BQ25672
- High power density, high integration buck charger for 1-4 cell batteries
- Integrates switching MOSFETs, BATFET
- Integrates input and charging current sensing
- Highly efficient
- 750-kHz or 1.5-MHz switching frequencies
- 3-A charging current with 10-mA resolution
- 96.5% efficient: 16-V battery at 3A from 20V
- Supports a wide range of input sources
- Autonomously sampled open circuit voltage (V OC) maximum power point tracking (MPPT) for charging from a photovoltaic panel
- 3.6-V to 24-V wide input operating voltage range with 30-V absolute maximum rating
- Maximum power tracking with input voltage dynamic power management (VINDPM) up to 22 V and input current dynamic power management (IINDPM) up to 3.3 A
- Detects USB BC1.2, HVDCP and non-standard adapters
- Dual-input power mux controller (optional) for source selection
- Narrow voltage DC (NVDC) power path
- Powers USB port from battery (USB OTG)
- 5-V to 12-V OTG buck-boost output voltage with 10-mV resolution
- OTG output current regulation up to 2 A with 40-mA resolution
- Flexible autonomous and I 2C mode for optimal system performance
- Integrated 16-bit ADC for voltage, current, and temperature monitoring
- Low battery quiescent current
- 17 µA for battery only operation
- 500 nA in Charger Shutdown Mode
- High accuracy
- -0.25% to +0.65% charge voltage regulation for 2S batteries
- ±5% charge current regulation
- ±5% input current regulation
- Safety
- Thermal regulation and thermal shutdown
- Input/battery OVP and OCP
- Converter MOSFETs OCP
- Charging safety timer
- Package
- 29-Pin 4 mm × 4 mm QFN
The BQ25672 is a fully integrated switch-mode buck charger for 1-4 cell Li-ion batteries and Li-polymer batteries. The BQ25672 is also capable of producing a buck-boost, 5 V to 12 V, output voltage on VBUS when operating in OTG Mode. The integration includes the switching MOSFETs, input and charging current sensing circuits, the battery FET and all the loop compensation of the converter. It uses NVDC power path management, regulating the system not dropping below a configurable minimum system voltage. When system power exceeds the input source rating, battery supplement mode supports the system without overloading the input source. also maximizes power from photovoltaic panels using its built-in V OC scaling MPPT algorithm.
기술 자료
유형 | 직함 | 날짜 | ||
---|---|---|---|---|
* | Data sheet | BQ25672 I2C Controlled, 1- to 4-Cell, 3-A Buck Battery Charger with Dual-Input Selector, MPPT for Solar Panels and Integrated ADC datasheet (Rev. B) | PDF | HTML | 2023/07/26 |
Application note | Increasing NVCD Battery Chargers' Discharge Current | PDF | HTML | 2024/01/10 | |
Application note | State of Charge Estimation Using Smart Battery Charger | PDF | HTML | 2021/10/11 | |
User guide | BQ25672 Evaluation Module (Rev. A) | PDF | HTML | 2021/10/01 | |
Certificate | BQ25672EVM EU RoHS Declaration of Conformity (DoC) | 2020/12/28 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
BQ25672EVM — 듀얼 입력 및 MPPT를 지원하는 I²C 제어, 1~4셀, 3A 벅 충전기용 BQ25672 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-HR (RQM) | 29 | 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.