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  • bq2419x 具有窄范围 VDC 电源路径管理和 USB OTG 的 I2C 控制 4.5A 单节 USB/适配器充电器 4.5A 单节 USB/适配器充电器

    • ZHCSAD3B January   2012  – December 2014 BQ24190 , BQ24192 , BQ24192I

      PRODUCTION DATA.  

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  • bq2419x 具有窄范围 VDC 电源路径管理和 USB OTG 的 I2C 控制 4.5A 单节 USB/适配器充电器 4.5A 单节 USB/适配器充电器
  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 修订历史记录
  5. 5 说明 (续)
  6. 6 Device Comparison Table
  7. 7 Pin Configuration and Functions
  8. 8 Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 ESD Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 Typical Characteristics
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Device Power Up
        1. 9.3.1.1 Power-On-Reset (POR)
        2. 9.3.1.2 Power Up from Battery without DC Source
          1. 9.3.1.2.1 BATFET Turn Off
          2. 9.3.1.2.2 Shipping Mode
        3. 9.3.1.3 Power Up from DC Source
          1. 9.3.1.3.1 REGN LDO
          2. 9.3.1.3.2 Input Source Qualification
          3. 9.3.1.3.3 Input Current Limit Detection
          4. 9.3.1.3.4 D+/D- Detection Sets Input Current Limit in bq24190
          5. 9.3.1.3.5 PSEL/OTG Pins Set Input Current Limit in bq24192, bq24192I
          6. 9.3.1.3.6 HIZ State wth 100mA USB Host
          7. 9.3.1.3.7 Force Input Current Limit Detection
        4. 9.3.1.4 Converter Power-Up
        5. 9.3.1.5 Boost Mode Operation from Battery
      2. 9.3.2 Power Path Management
        1. 9.3.2.1 Narrow VDC Architecture
        2. 9.3.2.2 Dynamic Power Management
        3. 9.3.2.3 Supplement Mode
      3. 9.3.3 Battery Charging Management
        1. 9.3.3.1 Autonomous Charging Cycle
        2. 9.3.3.2 Battery Charging Profile
        3. 9.3.3.3 Battery Path Impedance IR Compensation
        4. 9.3.3.4 Thermistor Qualification
          1. 9.3.3.4.1 Cold/Hot Temperature Window
        5. 9.3.3.5 Charging Termination
          1. 9.3.3.5.1 Termination when REG02[0] = 1
          2. 9.3.3.5.2 Termination when REG05[6] = 1
        6. 9.3.3.6 Charging Safety Timer
        7. 9.3.3.7 USB Timer when Charging from USB100mA Source
      4. 9.3.4 Status Outputs (PG, STAT, and INT)
        1. 9.3.4.1 Power Good Indicator (PG)
        2. 9.3.4.2 Charging Status Indicator (STAT)
        3. 9.3.4.3 Interrupt to Host (INT)
      5. 9.3.5 Protections
        1. 9.3.5.1 Input Current Limit on ILIM
        2. 9.3.5.2 Thermal Regulation and Thermal Shutdown
        3. 9.3.5.3 Voltage and Current Monitoring in Buck Mode
          1. 9.3.5.3.1 Input Over-Voltage (ACOV)
          2. 9.3.5.3.2 System Over-Voltage Protection (SYSOVP)
        4. 9.3.5.4 Voltage and Current Monitoring in Boost Mode
          1. 9.3.5.4.1 VBUS Over-Voltage Protection
        5. 9.3.5.5 Battery Protection
          1. 9.3.5.5.1 Battery Over-Current Protection (BATOVP)
          2. 9.3.5.5.2 Charging During Battery Short Protection
          3. 9.3.5.5.3 System Over-Current Protection
      6. 9.3.6 Serial Interface
        1. 9.3.6.1 Data Validity
        2. 9.3.6.2 START and STOP Conditions
        3. 9.3.6.3 Byte Format
        4. 9.3.6.4 Acknowledge (ACK) and Not Acknowledge (NACK)
        5. 9.3.6.5 Slave Address and Data Direction Bit
          1. 9.3.6.5.1 Single Read and Write
          2. 9.3.6.5.2 Multi-Read and Multi-Write
    4. 9.4 Device Functional Modes
      1. 9.4.1 Host Mode and Default Mode
        1. 9.4.1.1 Plug in USB100mA Source with Good Battery
        2. 9.4.1.2 USB Timer when Charging from USB 100-mA Source
    5. 9.5 Register Map
      1. 9.5.1 I2C Registers
        1. 9.5.1.1  Input Source Control Register REG00 (bq24190, bq24192 reset = 00110000, or 30; bq24192I reset = 00111000, or 38)
        2. 9.5.1.2  Power-On Configuration Register REG01 (reset = 00011011, or 1B)
        3. 9.5.1.3  Charge Current Control Register REG02 (bq24190, bq24192 reset = 01100000, or 60; bq24192I reset = 00100000, or 20)
        4. 9.5.1.4  Pre-Charge/Termination Current Control Register REG03 (reset = 00010001, or 11)
        5. 9.5.1.5  Charge Voltage Control Register REG04 (bq24190, bq241192 reset = 10110010, or B2; bq24192I reset = 10011010, or 9A)
        6. 9.5.1.6  Charge Termination/Timer Control Register REG05 (reset = 10011010, or 9A)
        7. 9.5.1.7  IR Compensation / Thermal Regulation Control Register REG06 (reset = 00000011, or 03)
        8. 9.5.1.8  Misc Operation Control Register REG07 (reset = 01001011, or 4B)
        9. 9.5.1.9  System Status Register REG08
        10. 9.5.1.10 Fault Register REG09
        11. 9.5.1.11 Vender / Part / Revision Status Register REG0A (bq24190 reset = 00100011, or 23; bq24192 reset = 00101011, or 2B; bq24192I reset = 00001011, or 0B)
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 Inductor Selection
        2. 10.2.2.2 Input Capacitor
        3. 10.2.2.3 Output Capacitor
      3. 10.2.3 Application Performance Plots
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13器件和文档支持
    1. 13.1 文档支持
      1. 13.1.1 相关文档
    2. 13.2 相关链接
    3. 13.3 商标
    4. 13.4 静电放电警告
    5. 13.5 术语表
  14. 14机械、封装和可订购信息
  15. 重要声明
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DATA SHEET

