| 摘要 |
<p>There is described a DC-DC converter (20) having a first and a second input terminal (22, 24) connected, in use, to an electric power source; a first and a second output terminal (26, 28), between which a load (30) is connected in use; a transformer (32); a bridge switching circuit (34) connected at the input to the first and second input terminal (22, 24), and at the output to the primary winding of the transformer (32); a rectifier circuit (36) connected at the input to the secondary winding of the transformer (32), and having a first and a second output terminal (68, 70) connected respectively to a first and a second intermediate node (A, B); a snubber circuit (39) connected between the first and second intermediate node (A, B); and a filter circuit (38) interposed between the snubber circuit (39) and the first and second output terminal (26, 28) of the converter; the snubber circuit (39) having a capacitor (96) and a switch (94) connected in series between the first and second intermediate node (A, B), and a diode (98) connected in parallel with the switch (94). <IMAGE></p> |
