This year, Xiaomi launched a pocket version of 10000mAh fast charge mobile power.
Not only is it designed very small, but also interface multi-performance. Recently, the charging head network found that Xiaomi launched a new design pocket version of Pro to charge treasure, I believe many people are also very concerned about this new product.
For this purpose, the charging head network will start this charging treasure for the first time, and an east price is 199 yuan. This product is also a small small and fast charge, but it has achieved amazing 33W compared to the last generation of power. In addition, the product fuselage is very empty, and it is very good to use. Let’s take a look at the detailed dismantling of this charging treasure to explore the difference between internal workmanship.
First, Xiaomi 33W charging treasure appearance
The positive packaging box is printed with Xiaomi brand logo, charging treasure name and appearance.
The side is printed with small port, 33W max fast charge, support TYPE-C two-way fast charge, USB-A output, TYPE-C input / output five big sales points.
The back is printed with product parameters and has anti-counterfeiting stickers.
Packaging contains charging treasure, special data lines, and instruction manuals, charging treasure outside dust bag.
The data line is special is its own C to A adapter, itself is a CC short line.
Such a line, the 1A1C interface of charging treasure can be used, no additional wiring is required, and it is convenient to use.
The charging treasure is treated with the color, the front and the side shell, and the transition of the side is very round and the feel is very good.
The front of the fuselage is designed with XIAOMI brand words, very simple.
Body back shell matte processing.
And the back is printed with charging treasure parameter information
Battery type: lithium ion battery
Rated capacity: 5600mAh (5V3A)
Battery energy (rated / typical): 35.2WH / 36WH 9800MAH / 10000mAh
Enter: 5V3A, 9V2.5A, 12V1.8A
Output: 33W MAX
(TYPE-C): 5V3A, 9V3A, 12V2.25A, 11V3A MAX
(USB-A): 5V3A, 9V2.23A, 12V1.67A, 10V2.25A
(Double port): 5V3A
Manufacturer: Jiangsu Zimi Electronic Technology Co., Ltd.
The top is equipped with a power button and a 1A1C interface.
The measurement of the charging treasurer is 104.82 mm.
The width is 56.32mm.
The thickness is 26.16 mm.
Compared with Apple iPhone 13 Pro mobile phone, you have much smaller.
Take the intuitive feelings in the hand, smart and round.
The net weight is about 204g.
Used USB-A port support Apple 2.4A, Samsung 5V2A, DCP protocol, and QC2.0 / 3.0, AFC, and FCP fast charge protocols.
Also measure the USB-C port support QC2.0 / 3.0, AFC, FCP, PD3.0, and PPS fast charge protocols.
In addition, the PDO message shows that the C port also has 5V3A, 9V3A, 12V2.25A three sets of fixed voltage gear, and a set of PPS voltage gear positions in 5-11V3A. In addition, this charging treasure also supports Xiaomi private fast charge agreement, but it is not measured.
Second, Xiaomi 33W charging treasure dismantling
Unpacking the two parts of the outer casing, the battery is greased, and the black plastic shell and heat transfer pad are covered on the PCB plate.
A heat dissipation copper foil and an insulating paper are attached to the outer casing.
Black plastic shell and PCB plate use screws.
There is also a PCB board under the small plate, and between the plastic plates are isolated between the pads.
Removing the other sheets, the LED lamp isolation tank is fixed to the outer casing to prevent string light.
Two batteries are placed in the plastic frame to fix the protective resistance between the glue, and the temperature monitoring is performed, and the PCB plate is welded through the nickel belt.
The back of the plastic frame helps heat dissipation, and the nickel belt is wrapped in the insulating tape.
Both the two cells are Samsung INR21700-50E, the size is 21700, and the single capacity is 5000mAh. The battery is printed with precautions, fire danger, cannot be used for electronic cigarettes, disable installation, carrying or handheld.
The upper surface is provided with a power management chip, a battery protection chip, and a protective tube, and the thermistor is also soldered on this board.
Another inductor is provided on the other side.
The lifting pressure conversion adopts Nanxin SC8905. This is a two-way synchronous boost converter, which integrates 4 low-conducting power control, and the conversion efficiency is super high to reduce fever while minimizing the peripheral BOM, optimizes PCB space and cost. The chip uses a current control mode that supports super-wide 2.7V to 22V voltage input, which can effectively manage the charging of 2 to 4 batteries; when the system needs to get energy from the battery, the battery reversal discharge function can be realized.
