Method for realizing complete compensation of line loss voltage and intelligent power supply circuit

Abstract

The invention relates to a method for realizing the complete compensation of line loss voltage and provides an intelligent power supply circuit for realizing the complete compensation of the line lossvoltage. The voltage value of a wirelessly transmitted detection voltage is provided by means of peripheral equipment (namely a load end) and then is converted into an analog value through a CPU; a feedback end, namely a feedback voltage, of a power supply is influenced by the real-time change of voltage difference obtained by comparison, and therefore, the power supply is controlled to adjust anactual output voltage; and finally, the effect of the complete compensation of the line loss voltage is achieved. With the method and the intelligent power supply circuit provided by the embodimentsof the invention adopted, the line loss voltage can be automatically and completely compensated in real time without considering the matching problem of line loss compensation resistance and whether the line resistance of load lines is different or not.

Description

technical field [0001] The invention relates to power supply technology, more specifically, to a method for realizing full compensation of line loss voltage, and an intelligent power supply circuit for realizing full compensation of line loss voltage. Background technique [0002] With the improvement of the performance of electronic devices, the current output required for charging the electronic devices is increasing, and it is necessary to support different load currents, and at the same time, the charging voltage needs to be kept stable. However, due to the line loss voltage drop in the extension line, the power supply circuit in the prior art cannot solve or completely solve the problem of line loss voltage compensation caused by high current or inconsistent load current. [0003] In the prior art, most of the power supply technical solutions for line loss voltage compensation are to increase the line loss compensation resistor compensation voltage on the line. Although...

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Problems solved by technology

However, due to the line loss voltage drop in the extension line, the power supply circuit of the prior art cannot solve or completely solve the problem of line loss voltage compensation caused by high current or inconsistent load current.

[0003] In the prior art, most of the power supply technical solutions for line loss voltage compensation are to increase the line loss compensation resistor compensation voltage on the line. Although the above technical solutions can compensate part of the voltage, the line loss compensation voltage is often reduced due to the difference in load line resistance. It will be over-regulated, sometimes under-regulated; and the matching problem of the line loss compensation resistor should also be considered

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