４ａからスイッチング速度を予め定められた速度よりも遅くする信号を受信したときに半導体トランジスタ２ａのターンオンのスイッチング速度を予め定められた速度よりも遅くするゲートドライバー３ａとを備える。【選択図】図１