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電池充電器 IC

BQ25700A

現行

具有系統電源監控器和處理器的 SMBus 1-4 芯 NVDC 降壓-升壓電池充電控制器

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BQ25710 現行 具有系統電源監測器和處理器熱量監測器的 SMBus 1 至 4 節降壓/升壓電池充電控制器 This product supports USB PD 3.0 PPS specification

BQ25700A

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Number of series cells 1, 2, 3, 4 Cell chemistry Lead Acid, Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4, NiCd, NiMH, SuperCap Charge current (max) (A) 8.128 Features IC thermal regulation, ICO (Input Current Optimization), IINDPM (Input current limit), Input OVP, Integrated ADC, Power Path, USB C/PD compatible, USB OTG integrated, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 3.5 Vin (max) (V) 24 Absolute max Vin (max) (V) 30 Control topology Switch-Mode Buck-boost Battery charge voltage (min) (V) 1.024 Battery charge voltage (max) (V) 19.2 Control interface SMBus Operating temperature range (°C) -40 to 85
Rating Catalog Number of series cells 1, 2, 3, 4 Cell chemistry Lead Acid, Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4, NiCd, NiMH, SuperCap Charge current (max) (A) 8.128 Features IC thermal regulation, ICO (Input Current Optimization), IINDPM (Input current limit), Input OVP, Integrated ADC, Power Path, USB C/PD compatible, USB OTG integrated, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 3.5 Vin (max) (V) 24 Absolute max Vin (max) (V) 30 Control topology Switch-Mode Buck-boost Battery charge voltage (min) (V) 1.024 Battery charge voltage (max) (V) 19.2 Control interface SMBus Operating temperature range (°C) -40 to 85
WQFN (RSN) 32 16 mm² (4 mm × 4 mm)
  • Charge 1- to 4-Cell Battery From Wide Range of Input Sources
    • 3.5-V to 24-V Input Operating Voltage
    • Supports USB2.0, USB 3.0, USB 3.1 (Type C), and USB_PD Input Current Settings
    • Seamless Transition Between Buck and Boost Operation
    • Input Current and Voltage Regulation (IDPM and VDPM) Against Source Overload
  • Power/Current Monitor for CPU Throttling
    • Comprehensive PROCHOT Profile, IMVP8 Compliant
    • Input and Battery Current Monitor
    • System Power Monitor, IMVP8 Compliant
  • Narrow-VDC (NVDC) Power Path Management
    • Instant-On With No Battery or Deeply Discharged Battery
    • Battery Supplements System When Adapter is Fully-Loaded
  • Power Up USB Port From Battery (USB OTG)
    • Output 4.48-V to 20.8-V Compatible With USB PD
    • Output Current Limit up to 6.35 A
  • 800-kHz or 1.2-MHz Programmable Switching Frequency for 1-µH to 3.3-µH Inductor
  • Host Control Interface for Flexible System Configuration
    • SMBus (bq25700A) Port for Optimal System Performance and Status Reporting
    • Hardware Pin to Set Input Current Limit Without EC Control
  • Integrated ADC to Monitor Voltage, Current and Power
  • High Accuracy Regulation and Monitor
    • ±0.5% Charge Voltage Regulation
    • ±2% Input/Charge Current Regulation
    • ±2% Input/Charge Current Monitor
    • ±5% Power Monitor
  • Safety
    • Thermal Shutdown
    • Input, System, Battery Overvoltage Protection
    • MOSFET Inductor Overcurrent Protection
  • Low Battery Quiescent Current
  • Input Current Optimizer (ICO) to Extract Max Input Power
  • Charge Any Battery Chemistry: Li+, LiFePO4, NiCd, NiMH, Lead Acid
  • Package: 32-Pin 4 × 4 WQFN
  • Charge 1- to 4-Cell Battery From Wide Range of Input Sources
    • 3.5-V to 24-V Input Operating Voltage
    • Supports USB2.0, USB 3.0, USB 3.1 (Type C), and USB_PD Input Current Settings
    • Seamless Transition Between Buck and Boost Operation
    • Input Current and Voltage Regulation (IDPM and VDPM) Against Source Overload
  • Power/Current Monitor for CPU Throttling
    • Comprehensive PROCHOT Profile, IMVP8 Compliant
    • Input and Battery Current Monitor
    • System Power Monitor, IMVP8 Compliant
  • Narrow-VDC (NVDC) Power Path Management
    • Instant-On With No Battery or Deeply Discharged Battery
    • Battery Supplements System When Adapter is Fully-Loaded
  • Power Up USB Port From Battery (USB OTG)
    • Output 4.48-V to 20.8-V Compatible With USB PD
    • Output Current Limit up to 6.35 A
  • 800-kHz or 1.2-MHz Programmable Switching Frequency for 1-µH to 3.3-µH Inductor
  • Host Control Interface for Flexible System Configuration
    • SMBus (bq25700A) Port for Optimal System Performance and Status Reporting
    • Hardware Pin to Set Input Current Limit Without EC Control
  • Integrated ADC to Monitor Voltage, Current and Power
  • High Accuracy Regulation and Monitor
    • ±0.5% Charge Voltage Regulation
    • ±2% Input/Charge Current Regulation
    • ±2% Input/Charge Current Monitor
    • ±5% Power Monitor
  • Safety
    • Thermal Shutdown
    • Input, System, Battery Overvoltage Protection
    • MOSFET Inductor Overcurrent Protection
  • Low Battery Quiescent Current
  • Input Current Optimizer (ICO) to Extract Max Input Power
  • Charge Any Battery Chemistry: Li+, LiFePO4, NiCd, NiMH, Lead Acid
  • Package: 32-Pin 4 × 4 WQFN

The bq25700A is a synchronous NVDC battery buck-boost charge controller, offering low component count, high efficiency solution for space-constraint, multi-chemistry battery charging applications.

