USB fast charging PD input 16.8V four series lithium battery 1A charging board
- 2023-05-12 15:09:27
- lu Original
- 391
1 Circuit board PCB description：
1.1 Name ： USB fast charging PDinput 16.8V four series lithium battery 1A charging board
1.2 Applications:Convenient charging devices, etc.
1.3 Battery pack: 14.8V lithium battery pack,four series 3.7V lithium battery ， full 16.8V
1.4 Input voltage: 5V-9V（ When charging, thelight will be on, and when it is fully charged, the light will turn）
1.5 Max chargingcurrent： 1.1A
1.6 Introduction to Chip Functions ：
1， Lithium battery charging circuit： PW4040
PW4040 Lithium battery charge management chip， Up to 3.5Acharging current， adjustable output charging voltage,support wide input voltage
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 specified voltage
2， Circuit diagram ：
PCB layout is divided into two parts: signal controlcircuit + power circuit
Note 1： The blue thick line is the power trace, the layout should be wide； SW part (Q1, D1, L1 three devices connected) is not only the power output, but also it is a noise source, the layout should be wide and the area should be small.
Note 2： The red thick line is the power ground, the main points of the drawing board: to be wide, the shorter the distance between the connecting loops at each point, the more holes are punched in the ground.(input, C5, C6, C10, C9, C8,Q1 and battery ground)
3 ， PCB diagram and 3D display diagram
4 ， BOM Material List .
|
Comment |
Designator |
Footprint |
Quantity |
|
0603 1uF 25V |
C1， C4， C3 |
0603A |
3 |
|
0603 0.1uF 16V |
C2 |
0603A |
1 |
|
0805 22uF 25V |
C5, C6 |
0805C |
2 |
|
0603 560pF 25V |
C7 |
0603A |
1 |
|
0805 10uF 25V |
C8 |
0805C |
1 |
|
0603 0.1uF 25V |
C9 |
0603A |
1 |
|
100uF 25V SMD Aluminum Capacitors 6.3MM |
C10 |
SMD |
1 |
|
0603 10uF 16V |
C11 |
0603A |
1 |
|
SS34 SMB |
D1 |
SMB |
1 |
|
Integrated molded inductor 0850 22UH |
L1 |
SMD |
1 |
|
LED Red 0603 |
LED1, LED2 |
0603A |
2 |
|
MMBT3904 |
Q1, Q2, Q3 |
SOT23-3 |
3 |
|
PW4406 PWCHIP MOS tube |
Q4 |
SOP8 |
1 |
|
0603 1% 30k |
R1 |
0603SL |
1 |
|
0603 1.3M 1% |
R7 |
0603SL |
1 |
|
0603 100K 1% |
R8 |
0603SL |
1 |
|
0603 220k 1% |
R2 |
0603SL |
1 |
|
0603 22K 1% |
R3, R9 |
0603SL |
2 |
|
0603 1K 5% |
R4, R5 |
0603SL |
2 |
|
1210 60mR 1% |
R6 |
1210R |
1 |
|
PW6603 PWCHIP fast charge chip |
U1 |
SOT23-6 |
1 |
|
PW4040 PWCHIP charge chip |
U2 |
SOT23-6 |
1 |
|
USB TYPE C 16PIN |
USB1 |
USB |
1 |
