| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method and apparatus for implementing a new semiconductor switch multistage drive circuit for reducing losses in a semiconductor switch when it is turned from an off state to an on state or from an on state to an off state. <P>SOLUTION: The reduction in losses is achieved without influencing dv/dt across the semiconductor switch during a first time period while the semiconductor switch is switching. This reduction in losses is therefore achieved with very little increase in the noise generated due to rapid dv/dt during the first time period when the semiconductor switch is switching. The configuration of the circuitry to achieve this reduction in switching losses has an advantage of less sensitivity to manufacturing tolerances and temperature effects than alternative semiconductor switch drive schemes to achieve similar results. <P>COPYRIGHT: (C)2012,JPO&INPIT |
