Solar Power Manager (for 9V/12V/18V solar panel)

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.

Check the brief specification for all Solar Power Manager Series Products.

Board Overview

Connection Diagram

Solar Power Manager Series

Name	Solar Power Manager v1.0	Solar Power Manager 5v v1.1	Solar Power Manager Micro v1.0	Solar Power Manager v1.0
SKU	DFR0535	DFR0559	DFR0579	DFR0580
Solar Power Management IC	LTC3652	CN3065	SPV1050	CN3767
Solar Input Voltage	7V-30V	4.4V-6V	0.5V-4V	15V-25V
Maximum Charge Current	2A(Solar/USB)	900mA(Solar/USB)	70mA(Solar)/100mA(USB)	4A(Solar)
Topology	DC-DC Buck	Linear Regulator	DC-DC Boost	DC-DC Buck
Battery	3.7V Lithium Battery	3.7V Lithium Battery	3.7V Lithium Battery	12V Lead-Acid Battery
MPPT	9V/12V/18V Optional	5V Fixed	75% Open Voltage	Fixed 18V
Battery Protections	Over Charge/Over Discharge/Over Current/Reverse Connection Protections	Over Charge/Over Discharge/Over Current/Reverse Connection Protections	Over Charge/Over Discharge/Reverse Connection Protections	Over Charge/Over Discharge/Reverse Connection Protections
Output Protections	Short Circuit/Over Current/Over Heat Protections	Short Circuit/Over Current Protections	Short Circuit/Over Current Protections	Short Circuit/Over Current/Over Heat Protections
USB Charge IN	Yes	Yes	Yes	No
USB OUT	5V 1.5A	5V 1A	No	5V 2.5A x2
Regulated OUT	Three Regulated Outputs 3.3V 1A；5V 1.5A；9V/12V 0.5A	One Regulated Output 5V 1A	One Regulated Output 3.3V 90mA	Two Outputs 5V 5A; 12V 8A
Dimension	78.0mm×68.0mm	33.0mm×63.0mm	30.0mm×30.0mm	68.0mm×68.0mm
Features	A complete multifunction solar power management module. Applications: Small Solar Street Lamp, Solar Powered Robots  For 9V/12V/18V Solar Panels within20w	A small and easy-to-use 5V solar power management module. Applications: Solar Power Bank, Solar Environment Monitors For 5V Solar Panels within 10W	A micro power solar power management module for low-power sensors and controllers. Applications: Wireless Sensor Network, BLE iBecon For 1V/2V/3V Solar Panels within 0.5W	A medium power solar management module for 12V lead-acid batteries. Applications: Street lighting, intelligent agriculture, environmental monitoring station, UPS For 18V Solar Panels within 100W

• 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

Smart solar environment monitor system

Solar powered robot

Small solar street lamp

Solar power bank

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

Product wiki

• Solar Power Manager;x1
• Black Jumperbsp 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