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BQ76952EVM: 我现在连接了48v的电源,芯片和ev2400之间的通讯箭头已经亮起。但是依旧存在如下问题:

Part Number: BQ76952EVM
Other Parts Discussed in Thread: BQSTUDIO, BQ76952

1.GUI界面芯片下面有“zzz”的休眠标识,是否表示芯片仍处于休眠模式?此时我已多次按下wake。休眠模式的话应该如何保持长期唤醒?

2.按照快速入门配置时,Commands界面无法进入,所以“FET_EN”无法进行

3.跳过第11步后,CHG_FET和DSG_FET均为on,但是调整为38V后DSG_FET无变化,可能和FET_EN有关?

4.在上述步骤完成后,我连接了3.7V锂电池,芯片的通讯箭头不再亮起,是否和芯片仍在休眠有关

  • 您好,从画面上看,芯片已经唤醒,有连线,有通讯数据。2.2 Quick Start 第六步推荐使用48V。如果接电池板子上接cell的跳线帽需要拿掉。

  • 感谢,电池连接开发板了解了,

    bqstudio的command界面无法进入有什么办法吗?我无法设置FET_EN,这个设置是用来保护板子过压的吗?

  • 您好, By default the BQ76952 configuration allows the part to go to sleep, and the charge FET is turned off in sleep.  It can be surprising to see the DSG FET on with the CHG FET off.  But if FET_EN is set and the part sees the current below its threshold, the CHG will be turned off.   To avoid this set the configuration to keep the CHG on during sleep Settings:FET:FET Options[SLEEPCHG], or disable sleep by the 0x009A SLEEP_DISABLE() subcommand (temporary) or by the Settings:Configuration:Power Config[SLEEP] setting.