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.
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技术文档
类型 | 标题 | 下载最新的英语版本 | 日期 | |||
---|---|---|---|---|---|---|
* | 数据表 | BQ25856-Q1: Automotive, Standalone/I2C Controlled, 1- to 14-Cell Bidirectional Buck-Boost Battery Charge Controller 数据表 (Rev. A) | PDF | HTML | 2024年 10月 31日 | ||
应用简报 | Designing a fast charging and discharging supercapacitor backup system for automotive applications | PDF | HTML | 2024年 11月 21日 |
设计和开发
如需其他信息或资源,请点击以下任一标题进入详情页面查看(如有)。
BQ25856EVM — BQ25856 评估模块
封装 | 引脚 | CAD 符号、封装和 3D 模型 |
---|---|---|
VQFN (RRV) | 36 | Ultra Librarian |
订购和质量
- RoHS
- REACH
- 器件标识
- 引脚镀层/焊球材料
- MSL 等级/回流焊峰值温度
- MTBF/时基故障估算
- 材料成分
- 鉴定摘要
- 持续可靠性监测
- 制造厂地点
- 封装厂地点
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