Circuit Diagram For Switching Action Of Igbt

As the world becomes increasingly digitized, so does the need for efficient yet powerful electrical and electronic components. One of the most vital pieces of such components is an insulated gate bipolar transistor (IGBT). An IGBT is a three-terminal device used to regulate the flow of electricity in an electrical circuit. The IGBT’s switching action allows it to control and switch the directions of current in a circuit.

This article will discuss the different aspects of the IGBT’s switching action, from how it works to the circuit diagram needed to observe it.

An IGBT's switching action is based on the electric field created between the base and collector. This electric field aids in controlling and modulating the voltage and current within the circuit. To understand the switching action of an IGBT more clearly, we can look to its circuit diagram. A basic circuit diagram for the switching action of an IGBT consists of two inputs, two outputs, and three power sources.

The inputs are the gate terminal (G) and the emitter terminal (E). The gate terminal controls the electric field between the base and collector terminals, while the emitter terminal sends a signal to the base terminal, telling it when to activate and deactivate the electric field. The two outputs are the collector terminal (C) and the drain terminal (D). The collector terminal is responsible for collecting and releasing the electric field generated by the IGBT. The drain terminal is the output terminal responsible for transmitting the power generated by the IGBT. Finally, the three power sources are the bias voltage (VBE), bias resistor (RBB), and the gate voltage (VGE).

The role of the bias voltage is to set the base-emitter junction potential into the “ON” state, allowing the electric field to be generated. The role of the bias resistor is to set the base-collector junction potential into the “OFF” state, eliminating the electric field. Lastly, the role of the gate voltage is to start or stop the current flow and generate or remove the electric field.

Understanding the IGBT’s switching action through its circuit diagram allows us to see just how effective and powerful this component truly is. By understanding the role and function of each power source and terminal in the circuit, we can begin to unlock the full potential of the IGBT.

Insulated Gate Bipolar Transistor Igbt Circuits Tutorial