What is an IGBT transistor
Hello dear subscribers and visitors to my channel! We continue to get acquainted with elements of electronics and now our hero becomes the IGBT transistor, also known as insulated-gate bipolar transistor (IGBT). Let's find out what it is, what strengths and weaknesses you have the product and where it is used today. So, let's begin.
What is an IGBT (IGBT)
Thus, the IGBT - is to some extent unique device, in which the most successful way connected to field and bipolar transistors.
The principle of operation of the product lies in the following: As soon as a U «+» between the gate and the source, is the opening of a field effect transistor, in other words formed by N channel. As a result of this starts moving charged particles from a region in the P portion N and is, in turn, forcing open bipolar transistor and this provides the flow of electric current along the path emitter-collector.
Graphically, the transistor is as follows:
The main parameters of the product
The main parameters of these transistors include:
1. control voltage. The potential difference controlling shutter operation.
2. The maximum allowable current.
3. The breakdown voltage between the emitter and collector.
4. The current cut-off emitter-collector.
5. The saturation voltage.
6. The input and output capacitance.
7. Parasitic inductance of the plan.
8. The delay time of connection.
9. off delay time.
10. Internal resistance.
Advantages and features of IGBT transistors
1. Extremely simple parallel circuit.
2. Minimum losses.
3. High current density.
4. Increased resistance to short circuits.
5. The minimum on-state losses.
6. Functionality at high temperatures (operated at a temperature above 100 degrees Celsius).
7. Working with a high voltage (above 1 kV) and high capacity (more than 5 kW).
When the designed system with IGBT transistors, be sure to take into account the existing limitations on the maximum current. And for these purposes are the following possibilities: exact choice of the protection current range gate resistance, the use of circuitous possible commutation chains.
Application area
In most cases, IGBT is used in high-voltage networks up to 6.5 kV for the stable, and most importantly, safe operation of equipment in abnormal short circuit.
These properties allow the use of transistors in the variable frequency drives, inverters, regulators, current pulse type and even in the welding apparatus of the modern type.
In addition, the IGBTs are used in the control of electric drives systems, as well as trolleys.
Additionally insulated-gate bipolar transistor can be found in washing machines, dishwashers, inverter air conditioners and so on. N.
As you can see IGBT transistors are widely used in the world today. If you want to know how they can be checked using a conventional multimeter and a lot of other useful information, then sign up, put Like and make a repost!
Thank you for reading to the end!