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電池充電器 IC

BQ25820

現行

具有電源路徑的獨立式或 I²C 控制 70V 雙向降壓充電控制器

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產品規格表

BQ25820

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, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4, NiMH, SuperCap Charge current (max) (A) 20 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 Vin (max) (V) 70 Absolute max Vin (max) (V) 85 Control topology Switch-Mode Buck Battery charge voltage (min) (V) 0 Battery charge voltage (max) (V) 70 Control interface I2C Operating temperature range (°C) -40 to 125
Rating Catalog Number of series cells 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4, NiMH, SuperCap Charge current (max) (A) 20 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 Vin (max) (V) 70 Absolute max Vin (max) (V) 85 Control topology Switch-Mode Buck Battery charge voltage (min) (V) 0 Battery charge voltage (max) (V) 70 Control interface I2C Operating temperature range (°C) -40 to 125
VQFN (RRV) 36 30 mm² 6 x 5
  • Wide input voltage operating range: 4.4V to 70V
  • Synchronous buck charge controller with NFET drivers
    • Adjustable switching frequency from 200kHz to 600kHz
    • 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 3.3V to 65V with 20mV/step
    • Adjustable input current regulation (RAC_SNS) from 400mA to 20A with 50mA/step using 2mΩ 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
  • I2C 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
    • Overvoltage and overcurrent protection
    • Thermal shutdown
  • Status outputs
    • Adapter present status (PG)
    • Operation status
  • Package
    • 36-pin 6mm × 5mm QFN
  • Wide input voltage operating range: 4.4V to 70V
  • Synchronous buck charge controller with NFET drivers
    • Adjustable switching frequency from 200kHz to 600kHz
    • 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 3.3V to 65V with 20mV/step
    • Adjustable input current regulation (RAC_SNS) from 400mA to 20A with 50mA/step using 2mΩ 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
  • I2C 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
    • Overvoltage and overcurrent protection
    • Thermal shutdown
  • Status outputs
    • Adapter present status (PG)
    • Operation status
  • Package
    • 36-pin 6mm × 5mm QFN

The BQ25820 is a wide input voltage, switched-mode buck Li-Ion, Li-polymer, or LiFePO4 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 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.

The BQ25820 is a wide input voltage, switched-mode buck Li-Ion, Li-polymer, or LiFePO4 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 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.
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類型 標題 日期
* Data sheet BQ25820: Standalone/I2C Controlled, 1- to 14-Cell Bidirectional Buck Battery Charge Controller with Direct Power Path Control datasheet (Rev. A) PDF | HTML 2025年 5月 27日
Application note How To Implement External P&O Feature On BQ2575X PDF | HTML 2025年 5月 16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

BQ25820EVM — BQ25820 評估模組

BQ25820EVM 評估模組 (EVM) 是適用於 BQ25820 IC 的評估系統。BQ25820 IC 是一款具有直接電源路徑控制功能的降壓電池充電控制器。BQ25820 具有 4.2V 至 70V 的廣泛輸入範圍、最高 70V 的廣泛輸出電壓範圍，以及雙向功能。BQ25820EVM 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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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 功能之獨立式或 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 — 獨立或 I²C 控制的雙向降壓升壓充電控制器，最多可支援 7S 電池 BQ25856-Q1 — 車用 I2C 控制 70-V 雙向降壓升壓充電控制器 BQ25758A — 具有 USB PD EPR 和 PPS 支援的 I²C 控制 60V 雙向降壓升壓控制器 BQ25750 — 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 BQ25858-Q1 — 車用獨立式或 I²C 控制的 65V 雙向降壓升壓控制器 BQ25858B-Q1 — 車用獨立式或 I²C 控制的 65V 雙向降壓升壓控制器 BQ25751 — 具有電源路徑的獨立式或 I²C 控制、70V、降壓升壓、鉛酸電池充電控制器 BQ25820 — 具有電源路徑的獨立式或 I²C 控制 70V 雙向降壓充電控制器 BQ25758S — 具有 USB PD EPR 和 PPS 支援的 I²C 控制 32V 雙向降壓升壓控制器 BQ25822 — 具電源路徑與自動備援模式的 70V 雙向降壓式充電控制器
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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