NMOS path switch control circuit

NMOS path switch control circuit

The invention provides an NMOS path switch control circuit. The NMOS path switch control circuit comprises an NMOS tube, a first low-dropout linear converter and a double-charge-pump voltage regulating circuit; the drain electrode of the NMOS tube, the input end of the first low-dropout linear conve...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LIANG YUANCHAO, ZHANG LONG, DENG QIN
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
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
CONTROL OR REGULATION THEREOF
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
SYSTEMS FOR STORING ELECTRIC ENERGY
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Beschreibung
Zusammenfassung:The invention provides an NMOS path switch control circuit. The NMOS path switch control circuit comprises an NMOS tube, a first low-dropout linear converter and a double-charge-pump voltage regulating circuit; the drain electrode of the NMOS tube, the input end of the first low-dropout linear converter, the first input end of the double-charge-pump voltage regulating circuit and the first output end of the double-charge-pump voltage regulating circuit are connected with a power supply; the output end of the first low dropout linear converter is connected with the second input end of the double charge pump voltage regulating circuit; the second output end of the double charge pump voltage regulating circuit is connected with the grid electrode of the NMOS tube; and the source electrode of the NMOS tube is connected with equipment to be charged. According to the invention, through the arrangement of the double-charge-pump voltage regulation circuit, when the input voltage is lower than the gate-source voltage