BQ25856-Q1
- AEC-Q100 qualified for automotive applications
- Temperature grade 1: −40ºC ≤ TA≤ 150ºC
- Wide input voltage operating range: 4.4V to 70V
- Wide battery voltage operating range: up-to 70V with multi-chemistry support:
- 1- to 14-cell Li-ion charge profile
- 1- to 16-cell LiFePO4 charge profile
- Up-to 70V supercapacitor charging
- Synchronous buck-boost charge 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
- 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 0.4A to 20A with 50mA/step using 5mΩ resistor
- High accuracy
- ±0.5% charge voltage regulation
- ±3% charge/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
- Battery overvoltage and overcurrent protection
- Charging safety timer
- Thermal shutdown
- Status outputs
- Input power present status (PG)
- Charger operation status (STAT1, STAT2)
- Package
- 36-pin 5mm × 6mm QFN with wettable flanks
- Functional Safety-Capable
The BQ25856-Q1 is an automotive grade, wide input voltage, switched-mode buck-boost Li-Ion, Li-polymer, or LiFePO4 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 loop for protection.
Besides the I2C 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.
추가 정보 요청
NDA 조건으로 고장 모드, 영향 및 진단 분석(FMEDA), 안전 분석 보고서 및 안전 매뉴얼과 같은 기능 안전 정보를 사용할 수 있습니다. 지금 요청
기술 자료
유형 | 직함 | 날짜 | ||
---|---|---|---|---|
* | Data sheet | BQ25856-Q1: Automotive, Standalone/I2C Controlled, 1- to 14-Cell Bidirectional Buck-Boost Battery Charge Controller datasheet (Rev. A) | PDF | HTML | 2024/10/31 |
Application brief | Designing a fast charging and discharging supercapacitor backup system for automotive applications | PDF | HTML | 2024/11/21 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
BQ25856EVM — BQ25856 평가 모듈
패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
---|---|---|
VQFN (RRV) | 36 | Ultra Librarian |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.