Apparatus for charge recycling

One example discloses an apparatus for charge recycling between a first power-domain operating at a first voltage and a second power-domain operating at a second voltage, including: a first power-delivery circuit configured to supply the first voltage to the first power-domain; and a second power-delivery circuit coupled to receive power from both the first power-delivery circuit and the first power-domain; wherein the second power-delivery circuit is configured to supply the second voltage to the second power-domain. 个例子公开种用于在第电压下操作的第功率域与在第二电压下操作的第二功率域之间电荷再循环的设备，所述设备包括：第功率输送电路，其被配置成将所述第电压供应到所述第功率域；和第二功率输送电路，其被耦合以从所述第功率输送电路和所述第功率域两者接收功率；其中所述第二功率输送电路被配置成将所述第二电压供应到所述第二功率域。