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发明公开
CN103620930A 栅极驱动电路 失效 - 权利终止

栅极驱动电路
摘要：
一种栅极驱动电路，其对作为功率用半导体元件的IGBT（2）进行驱动，该栅极驱动电路具有：恒流栅极驱动电路（1），其以恒定电流对IGBT（2）的栅极容量进行充电；以及恒压栅极驱动电路（5），其经由MOSFET（4）及电阻（5-1）的串联电路，并联连接在恒流栅极驱动电路（1）的输入和输出端之间，以恒定电压对IGBT（2）的栅极容量进行充电，在该栅极驱动电路中，在驱动IGBT（2）时，使用恒流栅极驱动电路（1）和恒压栅极驱动电路（5）这两者，对IGBT（2）的栅极容量进行充电。
摘要（英）：

This gate drive circuit which drives an IGBT (2) as a power semiconductor element is provided with a constant current gate drive circuit (1), which charges a gate capacitor of the IGBT (2) with a constant current; and a constant voltage gate drive circuit (5), which is connected in parallel to between input and output terminals of the constant current gate drive circuit (1) via a series circuit of an MOSFET (4) and a resistor (5-1), and charges the gate capacitor of the IGBT (2) with a constant voltage. At the time of driving the IGBT (2), the gate capacitor of the IGBT (2) is charged using both the constant current gate drive circuit (1) and the constant voltage gate drive circuit (5).

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