Invention Application
- Patent Title: ELECTROSTATIC DISCHARGE CIRCUIT AND METHOD THEREFOR
- Patent Title (中): 静电放电电路及其方法
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Application No.: PCT/US2004001225Application Date: 2004-01-16
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Publication No.: WO2004068543A3Publication Date: 2004-12-29
- Inventor: KHAZHINSKY MICHAEL G , MILLER JAMES W , STOCKINGER MICHAEL
- Applicant: FREESCALE SEMICONDUCTOR INC , KHAZHINSKY MICHAEL G , MILLER JAMES W , STOCKINGER MICHAEL
- Assignee: FREESCALE SEMICONDUCTOR INC,KHAZHINSKY MICHAEL G,MILLER JAMES W,STOCKINGER MICHAEL
- Current Assignee: FREESCALE SEMICONDUCTOR INC,KHAZHINSKY MICHAEL G,MILLER JAMES W,STOCKINGER MICHAEL
- Priority: US34881403 2003-01-22
- Main IPC: H01L
- IPC: H01L20060101 ; H01L23/62 ; H01L27/02 ; H01L27/04 ; H02H1/04 ; H02H3/00 ; H02H3/20 ; H02H3/22 ; H02H7/00 ; H02H9/00 ; H02H9/06
Abstract:
An ESD protection circuit (81) and a method for providing ESD protection is provided. In some embodiments, an N-channel transistor (24), which can be ESD damaged, is selectively turned on and made conducting. The purpose of turning on the N-channel transistor (24) is to maximize the Vt1 of the N-channel transistor (24). Vt1 is the drain-to-source voltage point at which the parasitic bipolar action of the N-channel transistor (24) first occurs. In some embodiments, the ESD protection circuit (81) includes a diode (64) which provides an additional current path from the I/O pad 31 to a first power supply node (76).
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