Teardown of Baseus 65W PowerCombo Tower Charging Station With Retractable Cable (CCGAN65-S3ACS)
Baseus has launched a 65W fast charging power strip - the Baseus 65W PowerCombo Tower Charging Station, which comes with a retractable USB-C cable. This power strip integrates the functions of a power strip, charger, and cable, and has three US AC outlets, USB-C retractable cable, USB-C and USB-A ports. It features a fast charging output power of 65W, with automatic power distribution function, catering to both mobile phones and household appliances.
It comes with a 1.5m AC cable and an 80cm USB-C cable for convenient use on the office desk. The power supply is controlled by touch buttons, and the power strip is equipped with digital protection circuits that support input overvoltage, undervoltage, and output overcurrent protection, ensuring safe electricity usage. So let's go ahead and take it apart to see its internal comonents and structure.
The Baseus logo, product appearance and name are on the front of the box.
Some specs info are on the back.
The box contants some documents, nano pad and the power strip itself.
The Instructions for the nano pad are printed on it.
This power strip comes with a long power cord, which is not detachable.
It's a US plug.
And the rubber sleeve on the junction can enhance its durability.
The power button is at the top, which is convenient to control.
Take a closer look at the output panel.
It has a USB-C and a USB-A port.
The retractable USB-C cable can be pulled out, and it'll be retracted automatically when you let go.
There is a AC socket on the side.
The "65W GaN" suggests its maximum charging speed for USB port.
There is another AC socket on the other side.
And a two-prong AC socket is on the back.
All specs info are printed here. Model is CCGAN65-S3ACS. The AC part can support up to 1625W, and the DC part can support input of 100-125V, 50-60Hz 1.5A. When charging a single device, the retractable USB-C cable can support up to 65W, and the other two USB ports can only support up to 60W.
The length of this power cord is about 1.5m (4' 11'').
The length of the power strip is about 113mm (4.45 inches).
The width is about 66mm (2.60 inches).
And the height is about 65mm (2.58 inches).
And the retractable USB-C cable is about 80cm (2' 7.5'').
The weight of the power strip and the power cord is about 534g (18.84 oz).
And after connecting to the power supply, the indicator light turns blue.
The ChargerLAB POWER-Z KM002C shows the retractable USB-C cable supports FCP, SCP, AFC, QC3.0/4+, PD3.0, PPS charging protocols.
And it also supports five fixed PDOs of 5V/9V/12V/15V3A, 20V3.25A, and a set of PPS.
The supported protocols of the USB-C port are the same as the retractable USB-C cable.
So is the PDOs.
As for the USB-A port, it can support FCP, SCP, AFC, QC3.0 charging protocols.
Now that we have completed our unboxing and testing of this Baseus's power strip, it's time to take apart the device and examine its internal components and structure.
Pry along the gap and remove the back cover.
It can be divided into three parts. The orange case is used to store the retractable USB-C cable. The AC part is in the middle, and the DC output part is at the right side.
The DC part is composed of multiple PCBs.
The orange case is fixed by silicone adhesives.
Take them all out.
Remove all four PCBs on the AC part, which are control circuit, fast charging circuit, input detection circuit, and output protocol circuit, respectively.
ChargerLAB found it adopts QR flyback topology for fast charging. There're three switching power supplies, used for fast charging output, relay control, power and touch detection. Next, let's introduce all components inside one by one.
The input time-delay fuse is from Better Electronics.
The green NTC thermistor is from Shiheng Electronics MF72 series, used to suppress the inrush current.
The blue varistor marked with 10D471K is also used for input surge protection.
The safety X2 capacitor is from DGCX, capacity is 0.33μF.
The green common mode choke is next to the safety X2 capacitor.
The input bridge rectifier is soldered on a small vertical PCB, from World Industrial. Model is WRLSB80M.
Here is all the information about World Industrial WRLSB80M.
The electrolytic capacitor for input filtering is from Yongming. 27μF 400V.
The other two electrolytic capacitors are from CapXon.
33μF 400V for each.
The differential mode choke is between two capacitors.
The master control chip adopts Southchip's GaN IC SC3057. This chip integrates high-performance multi-mode flyback controller, GaN driver, GaN FET, power supply and protection circuits. Simplify the number of external components and eliminate the parasitic elements of traditional drive wiring on high-frequency switching through package integration.
The Southchip SC3057 adopts a design that separates power wiring and control wiring to reduce the impact of high-frequency switching on the control loop, and optimizes the charger wiring design and electrical performance through optimized pad design, which simplifies design development. It has a built-in 165mΩ GaN FET, supports 175KHz switching frequency, and X-capacitor discharge.
