Teardowen of Meta 45W USB-C PD Charger (AN45A-59CFKCV)
So, let's take it apart to see its internal components.
This charger has a simple design and is in white.
It adopts a two-prong design.
The specs info are printed at the bottom.
Model is AN45A-59CFKCV. The output power can be up to 20V2.25A, which is 45W. It can support input of 100-240V~50/60Hz 1A.
The new logo of Meta is at the bottom.
It adopts a single USB-C port.
The length of it is about 63 mm (2.48 inches).
The width is about 42 mm (1.65 inches).
And the thickness is about 28 mm (1.1 inches).
The weight of the power adapter is 95 g (3.35 oz).
ChargerLAB POWER-Z KM003C shows it can support PD3.0, PPS, QC4, and DCP charging protocols.
And it has four fixed PDOs of 5V3A, 9V3A, 15V3A, 20V2.25A, and two sets of PPS, which are 3.3-16V3A and 3.3-21V2.25A.
Now, let's take it apart.
Remove the upper cover, the PCBA module is filled with potting compound to enhance heat dissipation.
The aluminum sheet is pasted on the cover.
Take out the PCBA module from the case, it is also filled with potting compound for fixing.
The length of it is about 60 mm (2.36 inches).
The width is about 38 mm (1.5 inches).
And the thickness is about 21 mm (0.83 inches).
Clean the potting compound, the AC input end is on the upper left corner which contains the fuse, common mode choke, safety X2 capacitor, high-voltage filter capacitor, and blue Y capacitor. And the transformer, solid capacitor, and USB-C socket PCB are on the right side.
And there are bridge rectifier, and PI chip on the back.
This charger adopts a flyback topology. It can output a wide range of voltage.
The input wires are soldered to the PCBA.
The input fuse is from WalterFuse. 3.15A 250V.
The green NTC thermistor is used to suppress surge current when plugged in.
The common mode choke is wound with magnet and insulated wires.
The safety X2 capacitor is from HJC. 0.1μF.
The bridge rectifier is from LITEON. Model is TT8M. 1000V 8A.
Electrolytic capacitors for input filtering and the transformer on the side.
One of the electrolytic capacitors is from Faratronic FZE series. 400V 27μF.
The differential mode chock is between two high-voltage filter capacitors.
These two high-voltage filter capacitors are from AiSHi, which are 400V 27μF. So the total capacity is 81μF.
The differential mode chock is wound with an I-shaped magnetic core.
The master control chip marked with SC1715C is from PI. It has built-in PWM controller, high-voltage MOSFET, synchronous rectifier controller and feedback function.
The electrolytic capacitor that powers the master control chip is 100V 4.7μF.
The transformer is wrapped in tape for insulation.
The solid capacitor for output filtering, USB-C socket PCB, and blue Y capacitor are on the output end.
There is the blue Y capacitor.
The synchronous rectifier is from AOS and adopts DFN5 x 6 package. Model is AONS62920. 100V 6.3mΩ.
These two solid capacitors are from the PolyCap RT series. 470μF 25V.
The protocol chip is from Weltrend, it supports USB PD3.0, QC4, and QC4+. It has a built-in 8-bit MCU. Model is WT6635.
The output VBUS MOSFET is from Excelliance MOS and adopts EDFN3 x 3 package. Model is EMB04N03V. 30V 4mΩ.
The USB-C socket is soldered on the vertical PCB.
Well, those are all components of this charger.
Summary of ChargerLAB
The PCBA module is filled with potting compound to enhance heat dissipation. And it adopts a highly integrated PI master control chip. So, the internal components and the workmanship are solid.