As Apple’s official partner, Belkin is not only the first to launch the
Apple-certified three-in-one wireless charger, but also developed a variety of 7.5W magnetic
wireless chargers at the same time. Today we got a Belkin magnetic wireless
charger pad. If you wanna see more like that, please subscribe to us. Let’s go.
Firstly, let’s see the appearance of the product. The packaging is always the Belkin style.
The brand logo is in the upper right corner. The product is just printed on the front.
And here is the product introduction. Suitable for all series of iPhone 12 mobile phones
Extra-long 2m (6.6 ft.) cable. Cable management with strap.
There is one more thing, Requires 20W PD3.0 wall charger to
get 7.5W wireless charging speed.
And then, let’s unpack it.
We can see the charger, 2m cable and a thick stack of instructions.
The wireless charger and cable are black. The pad is circular, and the shell adopts plastic.
The front contact area is matted. Belkin logo is printed near the cable.
A rubber pad is attached to the bottom,
with Belkin logo printed in the center. Only input specifications are marked here.
It supports 5V2A, 9V2A, 12V1.5A input. This charger also uses USB-C
port and can only use with PD charger. The overall design is very simple.
Let’s take a look at the strap. The strap adopts leather with button design.
The cable management experience is pretty good, with Belkin logo.
As for the cable, Its length is about 2m (6.6 ft.),
and its diameter is about 4.3mm (0.17 inches). As for the charger, its diameter is about 56.8mm.
We found the wireless charging pad can be easily attached to the caliper.
That means there are magnets inside. The net weight of the wireless
charger is about 108.7g (3.83 oz). Let’s compare Apple’s original MagSafe charger.
Belkin’s diameter is slightly larger, and the pad is thicker than Apple.
And the cable of Belkin is thicker as well. But the cable of Apple is only 1m (3.3 ft.).
Let’s use Apple’s original 20W PD charger and ChargerLAB POWER-Z KM001C to test the performance.
It’ll show the special pop-up animation for MagSafe.
The input power of the wireless charger is measured to be about 8W in the end.
Ok, let’s start to tear it down. Firstly, it’s the rubber pad on the back
No screws were found after tearing it off. Continue to pry the plastic case along front edge.
It can be disassembled without damage, cause of the plastic clip design.
We can see that there is a coil inside. The magnets are on the top cover.
There are a total of 18 small magnets to form the magnet ring.
The logo of NuVolta is printed on the back of the PCB
That means the entire PCB module is designed by NuVolta.
We found that this wireless charger adopted fixed frequency voltage regulation
It consists of the input circuit, the voltage regulation circuit,
and circuit of wireless charging control and coil drive.
The input part has five cable cores soldered on the PCB board.
And use glue to reinforce and insulate.
Here is a PD Sink chip, model is Hynetek HUSB238, which is used to make this wireless charger support PD fast charging.
An inductor is in the center.
It forms the voltage regulation circuit with the nearby MPS MP2229,
to power the wireless charger with power stage. This MPS chip is highly integrated design,
with built-in controller, step-down switch tube and less components.
This is a smart full bridge chip from NuVolta Semiconductors.
Model NU1009A. The chip integrates full-bridge MOS
tube in power stage and communicates by I²C. It also has built-in high-precision current
detection and demodulation components, used for wireless inductive charging.
The chip in the upper right corner is also from NuVolta Semiconductors,
which is the master control chip for wireless charging, model NU1509.
The chip has high-precision FOD algorithm and complies with WPC1.2.4 EPP protocol.
It also supports LED indication for charging status and has comprehensive protection function.
A crystal oscillator next to the master control chip provides clock for master control chip.
The red CBB resonant capacitor comes from KYET. Withstand voltage is 100V, 0.4μF.
Finally, let’s see the coil. The coil is wound with Litz wire.
The coil in charger can be coupled with the coil in the mobile phone,
and transfer energy through electromagnetic induction.
You can also see, the thermistor is placed in
the middle of the magnetic barrier. It can accurately detect the
temperature of the coil in charger. Once the working temperature is too high,
it will trigger the alarm and stop the wireless charging from working.
Ensure the safety of wireless charging of mobile phones.
Well, this is the end of the teardown of this Belkin magnetic wireless charger pad.
This product is simple but easy to use. The 2m cable is a special feature,
which can satisfy those people who think the Apple MagSafe cable is too short.
In terms of compatibility, it supports iPhone 12 series magnetic
wireless charging and can accurately align to achieve 7.5W wireless charging power.
The product is highly integrated and choose the industry’s well-known brand chips
As a third-party magnetic wireless charging accessory, this product is worth its price.
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