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BQ25756E

現行

Stand-alone or I²C-controlled bidirectional buck-boost charge controller for up to 7S batteries

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產品規格表

BQ25756E

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 Charge current (max) (A) 20 Vin (max) (V) 36 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4, NiMH, SuperCap Battery charge voltage (min) (V) 0 Battery charge voltage (max) (V) 36 Absolute max Vin (max) (V) 60 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, SYNC Pin, Solar input/MPPT, USB C/PD compatible, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 0 Rating Catalog Operating temperature range (°C) -40 to 125
Number of series cells 1, 2, 3, 4, 5, 6, 7 Charge current (max) (A) 20 Vin (max) (V) 36 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4, NiMH, SuperCap Battery charge voltage (min) (V) 0 Battery charge voltage (max) (V) 36 Absolute max Vin (max) (V) 60 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, SYNC Pin, Solar input/MPPT, USB C/PD compatible, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 0 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 36 V
  • Wide battery voltage operating range: up-to 36 V with multi-chemistry support:
    • 1- to 7-cell Li-ion charge profile
    • 1- to 9-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
  • Automatic maximum power point tracking (MPPT) for solar charging
  • Bidirectional converter operation (Reverse Mode) supporting USB-PD Extended Power Range (EPR)
    • Adjustable input voltage (VAC) regulation from 3.3 V to 36 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
  • 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
  • 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 (STAT1, STAT2)
  • Package
    • 36-pin 5 mm × 6 mm QFN
  • Wide input voltage operating range: 4.2 V to 36 V
  • Wide battery voltage operating range: up-to 36 V with multi-chemistry support:
    • 1- to 7-cell Li-ion charge profile
    • 1- to 9-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
  • Automatic maximum power point tracking (MPPT) for solar charging
  • Bidirectional converter operation (Reverse Mode) supporting USB-PD Extended Power Range (EPR)
    • Adjustable input voltage (VAC) regulation from 3.3 V to 36 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
  • 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
  • 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 (STAT1, STAT2)
  • Package
    • 36-pin 5 mm × 6 mm QFN

The BQ25756E is a wide input voltage, switched-mode buck-boost Li-Ion, Li-polymer, or LiFePO 4 battery charge controller with bidirectional power flow support. 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 input terminal voltage with an added constant current limit for protection, supporting USB-PD EPR power profile.

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 BQ25756E is a wide input voltage, switched-mode buck-boost Li-Ion, Li-polymer, or LiFePO 4 battery charge controller with bidirectional power flow support. 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 input terminal voltage with an added constant current limit for protection, supporting USB-PD EPR power profile.

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.
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類型 標題 日期
* Data sheet BQ25756E: Standalone/I2C Controlled, 1- to 7-Cell Bidirectional Buck-Boost Battery Charge Controller datasheet PDF | HTML 2023年 11月 28日
EVM User's guide BQ25756E Evaluation Module User's Guide PDF | HTML 2023年 11月 17日
Certificate BQ25756EEVM EU Declaration of Conformity (DoC) 2023年 10月 31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

BQ25756EEVM — 適用獨立式或 I²C 控制之雙向降壓-升壓控制器的 BQ25756E 評估模組

BQ25756EEVM 評估模組 (EVM) 是適用於 BQ25756E 的完整評估系統，而 BQ25756E 是具備高達 36 V 大輸入與輸出電壓範圍的雙向充電控制器。此產品可透過輸出 CC-CV 控制，在大電壓範圍內提供高效率的電池充電。此產品整合了適用於降壓-升壓轉換器的所有迴路補償，提供易用的高密度解決方案。
使用指南: PDF | HTML
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計算工具

BQ25756-DESIGN-CALC — BQ25756 design calculator

BQ25756 design calculator is a calculation tool for BQ25756 which is a wide input voltage, switched mode buck-boost Li-Ion, Li-polymer, or LiFePO4 battery charge controller with bidirectional power flow support.
支援產品和硬體

支援產品和硬體

產品
電池充電器 IC
BQ25756 — 具有 MPPT 之獨立式或 I²C 控制的 70-V 雙向降壓升壓充電控制器 BQ25758 — 具有 USB PD EPR 和 PPS 支援的 I²C 控制 60-V 雙向降壓升壓控制器 BQ25756E — Stand-alone or I²C-controlled bidirectional buck-boost charge controller for up to 7S batteries
硬體開發
開發板
BQ25756EVM — 適用於 1 至 14 芯雙向降壓升壓電池充電控制器的 BQ25756 評估模組
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參考設計

PMP41100 — 適用 4 至 7 芯電池的 27W USB 電源傳輸僅汲極充電器參考設計

這款精巧的充電器參考設計支援 4 至 7 芯、900mA 電池充電器，適合電動工具與 USB Type-C® 連接埠輸入吸塵器等各種應用。其具備 TPS25730D 控制器，可無縫進行電源設定檔配置。透過 BQ25756E，其即可透過多用途降壓升壓操作模式達到 96% 的峰值效率。
Test report: PDF
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VQFN (RRV) 36 Ultra Librarian
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