| 摘要 |
A converter for converting AC to DC or DC to DC comprises a first transformer (10) having a secondary winding connected to a DC-load side of the converter, semiconductor switches connected to a primary winding of the transformer, a drive circuit configured to control the semiconductor switches to switch so as to deliver a voltage to the primary winding with a frequency exceeding 1 MHz and electronic components. The drive circuit comprises a second transformer (12) for voltage level shifting of said semiconductor switches with respect to a logic drive circuit unit of said drive circuit. The transformers are arranged inside or at the surface of a first printed circuit board (30), and the electronic components of the converter including said semiconductor switches are arranged inside or at the surface of a second printed circuit board (31). The two circuit boards are separated by a shielding ferrite layer (32) sandwiched therebetween. |
