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https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/610829/bq25895-system-voltage-vsys-regulation
如果存在 VBUS、窄 VDC 架构是否仅调节系统电压(VSYS)？
换言之，如果 VBUS=0 且 VBAT < SYS_MIN，VSYS 是什么？
Christopher、
没错。 当未应用 VBUS 时、充电器处于 HiZ/睡眠模式并且 VSYS=VBAT-ISYS (RdsonQ4)。