bq2419x 具有窄范围 VDC 电源路径管理和 USB OTG 的 I2C 控制 4.5A 单节 USB/适配器充电器 4.5A 单节 USB/适配器充电器

本资源的原文使用英文撰写。 为方便起见,TI 提供了译文;由于翻译过程中可能使用了自动化工具,TI 不保证译文的准确性。 为确认准确性,请务必访问 ti.com 参考最新的英文版本(控制文档)。

1 特性

  • 高效 4.5A 开关模式充电器
    • 2A 充电电流下的充电效率达 92%;4A 充电电流下的充电效率达 90%
    • 通过电池路径阻抗补偿缩短充电时间
  • 兼容 MaxLife 技术,与 bq27531 搭配使用时可实现快速充电
  • 借助 12mΩ 电池放电金属氧化物半导体场效应晶体管 (MOSFET) 实现最高电池放电效率,放电电流高达 9A
  • 单输入 USB 兼容/适配器充电器
    • 与 USB 电池充电器技术规格 1.2 兼容的 USB 主机或充电端口 D+/D- 检测
    • 输入电压和电流限制支持 USB 2.0 和 USB 3.0
    • 输入电流限值:100mA、150mA、500mA、900mA、1.2A、1.5A、2A 和 3A
  • 输入工作电压范围:3.9V 至 17V
    • 通过输入电压动态电源管理 (DPM) 调节功能支持所有类型的适配器
  • USB OTG 5V/1.3A 同步升压转换器操作
    • 5V/1A 条件下的升压效率达 93%
  • 窄 VDC (NVDC) 电源路径管理
    • 与无电池或深度放电电池工作时可瞬时接通
    • 电池管理模式中的理想二极管运行
  • 薄型电感的开关频率为 1.5MHz
  • 具有或不具有主机管理的自主电池充电
    • 电池充电使能
    • 电池充电预调节
    • 充电终止和再充电
  • 高精度(0°C 至 125°C)
    • 充电电压调节范围为 ±0.5%
    • 充电电流调节范围为 ±7%
    • 输入电流调节范围为 ±7.5%
    • 升压模式下输出调节范围 ±2%
  • 高集成
    • 电源路径管理
    • 同步开关 MOSFET
    • 集成电流感测
    • 阴极负载二极管
    • 内部环路补偿
  • 安全性
    • 电池温度感测和充电安全定时器
    • 热调节和热关断
    • 输入系统过压保护
    • MOSFET 过流保护
  • 针对 LED 或主机处理器的充电状态输出
  • 低电池泄漏电流并支持关闭模式
  • 4.00mm x 4.00mm 紧凑型超薄四方扁平无引线 (VQFN)-24 封装

