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US 11,152,858 B2Granted
Circuit and method for damping supply-voltage-induced oscillations in the input circuit of a DC-to-DC converter
AssigneeWAGO Verwaltungsgesellschaft mbH
InventorWalter Bindseil
Life of this patent
Estimating the term…
Abstract
A circuit having a DC-to-DC converter and an input circuit connected on the line side of the DC-to-DC converter, having a first terminal and a second terminal for connection to a power supply and a third terminal and a fourth terminal for connection to the DC-to-DC converter. Between the first and third terminals, the input circle has a semiconductor element, wherein a first component terminal of the semiconductor element is connected via at least a first capacitor and a second capacitor to a second component terminal of the semiconductor element, wherein a resistance of the semiconductor element is controllable by a voltage between the first component terminal and the second component terminal.
Claims15
A circuit, comprising:
- a DC-to-DC converter;
- and
- an input circuit connected on a line side of the DC-to-DC converter, which has a first terminal and a second terminal for connection to a power supply and a third terminal and a fourth terminal for connection to the DC-to-DC converter;
- wherein the input circuit has a semiconductor element arranged between the first terminal and the third terminal, an input voltage being applied by the input circuit,
- wherein a first component terminal of the semiconductor element is connected to a second component terminal of the semiconductor element by a first capacitor and a second capacitor,
- wherein a resistance of the semiconductor element is controllable by a voltage applied between the first component terminal and the second component terminal, and
- wherein the voltage applied between the first component terminal and the second component terminal of the semiconductor element drops at substantially a same slope as the input voltage.
4 more elements
A system, comprising:
- a DC-to-DC converter;
- and
- an input circuit connected on a line side of the DC-to-DC converter, which has a first terminal and a second terminal for connection to a power supply and a third terminal and a fourth terminal for connection to the DC-to-DC converter;
- an impulse voltage generator, which has decoupling inductances,
- wherein the input circuit has a semiconductor element arranged between the first terminal and the third terminal,
- wherein a first component terminal of the semiconductor element is connected to a second component terminal of the semiconductor element at least by a first capacitor and a second capacitor,
- wherein a resistance of the semiconductor element is controllable by a voltage applied between the first component terminal and the second component terminal, and
- wherein the first terminal is connected to a first pole of the impulse voltage generator and the second terminal is connected to a second pole of the impulse voltage generator.
5 more elements
A method for testing a circuit for robustness against impulse voltages, comprising:
- applying a voltage to an input circuit of the circuit, wherein the input circuit has a semiconductor element;
- and
- damping an oscillation generated by applying the voltage in the input circuit, which causes a voltage fluctuation in the input circuit,
- wherein the damping comprises an increase in the resistance of the semiconductor element controlled by the voltage fluctuation, the semiconductor element providing volume resistance for an LC resonant circuit of the circuit.
1 more element
A circuit comprising:
- a DC-DC converter;
- and
- an input circuit connected upstream of the DC/DC converter, the input circuit having a first connection and a second connection for connection to a power supply and a third connection and a fourth connection for connection to the DC voltage converter,
- wherein the input circuit has a semiconductor element with a first component terminal of the semiconductor element that is connected to a second component terminal of the semiconductor element via a first capacitor and a second capacitor,
- wherein the input circuit includes at least the first capacitor, the second capacitor, and one or more resistors which operate to control a volume resistance of the semiconductor element via a first voltage between the first component connection and the second component connection of the semiconductor element, the input circuit dampening a voltage fluctuation generated by applying an input voltage to the input circuit when testing the input circuit for robustness against surge voltages in the input circuit, the dampening by the input circuit generating an increase in the volume resistance controlled by the voltage fluctuation, and
- wherein the input circuit operates to dampen the voltage fluctuation by temporarily increasing the volume resistance to dampen a negative half-wave of an oscillation of the voltage fluctuation.
3 more elements
Dependencies are inferred from the claim text.