BQ25798

ACTIVO

Cargador solar de batería reductor-elevador de 1 a 4 celdas y 5 A controlado por I²C con selector de

Detalles del producto

Number of series cells 1, 2, 3, 4 Charge current (max) (A) 5 Vin (max) (V) 24 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (min) (V) 3 Battery charge voltage (max) (V) 18.8 Absolute max Vin (max) (V) 30 Control topology Switch-Mode Buck-boost Control interface I2C Features BAT temp thermistor monitoring (JEITA profile), BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, ICO (Input Current Optimization), IINDPM (Input current limit), Input OVP, Integrated ADC, Integrated LDO, Power Path, Solar input/MPPT, USB C/PD compatible, USB D+/D-/BC1.2 integrated, USB OTG integrated, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 3.6 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1, 2, 3, 4 Charge current (max) (A) 5 Vin (max) (V) 24 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (min) (V) 3 Battery charge voltage (max) (V) 18.8 Absolute max Vin (max) (V) 30 Control topology Switch-Mode Buck-boost Control interface I2C Features BAT temp thermistor monitoring (JEITA profile), BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, ICO (Input Current Optimization), IINDPM (Input current limit), Input OVP, Integrated ADC, Integrated LDO, Power Path, Solar input/MPPT, USB C/PD compatible, USB D+/D-/BC1.2 integrated, USB OTG integrated, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 3.6 Rating Catalog Operating temperature range (°C) -40 to 85
VQFN-HR (RQM) 29 16 mm² 4 x 4
  • High power density, high integration buck -boost charger for 1-4 cell batteries supporting USB PD 3.0 profile
    • Integrates four switching MOSFETs, BATFET
    • Integrates input and charging current sensing
  • Highly efficient
    • 750-kHz or 1.5-MHz switching frequencies
    • 5-A charging current with 10-mA resolution
      • 96.5% efficient: 16-V battery at 3A from 20V
  • Supports a wide range of input sources
    • Autonomously sampled open circuit voltage (VOC) maximum power point tracking (MPPT) for charging from a photovoltaic panel
    • 3.6-V to 24-V wide input operating voltage range with 30-V absolute maximum rating
    • Detects USB BC1.2, HVDCP and non-standard adapters
  • Dual-input power mux controller (optional)
  • Narrow voltage DC (NVDC) power path
  • Backup Mode with Ultra-fast switchover to adjustable voltage
  • Powers USB port from battery (USB OTG)
    • 2.8-V to 22-V OTG output voltage with 10-mV resolution to support USB-PD PPS
    • OTG output current regulation up to 3.32 A with 40-mA resolution
  • Flexible autonomous and I2C mode for optimal system performance
  • Integrated 16-bit ADC for voltage, current, and temperature monitoring
  • Low battery quiescent current
    • 17 µA for battery only operation
    • 500 nA in Charger Shutdown Mode
  • High accuracy
    • -0.25% to +0.65% charge voltage regulation for 2S batteries
    • ±5% charge current regulation
    • ±5% input current regulation
  • Safety
    • Thermal regulation and thermal shutdown
    • Input/battery OVP and OCP
    • Converter MOSFETs OCP
    • Charging safety timer
  • Package
    • 29-Pin 4 mm × 4 mm QFN
  • High power density, high integration buck -boost charger for 1-4 cell batteries supporting USB PD 3.0 profile
    • Integrates four switching MOSFETs, BATFET
    • Integrates input and charging current sensing
  • Highly efficient
    • 750-kHz or 1.5-MHz switching frequencies
    • 5-A charging current with 10-mA resolution
      • 96.5% efficient: 16-V battery at 3A from 20V
  • Supports a wide range of input sources
    • Autonomously sampled open circuit voltage (VOC) maximum power point tracking (MPPT) for charging from a photovoltaic panel
    • 3.6-V to 24-V wide input operating voltage range with 30-V absolute maximum rating
    • Detects USB BC1.2, HVDCP and non-standard adapters
  • Dual-input power mux controller (optional)
  • Narrow voltage DC (NVDC) power path
  • Backup Mode with Ultra-fast switchover to adjustable voltage
  • Powers USB port from battery (USB OTG)
    • 2.8-V to 22-V OTG output voltage with 10-mV resolution to support USB-PD PPS
    • OTG output current regulation up to 3.32 A with 40-mA resolution
  • Flexible autonomous and I2C mode for optimal system performance
  • Integrated 16-bit ADC for voltage, current, and temperature monitoring
  • Low battery quiescent current
    • 17 µA for battery only operation
    • 500 nA in Charger Shutdown Mode
  • High accuracy
    • -0.25% to +0.65% charge voltage regulation for 2S batteries
    • ±5% charge current regulation
    • ±5% input current regulation
  • Safety
    • Thermal regulation and thermal shutdown
    • Input/battery OVP and OCP
    • Converter MOSFETs OCP
    • Charging safety timer
  • Package
    • 29-Pin 4 mm × 4 mm QFN

The BQ25798 is a fully integrated switch-mode buck -boost charger for 1-4 cell Li-ion batteries and Li-polymer batteries. The integration includes 4 switching MOSFETs, input and charging current sensing circuits, the battery FET and all the loop compensation of the buck-boost converter. It uses NVDC power path management, regulating the system not dropping below a configurable minimum system voltage. When system power exceeds the input source rating, battery supplement mode supports the system without overloading the input source. BQ25798 also maximizes power from photovoltaic panels using its built-in VOC scaling MPPT algorithm. BQ25798 supports ultra-fast switchover from the adapter to a converted battery voltage in Backup Mode.

