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Why laptop power adapters are not so small

source:Industry News     Popular:adapter     release time:2022-03-02 16:45:09     Article author:sznbone    

  Why laptop power adapters are not so small(图1)

  All electronic products used in our lives need to be powered by power adapters. Although they have different shapes and sizes, the working principle of power adapters for all electronic products is basically the same, and they mainly play a role in voltage transformation. , So some people asked, since the function and working principle are the same, why not make the power adapter of the notebook like the size of the mobile phone charger? Wouldn't it be more portable? Today, the power adapter manufacturer is here to answer this question for you. There are two main reasons.

  First, the power is different. Most of the ordinary mobile phone chargers have a power of 5W, and most of the current fast charging chargers have only a dozen to more than 20 watts. The power of notebook power adapters is generally above 45W. The greater the power, the larger the internal capacitors, transformers and other components, so the greater the space requirements, and the heat dissipation and insulation problems of the adapter itself also need to be considered. If you look closely, the current high-power fast charging chargers are also larger than ordinary chargers. The same is true.

  Second, the cost and demand. The biggest function of the notebook power adapter is to provide a stable DC current. The primary requirement is stability and safety, and there is no rigid requirement for the size. After all, the notebook itself is not small. If you want to further reduce the size while ensuring a safe and stable power supply, you must increase the cost and carry out a more precise design. And because the mobile phone needs to be carried around and charged very frequently, the mobile phone charger is also required to be portable, and it is best to put it directly in the pocket, so the smaller it is.

  However, these are slowly changing, notebooks are becoming thinner and lighter, and the power adapters of notebooks have become smaller. For example, the USB PD power adapter of Apple Macbook is not much larger than ordinary mobile phone chargers. Flypower's 45WPD charger can supply power to various devices such as notebooks, mobile phones, game consoles, etc. at the same time, and the volume is also very small.


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