Semiconductor die with on-die power switch for selecting target operating voltage from operating voltages provided by different power supplies

The invention provides a semiconductor die comprising: an on-die power switch comprising: a plurality of power input nodes receiving a plurality of operating voltages from a plurality of different power sources, respectively; a power output node for outputting a target operating voltage selected from the plurality of operating voltages; and a switching circuit for selectively coupling one of the plurality of power input nodes to the power output node; the target device is operated according to a target operation voltage provided by a power switch on the crystal grain; wherein the on-die power switch and the target device are separate circuit blocks in a semiconductor die. 本发明提供一种半导体晶粒，包括：晶粒上电源开关，包括：多个电源输入节点，分别从多个不同的电源接收多个操作电压；电源输出节点，用于输出从所述多个操作电压中选择的目标操作电压；以及开关电路，用于选择性地将多个电源输入节点中一个耦接到电源输出节点；以及目标器件，根据所述晶粒上电源开关提供的目标操作电压进行操作；其中，所述晶粒上电源开关和所述目标器件是半导体晶粒中的分离的电路块。