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電池管理 IC
電池充電器 IC

BQ25798

現行

具雙輸入選擇器和 MPPT 的 I²C 控制、1-4 芯、5-A 升壓降壓太陽能電池充電器

立即訂購
產品規格表

BQ25798

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 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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類型 標題 日期
* 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 2023年 1月 13日
Technical article USB Type-C® and USB Power Delivery: Designing for both Extended Power Range and battery-powered systems PDF | HTML 2024年 9月 24日
Design guide Integrated USB Type-C PD and Charging Reference Design for 2-4 Cell Batteries (Rev. B) PDF | HTML 2024年 4月 11日
Application note Finding the Correct Battery Charging Design to Power Vacuum Robot System PDF | HTML 2024年 3月 4日
Application note Increasing NVCD Battery Chargers' Discharge Current PDF | HTML 2024年 1月 10日
Application note LiFePO4 Design Considerations PDF | HTML 2023年 7月 26日
Application note Choosing the Correct Solar Battery Charger for Your Solar Application PDF | HTML 2023年 6月 22日
Application note How to Quickly and Safely Charge Supercapacitors PDF | HTML 2023年 3月 27日
User guide BQ25792EVM, BQ25798EVM and BQ25798BKUPEVM (BMS034) Evaluation Module (Rev. E) PDF | HTML 2022年 7月 12日
White paper Combining Buck-Boost Battery Chargers and USB Type-C Power Delivery for Maximum (Rev. A) PDF | HTML 2022年 5月 19日
Application note Implementing a Simple Maximum Power Point Tracking (MPPT) Algorithm PDF | HTML 2021年 12月 16日
Application note State of Charge Estimation Using Smart Battery Charger PDF | HTML 2021年 10月 11日
Technical article How to choose the right battery-charger IC for ultrasound point-of-care products PDF | HTML 2021年 3月 24日
Technical article Maximize power density with buck-boost charging and USB Type C™ Power Delivery PDF | HTML 2020年 6月 29日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

BQ25798BKUPEVM — BQ25798 評估模組，採用 QFN 封裝的 I²C 控制 5-A、1 至 4 芯降壓-升壓充電器

BQ25798BKUPEVM 評估模組 (EVM) 用於評估備份模式應用中的 BQ25798 裝置。BQ25798 是採用 HOTROD (QFN) 封裝的整合式切換模式降壓-升壓電池充電管理裝置，適用於 3.6-V 至 24-V 輸入的 1 至 4 串聯電池芯鋰離子和鋰聚合物電池，並具備可編程的 750-KHz 及 1500-KHz 切換頻率。具有充電和系統設定功能的 I2C 序列介面使此裝置成為真正靈活的解決方案。
使用指南: PDF | HTML
TI.com 無法提供
開發板

BQ25798EVM — BQ25798 評估模組 I²C 控制、1 至 4 芯、5-A 降壓-壓充電器、雙輸入和 MPPT

BQ25798EVM 評估模組 (EVM) 可用於評估 BQ25798 裝置。BQ25798 是採用 HOTROD (QFN) 封裝的整合式切換模式降壓升壓電池充電管理裝置，適用具備可編程 750-KHz 和 1500-KHz 切換頻率的 3.6-V 至 24-V 輸入 1 至 4 串聯電池芯鋰離子與鋰聚合物電池。具有充電和系統設定功能的 I2C 序列介面使此裝置成為真正靈活的解決方案。BQ25798 具有最大功率點追蹤 (MPPT) 功能，可搭配太陽能板等 HiZ 電源使用。
使用指南: PDF | HTML
TI.com 無法提供
開發板

USB-PD-CHG-EVM-01 — 整合式 USB Type-C® 電力傳輸 (PD) 和 2-4 芯電池 EVM 的充電參考設計

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 (...)

使用指南: PDF | HTML
TI.com 無法提供
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

TI-CHARGER-GUI 提供網路型或獨立式圖形使用者介面，協助評估、設計、配置或測試電池充電器產品。該軟體提供暫存器的完整存取權，以及用於傳送及排序指令的簡易介面。
在雲端評估
參考設計

TIDA-050047 — 整合式 USB Type-C® 電力傳輸 (PD) 和 2-4 芯電池的充電參考設計

此參考設計可在 5 A 電流下充電至 20 V，無需任何外部 FET，進而大幅縮小解決方案尺寸，並降低總 BOM 成本。此外也不需要微處理器，因為 TPS25750 電力傳輸 (PD) 控制器會處理與 BQ25798 電池充電器 IC 的 I2C 通訊。此 I2C 功能與 TPS25750 Web 架構 GUI 可大幅簡化韌體開發程序。
Design guide: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
VQFN-HR (RQM) 29 Ultra Librarian
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