Hi, guys. Welcome back to ChargerLAB.
It's been a while since we took apart a car charger last time.
And today, we got a 100W car charger from MOMAX.
It's equipped with two USB-C ports and a USB-A port.
Let's go ahead and take it apart to see how it can achieve high-power output.
The brand name, product, and most critical features are on the front of the box.
And the compatible devices are on the side.
The specs info in different languages are on the back.
Take out the car charger from the box.
It adopts an aluminum case with positive contact on the bottom.
The 100W and momax are on the other side.
It can support USB PD3.0.
And let's take a closer look at the specs info.
Model is UC17.
It can support input of 12-24V 14A.
And the total output can be up to 100W.
As mentioned, there're two USB-C ports and a green USB-A port on the output panel.
A circle of LED light is on edge.
So, after connecting to the power supply, you can even get the working status in a dark environment.
The weight is 37.6g (1.33 oz).
Next, let's use the spudger to pry along the gap between the top panel and the aluminum case.
We can see the light-guiding plastic.
And 12 LED lights are placed on the edge of the circular PCB.
Take out the entire module.
There is a long strip PCB welded on the circular PCB.
A thermal pad is attached to the PCB to enhance heat dissipation.
Three inductors and capacitors are on the front.
Most SMD components are on the back.
There're multiple magnet wires inside the positive spring to reduce the heat generated by high current.
A fuse chip is connected in series with the positive contact for input overcurrent protection.
The solid capacitor for input filtering is from Shengtong Electronics.
220μF 25V.
The synchronous buck-boost controller is from Toll Microelectronic,
which adopts peak current-mode control.
It supports 34V input voltage, and the output voltage can be adjusted by FB pin and I²C interface.
The operating frequency is controlled by an external resistor and can be set between 100KHz-1MHz.
The toroidal core inductor for buck-boost is insulated with heat-shrinkable tube.
Four MOSFETs for synchronous buck-boost are under the inductor, which can form an H bridge.
They're from Allepic Semi and adopt PDFN3030 package.
30V, 4.1mΩ.
The other two toroidal core inductors are used for USB-C2 and USB-A ports.
A synchronous buck converter chip is under two inductors from Toll Microelectronic.
Withstand voltage is 30V.
The other same buck converter chip is on the other side of the PCB.
This is the protocol chip of USB-C1, which is from Toll Microelectronic.
It supports a single USB-C port and has obtained USB-IF PD3.0 certification.
The other protocol chip for USB-C2 and USB-A is also from Toll Microelectronic.
It can support dual USB ports and a variety of fast charging protocols.
Those two solid capacitors for output filtering are 220μF 25V.
The other solid capacitor is also 220μF 25V, from Shengtong Electronics.
It's wrapped with heat-resistant tape for insulation.
Two VBUS MOSFETs are from Allepic Semi and adopt PDFN3030 package.
They're used to control the output of USB-C1 and USB-A, respectively.
30V, 5.5mΩ for each.
This same VBUS MOSFET is used to control USB-C2.
Well, that's all components of this 100W car charger from MOMAX.
Like most car chargers we took apart before,
it consists of two PCBs to make full use of the space.
There're two output switching power supplies and three buck-boost circuits
to convert the 12/24V DC into 5-20V DC.
And those three ports can support automatic power distribution.
So, you can enjoy the fast charging experience from your home to your car.
OK. That's all for today's video.
Please drop a like, leave your comments, and subscribe to us if you like this video.
And I'll catch you guys in the next video. Bye.