BQ25856-Q1
- AEC-Q100 qualified for automotive applications
- Temperature grade 1: −40ºC ≤ TA≤ 150ºC
- Wide input voltage operating range: 4.2V 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 over- and under-voltage 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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技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | BQ25856-Q1: Automotive, Standalone/I2C Controlled, 1- to 14-Cell Bidirectional Buck-Boost Battery Charge Controller datasheet | PDF | HTML | 2024年 5月 8日 |
設計與開發
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BQ25856EVM — BQ25856 評估模組
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
VQFN (RRV) | 36 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。