A switching power supply and power supply system

Abstract

A switching power supply and power supply system are used for reducing the volume of the switching power supply and lowering the integrated cost of the switching power supply. The switching power supply comprises: a plurality of voltage regulating circuits; an input end of each voltage regulating circuit is connected with a power supply, and an output end of each voltage regulating circuit is connected with a load; wherein the DC reactors of the plurality of voltage regulating circuits are packaged together, and the plurality of DC reactors are used for heat exchange with a refrigeration device. The DC reactor on the output side of each voltage regulating circuit can eliminate harmonic signal interference, can package the plurality of DC reactors together, can reduce the problem of large volume of the switching power supply caused by separate installation of each DC reactor, and is also beneficial to further reduce the integrated cost of the switching power supply. In addition, since the plurality of DC reactors are packaged together and refrigerated, compared with separately configuring a refrigeration device for each DC reactor, the refrigeration cost of the switching power supply can be reduced and the refrigeration efficiency of the switching power supply can be improved.

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