A power supply comprising: a power switching element (Q10); a control circuit to output a control signal for controlling opening or closing of the power switching element (Q10); and a gate drive circuit to open or close the power switching element (Q10) in accordance with the control signal, wherein the gate drive circuit comprises: a first inductive circuit (L1) comprising a number of windings and connected to a supply voltage source (Vdd), a second inductive circuit (L2) comprising a number of windings and connected to an input stage of the power switching element (Q10), a first switching circuit (Q1) to control current flowing through the first inductive circuit (L1), and a second switching circuit (Q2) to control current flowing through the second inductive circuit (L2), wherein the gate drive circuit transfers electrical energy from the input stage of the power switching element (Q10) to the supply voltage source (Vdd) and transfers energy from the supply voltage source (Vdd) to the input stage of the power switching element (Q10), using the first and second inductive circuits (L1 and L2), and wherein the gate drive circuit turns on and off the first switching circuit (Q1) and the second switching circuit (Q2) alternately during a charge time (Tcharge) and turns on the second switching circuit (Q2) after turning on the first switching circuit (Q1), for increasing a voltage at the input stage of the power switching element (Q10). a power switching element (Q10); a control circuit to output a control signal for controlling opening or closing of the power switching element (Q10); and a gate drive circuit to open or close the power switching element (Q10) in accordance with the control signal, wherein the gate drive circuit comprises: a first inductive circuit (L1) comprising a number of windings and connected to a supply voltage source (Vdd), a second inductive circuit (L2) comprising a number of windings and connected to an input stage of the power switching element (Q10), a first switching circuit (Q1) to control current flowing through the first inductive circuit (L1), and a second switching circuit (Q2) to control current flowing through the second inductive circuit (L2), a first inductive circuit (L1) comprising a number of windings and connected to a supply voltage source (Vdd), a second inductive circuit (L2) comprising a number of windings and connected to an input stage of the power switching element (Q10), a first switching circuit (Q1) to control current flowing through the first inductive circuit (L1), and a second switching circuit (Q2) to control current flowing through the second inductive circuit (L2), wherein the gate drive circuit transfers electrical energy from the input stage of the power switching element (Q10) to the supply voltage source (Vdd) and transfers energy from the supply voltage source (Vdd) to the input stage of the power switching element (Q10), using the first and second inductive circuits (L1 and L2), and wherein the gate drive circuit turns on and off the first switching circuit (Q1) and the second switching circuit (Q2) alternately during a charge time (Tcharge) and turns on the second switching circuit (Q2) after turning on the first switching circuit (Q1), for increasing a voltage at the input stage of the power switching element (Q10). <EOS>