TI中文支持网Part Number:BQ24735
现手上有一款RRC2054-2的二次锂电池组，该电池具有SMBus接口，在充电器电压电流都足够大的时候请问BQ24735能否可以直接和电池组的SMBus连接，而不需要单片机进行充电管理?
Star Xu：
您好，电池组需要接在BQ24735的P+P-端。电池端的SMBus和BQ24735的SMBus不能正常工作。
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jia rong：
您看下这个链接里面提到的智能系统 Figure 1-2 Smart Battery System，就是没有mcu的，那么bq24735是不是可以使用这种方式？
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jia rong：
www.ti.com.cn/…/GUID-8FFFC923-DE31-4EFE-9720-A17720311623
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Star Xu：
您好，查到了，BQ24735可以使用charge smart batteries
these chargers can be used to charge smart batteries, but please note that there are a few features which are not fully implemented:
Our SMBus chargers are not fully SBS 1.1 (Smart Battery System 1.1) capable as a Level 2 charger. The ChargeCurrent() and ChargeVoltage() register addresses match the SBS spec, but our chargers do not have register 0x16 for the AlarmWarning(). In many applications, our SMBus chargers are paired with a TI battery gauge, which is SBS 1.1 compliant. These gauges typically have a broadcast mode where they will communicate with our SMBus chargers and write to the ChargeCurrent() and ChargeVoltage() registers. Please refer to the following E2E thread for more discussion about this topic:
https://e2e.ti.com/support/power-management/f/196/t/859947
We currently do not have a charger in our portfolio that supports PEC (packet error checking). Please disable PEC from the smart battery's broadcasts to the charger.
