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Description
- DFRobot Sunflower Solar Power Manager
- USB IN voltage: 5V
- Solar input voltage (SOLAR IN): 7V~30V
- MPPT setting voltages: OFF/9V/12V/18V
- Battery input (BAT IN): 3.7V single cell Li-polymer/Li-ion battery
The DFRobot Sunflower Solar Power Manager 9V/12V/18V is focusing on high-efficiency, small power solar energy management for IoT projects and renewable energy applications. 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.
- 1 x Sunflower: Solar Power Manager
- 3 x Black Jumper
- 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
- 78.0mm x 68.0mm
- Solar power management IC: LTC3652
- Solar input voltage (SOLAR IN): 7V~30V
- Battery input (BAT IN): 3.7V single cell Li-polymer/Li-ion battery
- Charge current (USB/SOLAR IN): 2A Max
- Charging cutoff voltage (USB/SOLAR IN): 4.2V±1%
- MPPT setting voltages: OFF/9V/12V/18V
- USB IN voltage: 5V
- Regulated power supply: OUT1=5V 1.5A; OUT2=3.3V 1A; OUT3=9V/12V 0.5A
- Operation temperature：-40℃～85℃
Regulated power supply efficiency (3.7V battery IN)
- OUT1: 86%@50%Load
- OUT2: 92%@50%Load
- OUT3 (9V OUT): 89%@50%Load
- USB charge efficiency: 84%@1A
- Solar charge efficiency (18V SOLAR IN):78%@1A
Maximum quiescent current: <3 mA
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
Applications
- Smart solar environment monitor system
- Solar powered robot
- Small solar street lamp
- Solar power bank