USB circuit compatible with charging and data transmission

Abstract

A USB circuit compatible with charging and data transmission comprises a USB-A female seat, a chip U11, a chip U3 and a step-down chip U10, the model of the chip U11 is TPS2546, the model of the chip U3 is BP1048B2, and the model of the step-down chip U10 is TPS54302; the USB flash disk is inserted into the USB-A female seat, input is carried out through the tenth pin and the eleventh pin of the chip U11, then the signals are transmitted to the second pin and the third pin in the chip U11 and then output to the 26th pin and the 27th pin of the chip U3, and finally the signals of the USB flash disk are read in the chip U3 to complete data transmission. The battery inputs voltage through a third pin of the voltage reduction chip U10, the voltage is reduced to 5V from the interior of the chip U10, the voltage is output through a second pin, the voltage is input through a first pin of the chip U11, the voltage is output through a twelfth pin after being processed in the chip U11, and the twelfth pin of the chip U11 is connected with a charging line through USB-A to charge the outside. And one USB-A female seat is compatible with data transmission and 5V voltage output.

Description

Technical Field

[0001] The utility model relates to the technical field of USB, in particular to a USB circuit compatible with charging and data transmission. Background Art

[0002] Conventional USB-A sockets only support data transmission (identifying USB flash drive data) but not charging, or can only output 5V voltage (similar to power banks) but not data transmission, etc. If data transmission and voltage output are required, two USB-A sockets plus peripheral components are required, which not only greatly reduces the product's aesthetics, but also occupies a lot of structural space. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a USB circuit compatible with charging and data transmission, and a USB-A female socket is compatible with data transmission and 5V voltage output.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a USB circuit compatible with charging and data transmission, including a USB-A female socket, a chip U11, a chip U3 and a buck chip U10, the model of the chip U11 is TPS2546, the model of the chip U3 is BP1048B2, and the model of the buck chip U10 is TPS54302;

[0005] The USB flash drive is inserted into the USB-A female socket and input through the 10th and 11th pins of the chip U11. Then the chip U11 transmits the data to the 2nd and 3rd pins, and then outputs it to the 26th and 27th pins of the chip U3. Finally, the chip U3 reads the USB flash drive signal to complete the data transmission.

[0006] The battery inputs voltage through the 3rd pin of the step-down chip U10, which steps down the voltage to 5V inside the chip U10 and outputs it from the 2nd pin, and then inputs it to the 1st pin of the chip U11. After internal processing by the chip U11, it is output from the 12th pin. The 12th pin of the chip U11 is connected to the charging cable through the USB-A for external charging.

[0007] Compared with the prior art, the utility model has the following beneficial effects:

[0008] A USB-A female connector is compatible with data transmission and 5V voltage output, reducing costs and improving appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is the schematic diagram of chip U11.

[0010] Figure 2 This is the schematic diagram of chip U3.

[0011] Figure 3 This is the schematic diagram of the buck chip U10. DETAILED DESCRIPTION

[0012] The utility model will be further described below in conjunction with the accompanying drawings.

[0013] like Figures 1 to 3 As shown, a USB circuit compatible with charging and data transmission includes a USB-A socket, a chip U11, a chip U3 and a buck chip U10; the model of the chip U11 is TPS2546, the model of the chip U3 is BP1048B2, and the model of the buck chip U10 is TPS54302. The USB flash drive is inserted into the USB-A socket and input through the 10th and 11th pins of the chip U11, and then the chip U11 transmits to the 2nd and 3rd pins, and then outputs to the 26th and 27th pins of the chip U3. Finally, the chip U3 reads the USB flash drive signal to complete the data transmission. After powering on, the product's built-in battery (18.5V / 4000mAh) inputs voltage through the third pin of the step-down chip U10. The chip U10 steps down the voltage to 5V and outputs it from the second pin. Then, it is input to the first pin of the chip U11. After internal processing, the chip U11 outputs it from the 12th pin. The 12th pin of the chip U11 is connected to the charging cable through the USB-A for external charging.

Claims

1. A USB circuit compatible with charging and data transmission, characterized in that: It includes a USB-A socket, a chip U11, a chip U3 and a buck chip U10. The model of the chip U11 is TPS2546, the model of the chip U3 is BP1048B2, and the model of the buck chip U10 is TPS54302. The USB flash drive is inserted into the USB-A female socket and input through the 10th and 11th pins of the chip U11. Then the chip U11 transmits the data to the 2nd and 3rd pins, and then outputs it to the 26th and 27th pins of the chip U3. Finally, the chip U3 reads the USB flash drive signal to complete the data transmission. The battery inputs voltage through the 3rd pin of the step-down chip U10, which steps down the voltage to 5V inside the chip U10 and outputs it from the 2nd pin, and then inputs it to the 1st pin of the chip U11. After internal processing by the chip U11, it is output from the 12th pin. The 12th pin of the chip U11 is connected to the charging cable through the USB-A for external charging.

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