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Previously, the charging head network has passed the "original 10W charger enough?"iPadMini 5 kinds of chargers run the big competition" for everyone to analyze the charging speed of each charger in detail, and finally came to the conclusion that it is recommended that each person start a new iPad user to replace the standard with a USB PD fast charge charger 10W charger.However, the replacement is replaced, the charging head network can not stop the disassembly of this 10W standard charger. After all, from the hands of Apple's supply chain, the internal materials and structural design of the charger are worth learning and learning. The following charging head network will share the internal disassembly of the Apple A1357 charger.
First, Apple A1357 original charger appearance
Apple A1357 charger appearance is consistent with the previous version of the 12W charger, both with small square design, pin detachable, folding pins, USB-A output interface.
Compare the size of the Apple 10W charger and the 12W charger, which is almost the same size.
The side laser engraving parameter information of the charger is available in English, Simplified Chinese, Traditional Chinese, and Korean. The model of the charger is A1357, which supports 100-240V, 0.45A 50-60Hz input, and supports 5V/2.1A output. The manufacturer: Flextronics Power Supply (Dongguan) Co., Ltd. has passed KC and CCC certification.
The standard USB-A output interface has a serial number printed on the interface.
Because the pins of this 10W charger are detachable, the different pins will have different overall weights. The net weight of the fuselage is about 49g without pins.
Use the ChargerLAB POWER-Z FL001SUPER tester to detect the charger's output protocol and display support for APPLE2.1A.
Use this charge to giveiPhoneWhen 8 Plus is charged, the charging voltage is 5.07V, the current is 2.05A, and the charging power is about 10.4W. Although it can't hurt the 18W fast charge, it is better thanMobile phoneThe standard 5W charger is still fast.
Second, Apple A1357 original charger dismantling
First, violently disassemble the charger case and remove the back PCBA module.
The internal PCB board is powered by two silicone cables. The front input terminal is provided with two electrolytic capacitor filters. The middle is the Flextronics custom transformer, which uses multiple insulated wires. The USB-A interface uses a solid capacitor and an electrolytic capacitor respectively. Filtering.
Viewed from the side, there is a primary switching tube near the edge of the transformer.
The output filter uses a solid capacitor and a daily electrochemical parallel.
Because the output power of the charger is relatively small, the primary switching tube does not increase the auxiliary heat dissipation. From this point of view, it can also be seen that the hollowed-out design between the primary and secondary on the PCB board enhances the insulation.
Look at the back of the PCB board, there are few components, the design is relatively simple, there are many red glue for wave soldering.
The charger's primary PWM master chip comes from Dialog, model iW1691.
The iW1691 is a high performance AC-DC controller designed to drive N-channel power MOSFETs for peak current mode PWM flyback power supplies. The iW1691 is a power adapter for applications such as mobile computing and communications, and backup power supplies in consumer electronics. It complies with US DoE's external power standards and the EU Code of Conduct, Version 5, Level 1 efficiency standards, with no load power consumption of less than 100mW. .
The secondary side uses a Schottky diode rectification from DIODES, model S10U45S, which is also useful in the Apple 5W charger A1443 (National Edition).
Summary of the charging head network disassembly
The original Apple A1357 charger disassembled this time, although the power is slightly reduced compared to the 12W charger, but from the inside of the charger and workmanship, it is still very apple. The charger is manufactured by Flextronics, which uses Niccon Electrolytic Capacitor Filtering and uses the Dialog iW1691 as the primary controller and the secondary uses the DIODES Schottky diode for synchronous rectification. The main components are international brands, and are used in several other Apple chargers.
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