A multi-power supply current sharing control circuit

Abstract

The embodiment of the invention discloses a multi-power supply current-sharing control circuit. The multi-power supply current-sharing control circuit comprises N power supplies, wherein the N power supplies are connected in parallel, N is a positive integer, each power supply comprises a power supply circuit module, a sampling resistance module, a current control module and a voltage control module, when the N power supplies do not work, the voltage control modules of the N power supplies are adjusted so that output voltage of the N power supplies is the same, and when the N power supplies work, an output current of the power supply circuit modules is converted to sampling voltage by the sampling resistance modules, and the sampling voltage is input to the current control modules. The output current of the power supplies is controlled by adjusting the output current of the current control modules of the N power supplies, so that the output current of the N power supplies is the same. With the multi-power supply current-sharing control circuit disclosed by the embodiment of the invention, a load can be shared jointly by all the power supplies, and an effect of current sharing is achieved.

Description

technical field [0001] The invention relates to the field of circuit electronics, in particular to a multi-power supply current equalization control circuit. Background technique [0002] At present, various high-power devices have higher and higher requirements for power supply current. Since the use of a single power supply can no longer meet the high current requirements of high-power equipment, through the parallel technology of multiple power supplies, several or more than a dozen power supply modules can be combined into a redundant system to jointly provide the power or current required by the load. High current output can be achieved. However, in a redundant system, it is difficult to share loads among all power supplies, and the current sharing effect of multiple power supplies cannot be achieved. Contents of the invention [0003] The embodiment of the present invention provides a multi-power supply current sharing control circuit, which can make all the power ...

AI Technical Summary

Problems solved by technology

However, in a redundant system, it is difficult to share the load among all power supplies, and the current sharing effect of multiple power supplies cannot be achieved.

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