An apparatus for charge recycling, in a low power logic circuit, between a first power-domain , comprising a higher and a lower voltage side and configured to operate at a first voltage (VDDtop), and a second power-domain , also comprising a higher and a lower voltage side and configured to operate at a second voltage (VDDbottom), comprising: a first power-delivery circuit , comprising an input , a top-node voltage output and a mid-node voltage output , and configured to receive a maximum operational voltage (Vbattery, VDDbattery) from a DC power source and to supply the first voltage (VDDtop) to the high voltage side of the first power-domain through the top-node voltage output ; a second power-delivery circuit coupled between the first power-domain and the second power-domain to isolate the first and second power-domains from each other and coupled to receive power from a mid-node, to which the mid-node voltage output of the first power-delivery circuit and the lower voltage side of first power-domain are also connected, wherein the second power-delivery circuit is configured to receive a mid-node voltage (Vmid) from the mid-node and to supply the second voltage (VDDbottom) to the higher voltage side of the second power-domain , and wherein the second power-delivery circuit includes a boost converter, based on a switch mode power supply, which controls the mid-node voltage (Vmid) so that the first voltage (VDDtop) plus the second voltage (VDDbottom) is greater than the maximum operational voltage (Vbattery, VDDbattery) of the first power-delivery circuit , and wherein the second voltage (VDDbottom) and the operational voltage (Vbattery, VDDbattery) of the first power-delivery circuit are referenced to a ground potential (GND), and the first voltage (VDDtop) is referenced to the mid-node voltage (Vmid). a first power-delivery circuit , comprising an input , a top-node voltage output and a mid-node voltage output , and configured to receive a maximum operational voltage (Vbattery, VDDbattery) from a DC power source and to supply the first voltage (VDDtop) to the high voltage side of the first power-domain through the top-node voltage output ; a second power-delivery circuit coupled between the first power-domain and the second power-domain to isolate the first and second power-domains from each other and coupled to receive power from a mid-node, to which the mid-node voltage output of the first power-delivery circuit and the lower voltage side of first power-domain are also connected, wherein the second power-delivery circuit is configured to receive a mid-node voltage (Vmid) from the mid-node and to supply the second voltage (VDDbottom) to the higher voltage side of the second power-domain , and wherein the second power-delivery circuit includes a boost converter, based on a switch mode power supply, which controls the mid-node voltage (Vmid) so that the first voltage (VDDtop) plus the second voltage (VDDbottom) is greater than the maximum operational voltage (Vbattery, VDDbattery) of the first power-delivery circuit , and wherein the second voltage (VDDbottom) and the operational voltage (Vbattery, VDDbattery) of the first power-delivery circuit are referenced to a ground potential (GND), and the first voltage (VDDtop) is referenced to the mid-node voltage (Vmid). <EOS>