Actuating circuit for three-level inverter

摘要

An actuating circuit having a primary-side circuit part with an actuating logic circuit and a primary-side reference potential, and four secondary-side circuit parts each having one driver stage designed for actuating a phase of a three-level inverter and a first to fourth semiconductor switch, wherein each semiconductor switch and the secondary-side circuit part assigned thereto has a respective first to fourth secondary-side reference potential, and wherein in each case a level shifter connects the primary-side circuit part to the respective secondary-side circuit part and thus is assigned in each case to both circuit parts. In this connection, the primary-side reference potential corresponds to the first secondary-side reference potential. Furthermore, at least the actuating logic circuit, the first and second level shifters and the first and second driver stages are monolithically integrated.

主权项

1. An actuating circuit comprising:
a primary-side circuit part having an actuating logic circuit and a primary-side reference potential; at least one three level inverter; a first secondary-side circuit part having a first driver stage for actuating a phase of one of said at least one three-level inverters, and a first semiconductor switch, each of said first secondary-side circuit part and said first semiconductor switch having a first secondary-side reference potential; a first level shifter connected to said primary-side circuit part and to said first secondary-side circuit part; a second secondary-side circuit part having a second driver stage for actuating a phase of one of said at least one three-level inverters, and a second semiconductor switch, each of said second secondary-side circuit part and said second semiconductor switch having a second secondary-side reference potential; a second level shifter connected to said primary-side circuit part and to said second secondary-side circuit part; a third secondary-side circuit part having a third driver stage for actuating a phase of one of said at least one three-level inverters, and a third semiconductor switch, each of said third secondary-side circuit part and said third semiconductor switch having a third secondary-side reference potential; a third level shifter connected to said primary-side circuit part and to said third secondary-side circuit part; a fourth secondary-side circuit part having a fourth driver stage for actuating a phase of one of said at least one three-level inverters, and a fourth semiconductor switch, each of said fourth secondary-side circuit part and said fourth semiconductor switch having a fourth secondary-side reference potential; and a fourth level shifter connected to said primary-side circuit part and to said fourth secondary-side circuit part; wherein said primary-side reference potential corresponds to said first secondary-side reference potential; and wherein at least said actuating logic circuit, said first and second level shifters and said first and second driver stages are monolithically integrated in a first HVIC.