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 5V is a small power and high-efficiency solar power management module designed for 5V solar panel.
It features as MPPT (Maximum Power Point Tracking) function, maximizing the efficiency of the solar panel. The module can provide up to 900mA charging current to 3.7V Li battery with USB charger or solar panel. The ON/OFF controllable DC-DC converters with 5V 1A output satisfies the needs of various solar power projects and low-power applications. The module also employs various protection functions for battery, solar panel and output, which greatly improves the stability and safety of your solar projects.
Check the brief specification for all Solar Power Manager Series Products.
Version History
V1.0: It is highly recommended to use a 3.7V lipo battery with protection circuits to improve battery safety.
V1.1(Newest): Battery (BAT IN) overcurrent and overdischarge protection is added to improve battery safety. It can be use for 3.7 lipo battery no matter it is packed with protection circuits or not.
Board Overview
Solar Power Manager 5V
 |  |  |  | |
| 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 PowerManagement IC | LTC3652 | CN3065 | SPV1050 | CN3767 |
| Solar Input Voltage | 7V-30V | 4.4V-6V | 0.5V-4V | 15V-25V |
| Maximum ChargeCurrent | 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/OverCurrent/Reverse Connection Protections | Over Charge/Over Discharge/OverCurrent/Reverse Connection Protections | Over Charge/Over Discharge/ReverseConnection Protections | Over Charge/Over Discharge/ReverseConnection Protections |
| Output Protections | Short Circuit/Over Current/Over HeatProtections | Short Circuit/Over Current Protections | Short Circuit/Over Current Protections | Short Circuit/Over Current/Over HeatProtections |
| USB Charge IN | Yes | Yes | Yes | No |
| USB OUT | 5V 1.5A | 5V 1A | No | 5V 2.5A x2 |
| Regulated OUT | Three Regulated Outputs3.3V 1A5V 1.5A9V/12V 0.5A | One Regulated Output5V 1A | One Regulated Output3.3V 90mA | Two Outputs5V 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 powermanagement module. Applications: Small Solar Street Lamp, Solar Powered Robots For 9V/12V/18V Solar Panels within20w | A small and easy-to-use 5V solarpower management module. Applications: Solar Power Bank, SolarEnvironment Monitors For 5V Solar Panels within 10W | A micro power solar powermanagement module for low-powersensors and controllers. Applications: Wireless Sensor Network, BLE iBecon For 1V/2V/3V Solar Panels within0.5W | A medium power solar managementmodule for 12V lead-acid batteries. Applications: Street lighting, intelligentagriculture, environmental monitoringstation, UPS For 18V Solar Panels within 100W |
Features:
- Constant voltage MPPT algorithm, maximizing solar panel efficiency
- Designed for 5V solar panel
- Double charging mode: solar/USB charger (900mA max charge current)
- 5V ON/OFF controllable regulated power supply for low-power applications
- All-round 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: CN3065
- Solar Input Voltage (SOLAR IN): 4.5V~6V
- Battery Input (BAT IN): 3.7V Single cell Li-polymer/Li-ion Battery
- Charge Current(USB/SOLAR IN): 900mA Max trickle charging, constant current, constant voltage three phases charging
- Charging Cutoff Voltage (USB/SOLAR IN): 4.2V±1%
- Regulated Power Supply: 5V 1A
- Regulated Power Supply Efficiency (3.7V BAT IN): 86%@50%Load
- USB/Solar Charge Efficiency: 73%@3.7V 900mA BAT IN
- Quiescent Current: <1 mA
- Operation Temperature: -4085
- Dimension: 33.0mm*63.0mm
- Protection Functions:
- BAT IN: over charge/over discharge/over current/reverse connection protection
- 5V/USB OUT: short circuit/over current/over heat protection
- SOLAR IN: reverse connection protection
Documents:
Product Includes:
- Solar Power Manager 5V x1
- Semi Flexible Monocrystalline Solar Panel (5V 1A)x1
- 2.54mm Black Jumper x1
- M3*10mm Nylon Pillar x4
- M3*5mm Stainless Steel Screw x4
- 14*14*7mm Black Aluminum Cooling Fin x1
- 14*14*0.5mm Thermal Conductive Silicone Pad x1
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