Magnetic device and power converter with same

A power converter, comprising:

• a magnetic device comprising:
• a first common magnetic leg;
• a second common magnetic leg opposed to the first common magnetic leg;
• N coupled magnetic legs discretely disposed between the first common magnetic leg and the second common magnetic leg, wherein N is an integer greater than or equal to 3;
• a first winding disposed between every two adjacent coupled magnetic legs, disposed between every even-numbered coupled magnetic leg and the second common magnetic leg, and disposed between every odd-numbered coupled magnetic leg and the first common magnetic leg, wherein the first winding comprises a first input part, at least one first intermediate part and a first output part, which are connected with each other sequentially, wherein the first input part is disposed between the first common magnetic leg and a first coupled magnetic leg of the N coupled magnetic legs, and the at least one first intermediate part is connected between the first input part and the first output part, wherein when N is odd, the first output part is disposed between an N-th coupled magnetic leg of the N coupled magnetic legs and the first common magnetic leg, wherein when N is even, the first output part is disposed between the N-th coupled magnetic leg of the N coupled magnetic legs and the second common magnetic leg;
• and
• a second winding disposed between every two adjacent coupled magnetic legs, disposed between every odd-numbered coupled magnetic leg and the second common magnetic leg, and disposed between every even-numbered coupled magnetic leg and the first common magnetic leg, wherein the second winding comprises a second input part, at least one second intermediate part and a second output part, which are connected with each other sequentially, wherein the second input part is disposed between the second common magnetic leg and the first coupled magnetic leg, and the at least one second intermediate part is connected between the second input part and the second output part, wherein when N is odd, the second output part is disposed between the N-th coupled magnetic leg of the N coupled magnetic legs and the second common magnetic leg, wherein when N is even, the second output part is disposed between the N-th coupled magnetic leg of the N coupled magnetic legs and the first common magnetic leg;
• a first half-bridge arm, wherein a midpoint of the first half-bridge arm is connected to the first input part of the first winding;
• and
• a second half-bridge arm, wherein a midpoint of the second half-bridge arm is connected to the second input part of the second winding.