Electronic device and method for adjusting working mode of electronic device

Abstract

The invention relates to an electronic device. The electronic device comprises a USB interface, a current detection module, a load module, a work mode switching module, a power supply port and a power consumption module. The power supply port is used for outputting working currents to the power consumption module. The electronic device is connected with a USB interface of an external device through the USB interface to obtain currents. Output currents of the USB interface of the external device are detected by the current detection module. The work mode switching module controls output currents of the USB interface of the external device to constantly increase by constantly controlling and reducing the load value of the load module and determines the maximum power supply power which the USB interface of the external device can provide when the work mode switching module judges that the output currents detected by the current detection module do not increase any more. In addition, the work mode switching module adjusts the work modes of the electronic device according to the maximum power. The electronic device can adjust the work modes according to the power which the USB power supply can provide, and thus the efficacy of the electronic device is improved. The invention further provides a method for adjusting the work modes of the electronic device.

Description

technical field [0001] The present invention relates to an electronic device, in particular to an electronic device and method capable of adjusting the working mode based on the output power of a power supply. Background technique [0002] At present, some electronic devices, such as wireless routing equipment (such as MIFI, USBWI-FIAP products, etc.), mobile phones, digital cameras, e-books, etc., when connected to the USB interface, the input power is a standard USB power supply, and the standard USB interface The output power specification is 2.5W (5V / 500mA), but some USB power supplies on the market can provide up to 5W (5V / 1A) power output power. When designing and producing electronic products, it is necessary to consider the standard specifications of USB, and the power when charging or supplying power to the USB interface is limited to the standard USB output power. For example, the power of wireless routing products is limited to 2.5W. Below, or limit the charging ...

AI Technical Summary

Problems solved by technology

When designing and producing electronic products, the standard specifications of USB must be considered, and the power when charging or supplying power to the USB interface is limited to the standard USB output power. For example, the power used by wireless routing products is limited to 2.5W. Below, or limit the charging power of mobile phones, digital cameras, etc. through the USB power supply to less than 2.5W. However, when the wireless routing products are limited to less than 2.5W, the output power of the RF signal is relatively low, which limits the data transmission speed and signal coverage. range, and when the charging power of mobile phones, digital cameras, etc. is limited to 2.5W, it will obviously affect the charging speed

Therefore, in the prior art, even if the USB power supply can provide a power output power of 5W (5V / 1A), due to the limitation of the electronic device itself, the power output power cannot be used, resulting in a waste of resources

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