A dynamic adjustment method, system and electronic equipment for load current

Abstract

The invention provides a dynamic adjustment method for load current. The method comprises the following steps of outputting preset current, detecting the load current flowing through a load, calculating the current change ratio of the preset current to the load current, dynamically adjusting the preset current according to the current change ratio so as to obtain the current which should be output, and setting the preset current again according to the current which should be output. According to the dynamic adjustment method for the load current, overcurrent protection of different loads for using the same charging equipment can be achieved, and the design capacity of a chip can be brought into play to the maximum extent.

Description

Technical field [0001] The present invention belongs to the field of electronic technology, and relates to an adjustment method and system, in particular to a dynamic adjustment method, system and electronic equipment of a load current. Background technique [0002] Now more and more electronic products are equipped with USB charging and power supply ports, such as wireless routers, EPON, GPON, set-top boxes, televisions and other electronic products. For users, powered devices with USB interfaces such as mobile phones, PADs, USB flash drives, hard drives, digital cameras, etc., these electronic devices with different functions have different charging and working power consumption, some are less than 1A, some Is as large as several amperes. How do we ensure that different loads are using the same charging equipment for overcurrent protection? [0003] See figure 1 , Shown as a schematic diagram of a circuit with a fixed load current limit in the prior art. figure 1 C1 is the filt...

AI Technical Summary

Problems solved by technology

[0008] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a dynamic adjustment method, system and electronic equipment for load current, which are used to solve the excessive and insufficient design margins seen in the prior art It will not be able to maximize the design capabilities of the chip, and it will not be able to meet the problem of running devices with different load currents on the same power supply or charging device at the same time.

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