BQ24172

ACTIVO

Cargador de batería reductor síncrono de 1-3 celdas y 4 A independiente

Detalles del producto

Number of series cells 1, 2, 3 Charge current (max) (A) 4 Vin (max) (V) 17 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4, NiMH Battery charge voltage (min) (V) 2.1 Battery charge voltage (max) (V) 15.5 Absolute max Vin (max) (V) 20 Control topology Switch-Mode Buck Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Input OVP, Power Path Vin (min) (V) 4.5 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1, 2, 3 Charge current (max) (A) 4 Vin (max) (V) 17 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4, NiMH Battery charge voltage (min) (V) 2.1 Battery charge voltage (max) (V) 15.5 Absolute max Vin (max) (V) 20 Control topology Switch-Mode Buck Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Input OVP, Power Path Vin (min) (V) 4.5 Rating Catalog Operating temperature range (°C) -40 to 85
VQFN (RGY) 24 19.25 mm² 5.5 x 3.5
  • 1.6-MHz Synchronous Switched-Mode Charger
    with 4-A Integrated N-MOSFETs
  • Up to 94% Efficiency
  • 30-V Input Rating with Adjustable Overvoltage
    Protection
    • 4.5-V to 17-V Input Operating Voltage Range
  • Battery Charge Voltage
    • bq24170: 1-, 2-, or 3-Cell with 4.2 V/Cell
    • bq24172: Adjustable Charge Voltage
  • High Integration
    • Automatic Power Path Selector Between
      Adapter and Battery
    • Dynamic Power Management
    • Integrated 20-V Switching MOSFETs
    • Integrated Bootstrap Diode
    • Internal Digital Soft Start
  • Safety
    • Thermal Regulation Loop Throttles Back
      Current to Limit TJ = 120°C
    • Thermal Shutdown
    • Battery Thermistor Sense Hot/Cold Charge
      Suspend and Battery Detect
    • Adjustable Input Overvoltage Protection
    • Cycle-by-Cycle Current Limit
  • Accuracy
    • ±0.5% Charge Voltage Regulation
    • ±4% Charge Current Regulation
    • ±4% Input Current Regulation
  • <15-µA Battery Current With Adapter Removed
  • <1.5-mA Input Current With Adapter Present and
    Charge Disabled
  • 1.6-MHz Synchronous Switched-Mode Charger
    with 4-A Integrated N-MOSFETs
  • Up to 94% Efficiency
  • 30-V Input Rating with Adjustable Overvoltage
    Protection
    • 4.5-V to 17-V Input Operating Voltage Range
  • Battery Charge Voltage
    • bq24170: 1-, 2-, or 3-Cell with 4.2 V/Cell
    • bq24172: Adjustable Charge Voltage
  • High Integration
    • Automatic Power Path Selector Between
      Adapter and Battery
    • Dynamic Power Management
    • Integrated 20-V Switching MOSFETs
    • Integrated Bootstrap Diode
    • Internal Digital Soft Start
  • Safety
    • Thermal Regulation Loop Throttles Back
      Current to Limit TJ = 120°C
    • Thermal Shutdown
    • Battery Thermistor Sense Hot/Cold Charge
      Suspend and Battery Detect
    • Adjustable Input Overvoltage Protection
    • Cycle-by-Cycle Current Limit
  • Accuracy
    • ±0.5% Charge Voltage Regulation
    • ±4% Charge Current Regulation
    • ±4% Input Current Regulation
  • <15-µA Battery Current With Adapter Removed
  • <1.5-mA Input Current With Adapter Present and
    Charge Disabled

The bq2417x device is a highly integrated stand-alone Li-Ion and Li-Polymer switched-mode battery charger with two integrated N-channel power MOSFETs. The device offers a constant-frequency synchronous PWM controller with high-accuracy regulation of input current, charge current, and voltage. The bq2417x closely monitors the battery pack temperature to allow charge only in a preset temperature window. The bq24170 charges one, two, or three cells (selected by CELL pin), and the bq24172 is adjustable for up to three series Li+ cells.

The device charges the battery in three phases: precondictioning, constant current, and constant voltage.

Charge is terminated when the current reaches 10% of the fast charge rate. A programmable charge timer offers a safety backup. The bq2417x automatically restarts the charge cycle if the battery voltage falls below an internal threshold, and enters a low-quiescent current sleep mode when the input voltage falls below the battery voltage.

The bq2417x features Dynamic Power Management (DPM) to reduce the charge current when the input power limit is reached to avoid overloading the adapter. A highly accurate current-sense amplifier enables precise measurement of input current from adapter to monitor overall system power.

The bq2417x provides power path selector gate driver ACDRV/CMSRC on input NMOS pair ACFET (Q1) and RBFET (Q2), and BATDRV on a battery PMOS device (Q3). When the qualified adapter is present, the system is directly connected to the adapter. Otherwise, the system is connected to the battery. In addition, the power path prevents battery from boosting back to the input.

The bq2417x charges a battery from a DC source as high as 17 V, including a car battery. The input overvoltage limit is adjustable through the OVPSET pin. The AVCC, ACP, and ACN pins have a 30-V rating. When a high-voltage DC source is inserted, Q1 and Q2 remain off to avoid high voltage damage to the system.

