Abstract: A method for operating a normally off or normally on power semiconductor element. A threshold voltage change in a threshold voltage of the power semiconductor element in relation to a reference threshold voltage is determined. A switch-on gate voltage is applied between a gate terminal and a source terminal of the power semiconductor element for the purpose of switching on the power semiconductor element is changed by the threshold voltage change in relation to a reference switch-on gate voltage corresponding to the reference threshold voltage.

Abstract: An electronic assembly has a printed circuit board with first and second component sides. A cooling element on the first component side is cooled by forced convection produced by a convection unit. A majority of electronic components are arranged on the second component side. Non-current-conducting plated-through holes are used to transport thermal energy generated by an electronic component from the second component side to the first component side. The thermal energy can be transported away from the printed circuit board and dissipated by means of the forced convection. A corresponding method for dissipating heat from an electronic assembly is also disclosed.

Abstract: An electronic assembly has a printed circuit board with first and second component sides. A cooling element on the first component side is cooled by forced convection produced by a convection unit. A majority of electronic components are arranged on the second component side. Non-current-conducting plated-through holes are used to transport thermal energy generated by an electronic component from the second component side to the first component side. The thermal energy can be transported away from the printed circuit board and dissipated by means of the forced convection. A corresponding method for dissipating heat from an electronic assembly is also disclosed.

Abstract: A modular converter includes an inverter having power semiconductor switches made of GaN or InGaN and being operated with a blocking voltage of at least 400V and with a clock frequency of at least 40 kHz. A connection assembly distributes input and output signals and input and output AC voltages. A control assembly generates control signals for the inverter, a supply assembly with a rectifier converts the input alternating voltage into an intermediate circuit voltage, a rear wall assembly distributes the intermediate circuit voltage and the control signals for the inverter, and a load assembly converts the intermediate circuit voltage into the output alternating voltage for a load or for a secondary network. The connection assembly and the rear wall assembly are electrically connected to the other assemblies by way of releasable mechanical connections. A modular converter system that uses the modular inverter is also described.

Abstract: A method for operating a normally off or normally on power semiconductor element. A threshold voltage change in a threshold voltage of the power semiconductor element in relation to a reference threshold voltage is determined. A switch-on gate voltage is applied between a gate terminal and a source terminal of the power semiconductor element for the purpose of switching on the power semiconductor element is changed by the threshold voltage change in relation to a reference switch-on gate voltage corresponding to the reference threshold voltage.

Abstract: A modular converter includes an inverter having power semiconductor switches made of GaN or InGaN and being operated with a blocking voltage of at least 400V and with a clock frequency of at least 40 kHz. A connection assembly distributes input and output signals and input and output AC voltages. A control assembly generates control signals for the inverter, a supply assembly with a rectifier converts the input alternating voltage into an intermediate circuit voltage, a rear wall assembly distributes the intermediate circuit voltage and the control signals for the inverter, and a load assembly converts the intermediate circuit voltage into the output alternating voltage for a load or for a secondary network. The connection assembly and the rear wall assembly are electrically connected to the other assemblies by way of releasable mechanical connections. A modular converter system that uses the modular inverter is also described.