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发明公开
CN103515944A 采用双通道技术的用于电源和地之间ESD保护的PowerClamp 失效 - 权利终止 转让

采用双通道技术的用于电源和地之间ESD保护的PowerClamp
摘要：
本发明涉及一种采用双通道技术的用于电源和地之间ESD保护的Power Clamp。采用的技术方案是：包括RC触发的检测电路，R1和C构成ESD监测电路，放在VDD和VSS之间，反相器Ⅰ放在RC监测电路之后，输入端和Filter节点相连，输出端和反相器Ⅱ相连，反相器Ⅱ的输出端和PMOS1的栅相连，NMOS1的栅接地，NMOS1的漏和PMOS1的漏相连然后接BIGFET的栅，BIGFET的栅同时通过一电阻R接地。本发明的新型Power Clamp采用双通道技术，RC时间常数仅仅需要10-50ns，可以大大减小Power Clamp的版图面积。
摘要（英）：

The invention relates to a Power Clamp for ESD protection between a power supply and the ground by adopting a dual-channel technology. The adopted technical scheme is that the Power Clamp comprises an RC-triggered detection circuit, wherein R1 and C form an ESD monitoring circuit placed between VDD and VSS, a phase inverter I is placed behind an RC monitoring circuit, the input end is connected with a Filter node, and the output end is connected with a phase inverter II. The output end of the phase inverter II is connected with the grid of a PMOS1, the grid of an NMOS1 is grounded, the leakage of the NMOS1 is connected with the leakage of the PMOS1 and then connected with the grid of a BIGFET, and the grid of the BIGFET is simultaneously grounded through a resistor R. The Power Clamp adopts the dual-channel technology, an RC time constant only needs 10-50ns, and the layout area of the Power Clamp can be greatly decreased.

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