TI's BQ25504 is a new integrated nano-energy energy harvesting power management solution that is ideal for ultra-low power applications with special needs. The product is specifically designed to efficiently acquire and manage microwatts and milliwatts of electricity, usually from a variety of photovoltaic solar DC sources or thermal motor generators. The BQ25504 is a highly efficient implementation of converters or chargers for products and systems, for example in applications where there is a stringent need for operational power consumption in radio sensor networks. The DC/DC boost converter/charger, designed with the BQ25504, requires only milliwatts of power to operate.
BQ25504 main features
The BQ25504 is an ultra low power, high efficiency DC/DC boost converter/charger.
Continuously harvest energy from low input sources: VIN ≥ 80mV (typical) Ultra low quiescent current: IQ "330 nA (typical)
Figure 1 BQ25504 block diagram
Figure 2 BQ25504 design schematic
Cold start voltage: VIN ≥ 330 mV (typical), programmable dynamic maximum power point tracking (MPPT)
Integrated dynamic maximum power point tracking for extracting optimal energy (from various energy sources), input voltage regulation, preventing input source energy damage
Energy can be stored in rechargeable lithium-ion batteries, thin-film batteries, supercapacitors, or traditional capacitor batteries, charging and protection
User programmable undervoltage and overvoltage
On-chip temperature sensor, programmable over-temperature shutdown battery status output
Battery good output pin
Programmable threshold and hysteresis
Power loss microcontroller warning
Load that can be used to enable/disable the system
BQ25504 application
Energy harvesting
solar power charger
Thermal Power Generator (TEG) acquisition
Wireless Sensor Network (WSN)
Industrial monitoring
Environmental monitoring
Bridge Structure Health Monitoring (SHM)
Intelligent building control
Portable and wearable medical devices
Entertainment system remote control
BQ25504 reference design main features
Table 1 BQ25504 design plan material list
Evaluation module of BQ25504
Ultra Low Power Boost Converter/Charger and Battery Management for Energy Harvesting Applications
Undervoltage, overvoltage resistor programmable settings, flexible battery management, POTS including fine-tuning settings (not assembled on board)
Programmable push-pull output indicator for battery status (VBAT_OK)
Key signal test points for testing, easy to detect connections
Jumpers are easy to change settings
24V Switching Wall Charger
About this item
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Input: AC 100-240V 50/60Hz; Output: DC 24V Switching wall charger
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Plug Type: DC Plug 5.5 x 2.1mm;AC Plug US Plug, Cable Length: 1.2m /1.5m
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Dimensions (WxLxH): 4.7" x 2" x 1.5", Small and lightweight for convenience, portability and storage. Easy to take anywhere!
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Built-in protection of over current, over voltage, short circuits
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This Power Adapter can ensures consistent power and reliable performance for your devices. Can work for 5050 3528 LED Strip 3D Printer CCTV Security System LCD Monitor.
24V Switching Wall Charger
About this item
- Input: AC 100-240V 50/60Hz; Output: DC 24V Switching wall charger
- Plug Type: DC Plug 5.5 x 2.1mm;AC Plug US Plug, Cable Length: 1.2m /1.5m
- Dimensions (WxLxH): 4.7" x 2" x 1.5", Small and lightweight for convenience, portability and storage. Easy to take anywhere!
- Built-in protection of over current, over voltage, short circuits
-
This Power Adapter can ensures consistent power and reliable performance for your devices. Can work for 5050 3528 LED Strip 3D Printer CCTV Security System LCD Monitor.
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Shenzhen Waweis Technology Co., Ltd. , https://www.huaweishiadapter.com