PSM-BQ25570, CJMCU-2557 BQ25570 Nano Power Energy Harvester DC-DC Step-up Boost Converter Charger Module

CJMCU-2557 BQ25570 Nano Power Energy Harvester DC-DC Step-up Boost Converter Solar Energy Board Nano Power Boost Charger Module

The BQ25570 is specifically designed to efficiently extract microwatts (µW) to milliwatts (mW) of power generated from a variety of high  impedance DC sources like photovoltaic (solar) or thermal electric generators (TEG) without collapsing those sources. The battery management features ensure that a rechargeable battery is not overcharged by this extracted power, with voltage boosted, or depleted beyond safe limits by a system load. In addition to the highly efficient boosting charger, the bq25570 integrates a highly efficient, nano- power Loads buck converter for providing a second power rail to systems such as wireless sensor networks (WSN) which have stringent power and operational demands. All the capabilities of BQ25570 are packed into a small foot-print 20-lead 3.5-mm x 3.5-mm QFN package (RGR).

Applications:

• Energy Harvesting
• Solar Chargers
• Thermal Electric Generator (TEG) Harvesting
• Wireless Sensor Networks (WSN)
• Low Power Wireless Monitoring
• Environmental Monitoring
• Bridge and Structural Health Monitoring (SHM)
• Smart Building Controls
• Portable and Wearable Health Devices
• Entertainment System Remote Controls

Features:

1. Ultra Low Power DC-DC Boost Charger
   
   Cold-start Voltage: VIN ≥ 330 mV
   Continuous Energy Harvesting From VIN as low as 100 mV
   Input Voltage Regulation Prevents Collapsing High Impedance Input Sources
   Full Operating Quiescent Current of 488 nA (typical)
   Ship Mode with < 5 nA From Battery
   
   
2. Energy Storage
   
   Energy can be Stored to Re-chargeable Li-ion Batteries, Thin-film Batteries, Super-
   capacitors, or Conventional Capacitors
   
   
3. Battery Charging and Protection
   
   Internally Set Undervoltage Level
   User Programmable Overvoltage Levels
   
   
4. Battery Good Output Flag
   
   Programmable Threshold and Hysteresis
   Warn Attached Microcontrollers of Pending Loss of Power
   Can be Used to Enable or Disable System Loads
   
   
5. Programmable Step Down Regulated Output (Buck)
   
   High Efficiency up to 93%
   Supports Peak Output Current up to 110 mA (typical)
   
   
6. Programmable Maximum Power Point Tracking (MPPT)
   
   Provides Optimal Energy Extraction From a Variety of Energy Harvesters including Solar Panels, Thermal and Piezo Electric Generators.

Package includes:

1 x CJMCU-2557 BQ25570 Nano Power Boost Charger