DESKCHARGER300

application

1. Charging mobile devices such as laptops and phones
2. Power supply for electronic products
3. Record the charging power curve
4. Monitor output voltage, current, power and other parameters

Overview:

This product is a step-down desktop charger based on SW3538. Supports DC5525 interface power supply, supports power on slow start, has basic protection functions such as input overvoltage protection and output overvoltage overcurrent protection, has two TypeC fast charging interfaces, both supporting a maximum output of 140W (20V/7A), two TypeA fast charging interfaces, two TypeA standard 5V interfaces, A1 and C1 share, A2 and C2 share, A1/C1 and A2/C2 are independent of each other, USBA1 and USBA2 share, and each input and output interface supports power current detection. The 2.8-inch TFT color screen can display the main parameters of each interface voltage, current, power, etc. in real time, and can record the power curve of each fast charging output port within one hour. It has a toggle switch to control the power switch.

Structural block diagram：

Power board：

Display board：

parameters:

1. Input interface type: DC5525 female socket (note that an additional DC power supply is required for use)
2. Input voltage: DC21-30V (recommended 24V, input exceeding 31V will trigger overvoltage protection, overvoltage protection exceeding 40V will fail, permanently damaging the equipment)
3. Output interface type: TypeC * 2+TypeA * 2+TypeA (5V) * 2
4. Output interface fast charging protocol (C1&C2):
PPS/PD3.0/PD2.0/QC5/QC4+/QC3+/QC3.0/QC2.0/AFC/FCP/SCP/PE2.0/PE1.1/ SFCP/TFCP  
5. Output interface fast charging protocol (A1&A2):
QC3.0/QC2.0/AFC/FCP/SCP/PE2.0/PE1.1/SFCP/TFCP/VOOC
6. Output interfaces (USBA1&USBA2): 5V * 3A
7. Output ripple (24V input, tested with electronic load, actual output ripple is related to the quality and load of the input power supply itself, for reference only):
(1) Single C-port output 140W (20V * 7A), ripple of about 50mV
(2) Single A port output 60W (20V * 3.0A), ripple of about 50mV
(3) Single USB A port output 15W (5V * 3A), ripple of about 20mV