For 1-cell applications, if the battery is not removable, the system can be directly connected to the battery to simplify the power path design and reduce the cost. With this configuration, the battery can automatically supplement the system load if the adapter is overloaded.

The bq2417x is available in a 24-pin, 5.5-mm × 3.5-mm thin VQFN package.

The bq2417x device is a highly integrated stand-alone Li-Ion and Li-Polymer switched-mode battery charger with two integrated N-channel power MOSFETs. The device offers a constant-frequency synchronous PWM controller with high-accuracy regulation of input current, charge current, and voltage. The bq2417x closely monitors the battery pack temperature to allow charge only in a preset temperature window. The bq24170 charges one, two, or three cells (selected by CELL pin), and the bq24172 is adjustable for up to three series Li+ cells.

The device charges the battery in three phases: precondictioning, constant current, and constant voltage.

Charge is terminated when the current reaches 10% of the fast charge rate. A programmable charge timer offers a safety backup. The bq2417x automatically restarts the charge cycle if the battery voltage falls below an internal threshold, and enters a low-quiescent current sleep mode when the input voltage falls below the battery voltage.

The bq2417x features Dynamic Power Management (DPM) to reduce the charge current when the input power limit is reached to avoid overloading the adapter. A highly accurate current-sense amplifier enables precise measurement of input current from adapter to monitor overall system power.

The bq2417x provides power path selector gate driver ACDRV/CMSRC on input NMOS pair ACFET (Q1) and RBFET (Q2), and BATDRV on a battery PMOS device (Q3). When the qualified adapter is present, the system is directly connected to the adapter. Otherwise, the system is connected to the battery. In addition, the power path prevents battery from boosting back to the input.

The bq2417x charges a battery from a DC source as high as 17 V, including a car battery. The input overvoltage limit is adjustable through the OVPSET pin. The AVCC, ACP, and ACN pins have a 30-V rating. When a high-voltage DC source is inserted, Q1 and Q2 remain off to avoid high voltage damage to the system.

For 1-cell applications, if the battery is not removable, the system can be directly connected to the battery to simplify the power path design and reduce the cost. With this configuration, the battery can automatically supplement the system load if the adapter is overloaded.

The bq2417x is available in a 24-pin, 5.5-mm × 3.5-mm thin VQFN package.

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Documentación técnica

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Tipo Título Fecha
* Data sheet bq2417x 1.6-MHz Synchronous Switched-Mode Li-Ion and Li-Polymer Stand-Alone Battery Charger With Integrated MOSFETs and Power Path Selector datasheet (Rev. C) PDF | HTML 30 abr 2015
Application note BQ241xx/BQ246xx Selection of Multi-Cell Standalone Switching Battery Chargers 31 dic 2019
User guide bq24171EVM and bq24172EVM User's Guide (Rev. A) 22 feb 2011

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

BQ24172EVM-706-15V — Módulo de evaluación para cargador de batería de polímero de litio e iones de litio de modo conmutad

The Texas Instruments BQ24172EVM-706-15V (-002) evaluation module helps designers evaluate the operation and performance of the bq24172 synchronous battery charger. The EVM is also called the HPA706 (-002). This EVM is optimized for a 12V or 15V input voltage and charges between 1 and 3 cell (...)

Guía del usuario: PDF
Placa de evaluación

BQ24172EVM-706-5V — Módulo de evaluación para cargador de batería de polímero de litio e iones de litio de modo conmutad

The Texas Instruments BQ24172EVM-706-5V (-001) evaluation module helps designers evaluate the operation and performance of the bq24172 synchronous battery charger. The EVM is also called the HPA706 (-001). This EVM is optimized for 5V input voltage and charges a single cell 4.2V Li-ion battery. (...)

Guía del usuario: PDF
Herramienta de cálculo

SLUC231 bq2417x Calculation Tool V1.0

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Circuitos integrados para cargadores de baterías
BQ24170 Cargador de batería reductor síncrono de 1-3 celdas 4A independiente con selector ruta de alimentaci BQ24172 Cargador de batería reductor síncrono de 1-3 celdas y 4 A independiente
Herramienta de cálculo

SLUC244 bqswitcherII calculation tools V1.2

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Circuitos integrados para cargadores de baterías
BQ24130 Cargador de batería reductor de 1-3 celdas para iones de litio y supercondensador BQ24133 Cargador de batería reductor síncrono de 1-3 celdas 2,5 A independiente con ruta de alimentación ext BQ24170 Cargador de batería reductor síncrono de 1-3 celdas 4A independiente con selector ruta de alimentaci BQ24171 Cargador de batería reductor síncrono de 1-3 celdas 4 A independiente compatible con JEITA y ruta de BQ24172 Cargador de batería reductor síncrono de 1-3 celdas y 4 A independiente
Archivo Gerber

HPA706 Gerber Files

SLUC235.ZIP (308 KB)
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
VQFN (RGY) 24 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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Soporte y capacitación

Foros de TI E2E™ con asistencia técnica de los ingenieros de TI

El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.

Si tiene preguntas sobre la calidad, el paquete o el pedido de productos de TI, consulte el soporte de TI. ​​​​​​​​​​​​​​

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