LvlianA dual port fast charging car charger is introduced. The model of this car charger is CD213, which is made of metal shell, durable and heat dissipating.Car charger has1A1CDual quick charge interface, USB-C interface supports 20W PD quick charge, USB-A interface supports 22.5W quick charge, dual interface supports independent quick charge, and the maximum total output power is 42.5W.
Thanks to the independent design of the interior of the car charger, this car charger can quickly charge two mobile phones at the same time. It is very friendly to both mobile phone owners and co drivers, making full use of the fragmented time.The charging head network is right belowLvlianThis car charger is disassembled. Let's have a look at the internal scheme and materials.
LvlianAppearance of 42.5W fast charging car charger
LvlianThe 42.5W fast charging car charger is made of metal shell, and the surface is sprayed with silver gray metallic paint. The overall metal texture is full.
The input end of the machine body is designed as a conical cap, and there is a plastic ring between it and the main body shell for isolation and insulation.
The front of the fuselage is a laser carved UGREEN brand.
Specification parameter information of rear laser car charging.
The top surface of the fuselage is made of black plastic shell, equipped with1A1COutput interface.
The USB-A port uses the same color matching as Huawei's classic purple, indicating that it supports Huawei 22.5W SCP fast charging.
The measured length of the charger body is 68.27mm.
The top surface diameter is 30.93mm.
The size of the product in the hand is intuitive.
In addition, the measured net weight of the vehicle is about 31g.
Under the condition of simulating 14V DC input, using ChargeLAB POWER-Z KM003C, it is measured that the USB-A interface supports the charging protocols of FCP, SCP, AFC, QC3.0, DCP and Apple2.4A.
It is measured that the USB-C interface supports the charging protocols of FCP, SCP, AFC, QC3.0/4+, SFPP, PD3.0, PPS, DCP, SAM 2A, and Apple2.4A.
PDO message shows that the USB-C interface also has three sets of fixed voltage gears: 5V3A, 9V2.22A and 12V1.67A, and two sets of PPS voltage gears: 3.3-5.9V4A and 3.3-11V2.2A.
Under the condition of simulating 24V DC input, it is measured that the USB-A interface also supports the charging protocols of FCP, SCP, AFC, QC3.0, DCP and Apple2.4A.
It is measured that the USB-C interface also supports the charging protocols of FCP, SCP, AFC, QC3.0/4+, SFPP, PD3.0, PPS, DCP, SAM 2A, and Apple2.4A.
PDO message shows that the USB-C port also has three fixed voltage gears: 5V3A, 9V2.22A and 12V1.67A, and two PPS voltage gears: 3.3-5.9V4A and 3.3-11V2.2A.
Lvlian 42.5W fast charging vehicle charging disassembly
After seeing the appearance and test of this fast charging car charger of Lvlian, we will disassemble it and look at the internal scheme and materials together.
First, remove the output side housing cover and pull out the internal PCBA module.
The internal PCBA module is connected by welding the positive and negative pole spring pieces.
The outside of the car charging PCBA module is pasted with highland barley paper insulation.
The positive pole of the PCBA module is powered by springs and contacts.
The rear part is USB-A and USB-C mother seats, and metal brackets are welded between the two PCBs for fixation.
Tear off the insulating highland barley paper on the surface of the PCBA module and start to observe the charging PCBA module.
The resistance of the interior welding enameled wire of the positive spring of the car charger is reduced.
PCB welding synchronous step-down converter, protocol chip and VBUS switch tube corresponding to USB-C interface.
PCB corresponding to USB-A interface is welded with synchronous buck converter and protocol chip.
Two PCBs are welded and split. The car charger is a step-down structure. The space inside the PCB is welded with filter capacitors, step-down inductors and the corresponding output bus.
The vehicle charger uses a silk screen T fuse for overcurrent protection corresponding to the USB-C interface step-down circuit.
The specification of input filtering solid capacitance is 100μF 35V。
The vehicle charging input adopts a silicon power synchronous rectification buck chip, model SP1259HN, which is a synchronous buck converter supporting 40V input, and the output current can reach 4.8A.Integrated switch tube inside the chip, output current limit can be set through external resistance, switching frequency is programmable, and programmable line loss compensation is built in.The number of SP1259HN peripheral devices is reduced, and QFN20-5 * 5mm packaging is adopted, which can be used for vehicle charging, fast charging and general step-down converter applications.
