Ejemplo de código o demostración
BQ25505
CI de gestión de potencia de cosechadora de potencia ultrabaja con cargador de impulso y multiplexor
Hoja de datos
BQ25505
- Ultra Low-Power With High-Efficiency DC-DC Boost Charger
- Cold-Start Voltage: VIN ≥ 600 mV
- Continuous Energy Harvesting From Input Sources as Low as 100 mV
- Ultra-Low Quiescent Current of 325 nA
- Input Voltage Regulation Prevents Collapsing High-Impedance Input Sources
- Ship Mode With < 5 nA From Battery
- Energy Storage
- Energy can be Stored to Rechargeable Li-Ion Batteries, Thin-Film Batteries, Super-Capacitors, or Conventional Capacitors
- Battery Charging and Protection
- Internally Set Undervoltage Level
- User-Programmable Overvoltage Level
- 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 Maximum Power Point Tracking (MPPT)
- Integrated MPPT for Optimal Energy Extraction From a Variety of Energy Harvesters
- Gate Drivers for Primary (Nonrechargeable) and Secondary (Rechargeable) Storage Element Multiplexing
- Autonomous Switching Based on VBAT_OK
- Break-Before-Make Prevents System Rail Droop
The bq25505 device is specifically designed to efficiently extract the microwatts (µW) to miliwatts (mW) of power generated from a variety of DC energy harvesting, high-impedance sources like photovoltaic (solar) or thermal electric generators (TEGs) without collapsing those sources. The battery-management features of the bq25505 ensure that a secondary rechargeable battery is not overcharged by this extracted power, with voltage boosted, nor depleted beyond safe limits by a system load. The integrated multiplexer gate drivers autonomously switch the system load to a primary nonrechargeable battery if the secondary battery voltage falls below the user-defined VBAT_OK threshold.
Documentación técnica
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Ver todo 8 | Tipo | Título | Fecha | ||
|---|---|---|---|---|
| * | Data sheet | bq25505 ultra low-power boost charger with battery management and autonomous power multiplexer for primary battery in energy harvester applications datasheet (Rev. F) | PDF | HTML | 06 mar 2019 |
| Technical article | Experience seamless shopping thanks to electronic shelf labels | PDF | HTML | 10 oct 2018 | |
| Technical article | How energy harvesting can extend the life of your fault indicator on the grid | PDF | HTML | 18 oct 2017 | |
| White paper | Cities grow smarter through innovative semiconductor technologies | 07 jul 2017 | ||
| User guide | User's Guide for bq25505 Battery Charger Evaluation Module for Energy Harvesting (Rev. A) | 23 ago 2014 | ||
| Product overview | Battery Management Solutions for Wearable and Fitness Devices (Rev. C) | 18 ago 2014 | ||
| Analog Design Journal | Accurately measuring efficiency of ultralow-IQ devices | 22 ene 2014 | ||
| Product overview | Industry’s Most Efficient Nano Power Harvesting Solutions (Rev. A) | 08 nov 2013 |
Diseño y desarrollo
Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.
Herramienta de cálculo
SLUC484 — bq25505/70 Design Help V1.3
Productos y hardware compatibles
Diseños de referencia
TIDA-00488 — Diseño de referencia del nodo del sensor de luz ambiental y ambiente de captación de energía para re
TIDA-00488 demonstrates an ultra-low power and a renewable method of wireless environmental sensing using daylight energy harvesting with a long backup battery life. This reference design uses our ultra-low power harvester power management SimpleLink™ ultra-low power sub-1 GHz wireless (...)
Diseños de referencia
TIDA-00998 — Diseño de referencia del subsistema del indicador de falla y recolección de energía para los indicad
This reference design shows multiple architectures for extending primary battery life using a secondary battery or supercapacitor with energy harvested from a current transformer (CT) or solar cells. Optimal power management is done using efficient LED drivers to drive series or parallel (...)
Diseños de referencia
TIDA-00100 — Diseño de referencia de captación de energía de luz interior para el subsistema de baliza Bluetooth
The Indoor Light Energy Harvesting Reference Design for Bluetooth Low Energy (BLE) Beacon Subsystem provides a solution where by with just the power of the typical indoor lighting in a retail environment (greater than 250 LUX) the Bluetooth Low Energy chip can broadcast BLE beacons.
This subsystem (...)
| Paquete | Pasadores | Descargar |
|---|---|---|
| VQFN (RGR) | 20 | Ver opciones |
Pedidos y calidad
Información incluida:
- RoHS
- REACH
- Marcado del dispositivo
- Acabado de plomo/material de la bola
- Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
- Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
- Contenido del material
- Resumen de calificaciones
- Monitoreo continuo de confiabilidad
Información incluida:
- Lugar de fabricación
- Lugar de ensamblaje
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Soporte y capacitación
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