Selective source degeneration as a control technique for power electronic switches
AssigneeAnalog Devices, Inc.
InventorsKenneth G. Richardson, Ryan Schnell
Life of this patent
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Abstract
Various techniques are described to control the rate of change of current (di/dt) and the rate of change of voltage (dV/dt) for power electronic switches with conventional gate drivers and a few additional components. By implementing these techniques, designers may achieve better control over the switching behavior, reduce losses, and improve the overall reliability and efficiency of their circuits. This is particularly important in applications such as power inverters, where high performance and reliability are important.
Claims20
A power switching circuit configured for coupling with a gate driver circuit, the power switching circuit comprising:
- a transistor including:
- a first terminal configured for coupling with a load;
- a second terminal configured for coupling with an inductance;
- and
- a control terminal configured for coupling with the gate driver circuit;
- a switch;
- and
- a feedback circuit coupled with the switch and including at least one resistive element, wherein the switch is configured for coupling, based on a control signal, the feedback circuit with the gate driver circuit.
A power switching circuit configured for coupling with a gate driver circuit, the power switching circuit comprising:
- a transistor including:
- a first terminal configured for coupling with a load;
- a second terminal configured for coupling with an inductance;
- and
- a control terminal configured for coupling with the gate driver circuit;
- a pair of Zener diodes, connected in opposition;
- and
- a feedback circuit coupled with the pair of Zener diodes and including at least one resistive element, wherein the feedback circuit is coupled with the gate driver circuit.
A power switching circuit configured for coupling with a gate driver circuit, the power switching circuit comprising:
- a transistor including:
- a first terminal configured for coupling with a load;
- a second terminal configured for coupling with an inductance;
- and
- a control terminal configured for coupling with the gate driver circuit;
- a feedback circuit including at least one resistive element and at least one capacitive element, wherein the feedback circuit is configured for coupling with the gate driver circuit.
A power switching circuit configured for coupling with a first gate driver circuit, the power switching circuit comprising:
- a transistor including:
- a first terminal configured for coupling with a load;
- a second terminal configured for coupling with an inductance;
- and
- a control terminal configured for coupling with the gate driver circuit;
- a bidirectional switch including a first transistor and a second transistor;
- a second gate driver circuit coupled with the first transistor and the second transistor, second gate driver circuit configured for generating control signals to the first transistor and the second transistor;
- and
- a feedback circuit coupled with the bidirectional switch and including at least one resistive element, wherein the bidirectional switch is configured for coupling, based on the control signals, the feedback circuit with the first gate driver circuit.
Dependencies are inferred from the claim text.