Low-voltage large-current DC-DC conversion system based on domestic chip EG7500

The invention belongs to the technical field of DCDC conversion systems, and particularly relates to a low-voltage large-current DCDC conversion system based on a domestic chip EG7500, which comprises a power supply, the power supply is connected with a PWM chip, and the PWM chip is connected with a...

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Bibliographische Detailangaben
Hauptverfasser:	QIAN XIAOJIAN, JIANG YONGYU, ZONG YIFAN
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 belongs to the technical field of DCDC conversion systems, and particularly relates to a low-voltage large-current DCDC conversion system based on a domestic chip EG7500, which comprises a power supply, the power supply is connected with a PWM chip, and the PWM chip is connected with a totem pole circuit; the PWM chip is further connected with a control circuit, the control circuit is connected with a sampling circuit, and the sampling circuit is connected with an output circuit. The power supply, the totem pole circuit and the output circuit are connected through an MOS tube, and resistors are connected between the MOS tube and the sampling circuit and between the MOS tube and the output circuit. According to the invention, the problem of large quiescent working current of the DC-DC converter is solved; under the condition of controlling the cost, the efficiency of the DC-DC converter is much higher than that of a common DC-DC converter in the same voltage range on the market. 本发明属于DC-DC转换系统技术领