The charging head network got a USB-C charger launched by Aoda Power, this charger adopts a straight plate shape, equipped with fixed national standard pins, and looks like the original charger of a mobile phone. The charger has a single USB-C output interface, supports PD and PPS fast charging, and the USB-C port has a 20V output voltage, which supports charging laptops and mobile phones, and has good compatibility. Let's disassemble the 30W USB-C charger of Aoda Power Supply and take a look at the internal materials and design.
The charger is designed with a straight plate shape, and the shell is PC fireproof material, and the whole body is white.
The input housing is printed with the charger specifications.
Close-up of charger parameters.
Model: A829-200150C-CN1
Input: 100-240V 50 60Hz 08a
Output: 5v3a, 9v3a, 12v25a、15v2a、20v1.5a、3.3-11v3a
Manufacturer: Shenzhen Aoda Power Technology ***
The charger is equipped with fixed GB prongs.
The output is equipped with a single USB-C interface.
The measured length of the charger body is 4559mm。
The width is 4131mm。
The thickness is 2754mm。
Compared with Apple's 30W charger, this one produced by Aoda is much smaller.
Feel the size of the charger in your hand.
In addition, the net weight of the charger was measured to be about 62g.
Using the ChargerLab Power-Z KM003C, the USB-C port supports FCP, SCP, AFC, QC30/4+、pd3.0. PPS, DCP charging protocol.
PDO packets show that the USB-C port has 5V3A, 9V3A, and 12V25a、15v2a、20v1.5A five sets of fixed voltage levels, and 33-11V3A set of PPS voltage ranges.
After reading the appearance and test of this charger of Aoda Power, let's disassemble it and take a look at the internal materials and design.
First, pry open the charger housing along the housing seam, and the prongs are connected to the PCBA module through the shrapnel for power supply.
The prongs are connected to the shrapnel by crimping.
The PCBA module is fixed by a slot inside the housing.
Extract the PCBA module from inside the housing.
The transformer is filled and reinforced with glue and high voltage electrolytic capacitors.
The small plate at the output end is insulated with a plastic isolation board and fixed with glue.
The length of the PCBA module measured by vernier calipers is about 412mm。
The width of the PCBA module is about 365mm。
The thickness of the PCBA module is about 213mm。
Front view of PCBA module, soldered fuse in the upper left corner, safety X2 capacitor, NTC thermistor, differential mode inductor. Two high-voltage filter capacitors are welded in the lower left corner, the transformer is welded in the upper corner, and the USB-C female board and filter capacitor are welded in the lower right corner.
The back of the PCBA module is provided with a plastic insulating board and an aluminum alloy heat dissipation plate.
At a glance on the back of the PCBA module, four diodes are welded in the lower right corner, the primary controller is welded to the left, the switch tube is welded in the middle position, the feedback optocoupler is welded in the upper left corner, and the synchronous rectifier chip is welded below. The USB-C output board is soldered under the synchronous rectifier chip, and a plastic insulating board is inserted in a groove between the primary stages.
Through the observation of the PCBA module, it is found that the 30W fast charging charger of Aoda adopts the design of QR switching power supply, adopts the primary controller of Maoruixin and the switch of Shenai Semiconductor, and adopts the synchronous rectifier chip of Maoruixin, and the output voltage is adjusted by the protocol chip through optocoupler feedback. Let's start with the input to understand the information of each device.
The input of the PCBA module is welded with fuse, safety X2 capacitor, NTC thermistor and high-voltage filter capacitor.
The input fuse is from Walter and has a size of 25a 250v。
The safety x2 capacitor is from Chenggong Industries, and the specification is 0022μf。
The NTC thermistor is from Jiuyin, silkscreen 7S050M.
The rectifier diode is silk-screened R3MF, and four are used to form a bridge rectification.
Two high-voltage filter capacitors, blue Y capacitors, filter solid state capacitors and USB-C female board are welded on the side.
The two high-voltage filter capacitors are ZTC brand and have a specification of 22 F400V.
Differential mode inductor jacket heat shrink tube insulation.
