Mesa-type reverse-blocking diode thyristor chip

Abstract

The invention discloses a mesa-type reverse-blocking diode thyristor chip. The mesa-type reverse-blocking diode thyristor chip comprises a P1 anode emitter region, an N1 long base region, a P2 short base region, and an N2 cathode emitter region, wherein the P1 anode emitter region is arranged on one side of the N1 long base region, and a first PN junction is formed; the P2 short base region is arranged on the other side of the N1 long base region, and a second PN junction is formed; the N2 cathode emitter region is also arranged on the P2 short base region, and a third PN junction is formed; the distance between the first PN junction and the second PN junction is 100 to 180mum; and the distance between the second PN junction and the third PN junction is 3 to 20mum. The mesa-type reverse-blocking diode thyristor chip provided by the invention can realize on-off state transfer in the forward direction, and can realize blocking state in the reverse direction, has the advantages of small trigger current, high switching speed, small holding current and simple manufacture process, and can be used in a one-way high-voltage trigger circuit.

Description

technical field [0001] The invention relates to a power semiconductor device, in particular to a diode thyristor chip. Background technique [0002] Bidirectional diode thyristor is a kind of two-terminal semiconductor switching element that is ubiquitous in the market. It has a four-junction five-layer structure, which can realize switching state conversion in a very short time, and has symmetrical electrical characteristics in the first and third quadrants. , Commonly used in high-pressure sodium vapor lamps, ignition systems, pulse generators and other circuits. Bidirectional diode thyristors have short-circuit points on each side due to their bidirectional symmetrical characteristics. If they are used in a circuit that only requires one-way triggering, the existence of short-circuit points will cause the device to have shortcomings such as slow switching speed and large trigger current. Contents of the invention [0003] The purpose of the present invention is to prov...

AI Technical Summary

Problems solved by technology

Bidirectional diode thyristor has a short circuit point on each side due to its bidirectional symmetry characteristics. If it is used in a circuit that only needs one-way triggering, the existence of the short circuit point makes the device have the disadvantages of slow switching speed and large trigger current.

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