Ultra Low power Harvester power Management IC with boost charger, and Nanopower Buck Converter
Product details
Parameters
Package | Pins | Size
Features
- Ultra Low Power DC-DC Boost Charger
- Cold-Start Voltage: VIN ≥ 600 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
- Energy Storage
- Energy can be Stored to Re-chargeable Li-ion Batteries, Thin-film Batteries, Super-capacitors, or Conventional Capacitors
- Battery Charging and Protection
- Internally Set Undervoltage Level
- User Programmable Overvoltage Levels
- 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
- Programmable Step Down Regulated Output (Buck)
- High Efficiency up to 93%
- Supports Peak Output Current up to 110 mA (typical)
- Programmable Maximum Power Point Tracking (MPPT)
- Provides Optimal Energy Extraction From a Variety of Energy Harvesters including Solar Panels, Thermal and Piezo Electric Generators
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Description
The bq25570 device is specifically designed to efficiently extract microwatts (µW) to milliwatts (mW) of power generated from a variety of high output 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 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).
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The bq25570 evaluation module (EVM) is a complete module for evaluating the bq25570 energy harvesting charger for storage elements like single-cell Li-Ion/Polymer batteries or super-capacitors. Intended to be powered by high impedance supplies, such as solar panels, thermo-electric generators (TEGs (...)
Features
- Programmable input voltage regulation setting via jumpers or resistors
- Programmable charger output voltage maximum setting via resistors (currently 4.2V)
- Programmable charger output voltage maximum setting via resistors (currently 1.8V)
- Programmable power good (BAT_OK) voltage setting via resistors (...)
Software development
Design tools & simulation
Reference designs
Design files
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download TIDA-00649 BOM.pdf (142KB) -
download TIDA-00649 Assembly Drawing.pdf (319KB) -
download TIDA-00649 PCB.pdf (1682KB) -
download TIDA-00649 CAD Files.zip (840KB) -
download TIDA-00649 Gerber.zip (530KB)
Design files
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download TIDA-00246 BOM.pdf (95KB) -
download TIDA-00246 Fabrication Drawing.pdf (301KB) -
download TIDA-00246 PCB.pdf (971KB) -
download TIDA-00246 CAD Files.zip (813KB)
Design files
-
download TIDA-00616 BOM.pdf (218KB) -
download TIDA-00616 Assembly Drawing.pdf (219KB) -
download TIDA-00616 PCB.pdf (84KB) -
download TIDA-00616 CAD Files.zip (1333KB) -
download TIDA-00616 Gerber.zip (345KB)
There (...)
Design files
-
download TIDA-00588 BOM.pdf (51KB) -
download TIDA-00588 Altium.zip (1435KB) -
download TIDA-00588 Gerber.zip (463KB)
Design files
-
download TIDA-00242 BOM.pdf (61KB) -
download TIDA-00242 PCB.pdf (308KB) -
download TIDA-00242 Gerber.zip (1322KB) -
download TIDA-00242 CAD Files.zip (1322KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
VQFN (RGR) | 20 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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