The primary main controller chip is from Murray, model MK2687P, which is a multi-mode PWM controller optimized for PD fast charging applications. The chip supports a wide supply voltage range without the need for additional windings or step-down circuitry. The chip adopts adaptive multi-mode control, and will operate in burst mode at light load to improve efficiency. It supports the peak load function, and the maximum switching frequency can reach 130kHz.
The Mk2687P provides comprehensive protection functions, including output over-voltage protection, VCC over-voltage protection, over-power protection, brown in out, rectifier short-circuit protection, sampling resistor short-circuit protection, etc.
The filter capacitor that supplies power to the main control chip comes from Aihua, and the specification is 100V47μf。
The primary switch is from Shenai Semiconductor, model SIF8N65EA, NMOS, withstand voltage 650V, conduction resistance 800M, and TO252 package.
The transformer is welded on the side of the PCBA module, and the bottom of the transformer is glued and reinforced.
The transformer is wound with PQ-20 magnetic cores and is equipped with plastic insulating brackets.
The blue safety Y capacitor comes from Huaxin Ann.
Everlight EL 1018 optocoupler is used for output voltage feedback regulation.
The synchronous rectifier chip comes from Maoruixin, model MK1718, and the chip integrates 100V 85M synchronous rectifier tube, support CCM, DCM and QR working modes. MK1718 adopts self-powered circuit with independent intellectual property rights, and supports both positive and negative output applications.
The output is soldered with a USB-C interface board and a filtered solid-state capacitor.
The output filter capacitor is from Emerald and is specified at 470 F25V.
The other filter capacitor is rated at 180 F25V.
Solder the USB-C receptacle and protocol chip on the USB-C interface board.
The back side is welded with a VBUS switch and an ESD protection diode.
The protocol chip adopts Yingjixin IP2723T, which has passed the USB IF Association PD30 PPS certification, TID: 3135, is a multi-protocol integrated fast charging protocol IC for USB output ports. It supports a variety of fast charging protocols, including USB TypeC DFP and PD20/3.0、pps 、hvdcp qc4、qc4+、qc3.0/2.0、fcp、scp、afc、mtk pe+ 2.0/1.1、apple 2.4a、bc1.2 as well as Samsung 20a。
The IP2723T can provide a complete Type-C solution for unidirectional output applications such as adapters and car chargers. In addition, IP2723T has a high level of integration and rich functions, and only requires very few peripheral components for application, effectively reducing the size of the overall solution and reducing the BOM cost.
Yingjixin IP2723T data information.
The charging head network dismantled and learned that Yingjixin IP2723T has been used by many brands such as Flashmagic, Momis, REMAX, Maiduoduo, Huakelong and other brands of 20W chargers, and has also been used by Momax 65W 2C1A GaN fast charging charger, Nubia 65W USB PD GaN charger, Nubia 1A1C 45W Deuterium Front GaN fast charger and other GaN chargers. More than 100 products from well-known brands such as Beijing Manufacturing, Huawei, Samsung, and Tesla have been adopted.
VBUS switch tube silk screen printing 0310.
Four TVS diodes are used for ESD protection of the USB-C interface.
NTC thermistors are used to detect the internal temperature of the charger and provide overtemperature protection.
The USB-C receptacle is fixed by via hole welding, the yellow rubber core is not exposed to copper, and the word MUP is printed on the shell, which comes from Shenzhen Dehaiwei Industry.
A list of all dismantling and a family photo.
This 30W USB-C fast charger of Aoda Power uses a white body and is equipped with fixed GB pins. The charger is equipped with a single USB-C port, has a 30W output power, supports 20V voltage output, and also supports 33-11V3A PPS fast charging, support fast charging for laptops, Apple mobile phones and mainstream Android phones such as Huawei and Samsung, and the fast charging compatibility is very good.
Through the dismantling of the charging head network, it was learned that the charger of Aoda Power Supply is soldered by two PCBs combined, and a plastic insulating board is provided between the PCBs. The charger adopts the Marui power supply scheme inside, using the MK2687P main control chip and the MK1718 synchronous rectifier chip. The primary switch is from Shenai Semiconductor.
The output protocol chip of the charger comes from Emerald, the protocol chip adopts Yingjixin IP2723T, equipped with NTC thermistor for overheating protection, and the corresponding CC and DP DM pins are also equipped with TVS diodes for electrostatic protection.