Disassembly report: Jiayu 35W dual C-Port gallium nitride charger

2024-11-01

With the 35W dual port fast charging trend brought by apple, many domestic charger manufacturers have launched corresponding dual port chargers. Shenzhen Jiayu electronics has launched a gallium nitride charger with dual usb-c interface, which adopts a folding pin design, small and portable, and easy to use. This charger has 35W fast charging output. It still supports fast charging when two ports are output at the same time, and supports dynamic distribution output when two ports are used at the same time, greatly enhancing the use experience.

Charging head network has obtained this 35W dual usb-c charger launched by Jiayu. Now let's share the internal disassembly of this product.

Jiayu's dual C-Port gallium nitride charger is small and portable with a black body and folding pin design. The charger supports 35W PD fast charging, 20V output, and 3.3-11v3a PPS fast charging, which can meet the charging needs of Android, apple phones, and laptops, and is quite practical.

Through the disassembly of the charging head network, it is learned that Jiayu charger adopts flyback topology, with fixed voltage output. The output uses two independent step-down circuits for step-down output. When two ports are output at the same time, it also supports fast charging. The charger has built-in dongke semiconductor's fast charging power supply scheme, and built-in dk045g sealed gallium nitride chip with dk5v100r10m synchronous rectification chip to form a sealed gallium nitride fast charging power supply scheme with synchronous rectification.

Two Zhirong sw3526 are used for the step-down output of usb-c port. The sw3526 is internally integrated with a step-down switch, and the peripheral components are very simplified, greatly simplifying the design of fast charging power supply. Three PCBs are combined and welded inside the charger, which is compact in design. The front and back sides of the PCBA module are covered with thermal conductive pads to enhance the heat dissipation performance. The output adopts solid-state capacitor filtering, and the material and workmanship are solid.