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US 2022/0077850 A1Published application
Thyristor control device
AssigneeSTMicroelectronics (Tours) SAS
InventorsRomain PICHON, Yannick HAGUE
Life of this patent
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Abstract
A control device includes a triac and a first diode that is series-connected between the triac and a first terminal of the device that is configured to be connected to a cathode gate of a thyristor. A second terminal of the control device is configured to be connected to an anode of the thyristor. The triac has a gate connected to a third terminal of the device that is configured to receive a control signal. The thyristor is a component part of one or more of a rectifying bridge circuit, an in-rush current limiting circuit or a solid-state relay circuit.
Claims19
A control device for controlling a thyristor, comprising:
- a triac;
- and
- a first diode series-connected between the triac and a first terminal of the control device that is configured to be connected to a cathode gate of the thyristor;
- and
- wherein a second terminal of the control device is configured to be connected to an anode of the thyristor;
- wherein the triac has a gate connected to a third terminal of the control device that is configured to receive a control signal.
3 more elements
A rectifying bridge, comprising:
- a first branch and a second branch connected in parallel between a first internal node that is coupled to a first output node of the rectifying bridge, and a second internal node of the rectifying bridge;
- a resistor and a thyristor connected in parallel with each other between the second internal node and a second output node of the rectifying bridge;
- wherein an anode of the thyristor is connected to the second output node;
- and
- a control device, comprising:
- a triac;
- and
- a first diode series-connected between the triac and a first terminal of the control device that is configured to be connected to a cathode gate of the thyristor;
- and
- wherein a second terminal of the control device is configured to be connected to an anode of the thyristor;
- wherein the triac has a gate connected to a third terminal of the control device that is configured to receive a control signal;
- and
- wherein the second terminal of the control device is connected to the second output node.
10 more elements
A rectifying bridge, comprising:
- a first branch and a second branch connected in parallel between a first internal node of the rectifying bridge and a second internal node of the rectifying bridge;
- wherein the first branch includes a first thyristor comprising a cathode connected to a first input node of the rectifying bridge, an anode connected to the first internal node;
- wherein the second branch includes a second thyristor comprising a cathode connected to a second input node of the rectifying bridge, an anode connected to the first internal node;
- a control device, comprising:
- a triac;
- and
- a first diode series-connected between the triac and a first terminal of the control device that is configured to be connected to a cathode gate of the first thyristor;
- wherein a second terminal of the control device is configured to be connected to anodes of the first thyristor and second thyristor and the first internal node;
- wherein the triac has a gate connected to a third terminal of the control device that is configured to receive a control signal;
- and
- a second diode series-connected between the triac and a fourth terminal of the control device that is configured to be connected to a cathode gate of the second thyristor.
8 more elements
A solid state relay, comprising:
- a first thyristor and a second thyristor connected in antiparallel between a first relay terminal and a second relay terminal;
- wherein an anode of the first thyristor is connected to the first relay terminal;
- and
- a control device comprising:
- a triac;
- and
- a first diode series-connected between the triac and a first terminal of the control device that is configured to be connected to a cathode gate of the first thyristor;
- and
- wherein a second terminal of the control device is configured to be connected to an anode of the first thyristor and the first relay terminal;
- wherein the triac has a gate connected to a third terminal of the control device that is configured to receive a control signal.
7 more elements
Dependencies are inferred from the claim text.