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TAS2781EVM: DSP的VBAT POWER LIMIT保护功能如何使用?

Part Number: TAS2781EVM

在VIN上加4V电压,将VBAT limiter设为6V,current limiter设为0.5A,测量VBAT端电流没有减小,模式是PWR_MODE1,请问是否有其他寄存器需要配置?

  • 您好,power limit可以限制在PVDDL也可以限制在PVDDH上,通过寄存器0x65 bit7来配置的,默认是PVDDL。

    可以看到如果过流限制在PVDDH上,那么过流阈值为5.5A,典型值为6.7A,限制在PVDDL上,过流限制阈值为 2A,典型值为2.6A。