Compatible with PD and QC quick charging electric input single-lithium battery 2A charging IC solution
- 2023-05-12 15:13:17
- lu Original
- 310
1 Circuit board PCB description：
1.1 Name: Compatible with PD and QC quick chargingelectric input single-lithium battery 2A charging IC solution
1.2 Applications:Convenient charging devices, etc.
1.3 Battery pack: 3.7V lithium battery pack,multiple parallel or single series connection, full 4.2V
1.4 Input voltage: 5V-9V（ When charging, the light will be on, and when it is fully charged,the light will turn, and the light will flash without connecting the battery）
1.5 Max charging current ： 2A
1.6 Introduction to Chip Functions ：
1， Lithium battery charging circuit： PW4052
PW4052 Lithium battery charge management chip， Up to 2.5A charging current, switching type high efficiency, support1 lithium battery charging。
2， DC-DC synchronous step-down circuit：PW2303
PW2303 Synchronous Buck Chip， Input24V-5V, output 5V, up to 3A, characterized by voltage step-down voltagedifference is very low, and high efficiency。
3， USB C port PD fast charge Protocol chip： PW6605
PW6605 is a PD/QC fast charging protocol chip， SINK terminal, responsible for protocol communication PD charger tooutput its specified voltage
2， Circuit diagram ：
PCB layout from the circuit diagram: signal circuit+ power circuit ；
The input and output capacitors of the powercircuit must be close to the chip pins or inductors, the closer the better.
Note 1： The thick blue line is the power alignment, the layout should bewide, the SW pin is the switch radiation is large, the layout is wide and thearea is small.
Note 2： The red thick line is the powerground, the main points of the drawing board: to be wide, the shorter thedistance between the connecting loops at each point, the more holes are punchedin the ground
3 ， PCB diagram and 3D display diagram
4 ， BOM Material List .
|
Comment |
Designator |
Footprint |
Quantity |
|
100uF 25V 6.3*7.7mm Electrolytic capacitance |
C1 |
6.3*7.7mm |
1 |
|
0603 25V 0.1uF |
C2, C7 |
0603A |
2 |
|
470uF 16V 8*10mm Electrolytic capacitance |
C3 |
8*10mm |
1 |
|
0603 50V 220PF |
C4 |
0603A |
1 |
|
0603 25V 1uF |
C5 |
0603A |
1 |
|
0805 25V 22UF |
C6, C8, C9 |
0805C |
3 |
|
0603 25V 2.2nF |
C10 |
0603A |
1 |
|
Plug-in ring type iron-silicon aluminum 47UH， Wire diameter above 0.7 |
L1 |
DIP |
1 |
|
Integrated molded inductor 0650-4.7UH |
L2 |
SMD |
1 |
|
0603 LED Red |
LED1 |
0603A |
1 |
|
0603 LED Green |
LED2 |
0603A |
1 |
|
0603 1% 100K |
R1 |
0603SL |
1 |
|
0603 1% 24.9K |
R2 |
0603SL |
1 |
|
0603 5% 4.7R |
R4 |
0603SL |
1 |
|
0603 1% 6.8K for input 9V，or 120K for input12V |
R5 |
0603SL |
1 |
|
0603 5% 10k |
R6 |
0603SL |
1 |
|
1206 1% 25mR |
R7 |
1206R |
1 |
|
0603 5% 1k |
R8 |
0603SL |
1 |
|
1206 1% 50mR |
R9 |
1206R |
1 |
|
0603 1% 10R |
R10 |
0603SL |
1 |
|
0603 5% 1K |
R3 |
0603SL |
1 |
|
PW2303 PWCHIP Buck Chips |
U1 |
SOP8 |
1 |
|
USB type C 16PIN |
USB1 |
USB |
1 |
|
PW4052 PWCHIP micro-charge chip |
U3 |
ESOP8 |
1 |
|
PW6605 PWCHIP Micro Fast Chips |
U2 |
ESOP10 |
1 |
