Invention Grant
US07885047B2 Adaptive electrostatic discharge (ESD) protection of device interface for local interconnect network (LIN) bus and the like
有权
用于本地互联网络（LIN）总线的设备接口的自适应静电放电（ESD）保护等
- Patent Title: Adaptive electrostatic discharge (ESD) protection of device interface for local interconnect network (LIN) bus and the like
- Patent Title (中): 用于本地互联网络（LIN）总线的设备接口的自适应静电放电（ESD）保护等
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Application No.: US12174903Application Date: 2008-07-17
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Publication No.: US07885047B2Publication Date: 2011-02-08
- Inventor: Philippe Deval , Patrick Besseux , Randy Yach
- Applicant: Philippe Deval , Patrick Besseux , Randy Yach
- Applicant Address: US AZ Chandler
- Assignee: Microchip Technology Incorporated
- Current Assignee: Microchip Technology Incorporated
- Current Assignee Address: US AZ Chandler
- Agency: King & Spalding L.L.P.
- Main IPC: H02H9/00
- IPC: H02H9/00
Abstract:
Adaptive electrostatic discharge (ESD) protection of a device interface has very good ESD robustness when it is handled or when installed into or removed from a system. And has robust immunity to DPI, electromagnetic interference (EMI) and the like, when it is operational in a system. There is a significant capacitive coupling between the drain and gate of a ESD protection metal oxide semiconductor (MOS) device to enhance ESD protection and lower snap back voltage thereof whenever there is no (or a low level) DPI on the external connection to be protected. Whereupon when a significant DPI/EMI signal is detected on the external connection, the capacitive coupling between the drain and gate of the MOS ESD protection device is disconnected, bypassed or attenuated so that DPI/EMI immunity of the device is enhanced.
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