| 摘要 |
<p>A converter 10 has an IGBT power switch 34. A resonant tank circuit couples the emitter of the IGBT to a voltage source. A gate controller turns the IGBT on and off by applying a suitable gate control voltage to the gate. The resonant tank circuit imposes a sinusoidal waveform on the emitter current. After the emitter current reverses direction, the gate signal is terminated and the IGBT is shut off. Minority carriers in the emitter are swept away by the tank circuit and are further dissipated in a transformer that is coupled to the tank circuit.</p> |
