Circuit structure for expanding input voltage range of DC/DC power supply

The invention relates to a circuit structure for expanding input voltage range of a DC/DC power supply. The positive input end of DC is connected with the first end of an inductor L1. The second end of the inductor L1 is connected with the drain electrode end of a field effect transistor Q1. The sou...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ZHANG TINGYIN, LIU MENG, WU ZHIGUANG, YU HAOGUANG, XU CHENGYAN
Format:	Patent
Sprache:	chi ; eng
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
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Beschreibung
Zusammenfassung:	The invention relates to a circuit structure for expanding input voltage range of a DC/DC power supply. The positive input end of DC is connected with the first end of an inductor L1. The second end of the inductor L1 is connected with the drain electrode end of a field effect transistor Q1. The source electrode end of the field effect transistor Q1 is connected with an inductor L2. The gate electrode end of the field effect transistor Q1 is connected with a Q1 driving circuit. The Q1 driving circuit is connected with a clamping control circuit. The clamping control circuit is connected with asampling circuit. The sampling circuit is connected with the positive input end of DC. The inductor L2 is further connected with an inductor C1. The inductor C1 is connected with the negative input end of DC. The inductor L2 is connected with the drain electrode end of the field effect transistor Q2 and the drain electrode end of the field effect transistor Q3. The gate electrode end of the fieldeffect transistor Q3 is c