제품 상세 정보

Absolute max Vin (max) (V) 85 Charge current (max) (A) 20 Control topology Switch-Mode Buck, Switch-Mode Buck-boost Rating Automotive 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 Control interface I2C Operating temperature range (°C) -40 to 150
Absolute max Vin (max) (V) 85 Charge current (max) (A) 20 Control topology Switch-Mode Buck, Switch-Mode Buck-boost Rating Automotive 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 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 65V 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 65V 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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기술 자료

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3개 모두 보기
유형 직함 날짜
* Data sheet BQ25858-Q1/858B-Q1: Automotive, I2C Controlled, Bidirectional Buck-Boost Controllers with Wide Voltage Range datasheet PDF | HTML 2025/03/31
EVM User's guide BQ25858-Q1EVM BQ25858B-Q1EVM Evaluation Module User's Guide (Rev. A) PDF | HTML 2025/04/30
Certificate BQ25858EVM EU Declaration of Conformity (DoC) 2025/02/07

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

평가 보드

BQ25858EVM — 차량용 및 I2C 제어, 70V 양방향 벅-부스트 컨버터용 평가 모듈

BQ25858 EVM(평가 모듈)은 BQ25858-Q1을 위한 완전한 평가 시스템입니다. BQ25858EVM은 최대 입력 및 출력이 55V이며 최대 출력 전류는 10A입니다.

BQ25858-Q1 IC는 넓은 전압, 양방향 스위치 모드 벅 부스트 컨트롤러입니다. 이 장치는 출력 CC-CV 제어와 함께 넓은 전압 범위에서 고효율 전력 변환을 제공합니다. 이 IC는 4.2V~60V의 넓은 입력 범위와 최대 60V의 넓은 출력 범위를 갖추고 있습니다.

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주문 및 품질

포함된 정보:
  • RoHS
  • REACH
  • 디바이스 마킹
  • 납 마감/볼 재질
  • MSL 등급/피크 리플로우
  • MTBF/FIT 예측
  • 물질 성분
  • 인증 요약
  • 지속적인 신뢰성 모니터링
포함된 정보:
  • 팹 위치
  • 조립 위치

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