2 应用

  • 平板电脑和智能手机
  • 便携式音频扬声器
  • 便携式媒体播放器
  • 互联网器件

3 说明

bq24190、bq24192 和 bq24192I 是高度集成的开关模式电池管理和系统电源路径管理器件,适用于各类、平板电脑和其他便携式设备的单节锂离子和锂聚合物电池。

器件信息(1)

产品型号 封装 封装尺寸(标称值)
bq24190 VQFN (24) 4.00mm x 4.00mm
bq24192
bq24192I
  1. 如需了解所有可用封装,请见数据表末尾的可订购产品附录。
bq24190 bq24192 bq24192I Bq24190_with_D_D_Detection_charging_from_USB_SDP_DCP_SLUSAW5A.gif

4 修订历史记录

Changes from A Revision (October 2012) to B Revision

  • 已统一 整篇数据表 中的封装说明Go
  • Added ESD 额定值,特性 描述,器件功能模式,应用和实施,电源相关建议,布局,器件和文档支持以及机械、封装和可订购信息。Go
  • Added 特性:兼容 MaxLife 技术,与 bq27531 搭配使用时可实现快速充电Go
  • Changed VSLEEPZ, VBAT_DPL_HY, VBATGD , ICHG_20pct, VSHORT, IADPT_DPM, KILIM, VBTST_REFRESH in Electrical CharacteristicsGo
  • Added –40°C to 85° to IBAT Test ConditionGo
  • Added REG00[6:3] = 0110 (4.36 V) or 1011 (4.76 V) to VINDPM_REG_ACC Test ConditionsGo
  • Added Typical input current of 1.5 A based on KLIM to IADPT_DPM Test ConditionsGo
  • Added a MIN value of 435 to KILIMGo
  • Deleted TJunction_REG MIN and MAXGo
  • Added rising to VHTF parameter Go
  • Deleted VREGN, VVBUS = 5 V, IREGN = 20 mA MAX valueGo
  • Changed Functional Block DiagramGo
  • Changed Charging Current in Table 4Go
  • Changed REG09[5:4] to REG08[5:4] in Charging Termination sectionGo
  • Added or when FORCE_20PCT (REG02[0]) bit is set, to Charging Safety Timer descriptionGo
  • Added last paragraph to Charging Safety Timer descriptionGo
  • Added twice to Host Mode and Default Mode descriptionGo
  • Changed REG05[5:4]=11 to REG05[5:4]=00 in Host Mode and Default Mode descriptionGo
  • Changed Charge Current Control Register REG02 Bit 0 descriptionGo
  • Changed Charge Current Control Register REG02 Bit 0 noteGo
  • Changed REG05 Bit 0 from JEITA ISET (0°C-10°C) to ReservedGo
  • Changed REG07 Bit 4 from JEITA_VSET (45°C to 60°C) to ReservedGo
  • Changed BOOT to BTST in Figure 38Go
  • Changed BOOT to BTST in Figure 39Go
  • Changed bq24193 to bq24192 in Figure 42Go

5 说明 (续)

它的低阻抗电源路径对开关模式运行效率进行了优化、减少了电池充电时间并延长了放电阶段的电池寿命。具有充电和系统设置的 I2C 串行接口使得此器件成为一个真正地灵活解决方案。

