Disassembly report: lvlian 45W dual C-Port gallium nitride charger

2024-09-08

The dual port charger is the current mainstream charger specification. With the support of gallium nitride, it has a small size and supports fast charging of two devices at the same time, which is very friendly to the dual machine party. Lvlian has launched a new mini dual port gallium nitride fast charge, which supports 45W fast charge output. Both single ports support 45W output, which can charge notebook computers. The dual port output supports automatic power distribution. The total output power is 45W, which is very practical.

Charging head network got the new dual port charger launched by lvlian. The charger is equipped with folding pins, which is very small in size, and the interface supports PPS fast charging. It can achieve the ideal fast charging effect for mobile phones and laptops. Next, charging head network will test and disassemble this charger to see how it is designed internally.

Lvlian 45W gallium nitride charger is small and portable, equipped with folding pins, which is very convenient to store and carry. The charger has dual usb-c port output, supports 45W power blind plug-in, supports 20V output, can charge notebook computers, and supports 3.3-11v 4.05a PPS fast charging. It can charge Samsung mobile phones at high speed, and also has a good fast charging effect for Android mobile phones that support high-power PPS fast charging.

Through disassembly, the charging head network learned that the charger of lvlian uses three PCB boards for combination welding, and the rectifier bridge, gallium nitride sealed chip and secondary step-down circuit are welded on different PCBs respectively, so as to fully share the heat and reduce the temperature rise. The hl9552 has a built-in 260m Ω conductive gallium nitride switch, which is packaged in qfn5*6. It has high integration, simplified periphery, and low standby power consumption. It is very suitable for fast charging power applications.

The charger adopts the design of secondary step-down circuit, and the output adopts the combination of yingjixin ip2738 two-way protocol chip + two-way ip6550 Synchronous Step-Down Controller. It supports blind power insertion and automatic distribution, and does not need an external MCU to control the interface power. The high-voltage filter capacitor adopts Fengbin and Zhongyuan electrolytic capacitors, and the output solid-state capacitor comes from emerald. The outer layer of PCBA module is wrapped with copper sheets for heat dissipation to improve the heat dissipation effect.