With the advent of 5g big data era, smart home has become a hot topic at present. As an indispensable hub for human-computer interaction, the smart speaker market has sprung up rapidly. Brands such as Xiaomi, Baidu, Ali, Huawei, Google and Amazon have launched relevant products. As the first domestic brand with a sales volume of more than 10 million in the category of smart speakers, tmall elf is deeply favored by users.
At the same time, in order to meet the power supply demand of tmall elf CCL large screen, it is specially equipped with an 18W power adapter with the specification of 12V / 1.5A. Charging head.com also learned that there are many OEM factories for tmall elf CCL original power adapter. Today, we bring you the disassembly of tmall elf CCL original 18W adapter (Chenyang version). It is understood that the PSR solution of this power adapter solves the problems of accurate output OVP and PK load for the first time. The original tmall elf adapter disassembled this time adopts a pure white PC shell, and the cable is integrated with the adapter body. The adapter is flat and oval, small and does not occupy space; The self-contained cable adopts round head connector. Standard national standard AC pin, non foldable design. As an accessory of tmall elf, it is basically used indoors, so it adopts the integrated design of cable and adapter to save cost. The PCB board is hollowed out, and the back looks very simple. In addition to the input rectifier bridge, the primary side and secondary side are controlled by IC with built-in MOS tube. PWM master chip g5238mk from globalsemi global semiconductor. This is a High-Performance AC / DC power controller. It uses digital control technology to build peak current PWM flyback power supply. The chip works in quasi resonant mode to provide high efficiency and some key built-in protection functions, minimize the number of external components, simplify electromagnetic interference design and reduce the total material cost. At the same time, the chip can also operate in peak power mode, and the instantaneous peak power is higher than the maximum continuous output power without increasing the design cost and size.
