SEMICONDUCTOR ELEMENT CONTROL DEVICE

To provide a semiconductor element control device that determines correctly the deterioration due to temperature change of a semiconductor element and protect the semiconductor element.SOLUTION: A semiconductor element control device includes an element temperature sensor that detects the temperatur...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
1. Verfasser:	HATASA KEITA
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 CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	To provide a semiconductor element control device that determines correctly the deterioration due to temperature change of a semiconductor element and protect the semiconductor element.SOLUTION: A semiconductor element control device includes an element temperature sensor that detects the temperature of a semiconductor element, a protection unit that performs predetermined protecting operation for the semiconductor element, and a determination unit that determines whether to perform the protecting operation by the protection unit by comparing the detection temperature by the element temperature sensor and the upper limit threshold. The determination unit decreases the upper limit threshold when the detection temperature by the element temperature sensor becomes lower than the lower limit threshold.SELECTED DRAWING: Figure 3 【課題】半導体素子の制御装置において、半導体素子の温度変化による劣化を正確に判断し保護する。【解決手段】半導体素子の制御装置は、半導体素子の温度を検出する素子温度センサと、半導体素子に対して所定の保護動作を実行するための保護部と、素子温度センサによる検出温度と、上限閾値とを比較することにより、保護部による保護動作の要否を判断する判断部とを備え、判断部は、素子温度センサによる検出温度が下限閾値を下回ったときに、上限閾値を低下させる。【選択図】図３