Industry trends

As one of the core components of power conversion and control, the IGBT module is called the "CPU" of power electronic devices, and is the main force for high efficiency, energy saving and emission reduction. In the past, the manufacturers of IGBT modules were mainly concentrated in countries such as Japan and Europe. In recent years, the domestic substitution of IGBTs has entered a period of rapid growth, forming a virtuous iterative cycle process.

Today we will take a look at some things you must know about IGBT~

What is IGBT？

IGBT, also known as insulated gate bipolar transistor, is a composite full-control voltage-driven power semiconductor device composed of a bipolar transistor and an insulated gate field effect transistor. IGBT combines the advantages of low drive current of MOSFET and low on-resistance of triode. Compared with MOSFET, it is more difficult to manufacture, more complex in structure, and can withstand higher voltage.

What is the role of IGBT?

The main function of the IGBT is to convert the input direct current into a certain frequency of alternating current through pulse width modulation, or convert the alternating current into direct current, which is mainly used in frequency conversion inverter and other inverter circuits. The working performance of the IGBT is closely related to the overall performance of the power electronic device, and the driving circuit determines whether the IGBT module can work safely.

What are the advantages of IGBT in application?

IGBT can withstand high voltage above 1000V, has the characteristics of high input impedance, low conduction voltage drop, high-speed switching characteristics and low conduction state loss, etc., and occupies a dominant position in high-frequency and medium-power applications.

What are the types of IGBT?

IGBT is classified according to voltage level, covering 600-6500V; according to chip technology, it is divided into punch-through type (PT),

Non-punch-through type (NPT), field termination type (FS-NPT, LPT, SPT similar); divided into planar gate and trench gate according to gate structure; divided into single-tube discrete devices, modules and Power integration.

What is the main semiconductor material of IGBT?

Mainstream IGBT chips generally use silicon (Si) materials, but as the physical properties of silicon (Si) devices reach their limits, wide bandgap devices such as silicon carbide (SiC) have become an inevitable trend.

What parameters should be paid attention to in IGBT testing?

In recent years, the application of IGBT has become more and more extensive, so the test of IGBT has become particularly important. Next, let's learn more about the performance test of IGBT through a small video.