| 摘要 |
The invention relates to a circuit arrangement for limiting over-voltages in power semiconductor components (12) and a method for controlling a power semiconductor component, whereby said circuit arrangement is provided with a voltage divider circuit (14), parallel to the conducting-state stretch (16) of the power semiconductor component (12), which has a first impedance (Z1) and a second impedance (Z2). According to the invention, at least one further impedance may be switched by at least one switching means (22), parallel to and/or in series with the first impedance (Z1) and/or the second impedance (Z2), whereby a control connection, for the at least one switching means (22), is connected to a switching logic circuit (24), the switching state of which may be changed, depending on an instantaneous operating state for the power semiconductor component (2). The transmission properties of a control circuit for the power semiconductor component can thus be matched to various instantaneous operating states. |
