具有负栅极摆动能力的保护电路

本发明公开了一种具有负栅极摆动能力的保护电路。保护电路可以包括串联耦合在第一节点和第二节点之间的第一钳位子电路、第一开关子电路和第一电阻子电路。保护电路还可以包括串联耦合在第二节点和第一节点之间的第二钳位子电路、第二开关子电路和第二电阻子电路。第一和第二钳位子电路以及第一和第二电阻子电路可以被配置为偏置开关分流子电路。开关分流子电路可以被配置为响应于来自第一和第二钳位子电路以及指示过电压、静电放电(ESD)或类似事件的第一和第二电阻子电路的偏置电位将第一和第二节点短接在一起。第一和第二开关子电路可以被配置为防止同时发生电流路径通过第一和第二电阻子电路。 A protection circuit can include a first clamping sub-circuit, a first switching sub-circuit and a first resistive sub-circuit coupled in series between a first and second node. The protection circuit can also include a second clamping sub-circuit, a second switching sub-circuit and a second resistive sub-circuit coupled in series between the second and first nodes. The first and second clamping sub-circuits and the first and second resistive sub-circuits can be configured to bias a switching shunt sub-circuit. The switching shunt sub-circuit can be configured to short the first and second nodes together in response to a bias potential from the first and second clamping sub-circuits and the first and second resistive sub-circuits indi