Last year, Xiaomi introduced a 45W PD power supply, which is compatible with QC2.0. QC3.0 becomes a hot PD power supply. It matches the mobile power supply of its own Ziimi 10, and the PD power can reach 100W. Xiaomi’s own notebook also Switched to PD charging, the power reached 65W.
However, the high-power PD power supply has not been retailed. At this time, Xiaomi introduced a 65W PD power supply that is free to change the line. Plus, there is already a 65W PD charging mobile power supply on the market. The arrival of high power has one more choice. This millet 65W PD The power supply model is CDQ07ZM, which supports up to 5 voltages and is compatible with QC2.0 and QC3.0.
First, Xiaomi USB-C power adapter (65W) out of the box
Inside the white box is a card holder that protects a power supply and a charging cable.
White power supply, the same as the previous millet 45W power supply style, standard with a 2 m UBS-C charging cable.
On a USB-C output, without USB-A.
The other side of the power supply.
Folding foot design, convenient collection.
Parameter printing, belonging to Xiaomi brand, Jiangsu Ziimi Electronic Technology Co., Ltd. Production.
On the right is the Xiaomi 45W PD power supply. The outer casing does not see any difference, and the volume is the same.
Like the 45W power supply, the same as Jiangsu Ziimi Electronic Technology Co., Ltd. production.
The same USB-C output port.
It happens to have a 65W power supply (Tian Mi OEM) as standard on a millet notebook. The three look like the outer casing. The volume is the same as the millet 65W, the rice meter is 65W, and the millet is 45W.
Millet notebook standard 65W power supply (Tian Mi) net weight 141g.
Millet 65W net weight 114g.
Millet 45W net weight 100g.
Millet 65W measurements, width of about 60mm.
The other one is 57mm wide.
Thickness 28mm.
Tested with ChargerLab power-z FL001SUPER, supporting both QC2.0 and QC3.0 modes.
ChargerLab power-z FL001SUPER tester test, PD PDO broadcast has 5 kinds of voltage: 5V3A, 9V3A, 12V3A, 15V3A, 20V3.25A. The maximum power is 20V 3.25A, power 65W.
ChargerLab power-z FL001SUPER test the line of the machine, found that there is an emark chip, the maximum support power is 20V5A 100W, the system is passive line, the line manufacturer is: 0x24CE. As we all know, no EMAKE wire supports up to 3A current, then Even if 20V is 60W, this 65W power supply with emark chip wire can reach 65W power.
Second, Xiaomi USB-C power adapter (65W) disassembly
The disassembly and the 45W PD power supply are the same, the crowbar opens the cover.
The entire front heat sink.
There are also heat sinks on the back.
Remove the heat sink and the heat sink on the front heats the transformer.
2. The reverse side of the board is covered with the thermal paste.
This package has not been seen in previous disassembly.
Infineon's IPL60R180P6, Cool Mos? P6.
Ultra-low Qg and conduction resistance, and the package size is much smaller than our common TO220, and it is convenient for heat dissipation design. The reverse via and front insulation tape are ideal for compact high power density power supplies. Use, save space and improve efficiency.
The primary adopts ON Semiconductor's offline quasi-resonant controller FAN604H.
Xiaomi 65W is a high-precision low-temperature floating resistance in the key part of the power tube current detection to ensure the stability of high-power output.
Millet 65W PD power output uses synchronous rectification scheme, Ansonmei FAN6240 controller + Toshiba TPH4R10ANL synchronous rectifier combination.
FAN6240 was found to be widely used by disassembly.
Toshiba's synchronous rectifier, with a withstand voltage of 100V and a conduction resistance of only 3.3 milliohms, is ideal for synchronous rectification and reduces heat generation.
There is also a TI regulator, TPS70950DBV, which has an enable input, a maximum input withstand voltage of 30V, an output current of 150mA, and an ultra-low quiescent current.
Let's look at the front side. The high-voltage filter capacitor comes from Zhongyuan Electronics, 400V120μF. The output is connected by two 25V680μF solid capacitors in parallel.
Input fuse, X capacitor, common mode inductor.
A small capacitor that powers the controller.
Wei Quan WT6632F USB PD controller. All-inclusive carrier.
Rectifier bridge 6A 1000V.
Y capacitor.
WT6632F and TPCC8104, commonly used switch tubes for purple rice, are also used on the 45W power supply.
Large capacitors and circuit boards have soft pad buffers.
Family portrait.
Third, the charging head network disassembly summary
Millet's 65W PD power supply, with the same volume as 45W, has increased 20W power. Infineon CoolMos has contributed to the highest possible power density in a small volume.
High-precision resistors give the power supply stability under high load and high temperature, and the output voltage and protection point are not affected by the operating temperature.
Both the transformer and the power tube are cooled by the entire heat sink to reduce the temperature of the charger. The output solid capacitor provides longer working life and reliability.
