Method to reduce leakage power and to increase the performance of a circuit, wherein said circuit can be switched to a doze mode instead or additional to a sleep mode, wherein the supply voltage of said circuit is reduced during doze mode in order to reduce leakage power within said circuit and to keep an internal state of the circuit during doze mode simultaneously, wherein said supply voltage is reduced by using a diode causing a voltage drop to a supply current flowing through said diode, said voltage drop being large enough to reduce leakage power within said circuit significantly, and small enough to keep the internal state of said circuit during doze mode, wherein said diode is switched by a switch arranged parallel to said diode.