Charging switching control circuit and control method thereof

Abstract

The present invention discloses a charging switching control circuit and a control method thereof. The control circuit comprises a voltage input end, at least two voltage output ends and at least twoUSB interfaces, one signal input end of one USB interface is connected with one voltage output end, one switching circuit and one detection circuit are connected between the voltage input end and oneUSB interface, each detection circuit comprises one drive circuit, one voltage generation circuit and one voltage detection circuit, each voltage detection circuit detects the port voltage of one voltage output end, each drive circuit outputs drive signals to one switching circuit, and each voltage generation circuit is configured to generate detection voltage signals. The control method is applied to the charging switching control circuit. The rapid charging circuit is employed to achieve single-power and multi-port output IC, any one USB interface can support a rapid charging function, the IC area can be saved, and the cost is reduced.

Description

【Technical field】 [0001] The invention relates to the technical field of charging, in particular to a charging switching control circuit and a control method for the circuit. 【Background technique】 [0002] Portable devices are favored by consumers because of their small size and easy portability. With the popularization of portable devices such as portable devices, their functions are constantly improving. The more functions users use, the more power consumption of portable devices. Increase, users will often encounter the problem of insufficient battery power during use, so more and more people need to conveniently charge portable devices such as portable devices anytime and anywhere. The conventional charging method is slow and the charging method Limited to the conventional 5V / 1.5A charging limit, it cannot meet the needs of users to a large extent. [0003] At present, there are more and more fast charging devices with multiple USB output ports on the market. The USB f...

AI Technical Summary

Problems solved by technology

[0002] Portable devices are favored by consumers because of their small size and easy portability. With the popularization of portable devices such as portable devices, their functions are constantly improving. The more functions users use, the more power consumption of portable devices. Increase, users will often encounter the problem of insufficient battery power during use, so more and more people need to conveniently charge portable devices such as portable devices anytime and anywhere. The conventional charging method is slow and the charging method Limited to the conventional 5V / 1.5A charging limit, it cannot meet the needs of users to a large extent

[0003] At present, there are more and more fast charging devices with multiple USB output ports on the market. The USB fast charging sockets for charging electronic products such as mobile phones in the prior art generally only have one USB fast charging output interface. When in use, only one electronic product can be charged at the same time, which is not very practical and adaptable

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