Invention Grant
- Patent Title: Gate-coupled MOSFET ESD protection circuit
- Patent Title (中): 栅极耦合MOSFET ESD保护电路
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Application No.: US10320201Application Date: 2002-12-16
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Publication No.: US06919602B2Publication Date: 2005-07-19
- Inventor: Shi-Tron Lin , Wei-Fan Chen
- Applicant: Shi-Tron Lin , Wei-Fan Chen
- Applicant Address: TW Hsinchu
- Assignee: Winbond Electronics Corp.
- Current Assignee: Winbond Electronics Corp.
- Current Assignee Address: TW Hsinchu
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: TW91109035A 20020430
- Main IPC: H01L23/62
- IPC: H01L23/62 ; H01L27/02 ; H01L29/74 ; H02H9/00

Abstract:
A gate-coupled MOSFET ESD protection circuit. The circuit has a gate-node potential controlled by an inverter and a timing control circuit. Unlike current-shunting ESD clamping devices that turn the MOSFET fully on during an ESD event, a pull-down element is included to form a voltage divider like circuit, such that the gate-node potential is limited to around 1 to 2 volts during a positive ESD transient event. Unlike GCNMOS (Gate-Coupled NMOS), the invention has better control of the transient gate potential for more effective triggering of the NMOS into snapback during an ESD event.
Public/Granted literature
- US20030201457A1 Gate-coupled MOSFET ESD protection circuit Public/Granted day:2003-10-30
Information query
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