DFRobot Solar Power Manager Kit with 9V Panel

Build a compact off-grid power supply for embedded electronics, IoT nodes and low-power projects with this solar power management kit from DFRobot. It combines a Solar Power Manager board for 9V/12V/18V panels with a compact 9V 220mA solar panel.

The controller integrates constant-voltage MPPT solar harvesting, charging control for a 3.7V lithium battery, and multiple regulated DC outputs on one board. It can accept power from solar input, USB charging or an AC adapter, helping you design autonomous systems for outdoor and remote deployments.

Three independently switchable DC-DC outputs provide 5V, 3.3V and selectable 9V/12V rails for microcontrollers, sensors and wireless modules. The kit is supplied with 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, and Solar Panel (9V 220mA) x1.

Features:

• Constant voltage MPPT algorithm, maximising 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

Specifications:

• 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 OUT1 (3.7V battery IN): 86%@50%Load
• Regulated power supply efficiency OUT2 (3.7V battery IN): 92%@50%Load
• Regulated power supply efficiency OUT3 (9V OUT, 3.7V battery IN): 89%@50%Load
• USB charge efficiency: 84%@1A
• Solar charge efficiency (18V SOLAR IN): 78%@1A
• Maximum quiescent current: <3 mA
• BAT IN: over charge /over-discharge /over current /reverse connection protection
• OUT1-OUT3/USB OUT: short circuit/over current/overheat protection
• SOLAR IN: reverse connection protection
• Operation temperature: -40℃～85℃
• Dimension: 78.0mm*68.0mm

Suitable applications include smart solar environment monitoring systems, solar-powered robots, small solar street lamps and portable solar power banks.