產品詳情

Rating Automotive Charge current (max) (A) 20 Features AEC-Q100 Automotive Qual, Adjustable switching frequency, Bidirectional, IC thermal regulation, IINDPM (Input current limit), Input OVP, Integrated ADC, Integrated LDO, SYNC Pin, USB C/PD compatible Vin (min) (V) 4.4 Vin (max) (V) 70 Absolute max Vin (max) (V) 85 Control topology Switch-Mode Buck, Switch-Mode Buck-boost Control interface I2C Operating temperature range (°C) -40 to 150
Rating Automotive Charge current (max) (A) 20 Features AEC-Q100 Automotive Qual, Adjustable switching frequency, Bidirectional, IC thermal regulation, IINDPM (Input current limit), Input OVP, Integrated ADC, Integrated LDO, SYNC Pin, USB C/PD compatible Vin (min) (V) 4.4 Vin (max) (V) 70 Absolute max Vin (max) (V) 85 Control topology Switch-Mode Buck, Switch-Mode Buck-boost Control interface I2C Operating temperature range (°C) -40 to 150
VQFN (RRV) 36 30 mm2 6 x 5
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: ?40oC ≤ TA≤ 150oC
  • Wide input voltage operating range: 4.4V to 70V with 20mV/step
  • Synchronous buck-boost DC/DC controller with NFET drivers
    • Adjustable fSW from 200kHz to 600kHz
    • Switching frequency dithering for EMI noise reduction (DRSS)
    • Optional synchronization to external clock
    • Integrated loop compensation with soft start
    • Selectable PFM operation for light load efficiency improvement (PFM or forced PWM option)
    • Optional gate driver supply input for optimized efficiency
  • Support USB-PD Extended Power Range (EPR) in forward and reverse power direction
    • Adjustable output voltage regulation from 3.3V to 60V with 20mV/step
    • Adjustable input and output current regulation (RAC_SNS, ROUT_SNS) from 400mA to 20A with 50mA/step using 5mΩ resistor
  • Bypass mode for highest efficiency with VOUT = VAC
  • Buck-only mode
  • High accuracy
    • ±2% output voltage regulation
    • ±3% output/input current regulation
    • ±2% input voltage 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
    • Output overvoltage and overcurrent protection
    • Thermal shutdown
  • Status outputs
    • Input power present status (PG)
    • Switcher operation status (STAT)
  • Package
    • 36-pin 5mm × 6mm QFN with wettable flanks
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: ?40oC ≤ TA≤ 150oC
  • Wide input voltage operating range: 4.4V to 70V with 20mV/step
  • Synchronous buck-boost DC/DC controller with NFET drivers
    • Adjustable fSW from 200kHz to 600kHz
    • Switching frequency dithering for EMI noise reduction (DRSS)
    • Optional synchronization to external clock
    • Integrated loop compensation with soft start
    • Selectable PFM operation for light load efficiency improvement (PFM or forced PWM option)
    • Optional gate driver supply input for optimized efficiency
  • Support USB-PD Extended Power Range (EPR) in forward and reverse power direction
    • Adjustable output voltage regulation from 3.3V to 60V with 20mV/step
    • Adjustable input and output current regulation (RAC_SNS, ROUT_SNS) from 400mA to 20A with 50mA/step using 5mΩ resistor
  • Bypass mode for highest efficiency with VOUT = VAC
  • Buck-only mode
  • High accuracy
    • ±2% output voltage regulation
    • ±3% output/input current regulation
    • ±2% input voltage 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
    • Output overvoltage and overcurrent protection
    • Thermal shutdown
  • Status outputs
    • Input power present status (PG)
    • Switcher operation status (STAT)
  • Package
    • 36-pin 5mm × 6mm QFN with wettable flanks

BQ25858-Q1, BQ25858B-Q1 are automotive grade, wide input voltage, bidirectional switched-mode buck-boost controllers. The devices offer high-efficiency regulation over a wide voltage range with output CC-CV control. The devices integrate all the loop compensation for the buck-boost converter, thereby providing a high density solution with ease of use. In reverse mode, the devices draw power from the output supply and regulate the input terminal voltage with an added constant current loop for protection.

Besides the I2C host-controlled mode, the device also supports programmable hardware limits. Input current, and output current regulation targets can be set with single resistor on the IIN, and IOUT pins, respectively. By default, the device is programmed to provide 5V output, and the target output voltage can be adjusted via the VOUT_REG register bits.

BQ25858-Q1, BQ25858B-Q1 are automotive grade, wide input voltage, bidirectional switched-mode buck-boost controllers. The devices offer high-efficiency regulation over a wide voltage range with output CC-CV control. The devices integrate all the loop compensation for the buck-boost converter, thereby providing a high density solution with ease of use. In reverse mode, the devices draw power from the output supply and regulate the input terminal voltage with an added constant current loop for protection.

Besides the I2C host-controlled mode, the device also supports programmable hardware limits. Input current, and output current regulation targets can be set with single resistor on the IIN, and IOUT pins, respectively. By default, the device is programmed to provide 5V output, and the target output voltage can be adjusted via the VOUT_REG register bits.
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類型 標題 下載最新的英語版本 日期
* 數據表 BQ25858-Q1/858B-Q1: Automotive, I2C Controlled, Bidirectional Buck-Boost Controllers with Wide Voltage Range 數據表 (Rev. A) PDF | HTML 2025年 7月 10日
EVM 用戶指南 適用于 BQ25858-Q1 和 BQ25858B-Q1 的評估模塊 (Rev. A) PDF | HTML 英語版 (Rev.A) PDF | HTML 2025年 5月 19日
證書 BQ25858EVM EU Declaration of Conformity (DoC) 2025年 2月 7日

設計和開發

如需其他信息或資源，請點擊以下任一標題進入詳情頁面查看（如有）。

評估板

BQ25858EVM — 適用于汽車類和 I2C 控制型 70V 雙向降壓/升壓轉換器的評估模塊

BQ25858 評估模塊 (EVM) 是適用于 BQ25858-Q1 IC 的完整評估系統。BQ25858EVM 的最大輸入和輸出電壓為 55V，最大輸出電流為 10A。

BQ25858-Q1 IC 是一款寬電壓、雙向開關模式同步降壓/升壓控制器。該器件可通過輸出 CC-CV 控制在寬電壓范圍內實現高效的電源轉換。該 IC 具有 4.2V 至 60V 的寬輸入電壓范圍和高達 60V 的寬輸出電壓范圍。

用戶指南: PDF | HTML
英語版 (Rev.A): PDF | HTML
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VQFN (RRV) 36 Ultra Librarian

訂購和質量

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  • RoHS
  • REACH
  • 器件標識
  • 引腳鍍層/焊球材料
  • MSL 等級/回流焊峰值溫度
  • MTBF/時基故障估算
  • 材料成分
  • 鑒定摘要
  • 持續可靠性監測
包含信息：
  • 制造廠地點
  • 封裝廠地點

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