Control device for controlling a power semiconductor component and method for controlling a power semiconductor component
AssigneeSiemens Aktiengesellschaft
InventorsMarkus Mauersberger, Rainer Sommer
Life of this patent
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Abstract
A control device for controlling a power semiconductor component which includes at least two voltage-controlled power semiconductor devices which are electrically connected in parallel and which have each a control connection is disclosed. The control device includes a driver element which can be used to set electrical voltages at the control connections of the power semiconductor devices. The control device includes a measuring unit configured to capture electrical currents which flow through the power semiconductor devices. The driver element is configured to set a level and/or a temporal profile of the electrical voltages on the basis of the electrical currents.
Claims16
A control device for controlling a power semiconductor component having at least two voltage-controlled power semiconductor component parts which are electrically connected in parallel and which each have a control connection, said control device comprising:
- a measuring unit configured to detect electric currents flowing through the power semiconductor component parts;
- and
- a driver element configured to
- set electrical voltages at the control connections of the power semiconductor component parts,
- to set an amount and/or a time curve of the electrical voltages as a function of the electric currents,
- to set a temporal change in the electrical voltages applied at the control connections by adjusting a slope of straight edges of the electrical voltages when the power semiconductor component parts are switched on and/or switched off as a function of the electric currents,
- to set the electrical voltages on the basis of voltages set during a preceding operation of the power semiconductor component, wherein the electrical currents, which flow through the power semiconductor component parts with specific settings with respect to the electrical voltages, are stored, and
- to determine the temporal change in the electrical voltages on the basis of the preceding settings.
A power semiconductor component, comprising:
- at least two voltage-controlled power semiconductor component parts which are electrically connected in parallel and which each have a control connection;
- and
- a control device for controlling the at least two voltage-controlled power semiconductor component parts, said control device comprising a measuring unit configured to detect electric currents flowing through the power semiconductor component parts, and a driver element configured to set electrical voltages at the control connections of the power semiconductor component parts, to set an amount and/or a time curve of the electrical voltages as a function of the electric currents, to set a temporal change in the electrical voltages applied at the control connections by adjusting a slope of straight edges of the electrical voltages when the power semiconductor component parts are switched on and/or switched off as a function of the electric currents, to set the electrical voltages on the basis of voltages set during a preceding operation of the power semiconductor component, wherein the electrical currents, which flow through the power semiconductor component parts with specific settings with respect to the electrical voltages, are stored, and to determine the temporal change in the electrical voltages on the basis of the preceding settings.
A method for controlling a power semiconductor component having at least two voltage-controlled power semiconductor component parts which are electrically connected in parallel and which each have a control connection, said method comprising:
- setting with a driver element electrical voltages at the control connections of the power semiconductor component parts;
- detecting by a measuring unit electric currents flowing through the respective power semiconductor component parts;
- setting by the driver element an amount and/or a time curve of the electrical voltages as a function of the electric currents;
- setting by the driver element a temporal change in the electrical voltages applied to the control connections by adjusting a slope of straight edges of the electrical voltages when the power semiconductor component parts are switched on and/or switched off as a function of the electric currents;
- setting by the driver element the electrical voltages on the basis of voltages set during a preceding operation of the power module;
- storing the electrical currents, which flow through the power semiconductor component parts with specific settings with respect to the electrical voltages;
- and
- determining the temporal change in the electrical voltages on the basis of the preceding settings.
Dependencies are inferred from the claim text.