1. Overview of power module development
Power modules (AC/DC adapters, etc.) have long been less of a concern because of their direct impact on the performance and functionality of electrical products. However, in recent years, attention has been paid to such power sources to an unprecedented level. The main reason is that it can be said to be "environment". In recent years, environmental problems have frequently occurred around the world, and various countries have launched many actions to reduce the environmental burden. Of course, the environmental protection strategy for power sources has already been put on the agenda. The keywords have the following two.
Keyword 1: Efficient
As the production of electrical products increases year by year, the electricity consumption is also increasing in proportion to its annual growth. Today, the annual production of electrical products is about 5 billion units, most of which are equipped with power modules and power circuits. Assume that the loss of these power supplies can be improved by 1W (Watts). Simply calculate that you can save 5 billion W per year, and the energy saving effect is equivalent to 5 nuclear power plants. In this context, national standards bodies have also raised energy efficiency standards, requiring the development of power modules and power circuits that meet these standards.
Here is a representative standard for the efficiency requirements of power modules - the energy efficiency standards set by the US Department of Energy (DOE). On February 3, 2014, the US Department of Energy issued more stringent energy efficiency requirements for external power supplies such as AC adapters. From February 10, 2016 (expected), external power sources that do not meet the new standards (Table 1, Table 2) will not be available for sale in the United States. Therefore, companies such as AC/DC adapter manufacturers are accelerating the launch of products that meet this standard.
Table 1. DOECEC Level 6 External Power Supply Energy Efficiency Standard AC/DC Power Supply (Output Voltage ≧6V)
Table 2. DOECEC Level 6 External Power Supply Energy Efficiency Standard AC/DC Power Supply (Output Voltage <6V)
Keyword 2: Reducing industrial waste
As the number of electrical products produced increases, so does the amount of waste. In order to reduce these industrial wastes, 3R is required (reduced use: Reuse, reuse: Reduce, recycling: Recycle). For a long time, only some of the components and materials of the power supply products can be recycled, and most of them are discarded. Nowadays, the development of technology to alleviate this kind of environmental burden has achieved great results, and more and more products are beginning to be equipped with power modules and power circuits. In the near future, these technologies are expected to make a greater contribution to the reduction of industrial waste.
This article will focus on these keywords for the efficiency of power supply and technology and applications.
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