The NVDC-1 configuration allows the system to be regulated at battery voltage, but not drop below system minimum voltage. The system keeps operating even when the battery is completely discharged or removed. When load power exceeds input source rating, the battery goes into supplement mode and prevents the system from crashing.

The bq25700A charges battery from a wide range of input sources including USB adapter, high voltage USB PD sources and traditional adapters.

During power up, the charger sets converter to buck, boost or buck-boost configuration based on input source and battery conditions. The charger automatically transits among buck, boost and buck-boost configuration without host control.

In the absence of an input source, the bq25700A supports On-the-Go (OTG) function from 1- to 4-cell battery to generate 4.48 V to 20.8 V on VBUS. During OTG mode, the charger regulates output voltage and output current.

The bq25700A monitors adapter current, battery current and system power. The flexibly programmed PROCHOT output goes directly to CPU for throttle back when needed.

The bq25700A is a synchronous NVDC battery buck-boost charge controller, offering low component count, high efficiency solution for space-constraint, multi-chemistry battery charging applications.

The NVDC-1 configuration allows the system to be regulated at battery voltage, but not drop below system minimum voltage. The system keeps operating even when the battery is completely discharged or removed. When load power exceeds input source rating, the battery goes into supplement mode and prevents the system from crashing.

The bq25700A charges battery from a wide range of input sources including USB adapter, high voltage USB PD sources and traditional adapters.

During power up, the charger sets converter to buck, boost or buck-boost configuration based on input source and battery conditions. The charger automatically transits among buck, boost and buck-boost configuration without host control.

In the absence of an input source, the bq25700A supports On-the-Go (OTG) function from 1- to 4-cell battery to generate 4.48 V to 20.8 V on VBUS. During OTG mode, the charger regulates output voltage and output current.

The bq25700A monitors adapter current, battery current and system power. The flexibly programmed PROCHOT output goes directly to CPU for throttle back when needed.
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 bq25700A SMBus Multi-Chemistry Battery Buck-Boost Charge Controller With System Power Monitor and Processor Hot Monitor datasheet (Rev. A) PDF | HTML 2018/5/31
應用說明 Layout Guide for Buck-Boost Charger BQ257XX Series PDF | HTML 2024/1/30
應用說明 Autonomous Smart Battery Guide PDF | HTML 2021/10/15
技術文章 Transform the way you charge your devices with USB Type-C and PD PDF | HTML 2017/7/18
應用說明 Layout Guidelines for the bq2570x Switching Charger 2017/5/19

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

BQ25700AEVM-732 — bq25700A SMBus NVDC 降壓/升壓充電器評估模組

bq25700A 評估模組 (EVM) 是具有 N 通道 MOSFET 選擇器和電流監控功能的 SMBus 控制 NVDC（窄電壓 DC）降壓升壓充電控制器。降壓轉換器的輸入電壓範圍介於 3.5V 和 24 V 之間，具有 1–4 個電池芯的可編程輸出，以及 128mA 至 8.128A 的充電輸出電流範圍。此 EVM 不包含 EV2400 介面裝置；必須單獨訂購才能評估 bq25700A EVM。
使用指南: PDF | HTML
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應用軟體及架構

BQSTUDIO — Battery Management Studio (bqStudio) 軟體

Battery Management Studio (bqStudio) 提供全套的強固工具，可協助評估、設計、配置、測試或使用 TI 電池管理產品的程序。其中包括可提供暫存器及資料記憶體完整存取的功能，包括支援即時觀看、繪圖和記錄、傳送命令的簡易介面、直接低階通訊和 I/O，以及用於配置、校準和執行學習週期的自動化和引導支援，進而產生實用的檔案，以利裝置投入生產。

在 bqStudio 中也支援舊產品，如 bq20xxx 和 bq30xxx。從適當的產品頁面下載特定的評估軟體。此外，您為 bqStudio 下載的最新化學更新程式需要 bqStudio 的更新版。

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參考設計

PMP40069 — 具有 5-20V 輸入電壓 3 節電池充電器的可攜式 DLP 微型投影機參考設計

PMP40069 為一適用於可攜式 DLP pico 投影機的參考設計，同時具備 3 串電池充電器。  當變壓器不可用時，電池將為投影機供電。該解決方案採用 DLPA3000 PMIC/LED 驅動器、DLPC3438 顯示控制器及 SMBus 電池降壓升壓充電控制器 BQ25700A。DLPA3000 PMIC 是完全整合的專用 PMIC/LED 驅動器，可提供所有系統類比電源需求，並可驅動 0 至 6 安的 RGB LED。降壓升壓充電器相容於 5V/9V/12V/15V/20V 輸出變壓器。充電器具備高效率，可為 3 串電池提供 3A 充電電流。
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參考設計

PMP40312 — 車用雙 USB Type-C ™ PD DFP 5/9/12/15V 輸出汽車充電器參考設計

PMP40312 為雙埠 USB Type-C™ PD 車用充電器參考設計。設計的一般輸入電壓範圍為 9V 至 14.5V，最大輸入電壓可達 42V。USB Type-C 電源控制器 TPS25740B 的純類比配置讓 PD 協商更簡便。該解決方案支援 4 組輸出電壓選項，包括 5V/9V/12V/15V。每個連接埠皆可為 USB Type-C 裝置提供最大 32.5W 的輸出功率。此解決方案可實現高效率，因為在設計中實作 SMBus 電池降壓升壓充電控制器 BQ25700A 和 I2C 電池降壓升壓充電控制器 BQ25703A。
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