USB fast charging device 5V-12V2A two lithium battery Buck-Boost charging scheme PW4000 chip
- 2023-05-12 15:10:31
- lu Original
- 188
1 Circuit board PCB description:
1.1 Name : USB fast charging device 5V-12V2A two lithiumbattery Buck-Boost charging scheme PW4000 chip
1.2 Applications: Convenient charging devices,etc.
1.3 Battery pack: 7.2Vlithium battery pack, multiple parallel or two series connection, full 8.4V
1.4 Input voltage: 5V-12V( When charging, the light will be on, and when it is fully charged, thelight will turn) Change the R5 resistance value to fast charging voltage 9V,15V,20V ( If you want to checkthe resistance value, please check the PW6603 specification) If R11,R12,C9,PW6603 and USB1 ports are not connected, you candirectly input DC: 5V-20V to charge the battery.
1.5 Max charging current: 2A
1.6 Introduction to Chip Functions :
1, Lithium battery charging circuit:PW4000
PW4000 is a 1-4lithium-ion battery charging management chip, Up to 3Acharging current, support voltage rise and fall.
2, USB C port PD fast charge Protocol chip: PW6603
PW6603 is a PD fast charge protocol chip, SINK terminal,responsible for protocol communication PD charger to output its specifiedvoltage
2,
Circuit diagram
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3 , PCB diagram and 3D display diagram
4 , BOM Material List .
Comment |
Designator |
Quantity |
100uF 35V 6.3*7.7mm Electrolytic capacitance |
C1 |
1 |
0805 25V 22UF |
C2, C7, C10 |
3 |
0603 25V 0.1uF |
C3, C4, C5 |
3 |
0603 16V 10uF |
C6 |
1 |
NC |
C8 |
1 |
0603 25V 1uF |
C9 |
1 |
Integrated molded inductor 0650-3.3UH |
L1 |
1 |
0603 LED Green |
LED1 |
1 |
0603 LED Red |
LED2 |
1 |
PW4000 Buck-Boost voltage charging IC |
PW4000 |
1 |
PW6603 Charger PD voltage protocol chip |
PW6603 |
1 |
PW2302A |
Q1 |
1 |
1206 1% 10mR |
R1 |
1 |
0603 1% 2k |
R2 |
1 |
0603 1% 1.5K |
R3 |
1 |
0603 1% 2.4k |
R4 |
1 |
0603 1% 10k |
R5 |
1 |
0603 5% 10k |
R6, R7 |
2 |
0603 5% 2k |
R8 |
1 |
0603 ‰ 0R |
R9 |
1 |
NC |
R10 |
1 |
0603 1% 120k |
R11 |
1 |
0603 1% 220k |
R12 |
1 |
USB type C 16PIN |
USB1 |
1 |