BQ25756E
Stand-alone or I²C-controlled bidirectional buck-boost charge controller for up to 7S batteries
BQ25756E
- 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.
기술 자료
유형 | 직함 | 날짜 | ||
---|---|---|---|---|
* | Data sheet | BQ25756E: Standalone/I2C Controlled, 1- to 7-Cell Bidirectional Buck-Boost Battery Charge Controller datasheet | PDF | HTML | 2023/11/28 |
EVM User's guide | BQ25756E Evaluation Module User's Guide | PDF | HTML | 2023/11/17 | |
Certificate | BQ25756EEVM EU Declaration of Conformity (DoC) | 2023/10/31 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
BQ25756EEVM — 독립형 또는 I²C 제어 양방향 벅-부스트 컨트롤러용 BQ25756E 평가 모듈
TI-CHARGER-GUI — USB2ANY 및 배터리 충전 평가 모듈과 함께 사용하기 위한 GUI 소프트웨어
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.