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電池管理 IC
電池充電器 IC

BQ25750

現行

具有電源路徑的獨立式或 I²C 控制 70-V 雙向降壓升壓充電控制器

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產品規格表

BQ25750

現行
產品規格表 立即訂購

產品詳細資料

Number of series cells 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 Charge current (max) (A) 20 Vin (max) (V) 70 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4, NiMH, SuperCap Battery charge voltage (min) (V) 0 Battery charge voltage (max) (V) 70 Absolute max Vin (max) (V) 85 Control topology Switch-Mode Buck-boost Control interface I2C Features Adjustable switching frequency, BAT temp thermistor monitoring (JEITA profile), Bidirectional, IC thermal regulation, ICO (Input Current Optimization), IINDPM (Input current limit), Input OVP, Integrated ADC, Integrated LDO, Power Path, SYNC Pin, Solar input/MPPT, USB C/PD compatible, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 4.2 Rating Catalog Operating temperature range (°C) -40 to 125
Number of series cells 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 Charge current (max) (A) 20 Vin (max) (V) 70 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4, NiMH, SuperCap Battery charge voltage (min) (V) 0 Battery charge voltage (max) (V) 70 Absolute max Vin (max) (V) 85 Control topology Switch-Mode Buck-boost Control interface I2C Features Adjustable switching frequency, BAT temp thermistor monitoring (JEITA profile), Bidirectional, IC thermal regulation, ICO (Input Current Optimization), IINDPM (Input current limit), Input OVP, Integrated ADC, Integrated LDO, Power Path, SYNC Pin, Solar input/MPPT, USB C/PD compatible, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 4.2 Rating Catalog Operating temperature range (°C) -40 to 125
VQFN (RRV) 36 30 mm² 6 x 5
  • Wide input voltage operating range: 4.2 V to 70 V
  • Wide battery voltage operating range: up-to 70 V with multi-chemistry support:
    • 1- to 14-cell Li-ion charge profile
    • 1- to 16-cell LiFePO 4 charge profile
  • Synchronous buck-boost charge controller with NFET drivers
    • Adjustable switching frequency from 200 kHz to 600 kHz
    • Optional synchronization to external clock
    • Integrated loop compensation with soft start
    • Optional gate driver supply input for optimized efficiency
  • Bidirectional converter operation (Reverse Mode) supporting USB-PD Extended Power Range (EPR)
    • Adjustable input voltage (VAC) regulation from 3.3 V to 65 V with 20-mV/step
    • Adjustable input current regulation (R AC_SNS) from 400 mA to 20 A with 50-mA/step using 5-mΩ resistor
  • Direct power path management for highest efficiency to power system
    • System power selection from adapter or battery
    • Dynamic power management
    • All N-channel FET drivers
  • High accuracy
    • ±0.5% charge voltage regulation
    • ±3% charge current regulation
    • ±3% input current regulation
  • I 2C controlled for optimal system performance with resistor-programmable option
    • Hardware adjustable input and output current limits
  • Integrated 16-bit ADC for voltage, current, and temperature monitoring
  • Low battery quiescent current
  • High safety integration
    • Adjustable input overvoltage and undervoltage protection
    • Battery overvoltage and overcurrent protection
    • Charging safety timer
    • Battery short protection
    • Thermal shutdown
  • Status outputs
    • Adapter present status ( PG)
    • Charger operation status
  • Package
    • 36-pin 5 mm × 6 mm QFN
  • Wide input voltage operating range: 4.2 V to 70 V
  • Wide battery voltage operating range: up-to 70 V with multi-chemistry support:
    • 1- to 14-cell Li-ion charge profile
    • 1- to 16-cell LiFePO 4 charge profile
  • Synchronous buck-boost charge controller with NFET drivers
    • Adjustable switching frequency from 200 kHz to 600 kHz
    • Optional synchronization to external clock
    • Integrated loop compensation with soft start
    • Optional gate driver supply input for optimized efficiency
  • Bidirectional converter operation (Reverse Mode) supporting USB-PD Extended Power Range (EPR)
    • Adjustable input voltage (VAC) regulation from 3.3 V to 65 V with 20-mV/step
    • Adjustable input current regulation (R AC_SNS) from 400 mA to 20 A with 50-mA/step using 5-mΩ resistor
  • Direct power path management for highest efficiency to power system
    • System power selection from adapter or battery
    • Dynamic power management
    • All N-channel FET drivers
  • High accuracy
    • ±0.5% charge voltage regulation
    • ±3% charge current regulation
    • ±3% input current regulation
  • I 2C controlled for optimal system performance with resistor-programmable option
    • Hardware adjustable input and output current limits
  • Integrated 16-bit ADC for voltage, current, and temperature monitoring
  • Low battery quiescent current
  • High safety integration
    • Adjustable input overvoltage and undervoltage protection
    • Battery overvoltage and overcurrent protection
    • Charging safety timer
    • Battery short protection
    • Thermal shutdown
  • Status outputs
    • Adapter present status ( PG)
    • Charger operation status
  • Package
    • 36-pin 5 mm × 6 mm QFN

