High-frequency synchronous rectification switching power supply

Abstract

The invention provides a high-frequency synchronous rectification switching power supply, including a case, a first rectification module, a second rectification module, a chopping module, a transformer, a first polar plate, a second polar plate, a first heat dissipation channel and a second heat dissipation channel, wherein the transformer is installed between the first heat dissipation channel and the second heat dissipation channel. According to the high-frequency synchronous rectification switching power supply, the transformer is arranged between the first heat dissipation channel and the second heat dissipation channel, and other components that need heat dissipation are arranged between the first heat dissipation channel and the second heat dissipation channel, and / or between the first heat dissipation channel and the case, and / or between the second heat dissipation channel and the case, so that two ends of the transformer with relatively high heat productivity can dissipate heat, thereby improving heat dissipation efficiency of the transformer, heat dissipation in the case is uniform, and a local high-temperature area is not easy to occur.

Description

technical field [0001] The invention relates to the technical field of power supply devices, in particular to a high-frequency synchronous rectification switching power supply. Background technique [0002] The high-frequency switching rectifier power supply is a device that uses the principle of high-frequency inverter to convert the alternating current in the power grid into direct current. The structure of the power supply module has a decisive impact on the performance, cost, and scope of application of the power supply; an excellent module structure design requires Conform to the following principles: ①Conform to the basic topology of the circuit, and the current flow is smooth and reasonable; ②Separate the strong current part and the weak current part in the module as far as possible, so that the electromagnetic compatibility performance is good and the safety is good; ③The conductive busbar and cable are as short as possible , can reduce loss and reduce the amount of ...

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Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the transformer in the prior art is easy to form a high temperature zone on one side, resulting in poor heat dissipation effect, so as to provide a kind of structure with reasonable overall structure layout, uniform heat dissipation, and less prone to local high temperature zone. High Frequency Synchronous Rectification Switching Power Supply

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