Silicon power SP1259HN data information.
The step-down inductance is made of magnetic ring winding and insulated with heat shrinkable tube.
The specification of output filter capacitor is 220μF 16V。
The 15m Ω sampling resistance is used to detect the output current.
The protocol chip used for USB-C interface is Zhirong SW2303, which is a highly integrated multi protocol fast charging solution that supports USB-C and USB-A interface applications, mainstream fast charging protocols such as PD, QC, FCP, high and low voltage SCP, AFC, SFPP and PE, and supports optocoupler feedback and FB feedback.
SW2303 integrates CV/CC control loop, Type-C interface logic, fast charging protocol controller, and various safety protection functions.Cooperate with AC-DC or DC-DC and a few peripheral components to form a complete high-performance Type-C/Type-A fast charging solution.
SW2303 also supports I2C interface, internal integrated discharge function, NMOS/PMOS VBUS switch tube, and dynamic power distribution to meet the use of multi port charger.The chip supports external NTC for overheating protection to achieve comprehensive protection functions.
The output VBUS switch tube is from Ruijun Semiconductor, RU30L30M3. It is a 30V withstand PMOS with a conductivity of 10m Ω and is packaged with SDFN3030.
The 5m Ω resistance is used to detect the output current of the USB-C port.
The chip LED indicator is used for power indication.
The USB-C mother seat is fixed by via welding, and the black rubber core does not expose copper.
The car charger corresponds to the USB-A interface step-down circuit, and also uses a silk screen T fuse for overcurrent protection.
Input filter solid capacitance specification is 100μF 35V。
The synchronous step-down converter is from silicon power, and its model is SP1259HN, which is the same as the model of USB-C interface.
The step-down inductance is made of magnetic ring winding and insulated with heat shrinkable tube.
The specification of output filter capacitor is 220μF 16V。
The 10m Ω current sampling resistance is used to detect the output current.
The USB-C1 port protocol chip adopts the British chipset IP2723T, which has passed the USB IF Association PD3.0 PPS certification, TID: 3135. It is a fast charging protocol IC integrating multiple protocols and used for USB output ports.It supports a variety of fast charging protocols, including USB TypeC DFP, PD2.0/3.0, PPS, HVDCP QC4, QC4+, QC3.0/2.0, FCP, SCP, AFC, MTK PE+2.0/1.1, Apple 2.4A, BC1.2, and Samsung 2.0A.The right side is the TVS protection tube of the USB-C female seat, which is used for electrostatic protection.
It can provide a complete TYPE-C solution for one-way output applications such as adapters and car chargers.In addition, IP2723T has a high degree of integration and rich functions, requiring only a few peripheral devices in application, effectively reducing the size of the overall scheme and reducing BOM costs.
The USB-A port VBUS switch tube is from Ruijun Semiconductor, RU3030M3. It is a 30V withstand NMOS with a resistance of 7m Ω and is packaged with DFN3030.
The 5m Ω sampling resistance is used to detect the output current.
The USB-A female seat adopts purple rubber core, and the positive and negative poles are widened to support high current fast charging.
Take a look at all of them and have a family photo.
Disassembly summary of charging head network
This dual port car charger of Lvlian is made of metal shell, which is sturdy and durable.Car charger has1A1CDual quick charge interface, USB-C interface supports 20W quick charge, and USB-A interface supports 22.5W quick charge.The dual port quick charge is an independent design, which can quickly charge two mobile phones at the same time without interfering with each other.Make full use of fragmentation time, and have a better use experience.
The charging head network learned through disassembly that the Lvlian car charger is composed of synchronous step-down converter and protocol chip.Built in two-way synchronous step-down converter from silicon power, model SP1259HN, internal integrated switch tube, simplified peripheral components.The USB-C interface uses Zhirong SW2303 protocol chip and Ruijun Semiconductor RU30L30M3 VBUS switch tube.
The USB-A port adopts the British chipset IP2723T protocol chip and the Ruijun semiconductor RU3030M3 VBUS switch tube.The interior of the car charger is composed of two PCBs welded and pasted with highland barley paper for insulation.The input and output of the car charge are all filtered by solid capacitance. The magnetic ring inductance is insulated by heat shrinkable tubes. The internal workmanship is solid and the materials are reliable.