The front of the packaging box is printed with mophie brand, appearance map and name of the charger, etc., and the top is equipped with hooks to facilitate the product offline display.
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The bottom of the box is printed with the relevant certification information of the charger.
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Only the charger is in the package.
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The charger adopts PC material white shell, high bright surface treatment at the waist, round transition on both sides, and the input end is equipped with fixed national standard pins.
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The front of the body is printed with the mophie brand logo.
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The charger parameter information is printed on the input housing
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Model: CHG-WALL-PD-20W
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Input: 100-240V to 50\/60HZ 0.5A
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Output: 5V3A, 9V2.23A, 12V1.67A, 3.3-5.9V3A, 3.3-11V2.2A
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Manufacturer: Shenzhen Aoda Power Technology Co., LTD
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Producer: Zige (Shenzhen) Technology Development Co., LTD
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The charger has passed CCC certification.
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The output top surface is equipped with a single USB-C port, black rubber core.
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The measured length of the charger body is 41.11mm.
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The width is 38.78mm.
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The thickness is 26.84mm.
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And Apple 20W charger intuitive comparison, the overall is a little smaller.
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The intuitive feeling of holding it in your hand.
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The net weight is about 46g.
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Use ChargerLAB POWER-Z KT002 to detect the USB-C port output protocol, and display support for Apple 2.4A, Samsung 5V2A, DCP protocol, as well as QC2.0\/3.0, AFC, FCP, SCP, PE2.0, PD3.0, PPS fast charge protocol.
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At the same time, it is measured that there are three sets of fixed voltage gears of 5V3A, 9V2.23A and 12V1.67A at port C, and two sets of PPS voltage gears of 3.3-5.9V3A and 3.3-11V2.2A.
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Second, mophie 20W charger disassembly
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The input shell is disassembled, the ultrasonic welding package is made, the metal shrapnel and pin are fixed together, and the contact electrified design is made.
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The measured PCB board length is 36.86mm.
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The broadband is 34.93mm.
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The thickness is 21mm.
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PCB board front view, capacitors, transformers and other devices reinforced by glue, the primary stage is equipped with insulation board.
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The back of the PCB board is at a glance, the first stage is hollow-out to pass through the isolation board, and the back is equipped with a switching power supply master chip, optocoupler, synchronous rectifier chip, protocol chip and output VBUS switch tube.
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Through observation, it is found that the charger uses a highly integrated QR switching power supply scheme, and the protocol chip controls the output voltage architecture. Below, we will understand the information of each device from the input side.
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Viewed from the corner of the module, the primary side has a fuse, NTC resistor, electrolytic capacitor, I-inductor, master chip power supply capacitor and transformer.
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Close-up of the delay fuse, specification 2A 250V.
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Close-up of the NTC surge suppression resistor, which is used to suppress the upsurge current.
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The input terminal uses four diodes for bridge rectification.
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Two high-voltage filter electrolytic capacitors are from Zhibao.
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One of them is 400V 15μF.
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The other size is 400V 22μF.
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I-inductor jacket heat shrink tube protection.
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The power supply capacitor of the main control chip is from Aihua, and the specification is 50V 4.7μF.
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The main control chip of switching power supply adopts OB2631U, with integrated DCM PWM controller and high voltage switching tube, which is optimized for high performance, low standby power consumption and low cost switching power supply. In addition, complete protection features are provided, including cycle current limit, overload protection, undervoltage lock and internal overheat protection.
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The transformer sleeve is insulated with a plastic shell and reinforced with glue, and the top is inked with information.
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The output end is at a glance, with a Y capacitor and two output filter solid state capacitors, and the USB-C base is reinforced with a steel jacket.
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EL 1018 optocoupler, for primary and secondary communication, feedback to adjust the output voltage.
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Y Capacitor close-up.
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Xinmao Micro high-performance switching power synchronous rectifier chip LP15R060S, compatible with a variety of switching power control systems, support DCM and CCM multiple working modes. It adopts patented rectifier opening judgment technology, which can effectively avoid the wrong opening of the driver chip caused by excitation oscillation.
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In addition, it has a very fast turn-off speed, which can greatly reduce the efficiency loss caused by turn-off delay under CCM operating conditions. The special VCC power supply technology can ensure that the chip will not work under power. In addition, the LP15R060S also integrates VCC undervoltage protection, overvoltage clamp and drive foot interference and other technologies, and adopts SOP7L package.
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Xinmao Micro LP15R060S data information.
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Two output filter solid state capacitors from emeralds, both 16V 330μF.
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The protocol chip adopts the British Chipset IP2723T, which has passed the USB IF Association PD3.0 PPS certification, TID: 3135, is a fast charge protocol IC that integrates multiple protocols for USB output ports. Supports a variety of fast charge protocols, including USB TypeC DFP, PD2.0\/3.0, PPS, HVDCP QC4, QC4, QC3.0\/2.0, FCP, SCP, AFC, MTK PE 2.0\/1.1, Apple 2.4A, BC1.2, and Samsung 2.0A.
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The IP2723T provides a complete TYPE-C solution for unidirectional output applications such as adapters and car charging. In addition, IP2723T has high integration and rich functions, and only needs a few peripheral devices in application, effectively reducing the size of the overall solution and reducing the BOM cost.
The volume is smaller than the original, and the compatible charging protocol is more than the original, but the charging speed is the same.