The BQ25798 is a fully integrated switch-mode buck -boost charger for 1-4 cell Li-ion batteries and Li-polymer batteries. The integration includes 4 switching MOSFETs, input and charging current sensing circuits, the battery FET and all the loop compensation of the buck-boost converter. It uses NVDC power path management, regulating the system not dropping below a configurable minimum system voltage. When system power exceeds the input source rating, battery supplement mode supports the system without overloading the input source. BQ25798 also maximizes power from photovoltaic panels using its built-in VOC scaling MPPT algorithm. BQ25798 supports ultra-fast switchover from the adapter to a converted battery voltage in Backup Mode.

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Documentación técnica

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* Data sheet BQ25798 I2C Controlled, 1- to 4-Cell, 5-A Buck-Boost Battery Charger with Dual-Input Selector, MPPT for Solar Panels and Fast Backup Mode datasheet (Rev. B) PDF | HTML 13 ene 2023
Technical article USB Type-C® and USB Power Delivery: Designing for both Extended Power Range and battery-powered systems PDF | HTML 24 sep 2024
Design guide Integrated USB Type-C PD and Charging Reference Design for 2-4 Cell Batteries (Rev. B) PDF | HTML 11 abr 2024
Application note Finding the Correct Battery Charging Design to Power Vacuum Robot System PDF | HTML 04 mar 2024
Application note Increasing NVCD Battery Chargers' Discharge Current PDF | HTML 10 ene 2024
Application note LiFePO4 Design Considerations PDF | HTML 26 jul 2023
Application note Choosing the Correct Solar Battery Charger for Your Solar Application PDF | HTML 22 jun 2023
Application note How to Quickly and Safely Charge Supercapacitors PDF | HTML 27 mar 2023
User guide BQ25792EVM, BQ25798EVM and BQ25798BKUPEVM (BMS034) Evaluation Module (Rev. E) PDF | HTML 12 jul 2022
White paper Combining Buck-Boost Battery Chargers and USB Type-C Power Delivery for Maximum (Rev. A) PDF | HTML 19 may 2022
Application note Implementing a Simple Maximum Power Point Tracking (MPPT) Algorithm PDF | HTML 16 dic 2021
Application note State of Charge Estimation Using Smart Battery Charger PDF | HTML 11 oct 2021
Technical article How to choose the right battery-charger IC for ultrasound point-of-care products PDF | HTML 24 mar 2021
Technical article Maximize power density with buck-boost charging and USB Type C™ Power Delivery PDF | HTML 29 jun 2020

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.

Placa de evaluación

BQ25798BKUPEVM — Módulo de evaluación de BQ25798 para cargador reductor-elevador controlado por I²C de 1 a 4 celdas y

El módulo de evaluación (EVM) BQ25798BKUPEVM se utiliza para evaluar el dispositivo BQ25798 en aplicaciones de modo de respaldo. BQ25798 es un dispositivo reductor-elevador integrado de modo conmutado para gestión de carga de baterías en encapsulado HOTROD (QFN), diseñado para baterías de iones de (...)
Guía del usuario: PDF | HTML
Placa de evaluación

BQ25798EVM — Módulo de evaluación de BQ25798 para cargador reductor-elevador controlado por I²C de 1 a 4 celdas y

El módulo de evaluación (EVM) BQ25798EVM se utiliza para evaluar el dispositivo BQ25798. El BQ25798 es un dispositivo integrado de modo conmutado reductor-elevador para gestión de carga de baterías en encapsulado HOTROD (QFN), diseñado para baterías de iones de litio y polímeros de 1 a 4 celdas de (...)
Guía del usuario: PDF | HTML
Placa de evaluación

USB-PD-CHG-EVM-01 — EVM de diseño de referencia de entrega de energía (PD) y carga de USB tipo C® para baterías de 2 a 4

The USB-PD-CHG-EVM-01 evaluation module (EVM) is used to evaluate the BQ25798 device and TPS25751 device together. The BQ25798 is an integrated switched-mode buck-boost battery charge management device in HOTROD (QFN) package, intended for 1- to 4-series cell Li-ion and Li-polymer batteries from (...)

Guía del usuario: PDF | HTML
Software de aplicación y estructura

TI-CHARGER-GUI — Software GUI para su uso con USB2ANY y módulos de evaluación de carga de la batería

The TI-CHARGER-GUI offers a web-based or standalone graphical user interface to assist in the process of evaluating, designing with, configuring or testing battery charger products. The software provides full access to registers and an easy interface to send and sequence commands.
Diseños de referencia

TIDA-050047 — Diseño de referencia de entrega de energía (PD) y carga de USB tipo C® para baterías de 2 a 4 celdas

Este diseño de referencia ofrece una carga de hasta 20 V a 5 A sin necesidad de FET externos, lo que permite un tamaño de solución mucho más pequeño y reduce el costo total de la BOM. Tampoco es necesario un microprocesador, ya que el controlador de suministro de energía (PD) TPS25750 gestionará la (...)
Design guide: PDF
Esquema: PDF
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
VQFN-HR (RQM) 29 Ultra Librarian

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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