The Nanxix SC8905 has an I2C interface, and the user can set up charging or discharge mode, charging current, VINREG voltage, reverse discharge voltage, current limit, switching frequency, etc. by i2C, and current limiting, switching frequency, etc .; charging voltage and current limit can pass external resistance set up. The SC8905 also supports internal current limiting, overvoltage / undervoltage protection, output short-circuit protection, and over temperature protection, ensuring that the system can adapt to various abnormalities.
The charging head network learned that there is also the use of Nanxin SC8905 products.
Barley MFI certification three-in-one mobile power
Push rice 10000mAh mobile power supply high
Green United MFI certification 10,000mAh two-way fast charge mobile power
Feiyu handheld three-axis anti-shake stabilizer
And other products. In addition, Nanxin’s AC-DC, DC-DC, and wireless recipient fast charge chip is also
Widely used in gallium nitride fast charge, car charger, wireless charger, etc.
The 2R2 inductance on the back is in the Nanxin SC8905 to perform charging and discharge.
Silk screen 3BR5 battery protection chip.
Next to a battery protection tube, a CSP package, a patch welding.
Connection pin closeup.
The second small plate front welding power button, USB female seat, and A port fast charge chip.
The other side is provided with an MCU, protocol chip, protective tube, and LED indicator.
Silk print ZMA 6232AU chip, purple microcomputer, used for electricity indicator, machine control function.
The USB-C port protocol chip uses Tiande FP6606. This is a high-performance USB PD3.0 protocol chip, there are currently two packages in TQFN-24 and TQFN-16, in addition to supporting USB PD3.0 fast charge, Tiande FP6606 can support QC4 +, QC3.0 , QC2.0, AFC, FCP, SCP, and Apple 2.4a are highly compatible with compatibility.
Tiande FP6606B detailed specifications.
Charging head network learned that the Tiande FP6606 chip has been
Zi rice 20 200W PD fast charge mobile power, purple rice 10 Pro mobile power
Xiaomi 10000mAh mobile power 50W super flash
Push rice 18W two-way PD fast charge mobile power exclusive version 1000mAh
Xiaomi 20000mAh mobile power 50W super flash
Many products are used.
USB-C port input Output switch protection switch tube is used in one generation AON7534, NMOS, withstand voltage 30V, and two pairs of tandem to prevent inverting.
The protocol chip of a silk-printing GF6R is used for A-port fast charge support.
Diodes DMT3020LDV dual NMOS, withstand voltage 30V for load detection and closing output.
Power button is welded.
Four LED power indicators, the outer casing ring prevents leakage.
The USB-C female jacket steel sleeve is welded, and there is also a plastic plate support at the bottom.
USB-A female closeup.
All disassembled, come to Zhang Quanjiao.
Charging head net solution summary
Xiaomi 10000mAh charging treasure pocket version of Pro uses the color of the teeth, the whole is very round, the style is also simple, and the LED light is a built-in light transmissive mode design. In addition, an A / C To C short-term, one can solve the problem of using two interfaces of charging treasure 1A1C, no additional lines.
Product design is not only for users to carry and quickly charge, and consider the overall beauty and feel as much as possible. Performance not only supports millet private fast charge agreement, meets the needs of millet users, but also supports 9V3A fast charge, you can charge the iPhone 13 new machine full speed, for Apple users, is also a very worth considering charging accessories.
The inside of charging treasure is provided with a plastic frame and a plastic plate to achieve sufficient insulation and reinforcement of the battery and PCB boards, otherwise you can do smaller, but millet still places safely in the first place. In addition, the plastic frame hollow helps heat dissipation, and a heat-dissipating copper foil is attached to the outer casing, and a thermistor is temperature monitored.
Charging treasure uses two Samsung 21700
Battery group formed in series;
The design architecture of the MCU + power management chip is used. The power control section selects the SC8905 of the Nanxin built-in MOS to achieve a streamlined peripheral design; Tiande FP6606B chip controls C-port input output voltage. The buttons and interfaces are electrostatically protected by TVS, and the overall materials are reliable.