The BQ25750 is a wide input voltage, switched-mode buck-boost Li-Ion, Li-polymer, or LiFePO 4 battery charge controller with direct power path control. The device offers high-efficiency battery charging over a wide voltage range with accurate charge current and charge voltage regulation, in addition to automatic charge preconditioning, termination, and charge status indication. The device integrates all the loop compensation for the buck-boost converter, thereby providing a high density solution with ease of use. In reverse mode, the device draws power from the battery and regulates the SYS terminal voltage.

Besides the I 2C host-controlled charging mode, the device also supports standalone charging mode via resistor programmable limits. Input current, charge current and charge voltage regulation targets can be set via the ILIM_HIZ, ICHG and FB pins, respectively.

The device has three status pins (STAT1, STAT2, and PG) to indicate the charging status and input voltage status. These pins can be used to drive LEDs or communicate with a host processor. If needed, these pins can also be used as general purpose indicators and their status controlled directly by the I2C interface. The INT pin immediately notifies host when the device status changes, including faults.

The device also provides an analog-to-digital converter (ADC) for monitoring input current, charge current and input/battery/system/thermistor voltages.

The device comes with a 36-pin 5.0 mm × 6.0 mm QFN package with 0.5 mm pin pitch.

The BQ25750 is a wide input voltage, switched-mode buck-boost Li-Ion, Li-polymer, or LiFePO 4 battery charge controller with direct power path control. The device offers high-efficiency battery charging over a wide voltage range with accurate charge current and charge voltage regulation, in addition to automatic charge preconditioning, termination, and charge status indication. The device integrates all the loop compensation for the buck-boost converter, thereby providing a high density solution with ease of use. In reverse mode, the device draws power from the battery and regulates the SYS terminal voltage.

Besides the I 2C host-controlled charging mode, the device also supports standalone charging mode via resistor programmable limits. Input current, charge current and charge voltage regulation targets can be set via the ILIM_HIZ, ICHG and FB pins, respectively.

The device has three status pins (STAT1, STAT2, and PG) to indicate the charging status and input voltage status. These pins can be used to drive LEDs or communicate with a host processor. If needed, these pins can also be used as general purpose indicators and their status controlled directly by the I2C interface. The INT pin immediately notifies host when the device status changes, including faults.

The device also provides an analog-to-digital converter (ADC) for monitoring input current, charge current and input/battery/system/thermistor voltages.

The device comes with a 36-pin 5.0 mm × 6.0 mm QFN package with 0.5 mm pin pitch.
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類型 標題 日期
* Data sheet BQ25750: Standalone/I2C Controlled, 1- to 14-Cell Bidirectional Buck-Boost Battery Charge Controller with Direct Power Path Control datasheet PDF | HTML 2023年 12月 5日
Application note How to Charge With Smart Battery Using MCU in Between to Translate SMBus/I2C PDF | HTML 2024年 8月 9日
EVM User's guide BQ25750 Evaluation Module (Rev. A) PDF | HTML 2023年 11月 30日
Certificate BQ25750EVM EU Declaration of Conformity (DoC) 2023年 10月 31日

設計與開發

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開發板

BQ25750EVM — 適用獨立式或 I²C 控制之 70-V 雙向降壓升壓控制器的 BQ25750 評估模組

BQ25750EVM 評估模組 (EVM) 是適用於 BQ25750 IC 的完整評估系統，BQ25750 IC 是具有直接電源路徑控制的降壓升壓電池充電控制器。BQ25750 具備 4.2 V – 70 V 的寬輸入範圍、高達 70 V 的寬輸出電壓範圍，以及雙向功能。BQ25750EVM 的最大輸入與輸出為 55V，最大充電電流為 10A。

使用指南: PDF | HTML
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應用軟體及架構

TI-CHARGER-GUI — 適於與 USB2ANY 和電池充電搭配使用的 GUI 軟體評估模組

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