产品详细信息

Number of series cells 1, 2, 3 Charge current (Max) (A) 4 Operating Vin (Max) (V) 17 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (Min) (V) 4.2, 8.4, 12.6 Battery charge voltage (Max) (V) 4.2, 8.4, 12.6 Absolute Vin (safety rating) (Max) ((V)) 20 Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Input OVP, Power Path Operating Vin (Min) (V) 4.5 Rating Catalog
Number of series cells 1, 2, 3 Charge current (Max) (A) 4 Operating Vin (Max) (V) 17 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (Min) (V) 4.2, 8.4, 12.6 Battery charge voltage (Max) (V) 4.2, 8.4, 12.6 Absolute Vin (safety rating) (Max) ((V)) 20 Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Input OVP, Power Path Operating Vin (Min) (V) 4.5 Rating Catalog
VQFN (RGY) 24 19 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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技术文档

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类型 项目标题 下载最新的英语版本 日期
* 数据表 bq2417x 1.6-MHz Synchronous Switched-Mode Li-Ion and Li-Polymer Stand-Alone Battery Charger With Integrated MOSFETs and Power Path Selector 数据表 (Rev. C) PDF | HTML 30 Apr 2015
应用手册 BQ241xx/BQ246xx Selection of Multi-Cell Standalone Switching Battery Chargers 31 Dec 2019
技术文章 When to use rechargeable batteries in small battery applications 01 Oct 2019
选择指南 电源管理指南 2018 (Rev. K) 31 Jul 2018
技术文章 Understanding battery charger features and charging topologies 19 Sep 2016
技术文章 Should I use a linear charger or a switching charger? 31 Oct 2015
技术文章 Summertime and the livin' is easy 20 Jun 2014
用户指南 bq24170 12 Nov 2010

设计和开发

如需其他信息或资源,请查看下方列表,点击标题即可进入详情页面。

评估板

BQ24170EVM-610-15V — 用于 BQ24170 1.6MHz 同步开关模式锂离子和锂聚合物电池充电器的评估模块

德州仪器 (TI) BQ24170EVM-610-15V (-002) 评估模块能帮助设计人员评估 bq24170 同步电池充电器的操作和性能。该 EVM 也称为 HPA610 (-002)。该 EVM 针对 12V 或 15V 输入电压进行了优化,可为 1 至 3 节锂离子电池充电。bq24170 是高度集成的独立锂离子和锂聚合物开关模式电池充电控制器,具有两个集成式 N 通道功率 MOSFET 和功率路径选择器闸极驱动器。它可以为恒频同步 PWM 控制器提供高准确度输入电流、充电电流和电压调节。它还提供电池检测、预处理、充电终止和充电状态监控。本用户指南包含该 EVM (...)

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评估板

BQ24170EVM-610-5V — 用于 BQ24170 1.6MHz 同步开关模式锂离子和锂聚合物电池充电器的评估模块

德州仪器 (TI) BQ24170EVM-610-5V (-001) 评估模块能帮助设计人员评估 bq24170 同步电池充电器的操作和性能。该 EVM 也称为 HPA610 (-001)。该 EVM 针对 5V 输入电压进行了优化,可为单节 4.2V 锂离子电池充电。bq24170 是高度集成的独立锂离子和锂聚合物开关模式电池充电控制器,具有两个集成式 N 通道功率 MOSFET 和功率路径选择器闸极驱动器。它可以为恒频同步 PWM 控制器提供高准确度输入电流、充电电流和电压调节。它还提供电池检测、预处理、充电终止和充电状态监控。本用户指南包含该 EVM 物料清单、板面布局和原理图。

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计算工具

bq2417x Calculation Tool V1.0 bq2417x Calculation Tool V1.0

计算工具

bqswitcherII calculation tools V1.2 (Rev. A) bqswitcherII calculation tools V1.2 (Rev. A)

光绘文件

HPA610 Gerber Files HPA610 Gerber Files

参考设计

TIDA-00027 — 1.6MHz 同步开关模式锂离子/锂聚合物独立电池充电器参考设计

此参考设计将独立的锂离子和锂聚合物开关模式蓄电池充电解决方案与两个集成 N 通道功率 MOSFET 和一个电源路径选择器闸极驱动器进行高度集成。它可以为恒频同步 PWM 控制器提供高准确度输入电流、充电电流和电压调节。它还提供电池检测、预处理、充电终止和充电状态监控。此参考设计又称为 HPA715 (-001)。该解决方案针对 5 V 输入电压进行了优化,并可给 4.2 V 的单节锂离子蓄电池充电。
参考设计

TIDA-00028 — 1.6MHz 同步开关模式锂离子和锂聚合物独立电池充电器 (4A) 参考设计

此参考设计将独立的锂离子和锂聚合物开关模式蓄电池充电解决方案与两个集成 N 通道功率 MOSFET 和一个电源路径选择器闸极驱动器进行高度集成。它可以为恒频同步 PWM 控制器提供高准确度输入电流、充电电流和电压调节。它还提供电池检测、预处理、充电终止和充电状态监控。此参考设计又称为 HPA715 (-001)。该解决方案针对 5 V 输入电压进行了优化,并可给 4.2 V 的单节锂离子蓄电池充电。
参考设计

TIDA-00026 — 可编程多化合物快速充电管理参考设计

该参考设计是可编程的单片 IC 解决方案,适用于单化学物或多化学物应用中对镍镉 (NiCd)、镍氢 (NiMH) 或锂离子 (Li-Ion) 电池的快速充电管理。其会选用合适的电池化学物(镍或锂),并使用最佳的充电和终止算法执行操作。该过程消除了不良充电、充电不足或过度充电的情况,并确保快速充电的精确度和安全终止。
封装 引脚数 下载
VQFN (RGY) 24 了解详情

订购和质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 认证摘要
  • 持续可靠性监测

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