The circuit can be simplified by combining inductors L1 and L2 into a single, dual winding inductor. Using a dual winding, or coupled inductor, saves space on the circuit board while also reducing component count and cost. Another advantage of using a single, coupled inductor is that a lower inductance value is required to achieve continuous operation because the primary and secondary currents add within the coupled inductor. The lower inductance value contributes to space savings because inductors are sized according to their energy storage capability, as defined by the inductor energy equation: Energy equals half the product of the inductance times the current squared (E= ½ L * I2). The coupled inductor enables a lower inductance “L” to achieve continuous current conduction mode than is possible with two single inductors.