Disassembly report: Grapefruit Mini 33W gallium nitride charger

2022-05-21

A compact gallium nitride fast charge is very refreshing compared with the traditional charger with input line and output line. Grapefruit ratio 33W gallium nitride charger is a compact charger with folding pins. The color matching is both stable and fresh, which is perfect for different people. The fast charging protocol supports a wide range and has good compatibility with mobile phones and notebooks. Now let's disassemble this 33W gallium nitride charger in detail to see how to design it internally.

Grapefruit 33W gallium nitride adopts small square design and is equipped with folding pins, which is very convenient for daily carrying and use. A wide range of fast charging protocols, support 20V output and PPS protocol, so that this charger can adapt to notebook and mobile phone charging at the same time, with very good compatibility.

Through the disassembly of the charging head network, it is learned that the grapefruit ratio 33W gallium nitride charger adopts the structure of combined welding of three PCBs, and the plastic support is fully insulated between the primary and secondary. The combination of multiple PCBs can fully improve the internal space utilization of the charger, which is also the key to making this charger so small.

In terms of materials, the grapefruit ratio 33W gallium nitride charger is produced by Nanjing KUKE electronics. The internal use of Nanxin zc03c flyback controller + sc3503 synchronous rectifier controller + sc2151a protocol chip, a full set of Nanxin scheme. The primary gallium nitride power chip is nano nv6152, which supports nondestructive current detection without sampling resistance and is more efficient. The capacitors come from well-known brands in the industry, and the workmanship is very good as a whole.