The world's martial arts, the only fast is not broken, mobile phone charging is faster.At present, the manufacturers of fast charge technology roughly divided into two kinds, one is Qualcomm high-voltage fast charge, the other is VOOC low-voltage high-current fast charge.
The two technologies have their own characteristics, high-voltage fast charge on the wire less demanding, good compatibility, and low-voltage high-current fast charge in addition to the agreement, manufacturers often require wire-specific support. High-pressure fast FCP, and then launched a low-voltage high-current SCP fast charge.
Get the Huawei charger to support SCP fast charge technology, to disassemble to readers. The charger model: HW-050800C1WH, the output parameters: 5V / 2A, 5V / 8A.
White shell, this is more rounded
GB dismantling, you can fold, when not convenient to take outside
This pin is the parameters of laser engraving, model HW-050800C1WH, the input is 200-240V, not the general wide voltage output: 5V / 2A, or 5V / 8AMAX, Huawei Technologies Co., Ltd., 3C certification
This uses the orange-red USB-A interface, the contact shrapnel is widened
Another Huawei, 4.5V / 5A version of SCP super fast charge, the right is 8A version of the fast charge
USB port in different directions
5A version can not be folded, 8A version can be folded feet
Width 46mm
Thickness 28mm
Using the ChargerLab Power-z FL001 protocol test, it was found that only SCP mode fast charge is supported
Huawei several quick charge head, left SCP 8A, pd head, SCP 5A, FCP + QC2.0 dual protocol leader
Four single fast charge USB output contrast
Lost to SCP mode with the ChargerLab Power-z FL001, and then test the maximum power with the EBC-A10 load, the large current drawn to 8A is seen
Test twice, EBC-A10 shows are 8.2A, then go to power protection
Huawei 5V8A_ power test, the software records up to 8.1A
Try the 8A high current load for 2 minutes and it is firm
Dismantling
Can open the shell without damage
Inside is the card slot, Glue, PCB module pulled out
Two PCB components, the middle is seen filling the black plastic, fixed and auxiliary thermal conductivity.
The middle there is a whole plastic protective shell, the upper and lower two-tier circuit board fixed as a whole.
Weld open two PCB, all objects, you can see the middle of the white plastic frame is responsible for connecting up and down the two circuit boards.
The middle of the two sides PCB, PULSE transformer is very conspicuous, check in the official website of the PULSE, no this model, visual determination of products.
On both sides of the PCB on both sides, the left is the secondary recognition of synchronous rectification, the left is the primary rectifier plus switch.
The left circuit board, RT7207, identification chip, supports synchronous rectification.
Synchronous rectifier, Schottky diode in parallel to improve efficiency, ON Semiconductor NTMFS5C612NL, screen printing 5C612L.
Output Switch, Diodes PMOS DMP2002UPS.
2512 3 milliohm alloy resistance is used to detect the output current, the output overcurrent detection abnormal over-current shutdown output.
The left side of the output board has two solid capacitors on the front, 6.3V / 820μF, output filtering. AC input fuse on this board, connected to the primary board through the plastic frame connection.
Right primary board, RT7786, primary PWM
The three MLCCs in series are conventional Blue Y. Three series improve the insulation level and reliability.
Input Fuse On another circuit board, you can see a primary input EMI circuit with a thermistor sandwiched between the coil and the X capacitor.
Beginning with Taiwan's Lilong capacitors.
Two 400V / 22μF.
Switch tube STFU13N65M2.
