Disassembly report: Lenovo ThinkPlus Mini 65W gallium nitride charger

2022-04-27

At Lenovo's 2022 thinkfamily spring launch on April 20, Lenovo launched new ThinkPad and ThinkCentre series products, and brought the third-generation lipstick gallium nitride power supply at the launch.

Compared with the previous two generations, the volume of the third generation lipstick gallium nitride power supply is significantly reduced. The mini body has only 44cc volume and the power density is as high as 1.45w/cm ³， It supports 65W fast charging and realizes the balance between volume and function. The charger supports PD3 0 and PPS fast charging protocol have good compatibility for laptop and mobile phone charging. Charging head network has got this charger and disassembled it. Let's have a look.

Lenovo's third-generation lipstick charger adopts the third-generation gallium nitride technology, which reduces the volume by 30% compared with the second-generation gallium nitride charger to 1.45w/cm ³ Ultra high power density, 65W fast charging output. The balance between volume and performance is realized. The charger supports 65W PD fast charging and PPS fast charging protocols. While charging the notebook, it can also meet the fast charging needs of mobile phones. One head can be used for multiple purposes.

According to the disassembly of the charging head network, Lenovo's third-generation lipstick charger is filled with plane transformer and customized polymer thermal conductive materials, which greatly improves the heat dissipation performance. It is also the key for small volume to achieve high power output. Three small boards are used inside the charger to cooperate with the plane transformer, which greatly improves the space utilization.

The charger uses ansenmey ncp1342 and nano micro semiconductor nv6134 gallium nitride power chip internally, and the output adopts silijie sy5238 synchronous rectification controller and meiweike mcac60n10y for synchronous rectification. The capacitor comes from Aishi Aihua, and the protocol chip uses yingjixin ip2726, which supports a wide range of protocols. Lenovo also adds TVs to usb-c pin to strengthen electrostatic protection, and the overall material and design are stable and reliable.