此器件支持宽范围的输入源,其中包括标准 USB 主机端口,USB 充电端口和高功率 DC 适配器。为了设定默认输入电流限值,bq24190 根据 USB 电池充电规范 1.2 检测输入源,而 bq24192 和 bq24192I 从系统检测电路(如 USB PHY 器件)中获取结果。bq24190、192 和 192I 符合 USB 2.0 和 USB 3.0 电源规范,具有输入电流和电压调节功能。同时,bq24190、bq24192 和 bq24192I 具有高达 1.3A 的限流能力,能够为 VBUS 提供 5V 电压,符合 USB On-the-Go (OTG) 运行功率额定值规范。

电源路径管理将系统电压调节为稍稍高于电池电压,但是又不会下降到低于 3.5V 最小系统电压(可编程)。借助于这个特性,即使在电池电量完全耗尽或者电池被拆除时,系统也能保持运行。当达到输入电流限值或电压限值时,电源路径管理自动将充电电流减少为 0。随着系统负载持续增加,电源路径在满足系统电源需求之前将电池放电。这个补充模式运行防止输入源过载。

此器件在无需软件控制情况下启动并完成一个充电周期。它自动检测电池电压并通过三个阶段为电池充电:预充电、恒定电流和恒定电压。在充电周期的末尾,当充电电流低于在恒定电压阶段中预设定的限值时,充电器自动终止。当整个电池下降到低于再充电阈值时,充电器将自动启动另外一个充电周期。

bq24190、bq24192 和 bq24192I 提供针对电池充电和系统运行的多种安全 特性, 其中包括两组负温度系数热敏电阻监视、充电安全定时器和过压/过流保护。当结温超过 120°C(可设定)时,热调节减少充电电流。

STAT 输出报告充电状态和任何故障条件。bq24192 和 bq24192I 中的 PG 输出指示电源是否正常。 当故障发生时,INT 会立即通知主机。

bq24190、bq24192 和 bq24192I 采用 24 引脚、4.00mm x 4.00mm2 超薄型四方扁平无引线 (VQFN) 封装。

6 Device Comparison Table

bq24190 bq24192 bq24192I
I2C Address 6BH 6BH 6BH
USB Detection D+/D– PSEL PSEL
Default VINDPM 4.36 V 4.36 V 4.44 V
Default Battery Voltage 4.208 V 4.208 V 4.112 V
Default Charge Current 2.048 A 2.048 A 1.024 A
Default Adapter Current Limit 1.5 A 3 A 1.5 A
Maximum Pre-Charge Current 2.048 A 2.048 A 640 mA
Charging Temperature Profile Cold/Hot
2 TS pins
Cold/Hot
2 TS pins
Cold/Hot
2 TS pins
Status Output STAT STAT, PG STAT, PG
STAT During Fault Blinking at 1 Hz Blinking at1 Hz 10 k to ground

7 Pin Configuration and Functions

RGE Package
24-Pin VQFN With Exposed Thermal Pad
(Top View)
bq24190 bq24192 bq24192I Pinout1_SLUSAW5.gif
Blue pins indicate difference in pin names/functionality between devices.

