| 摘要 |
<p>The invention concerns a power switching circuit (1) comprising
- a planar transformer (2) having a primary winding (2a) and a secondary winding (2b),
- a power switch (3) having a control gate (4) in electrical connection with the secondary winding (2b),
- a switching element (5) configured to provide switching on and off of an electrical current in the primary winding (2a) of the transformer (2),
- flyback switching circuitry (6) configured to, in response to a control signal (17), send a turn-on electrical pulse by:
- controlling the switching element (5) to switch on, to build up a current in the primary winding (2a), and
- controlling the switching element (5) to switch off, to dump the energy stored in the transformer (2) in the secondary winding (2b) inducing the turn-on electrical pulse in the control gate (4) turning the power switch (3) on. The invention also concerns a machine or device incorporating a power switching circuit and a method for driving a control gate of a power switch.</p> |
