BQ25730
- Power path control through battery MOSFET implementing independent system voltage instant-on with no battery or depleted battery
- 400kHz/800kHz programmable switching frequency for high efficiency/high power density
- Buck-boost narrow voltage DC (NVDC) charger for USB-C Power Delivery (PD) interface platform
- 3.5V to 26V input range to charge 1- to 5-cell battery
- Charge current up to 16.2A/8.1A with 128mA/64mA resolution based on 5mΩ/10mΩ sensing resistor
- Input current limit up to 10A/6.35A with 100mA/50mA resolution based on 5mΩ/10mΩ sensing resistor
- Support USB 2.0, USB 3.0, USB 3.1 and USB Power Delivery (PD)
- Input Current Optimizer (ICO) to extract max input power without overloading the adapter
- Seamless transition between buck, buck-boost, and boost operations
- Input current and voltage regulation (IINDPM and VINDPM) against source overload
- TI patented switching frequency dithering pattern for EMI noise reduction
- TI patented Pass Through Mode (PTM) for system power efficiency improvement and battery fast charging achieving 99% efficiency.
- Input and battery current monitor through dedicated pins
- Integrated 8-bit ADC to monitor voltage, current and power
- Battery MOSFET ideal diode operation in supplement mode to support system when adapter is fully loaded
- Power up USB port from battery (USB OTG)
- 3V to 24V OTG with 8mV resolution
- Output current limit up to 12.7A/6.35A with 100mA/50mA resolution based on 5mΩ/10mΩ sensing resistor
- I2C host control interface for flexible system configuration
- High accuracy for the regulation and monitor
- ±0.5% Charge voltage regulation
- ±3% Charge current regulation
- ±2.5% Input current regulation
- ±2% Input/charge current monitor
- Safety
- Thermal shutdown
- Input, system, battery overvoltage protection
- Input, MOSFET, inductor overcurrent protection
- Safety-Related Certifications
- IEC 62368-1 CB Certification
- Package: 32-Pin 4.0mm × 4.0mm WQFN
The BQ25730 is a synchronous NVDC buck-boost battery charge controller to charge a 1- to 5-cell battery from a wide range of input sources including USB adapter, high voltage USB-C Power Delivery (PD) sources, and traditional adapters. It offers a low component count, high efficiency solution for space constrained, 1- to 5-cell battery charging applications. The Narrow VDC buck-boost architecture avoid direct power path from input source to system voltage which implements wide input voltage range and narrow system voltage range at same time. Narrow system voltage range is valuable for faster battery supplement and lower MOSFET rating for next stage converter.
The NVDC configuration allows the system to be regulated based on battery voltage, but not drop below system minimum voltage. The system keeps operating even when the battery is completely discharged or removed. When load power exceeds input source rating, the battery goes into supplement mode and prevents the system from crashing.
During power up, the charger sets the converter to a buck, boost, or buck-boost configuration based on the input source and battery conditions. The charger seamlessly transitions between the buck, boost, and buck-boost operation modes without host control.
In the absence of an input source, the BQ25730 supports the USB On-the-Go (OTG) function from a 1- to 5-cell battery to generate an adjustable 3V to 24V output on VBUS with 8mV resolution. The OTG output voltage transition slew rate can be configured to comply with the USB-PD 3.0 PPS specification.
The latest version of the USB-C PD specification includes Fast Role Swap (FRS) to ensure power role swapping occurs in a timely fashion so that the device(s) connected to the dock can avoid experiencing momentary power loss or glitching. This device integrates FRS in compliance with the PD specification.
TI patented switching frequency dithering pattern can significantly reduce EMI noise over the whole conductive EMI frequency range (150kHz to 30MHz). Multiple dithering scale options are available to provide flexibility for different applications to simplify EMI noise filter design.
The charger can be operated in the TI patented Pass Through Mode (PTM) to improve efficiency over the full load range. In PTM, input power is directly passed through the charger to the system. Switching losses of the MOSFETs and inductor core loss can be saved for high efficiency operation.
The BQ25730 is available in a 32-pin 4mm × 4mm WQFN package.
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技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | BQ25730 I2C 1- to 5-Cell Buck-Boost Narrow VDC Battery Charge Controller with Power Path Control and USB-C PD 3.0 OTG Output datasheet (Rev. A) | PDF | HTML | 2024年 1月 24日 |
| Application note | Layout Guide for Buck-Boost Charger BQ257XX Series | PDF | HTML | 2024年 1月 30日 | |
| Application note | LiFePO4 Design Considerations | PDF | HTML | 2023年 7月 26日 | |
| Application note | Autonomous Smart Battery Guide | PDF | HTML | 2021年 10月 15日 | |
| Certificate | BQ25730EVM EU RoHS Declaration of Conformity (DoC) | 2021年 2月 16日 | ||
| EVM User's guide | BQ2573x Evaluation Module (Rev. A) | PDF | HTML | 2021年 1月 19日 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
BQ25730EVM — I2C NVDC 1 至 5 芯、16-A 降壓-升壓電池充電控制器評估模組
TI-CHARGER-GUI — 適於與 USB2ANY 和電池充電搭配使用的 GUI 軟體評估模組
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN (RSN) | 32 | 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。