Circuit board of power adapter, power adapter and electrical equipment

Abstract

The present application relates to a circuit board of a power adapter, a power adapter and electrical equipment, and belongs to the technical field of circuit boards. The present application includes: a transformer, a DC bus, a filter module, a chip and a heat sink configured on the chip, the DC bus is used for receiving the DC power output by the transformer, and the filter module is used for filtering the DC power received by the DC bus; the chip is formed in the transformer and between the filter modules, so that the heat sink on the chip is located between the transformer and the filter module; the heat sink is connected to the DC bus. Through the present application, it is helpful to meet the requirement of reducing EMI under the miniaturized design of the power adapter.

Description

Power adapter circuit board, power adapter and electrical equipment technical field The application belongs to circuit board technical field, be specifically related to the circuit board of power adapter, power adapter and electricity equipment. Background technique In the related art, the power adapter is used in conjunction with electrical equipment, and many electrical equipment need to pass the power adapter. To charge, especially small electrical devices, such as mobile phones, notebooks, etc. In specific product applications, the requirements for the volume, frequency, power density and other aspects of the power adapter are getting higher and higher. See, the power adapter is required to be small and portable. However, under the continuous miniaturization and portability of the power adapter, the The more compact the layout space of the sub-devices, the higher the frequency and the higher power density, the better the electromagnetic compatibility characteri...

AI Technical Summary

Problems solved by technology

[0003] In specific product applications, the requirements for the size, frequency, and power density of the power adapter are getting higher and higher. Commonly, the power adapter is required to be small and portable. The more compact the layout space, the higher frequency and higher power density have a great impact on the electromagnetic compatibility characteristics of the power adapter, which makes the EMI (electromagnetic interference) problem of the power adapter more prominent. Specifically, it is reflected in the increased frequency. The high-frequency spectrum of electromagnetic noise deteriorates the electromagnetic noise source in the power adapter, and the increase in power density reduces the spacing between various electronic devices and increases the distribution parameters of electromagnetic coupling.

Images