Power-on and power-off sequential control DC circuit

The invention discloses a DC circuit for power-on and power-off time sequence control. Comprising a switching power supply chip, an inductor, a power supply input end and a power supply output end, an IN pin of the switching power supply chip is connected with the power supply input end, the power s...

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Bibliographische Detailangaben
Hauptverfasser:	PAN HONGZHANG, WEI ZHIYONG, WANG TINGYI
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 discloses a DC circuit for power-on and power-off time sequence control. Comprising a switching power supply chip, an inductor, a power supply input end and a power supply output end, an IN pin of the switching power supply chip is connected with the power supply input end, the power supply input end is grounded through a first resistor and a second resistor which are sequentially connected in series, and the joint of the first resistor and the second resistor is connected to an EN pin of the switching power supply chip. An EN end pin of the switching power supply chip is grounded through a first capacitor, an SW end pin of the switching power supply chip is connected with one end of an inductor, the other end of the inductor is connected with a power supply output end, and an FB end pin of the switching power supply chip is connected with the power supply output end through a third resistor and a fourth resistor which are sequentially connected in series. The joint of the third resistor and the