source:Industry News Popular:adapter release time:2021-12-23 10:29:21 Article author:sznbone
Interested friends will notice an interesting thing. In the past two years, our mobile phone screens have become larger and larger, but the power adapters used for charging have become smaller and smaller. The power adapter used to be a big man, but now many of them can be put in a pocket. This is getting more and more convenient, but do you know how our power adapters have become smaller and smaller?
The electronic devices we usually use, such as laptops, LCD TVs, digital cameras, etc., are usually directly powered by battery packs. In order to be able to use power frequency AC power or charge its internal battery pack, there must be an ACDC conversion device, that is, a switching power supply adapter. For safety reasons, the general power adapter is basically a fully enclosed plastic shell. In this way, the heat dissipation of the power adapter becomes a design problem. Therefore, the old power adapters previously designed are quite stupid and consider heat dissipation.
Then how does our adapter become convenient and compact?
1. The use of a monolithic integrated switching power supply chip improves the mounting density of the adapter and reduces the volume of electronic components. This makes it possible in theory to reduce the size of the power adapter.
2. The on-resistance of the high-voltage and high-power longitudinal m0s tube is significantly reduced. The use of synchronous rectification technology improves the efficiency of the switching power adapter, reduces the heat output of the power adapter, and effectively eliminates the heat dissipation space reserved by the adapter.
3. The switching frequency is further improved, which effectively reduces the volume of the iron core transformer and the capacity of the filter capacitor. At the same time, the use of triple insulated wires also reduces the volume of the adapter's core transformer by 15%.
It is these technological advances that make our power adapters smaller and smaller, but more and more safe and efficient.
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