Invention Application
- Patent Title: LATERAL INSULATED GATE BIPOLAR TRANSISTOR WITH LOW TURN-ON OVERSHOOT CURRENT
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Application No.: US17606216Application Date: 2020-03-31
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Publication No.: US20220157975A1Publication Date: 2022-05-19
- Inventor: Jing ZHU , Ankang LI , Long ZHANG , Weifeng SUN , Shengli LU , Longxing SHI
- Applicant: SOUTHEAST UNIVERSITY
- Applicant Address: CN Nanjing, Jiangsu
- Assignee: SOUTHEAST UNIVERSITY
- Current Assignee: SOUTHEAST UNIVERSITY
- Current Assignee Address: CN Nanjing, Jiangsu
- Priority: CN201910370872.X 20190505
- International Application: PCT/CN2020/082251 WO 20200331
- Main IPC: H01L29/739
- IPC: H01L29/739 ; H01L29/10

Abstract:
A lateral insulated gate bipolar transistor (IGBT) with a low turn-on overshoot current is provided to reduce a peak value of a current flowing through a device during turn-on of a second gate pulse while preventing a current capability and a withstand voltage capability from being degraded. The lateral IGBT includes: a buried oxygen arranged on a P-type substrate, an N-type drift region arranged on the buried oxygen, on which a P-type body region and an N-type buffer region are arranged, a P-type collector region arranged in the N-type buffer region, a field oxide layer arranged above the N-type drift region, a P-type well region arranged in the P-type body region, and a P-type emitter region and an emitter region arranged in the P-type well region, where inner boundaries of the foregoing 4 regions are synchronously recessed to form a pinch-off region. A gate oxide layer is arranged on a surface of the P-type body region, and a polysilicon gate is arranged on the gate oxide layer. The polysilicon gate includes a first gate located above the surface of the P-type body region and a second gate located above the pinch-off region and the N-type drift region. The first gate is connected to a first gate resistor, and the second gate is connected to a second gate resistor.
Public/Granted literature
- US11367785B2 Lateral insulated gate bipolar transistor with low turn-on overshoot current Public/Granted day:2022-06-21
Information query
IPC分类: