Invention Grant
US07768034B2 Tapered voltage polysilicon diode electrostatic discharge circuit for power MOSFETs and ICs
有权
用于功率MOSFET和IC的锥形电压多晶硅二极管静电放电电路
- Patent Title: Tapered voltage polysilicon diode electrostatic discharge circuit for power MOSFETs and ICs
- Patent Title (中): 用于功率MOSFET和IC的锥形电压多晶硅二极管静电放电电路
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Application No.: US11865191Application Date: 2007-10-01
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Publication No.: US07768034B2Publication Date: 2010-08-03
- Inventor: Daniel S. Calafut , Hamza Yilmaz , Steven Sapp
- Applicant: Daniel S. Calafut , Hamza Yilmaz , Steven Sapp
- Applicant Address: US ME South Portland
- Assignee: Fairchild Semiconductor Corporation
- Current Assignee: Fairchild Semiconductor Corporation
- Current Assignee Address: US ME South Portland
- Agency: Hiscock & Barclay, LLP
- Agent Thomas R. FitzGerald, Esq.
- Main IPC: H01L23/62
- IPC: H01L23/62

Abstract:
An electrostatic discharge (ESD) protection network for power MOSFETs includes parallel branches, containing polysilicon zener diodes and resistors, used for protecting the gate from rupture caused by high voltages caused by ESD. The branches may have the same or independent paths for voltage to travel across from the gate region into the semiconductor substrate. Specifically, the secondary branch has a higher breakdown voltage than the primary branch so that the voltage is shared across the two branches of the protection network. The ESD protection network of the device provides a more effective design without increasing the space used on the die. The ESD protection network can also be used with other active and passive devices such as thyristors, insulated-gate bipolar transistors, and bipolar junction transistors.
Public/Granted literature
- US20080087963A1 TAPERED VOLTAGE POLYSILICON DIODE ELECTROSTATIC DISCHARGE CIRCUIT FOR POWER MOSFETS AND ICs Public/Granted day:2008-04-17
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