Disassembly report: Lenovo Thinkplus new mini 65W GaN charger GN65

2024-03-26

Lenovo recently introduced three new colors of the third generation lipstick gallium nitride power supply, which are cream green, plum soda purple and sea salt cheese blue, bringing a sense of responsibility to the traditional black or white original charger market. The third generation lipstick power supply adopts a breakthrough innovative design. It is only 44CC in size, but it can provide 65W output capacity, with a power density of up to 1.47W/cm ³ ， The balance between volume and performance is achieved.

The charging head network has obtained the third generation lipstick gallium nitride power supply with new color matching. Now we will disassemble it to see if the internal design has changed.

Previously, the charging head network also disassembled Lenovo ThinkBook mini 65W 1A1C GaN charger, Lenovo thinkplus 135W dual C-port GaN charger, Lenovo YOGA 130W dual USB C-port quick charger, Lenovo Saver 135W GaN quick charger and other products. Welcome to check.

Lenovo Thinkplus mini 65W GaN power supply introduced a new color scheme, which makes benchmark products more competitive. Different colors are better differentiated and more personalized. This power supply achieves 65W output power in a volume of 44CC, with a power density of 1.45W/cm ³， Small and portable. The power supply can not only charge the laptop, but also support the PPS fast charging protocol. It is also very compatible with Android mobile phone fast charging.

The charging head network learned through disassembly that Lenovo's third-generation lipstick power supply was filled with planar transformers and customized polymer thermal conductive materials, greatly improving the heat dissipation performance. With the stacking process of multiple PCBs, improving space utilization is also the key to achieving high power output in a small volume.

In the charger, the Ansenmey NCP1342 is used in conjunction with the nano semiconductor NV6134 GaN power chip, and the output adopts the Silijie SY5238 synchronous rectifier controller in conjunction with the Dongwei SFG10S08GF synchronous rectifier tube for synchronous rectification. The capacitor is from AiSHi Aihua, and the protocol chip uses Yingjixin IP2726, which supports a wide range of protocols. Lenovo also added TVS to USB-C pin to strengthen static protection, and the overall material and design are stable and reliable.