BQ25858B-Q1
- AEC-Q100 qualified for automotive applications
- Temperature grade 1: −40ºC ≤ TA≤ 150ºC
- Wide input voltage operating range: 4.4V to 70V with 20mV/step
- Synchronous buck-boost DC/DC 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
- Selectable PFM operation for light load efficiency improvement (PFM or forced PWM option)
- Optional gate driver supply input for optimized efficiency
- Support USB-PD Extended Power Range (EPR) in forward and reverse power direction
- Adjustable output voltage regulation from 3.3V to 60V with 20mV/step
- Adjustable input and output current regulation (RAC_SNS, ROUT_SNS) from 400mA to 20A with 50mA/step using 5mΩ resistor
- Bypass mode for highest efficiency with VOUT = VAC
- Buck-only mode
- High accuracy
- ±2% output voltage regulation
- ±3% output/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
- Output overvoltage and overcurrent protection
- Thermal shutdown
- Status outputs
- Input power present status (PG)
- Switcher operation status (STAT)
- Package
- 36-pin 5mm × 6mm QFN with wettable flanks
BQ25858-Q1, BQ25858B-Q1 are automotive grade, wide input voltage, bidirectional switched-mode buck-boost controllers. The devices offer high-efficiency regulation over a wide voltage range with output CC-CV control. The devices integrate all the loop compensation for the buck-boost converter, thereby providing a high density solution with ease of use. In reverse mode, the devices draw power from the output supply and regulate the input terminal voltage with an added constant current loop for protection.
Besides the I2C host-controlled mode, the device also supports programmable hardware limits. Input current, and output current regulation targets can be set with single resistor on the IIN, and IOUT pins, respectively. By default, the device is programmed to provide 5V output, and the target output voltage can be adjusted via the VOUT_REG register bits.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | BQ25858-Q1/858B-Q1: Automotive, I2C Controlled, Bidirectional Buck-Boost Controllers with Wide Voltage Range datasheet (Rev. A) | PDF | HTML | 2025年 7月 10日 |
設計與開發
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BQ25858BEVM — BQ25858B-Q1 評估模組
BQ25858 與 BQ25858B 評估模組 (EVM) 是適用於 BQ25858-Q1 以及 BQ25858B-Q1 IC 的完整評估系統。EVM 的最大輸入與輸出為 55V，最大輸出電流為 10A。
BQ25858-Q1 與 BQ25858B-Q1 IC 是寬電壓、雙向切換模式降壓升壓控制器。這些裝置透過輸出 CC-CV 控制，在寬電壓範圍內提供高效率電源轉換。這些裝置的寬輸入範圍從 4.2V 至 60V，寬輸出範圍最高可達 60V。
BQ25858EVM 和 BQ25858BEVM 使用相同的硬體。兩個電路板間唯一的差異是 I2C 位址。BQ25858-Q1 的 I2C 位址為 (...)
BQ25858EVM — 適用於汽車和 I2C 控制、70V 雙向降壓升壓轉換器的評估模組
BQ25858 評估模組 (EVM) 是適用於 BQ25858-Q1 IC 的完整評估系統。BQ25858EVM 的最大輸入與輸出為 55V，最大輸出電流為 10A。
BQ25858-Q1 IC 是一款寬電壓、雙向切換模式降壓升壓控制器。此裝置透過輸出 CC-CV 控制，在寬電壓範圍內提供高效率電源轉換。此 IC 的寬輸入範圍從 4.2V 至 60V，寬輸出範圍最高可達 60V。
| 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。