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BQ79616-Q1: 实际应用问题咨询

Part Number: BQ79616-Q1
Other Parts Discussed in Thread: BQ79600-Q1, BQ79616

请教TI老师们:

    1.BQ79616-Q1的规格书第202页的图10-1中的GND表示有误么?下面的地是不是应该都表示为GND1,而上半部的地是不是应该表示为GNDN?

    2.有了第一个问题,所以我想核实一下,BQ79616-Q1中提到的堆栈我的理解就是一组组电池串联起来,比如我现在用了五组电池模组,每组电池含10个电芯,每个电芯电压是3V,则我应用BQ79616-Q1的堆栈链接

是不是最后就是150V电压?由于第一个图例存在疑问,导致我对堆栈串联都出现疑问了。

    3.我用的是BQ79616-Q1芯片,每组电池电压最高16串,但我实际只有10各电芯连接,所以其余6串电芯我就采取BQ79616-Q1规格书中第194页图10-2中的a图连接是否正确?

    4.BQ79616-Q1规格书中示例的菊花连接通讯电路为电容+扼流线圈的电路,而BQ79600的芯片规格书中示例的通讯接口为变压器形式,我如果按照其示例模式设计电路,那BQ7900的变压器隔离和BQ79616-Q1的电容隔离

通讯有没有问题?

     5.BQ79616-Q1的堆栈形式的实际应用案例资料有么?我想找一个参考一下。

非常感谢TI的支持,谢谢!

  • 第4个问题通讯两边的电路形式是同一种形式较好还是都可以?

  • 您好

    1, 两个地不同,一个是模拟地,一个是数字地

    2,您的理解是正确的

    3,是的,不是用的引脚请参考图 10-2. Unused VC and CB Channels

    4,In a large stack of batteries, having the BQ79600-Q1 communication bridge between the MCU and the battery monitor devices allows you to keep the BMU (Low voltage system) isolated from the CMU (high voltage battery stack) as shows in the "Simplified System Diagram" in the BQ79600-Q1 datasheet.

    Please notice BQ79600-Q1 is able to communicate with the MCU using either SPI or UART (BQ79616 doesn't support SPI communication to the MCU. It also has a feature (automatic host wakeup) when using ring architecture that allows the system to be put in a low power mode while still monitoring faults. See more details in sections 7.3.4 "INH/Reverse Wakeup" and 7.3.5 Sniff Detector" in the device datasheet.

    5,请参考下面链接的内容:

    www.ti.com.cn/.../slyp827.pdf