Disassembly report: Netease Zhizao 18W USB PD fast charging charger

Recently, Netease yanxuan official mall launched an 18W USB PD fast charging charger, which has the characteristics of small size and strong performance. Officially, with a certified usb-c to lightning fast charging cable, the iPhone can be charged to 50% power in 30 minutes; At the same time, the technology of apple is also used. At present, this charger has arrived at the editorial department of charging head network. How about the internal materials and workmanship of the product? I will share with you immediately.

Previously, the charging head network has shared the disassembly of Netease Zhizao 65W USB PD fast charging charger for you. You can click the blue font to learn more.

1、 Appearance of Netease intelligent 18W USB PD fast charging charger

This USB PD charger made by Netease Zhizao uses a pure white outer packaging box. The front of the charger outlines the appearance picture of the product. The logo of the product is in the upper left corner. It looks very simple.

The back of the box is printed with the product's parameter information and manufacturer's information.

In addition to the charger, there is an instruction manual in the packing box.

Netease Zhizao charger adopts pure white shell, the main part adopts piano baking varnish bright surface treatment, the output end panel is matte treatment, and is equipped with a ubs-c output interface.
Apple Charger Cable
The usb-c output interface is in the middle of left and right, slightly upward, with built-in white rubber core, and the end face is not exposed to copper.

Input panel I light gray, with GB fixed pin design, pin side printed with detailed specifications.

Product Name: ubs-c PD fast charging power adapter (18W), product model: nit-tac-01-pd18w-wh, manufacturer: Hangzhou Netease yanxuan Trading Co., Ltd., the product has passed CCC certification. Input support 100-240V ~ 50 / 60Hz 0.5A, output: 5V / 3a, 9V / 2a, 12V / 1.5A, 3.3-5.9v/3a, 3.3-11v/2a (18W), the bottom is each charger independent s / N code.

Compared with Apple's 18W PD charger, Netease smart charger looks more compact.

iPhone 12 charger


The thickness is equal to the diameter of a dollar coin.

The net weight of the charger is about 43g.

Using chargerlab power-z kt001 to detect the charger output protocol, it shows that only USB DCP protocol is supported.

Continue to detect the PDO message of the charger. The display supports USB pd3.0 PPS fast charging protocol. The fixed voltage ranges are 5V / 3a, 9V / 2a, 12V / 1.5A, and the PPS voltage ranges are 3.3-5.9v/3a, 3.3-11v/2a, which are consistent with the nominal parameters.

2、 Disassembly of Netease intelligent 18W USB PD fast charging charger

The shell is opened from the input end of the charger, and the pin end is connected with the PCB board through two shrapnel for power supply. The inner wall of the shell is provided with a fixing groove to position the PCBA module.

Taking out the internal PCBA module, it can be seen that there are two PCB boards, the upper small PCB board is the secondary, and the lower large PCB board is the primary; Between the two PCB boards is the transformer, and between the small board and the transformer is fixed and supported by a white plastic framework, which plays an insulating role.

iPhone 12 charger


On the primary PCB board, the right side is mainly transformer, and the left side is input filter electrolytic capacitor, delay fuse and other devices. The gap is treated with white glue injection, which plays the role of fixation and heat conduction.

The input end adopts two electrolytic capacitors in parallel, and the specification is 400V 15 μ F. There is an I-shaped inductor between the electrolytic capacitors. The delay fuse and surge suppression resistor are fixed with silica gel.

The PWM controller ob2632 specially developed by Ambro electronics for usb-pd application is one of the few manufacturers in the industry that can provide the overall solution of usb-pd adapter with ob2613 protocol chip. It provides a wide range of VDD working voltage range, so that customers can use traditional transformer design and avoid using LDO stabilized voltage circuit to supply power to PWM chip. At the same time, its unique loop adaptive technology can fully meet the requirements of wide output range of USB PD applications. With its strong technical strength and brand advantages, ob2613 has achieved mass production in Dell, Lenovo and other first-line factories.

Apple Charger Cable

Charging head network learned that the chip had been used by JDB jindianbao 18W USB PD charger and kunxing 45W qc4 + charger.

Summary of dismantling charging head net

Compared with the same power level products, this 18W USB PD fast charging charger made by Netease has smaller volume and better portability. Pure white body, simple design. It has a maximum 18W fast charging output and supports the latest USB pd3.0 PPS protocol. It can support the fast charging of mobile phones of iPhone, Huawei, Xiaomi, Samsung and other brands.

According to the disassembly of charging head network, this product adopts the fast charging solution of Ambro from AC-DC power supply to USB PD protocol. The scheme has the characteristics of high integration, easy debugging and low system development cost; At the same time, the USB PD protocol chip ob2613 is certified by the USB if Association, and its compatibility is guaranteed; The primary and secondary circuit boards inside the charger are arranged independently, and the secondary circuit boards are completely separated and fixed with insulating covers, so the space utilization rate is high and the charger is more safe and reliable.