JOYROOM jiletang recently launched a number of new car chargers, each design is very distinctive. This issue brings you a detailed disassembly of the third car charge of Jiletang, see the title we should also have the most basic understanding, this car charge is equipped with 3A1C four USB interfaces, the total output power of 45W, can meet the tablet, mobile phone, headphones and other small and medium-sized equipment charging needs at the same time. Let's take a look at how this car is doing.
Previously, the charging head network also disassembled the Jiletang 154W multi-port car cigarette lighter, the Jiletang 72W 3A2C multi-port car charger, the Jiletang 1A1C 42.5W digital display fast charging car charging, the Jiletang 38W 1A1C dual-port fast charging car charging, the Jiletang 1A1C 20W fast charging mini car charger, the Jiletang 1A1C 30W dual-port fast charging car charging and other products, welcome to check.
First, the appearance of the 45W car charging in Jiletang
Jiletang's car charge adopts a black shell made of PC material, two sections of the fuselage bright surface and frosted contrast design, transitional rounding.
The front of the fuselage is printed with the JOYROOM brand and 45W lettering.
The car charging parameters are printed on the back.
Model: JR-CL09
Input: 12-24V
PD 输出：5V3A、9V3A、12V2.5A、20V1.5A
PPS:3.3-11V3A(Max)
QC3.0 output: 5V3A, 9V2A, 12V1.5A
PD+QC3.0 output: 5V4A
USB1+USB2 Output: 5V3A(Max)
Total Output: 45W (Max)
The car charger has been certified by the FCC, CE and RoHS.
The top surface is equipped with four 3A1C connectors, and the edges are also equipped with light rings.
The size of the car charge in the hand is intuitively felt.
The net weight is about 28g.
The energized light circle is bright and beautiful.
The USB-C port measured using the Chargelab POWER-Z KT002 supports Apple 2.4A, Samsung 5V2A, DCP protocol, and QC2.0/3.0, PD3.0, ppS fast charging protocol.
In addition, the PDO message shows that the C port also has four fixed voltage levels of 5V3A, 9V3A, 12V2.5A, 15V2A, and 20V1.5A.
In addition, the USB-A fast charger port is measured to support QC2.0/3.0, AFC, and FCP fast charging protocols.
The MEASURED USB1 standard charger supports Apple 2.4A, Samsung 5V2A, and DCP protocols.
The measured USB2 standard charger also supports Apple 2.4A, Samsung 5V2A, and DCP protocols.
Second, Jiletang 45W car charge dismantling
The top housing is detached, the snap-on secures the package, and the interior is secured with light-guide plastic.
Remove the car charging module.
The front of the PCB board is equipped with input and output filter capacitors and buck inductors, which are reinforced with glue.
On the other side there are two buck controllers and a protocol chip.
The four female seats are soldered to another small board with multiple LED indicators at the edges.
The positive spring welds a red wire to reduce the resistance.
Patch fuse close-up.
Input filter solid capacitors from Jianghai, 35V 100μF, jacketed insulation sleeve protection.
Xintan micro NDP1360KC synchronous buck converter, buck power supply for 1A1C fast charge port. NDP1360KC built-in dual N-switch transistors, maximum output current 4.8A, operating frequency 130-300KHz can be set. The maximum operating voltage is 30V, and the input withstand voltage is 38V.
Step-down inductive jacket insulated tube.
Another solid capacitor, also from Jianghai, is 25V 220μF for buck output filtering.
The protocol chip uses the cloud silicon semiconductor XPD767 to control the output voltage of the 1A1C interface. The chip has been certified to USB PD3.0, TID: 3479. Support QC2.0/3.0/3.0+, AFC, FCP, SCP, HVSCP, PD and PPS and other fast charging protocols, internal integration of 10mΩ VBUS path power switch, and integrated 10mΩ current sense resistor, support perfect protection function, save the number of peripheral components, simplify the circuit, reduce costs. Supports TSSOP-20 and QFN20 packages.
Cloud Silicon Semiconductor XPD720 data information.
Charging head network disassembly learned that Yunsi Semiconductor XPD series fast charging protocol chip has been adopted by Bull, Belkin, Lenovo, Nokia, Philips, Aoji, Bess, Pinsheng, Momix and other brands of dozens of products, grasping the 20W PD fast charging outlet, Fuman Group Yunsi Semiconductor single-month PD protocol chip sales exceeded 10 million.
New power NCE30P20Q PMOS tube, withstand voltage 30V, DFN3.3*3.3-8L package, for 1A1C fast fill port output power distribution.
Xintan Micro NDP1340KC Buck Controller for two additional USB standard filler buck outputs.
Close-up of the buck inductor.
Close-up of the buck output filter capacitor with a specification of 10V 470μF.
Shenzhen Hengcheng micro HC2802, dual USB port identification power IC.
The LED is close-up.
USB-C female close-up, soldered on a small board.
USB-A mother seat close-up, with a blue rubber core for easy differentiation.
USB1 mother seat close-up.
USB2 mother seat close-up.
All disassembled, let's take a family portrait.
Charging head net disassembly summary
Jiletang 45W car charging body shell bright matte contrast design, the overall style is rounded, in addition to a cool RGB light ring, the use of better experience. The biggest feature of the product is equipped with up to four USB interfaces, and has a good 45W total output, which can charge four devices at the same time to meet the needs of multiple devices charging at the same time during travel.
The charging head network found through disassembly that the car charge built-in two independent buck circuits, respectively, for the two fast fillers and two standard charge ports to step down, the controller is from the core Tan micro, 1A1C fast charge using the Cloud Silicon Semiconductor XPD720 protocol chip to control the output voltage. In addition, the solid capacitors of the well-known brand Jianghai are used for filtering.