| 摘要 |
Disclosed in the embodiments of the present invention are a magnetic core, an integrated magnetic component comprising said magnetic core, an active clamping forward-flyback circuit comprising said integrated magnetic component, and a switched-mode power supply. The magnetic core comprises a first magnetic column, a second magnetic column, a third magnetic column, and a horizontal column; the horizontal column is connected to the same end of the first magnetic column, the second magnetic column and the third magnetic column; the second magnetic column is positioned between the first magnetic column and the third magnetic column, wherein the cross-sectional area of the first magnetic column perpendicular to the line of magnetic induction is different to the cross-sectional area of the third magnetic column perpendicular to the line of magnetic induction. In the integrated magnetic component using the aforementioned magnetic core, a coil is wound around the magnetic core to form two sets of transformers. The active clamping forward-flyback circuit comprises the aforementioned integrated magnetic component, such that the magnetic column cross-sectional area of the forward transformer is smaller than the magnetic column cross-sectional area of the flyback transformer, reducing the size and weight of the forward-flyback circuit whilst ensuring normal functioning of the circuit. |