Pin Functions

PIN NUMBER TYPE DESCRIPTION
bq24190 bq24192
bq24192I
VBUS VBUS 1,24 P Charger Input Voltage. The internal n-channel reverse block MOSFET (RBFET) is connected between VBUS and PMID with VBUS on source. Place a 1-µF ceramic capacitor from VBUS to PGND and place it as close as possible to IC. (Refer to Application Information Section for details)
D+ – 2 I
Analog
Positive line of the USB data line pair. D+/D– based USB host/charging port detection. The detection includes data contact detection (DCD) and primary detection in bc1.2.
– PSEL 2 I
Digital
Power source selection input. High indicates a USB host source and Low indicates an adapter source.
D– – 3 I
Analog
Negative line of the USB data line pair. D+/D– based USB host/charging port detection. The detection includes data contact detection (DCD) and primary detection in bc1.2.
– PG 3 O
Digital
Open drain active low power good indicator. Connect to the pull up rail via 10-kΩ resistor. LOW indicates a good input source if the input voltage is between UVLO and ACOV, above SLEEP mode threshold, and current limit is above 30 mA.
STAT STAT 4 O
Digital
Open drain charge status output to indicate various charger operation. Connect to the pull up rail via 10-kΩ. LOW indicates charge in progress. HIGH indicates charge complete or charge disabled. When any fault condition occurs, STAT pin in bq24190, bq24192 blinks at 1 Hz, and STAT pin in bq24192I has a 10-kΩ resistor to ground.
SCL SCL 5 I
Digital
I2C Interface clock. Connect SCL to the logic rail through a 10-kΩ resistor.
SDA SDA 6 I/O
Digital
I2C Interface data. Connect SDA to the logic rail through a 10-kΩ resistor.
INT INT 7 O
Digital
Open-drain Interrupt Output. Connect the INT to a logic rail via 10-kΩ resistor. The INT pin sends active low, 256-us pulse to host to report charger device status and fault.
OTG OTG 8 I
Digital
USB current limit selection pin during buck mode, and active high enable pin during boost mode.
In buck mode with USB host (PSEL=High), when OTG = High, IIN limit = 500 mA and when OTG = Low, IIN limit = 100 mA.
The boost mode is activated when the REG01[5:4] = 10 and OTG pin is High.
CE CE 9 I
Digital
Active low Charge Enable pin. Battery charging is enabled when REG01[5:4] = 01 and CE pin = Low. CE pin must be pulled high or low.
ILIM ILIM 10 I
Analog
ILIM pin sets the maximum input current limit by regulating the ILIM voltage at 1 V. A resistor is connected from ILIM pin to ground to set the maximum limit as IINMAX = (1V/RILIM) × 530. The actual input current limit is the lower one set by ILIM and by I2C REG00[2:0]. The minimum input current programmed on ILIM pin is 500 mA.
TS1 TS1 11 I
Analog
Temperature qualification voltage input #1. Connect a negative temperature coefficient thermistor. Program temperature window with a resistor divider from REGN to TS1 to GND. Charge suspends when either TS pin is out of range. Recommend 103AT-2 thermistor.
TS2 TS2 12 I
Analog
Temperature qualification voltage input #2. Connect a negative temperature coefficient thermistor. Program temperature window with a resistor divider from REGN to TS2 to GND. Charge suspends when either TS pin is out of range. Recommend 103AT-2 thermistor.
BAT BAT 13,14 P Battery connection point to the positive terminal of the battery pack. The internal BATFET is connected between BAT and SYS. Connect a 10 µF closely to the BAT pin.
SYS SYS 15,16 P System connection point. The internal BATFET is connected between BAT and SYS. When the battery falls below the minimum system voltage, switch-mode converter keeps SYS above the minimum system voltage. (Refer to Application Information Section for inductor and capacitor selection.)
PGND PGND 17,18 P Power ground connection for high-current power converter node. Internally, PGND is connected to the source of the n-channel LSFET. On PCB layout, connect directly to ground connection of input and output capacitors of the charger. A single point connection is recommended between power PGND and the analog GND near the IC PGND pin.
SW SW 19,20 O
Analog
Switching node connecting to output inductor. Internally SW is connected to the source of the n-channel HSFET and the drain of the n-channel LSFET. Connect the 0.047-µF bootstrap capacitor from SW to BTST.
BTST BTST 21 P PWM high side driver positive supply. Internally, the BTST is connected to the anode of the boost-strap diode. Connect the 0.047-µF bootstrap capacitor from SW to BTST.
REGN REGN 22 P PWM low side driver positive supply output. Internally, REGN is connected to the cathode of the boost-strap diode. Connect a 4.7-µF (10-V rating) ceramic capacitor from REGN to analog GND. The capacitor should be placed close to the IC. REGN also serves as bias rail of TS1 and TS2 pins.
PMID PMID 23 O
Analog
Connected to the drain of the reverse blocking MOSFET and the drain of HSFET. Given the total input capacitance, connect a 1-µF capacitor on VBUS to PGND, and the rest all on PMID to PGND. (Refer to Application Information Section for details)
Thermal Pad – – P Exposed pad beneath the IC for heat dissipation. Always solder thermal pad to the board, and have vias on the thermal pad plane star-connecting to PGND and ground plane for high-current power converter.

 

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