Sunflower: Solar Power Manager 9V/12V/18V
DFRobot is launching a brand new series - Sunflower, 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.
Board Overview
Solar Power Manager interfaces (front)
Solar Power Manager interfaces (back)
Connection Diagram
Build a solar powered system
FEATURES
- Constant voltage MPPT algorithm, maximizing solar panel efficiency
- 7V~30V wide solar panel input voltage
- Various charging mode: solar/AC adapter/USB charger (2A max charge current)
- Three individual ON/OFF controllable regulated power supply for low-power applications
- All multi-layer ceramic capacitors (MLCC), safe, stable and high-efficiency
- Various protection functions
- USB connector with ESD shell
APPLICATIONS
- Smart solar environment monitor system
- Solar powered robot
- Small solar street lamp
- Solar power bank
SPECIFICATION
- 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
- 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 - Operation temperature：-40℃～85℃
- Dimension：78.0mm*68.0mm
DOCUMENTS
SHIPPING LIST
- Sunflower: Solar Power Manager x1
- Black Jumper x3
- M3 nylon pillar x4
- M3 stainless steel screw x4
- 14mm*14mm Aluminum cooling fin x1
- 14mm*14mm Thermal conductive silicone pad x1
- Female DC power jack adapter x1
WARNING
