Power module

Abstract

The invention provides a power module. The power module comprises a transformer, a first switch unit and a second switch unit; the transformer comprises a magnetic core and a flat winding wrapping a wrapping post of the magnetic core; the flat winding comprises a first winding, the first end of the first winding is electrically connected with the first switch unit and located on the first side face of the wrapping post, and when viewed in the direction perpendicular to the first side face, the projections of the first switch unit, the first end of the first winding and the wrapping post on thefirst side face are overlapped; and the second end of the first winding is electrically connected with the second switch unit and located on the second side face of the wrapping post, and the projections of the second switch unit, the second end of the first winding and the wrapping post on the second side face are overlapped when viewed in the direction perpendicular to the second side face. According to the power module provided by the invention, the winding loss is reduced, the occupied area of the power module is reduced, and the heat dissipation effect is improved.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a power module. Background technique [0002] With the improvement of human's requirements for intelligent life, the society's demand for data processing is increasingly strong. The global energy consumption in data processing reaches hundreds of billions or even trillions of kWh per year on average; and the floor area of ​​a large data center can reach tens of thousands of square meters. Therefore, high efficiency and high power density are key indicators for the healthy development of this industry. The key unit of the data center is the server, and its motherboard is usually composed of data processing chips such as a central processing unit (Central Processing Unit, CPU), chipset (Chipsets), memory, etc., their power supply and necessary peripheral components. [0003] With the improvement of server processing capacity per unit volume, it means that the number and...

AI Technical Summary

Problems solved by technology

However, in flat-wound transformers, due to the often large width of the winding copper foil, how to achieve low-loss connections between the windings and other components is very challenging

In low-voltage, high-current, high-frequency power modules, the number of turns of the secondary side winding is usually only one turn, and the additional loss caused by the imperfect connection between the winding and the device accounts for an increasing proportion of the total loss of the module. higher

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