Name: Sunflower: Solar Power Manager 9V/12V/18V
SKU: 220512

DFRobot is launching a brand new series - Sunflower, focusing on high-efficiency, small power solar energy management for and renewable energy applications. Solar Power Manager is complete small power and high-efficiency solar power management module. It features as MPPT (Maximum Power Point Tracking) function, maximizing the efficiency of the . 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: overcharge /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