DFRobot Solar Power Manager (for 9V/12V/18V Panels)

The DFRobot Solar Power Manager series are designed for IoT projects and renewable energy projects, providing safe and high-efficiency embedded solar power management modules for makers and application engineers. Solar Power Manager is a complete small power and high-efficiency solar power management module. It features as MPPT (Maximum Power Point Tracking) function, maximizing the efficiency of the solar panel. Apart from serving as a solar charger, the module can provide up to 2A charging current to 3.7V Li battery with AC adapter (within 30V) or USB charger, three individual ON/OFF controllable DC-DC converters with 5V 1.5A, 3.3V 1A and 9V/12V 0.5A outputs. These features satisfy the needs of various solar power projects and low-power applications. The module also employs various protect functions, such as Li battery protection, battery/solar panel reverse connection protection, output over temperature and over current/short circuit protection, which greatly improves the stability and safety of the system.

Applications:

1. Smart solar environment monitor system
2. Solar powered robot
3. Small solar street lamp
4. Solar power bank

---

Useful link:

For more information refer to the tutorial

---

Features:

1. Constant voltage MPPT algorithm, maximizing solar panel efficiency
2. 7V~30V wide solar panel input voltage
3. Various charging mode: solar/AC adapter/USB charger (2A max charge current)
4. Three individual ON/OFF controllable regulated power supply for low-power applications
5. All multi-layer ceramic capacitors (MLCC), safe, stable and high-efficiency
6. Various protection functions
7. USB connector with ESD shell
8. Solar power management IC: LTC3652
9. Solar input voltage (SOLAR IN): 7V~30V
10. Battery input (BAT IN): 3.7V single cell Li-polymer/Li-ion battery
11. Charge current(USB/SOLAR IN): 2A Max
12. Charging cutoff voltage(USB/SOLAR IN): 4.2V±1%
13. MPPT setting voltages：OFF/9V/12V/18V
14. USB IN voltage: 5V
15. Regulated power supply: OUT1=5V 1.5A; OUT2=3.3V 1A; OUT3=9V/12V 0.5A
16. Regulated power supply efficiency (3.7V battery IN) OUT1: 86%@50%Load OUT2: 92%@50%Load OUT3 (9V OUT): 89%@50%Load
17. USB charge efficiency: 84%@1A
18. Solar charge efficiency (18V SOLAR IN)：78%@1A
19. Maximum quiescent current: <3 mA
20. Protections BAT IN: over charge /over discharge /over current /reverse connection protection OUT1-OUT3/USB OUT: short circuit/over current/over heat protection SOLAR IN: reverse connection protection

---

Package Includes:

1 x Solar Power Manager;

3 x Black Jumperbsp

4 x M3 nylon pillar

4 x M3 stainless steel screw

1 x 14mm*14mm Aluminum cooling fin

1 x 14mm*14mm Thermal conductive silicone pad

1 x Female DC power jack adapter