Disassembly report: MIWU Zhenmiao 65W 2c1a Gan charger

Under the Xiaomi ecological chain, the brand MIWU has launched a Zhenmiao 65W Gan charger, which has red and green styles, and is equipped with 2c1a interface. Two C ports support 65W fast charging, which can be used by blind plug-in. When used at the same time, it supports 45W + 20W dual port fast charging, which can meet the power demand of MacBook and iPhone 12 at the same time. The usb-a port supports up to 30W fast charging and Huawei 22.5w SCP fast charging. Today, I'd like to share with you the disassembly of this charger to see how its internal design materials are.

1、 Appearance of MIWU Zhenmiao 65W Gan charger

The charger adopts a long column shape design. The body shell is divided into two parts, which are sprayed with green gold paint respectively. The touch is smooth, and the transition between each side of the waist is smooth. 65W Gan printed in gold. The charger parameters are printed on the input housing

Product Name: miwuzhenmiao Gan fast charger

Model: zpq651cn-3

Input: 100-240V ~ 50 / 60Hz 1.5A

Single port output:

USB-C1/C2:3.3-11V3A、5V3A、9V3A、12V3A、15V3A、20V3.25A

USB-A:4.5V5A、5V4.5A、9V3A、12V2.5A、20V1.5A

Dual port output:

C1+C2:45W+20W(65W MAX)

C1+A:45W+18W(63W MAX)

C2+A:5V3A

Three port output:

C1+(C2+A):45W+5V3A

Manufacturer: Zhaowen Electronics (Shenzhen) Co., Ltd

Producer: Beijing MIWU Technology Co., Ltd

The product has passed 3C certification.

It adopts foldable GB pin, which is easy to carry and will not scratch other equipment in the bag.

The output top is equipped with 2c1a three output interfaces, two C ports, black rubber core without copper exposure, and usb-a port is green rubber core.

The measured length of charger body is 65.84mm by vernier caliper.

The width is 30mm. The thickness is 34.08mm. The volume of charger is 67.31cm ³, So the power density is about 0.97w/cm ³, The best multi port Gan charger.

Compared with apple 61W charger, the volume advantage is very obvious.

The intuitive feeling of holding it in the hand. The net weight is about 101g. Using chargerlab power-z kt002 to detect the output protocol of usb-a port, the display supports apple 2.4a, Samsung 5v2a, DCP protocol, and qc2.0 / 3.0, AFC, FCP, SCP, pe2.0 multiple fast charging protocols. Kt002 is used to detect the output protocol of usb-c1 port. Compared with a port, it also supports pd3.0 and PPS fast charging protocol.

In addition, the usb-c1 port also has five fixed voltage ranges of 5v3a, 9v3a, 12v3a, 15v3a, 20v3.25a, and a PPS voltage range of 3.3-11v3a. Using KT002 test found as like as two peas of C1 port, the USB-C2 port output protocol is the same. The PDO message is the same, so the output performance of the two C ports is the same. It supports power blind insertion and is very convenient for daily use.

2、 Disassembly of MIWU Zhenmiao 65W Gan charger
iPhone Charger Cable
The input shell is disassembled, and the pin and PCB board are connected and powered through AC wire. The input end of the charger is provided with a small plate, the top and side of the charger are provided with heat sinks to help heat dissipation, and the high-voltage side is wrapped with insulating tape. The output end is provided with three small boards, and the back of the small board where the usb-c1 mother base is located is pasted with a heat conduction pad. Motherboard front overall view, capacitors, transformers and other glue reinforcement. At the back of the motherboard, the optocoupler and two y-capacitors are across the primary stage. The primary side is equipped with white fuse, main control chip and Gan power switch tube, and the secondary side is equipped with synchronous rectifier controller and rectifier tube.

After observing the circuit of the charger, it is found that this Gan charger adopts the current popular switching power supply constant voltage output, two independent buck three port output architecture, in which the usb-c1 port is a single channel, the other 1a1c port is a channel, and the three port output power is intelligently distributed. Now we start from the input to understand the whole circuit design.

Summary of dismantling charging head net

MIWU Zhenmiao 65W Gan charger is designed with a regular column shape, but the color matching of the body is unique, not the same black and white model. The whole charger is very compact, and the power density reaches 0.97w/cm ³, In the multi port Gan charger is very rare, easy to carry out. In addition, the charger supports mainstream fast charging protocols such as QC, AFC, FCP, SCP, pe2.0, PD and PPS, with very good compatibility, meeting the fast charging needs of mobile phones and laptops of Xiaomi, Huawei, apple and other brands.
iPhone 12 charger cable
Through the disassembly of the charging head network, we know that the internal components of this charger are designed in a three-stage layout, which is clear and clear. The input and output terminals are equipped with small boards to make full use of the internal space. The use of chip fuse and terrixiang y capacitor can save space for the charger.

The switching power supply of the charger is composed of an-senmei ncp1342 with nano micro nv6115 Gan power chip, and MPs mp6908a with Weizhao synchronous rectifier MOS. Zhirong sw3516h + Ruijun ruh4040m2 are used in the two-way DC-DC circuits at the output end, and the overall material is mainstream.