The transformer is tightly wound and insulated with yellow tape.
The SMD Y capacitor is from TRX, model TMY1102M, which features in small size and light weight, and are very suitable for high-density power supply products such as GaN charger.
TRX focuses on the R&D, production and sales of passive components, with a registered capital of 100 million yuan. It has two types of capacitor brands: SMD TRX and DIP TY capacitors. TRX will devote itself to the research of ceramic materials in order to provide customers with more solutions.
This is the introduction for TRX's products.
The EL1018 optocoupler is used to regulate the output voltage.
The synchronous rectification controller is from Southchip, model SC3503, which features in adaptive turn-on detection and fast turn-off. It does not need auxiliary coil power supply, and the output voltage can be as low as 0V. The patented adaptive turn-on detection circuit avoids the synchronous rectifier from being mistaken as turned on. It is compatible with various MOS, has ultra-low static current, supports multiple operating modes, and supports both high-side and low-side synchronous rectification with very few peripheral components.
Here is all the information about Southchip SC3503.
And the synchronous rectifier is from Ruichips, model RUH1H80M, and adopts PDFN 5060 package. 100V 8.5mΩ.
The solid capacitor for output filtering is from CapXon PT series. 560μF 25V.
And the output current will be filtered by a toroidal core inductor.
There're two output circuits on this independent buck PCB.
So, there're two identical protocol chips from Southchip. Model is SC9711. Withstand voltage is 40V, output current is 6A, and a single chip can support the fast charging of a USB-C and a USB-A.
Here is all the information about Southchip SC9711.
Here is the other Southchip SC9711.
Those two synchronous buck MOSFETs are from Ruichips, model RUH4040M2, and adopt PDFN3333 package. 40V 5.5mΩ.
The solid capacitor for output filtering is from CapXon PT series. 220μF 25V.
The output VBUS MOSFETs are the same as the synchronous buck MOSFETs, from Ruichips. Model is RUH4040M2.
The plastic sheet inside the USB-C socket is orange.
And the plastic sheet inside the USB-A socket is also orange.
The plastic sheet inside the internal USB-C socket is black.
Next, here is the top PCB with a touch sensor in the middle.
The buck IC is from Bright Power Semiconductor and adopts SOP7 package. Model is S7132S.
The sticker shows this transformer can support an output of 5V1A.
And the SMD Y capacitor is from TRX. Model is TMY1102M.
The Schottky diode is next to it.
This solid capacitor is also from CapXon PX series. 330μF 6.3V.
There's a layer of conductive fabric and foam over the touch button, and four LED indicators are around the button.
This tiny chip marked with 3C256C is used to control the touch sensor.
An MCU is used for overvoltage and overcurrent protection. Model is BP0P104.
And this is the optocoupler.
Another small PCB is used for input detection and control.
The input fuse is wrapped with heat-shrinkable tubing for overcurrent protection.
The bridge rectifier is used for input rectification. Model is MB10F. 1A 1000V.
Those two electrolytic capacitors are from CapXon.
A green color ring inductor is between them.
The non-isolated buck converter is from Lii semiconductor. Model is LN8K05A. It integrates a 750V MOSFET, and the output current can reach 150mA.
The buck inductor is insulated with heat-shrinkable tubing.
The detection chip from Hiliwi can measure the AC voltage and output current. Model is HLW8032.
This 1mΩ current sense resistor can detect AC.
The white relay is from Hongfa, model HF7520, which is used to control the power supply of the AC module.
The contact current is 16A.
Finally, take a closer look at this orange case, and the retractable USB-C cable is stored in this orange case.
The case is fixed by a screw.
Those metal contacts on the right PCB are connected to the metal grooves on the left PCB.
The internal USB-C cable is soldered on the back of this PCB.
The retractable USB-C cable can be easily retracted when you let go.
Summary of ChargerLAB
The 65W PowerCombo Tower Charging Station launched by Baseus comes with a 1.5m (4' 11'') power cord, three AC outlets, and three USB output ports, including two USB-C and one USB-A. With a fast charging output of 65W, one of its USB-C ports is actually an 80cm (2' 7.5'') long integrated cable that can be conveniently extracted for use. Furthermore, it has an automatic power distribution feature that allows multiple devices to connect and charge at the same time. It also features a touch power button and a digital protection circuit that can automatically cut off the power supply in case of abnormal voltage, thus ensuring safe usage of electronic devices.
After taking it apart, we found the internal structure is pretty compact, and the internal module is stacked with four different PCBs, responsible for different functions. The retractable USB-C cable is stored in a separate case, and the connection method is pretty special.
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