公开(公告)号：US10461529B2

公开(公告)日：2019-10-29

申请号：US15079554

申请日：2016-03-24

Applicant: RF Micro Devices, Inc.

Inventor： Muhammad Iqbal Chaudhry ,  Nathaniel Peachey

IPC: H02H9/04

Abstract: Aspects disclosed herein include trigger circuitry for electrostatic discharge (ESD) protection. In this regard, in one aspect, an ESD protection circuit is provided to protect an integrated circuit (IC) from an ESD event. Trigger circuitry, which includes a voltage divider for example, divides a voltage spike between a supply rail and a ground rail to provide a trigger voltage. An ESD clamping circuitry is activated to discharge the voltage spike when the trigger voltage is determined to exceed an ESD threshold voltage, thus protecting the IC from being damaged by the voltage spike. By activating the ESD clamping circuitry based on the trigger voltage divided from the voltage spike, it is possible to adapt the ESD protection circuit to provide ESD protection based on different ESD threshold voltages, thus making it possible to deploy the ESD protection circuit on ICs having different ESD protection requirements.

公开(公告)号：US20160352098A1

公开(公告)日：2016-12-01

申请号：US15079554

申请日：2016-03-24

Applicant: RF Micro Devices, Inc.

Inventor： Muhammad Iqbal Chaudhry ,  Nathaniel Peachey

IPC: H02H9/04

CPC classification number: H02H9/046

Abstract: Aspects disclosed herein include trigger circuitry for electrostatic discharge (ESD) protection. In this regard, in one aspect, an ESD protection circuit is provided to protect an integrated circuit (IC) from an ESD event. Trigger circuitry, which includes a voltage divider for example, divides a voltage spike between a supply rail and a ground rail to provide a trigger voltage. An ESD clamping circuitry is activated to discharge the voltage spike when the trigger voltage is determined to exceed an ESD threshold voltage, thus protecting the IC from being damaged by the voltage spike. By activating the ESD clamping circuitry based on the trigger voltage divided from the voltage spike, it is possible to adapt the ESD protection circuit to provide ESD protection based on different ESD threshold voltages, thus making it possible to deploy the ESD protection circuit on ICs having different ESD protection requirements.

Abstract translation: 本文公开的方面包括用于静电放电（ESD）保护的触发电路。 在这方面，在一个方面，提供ESD保护电路以保护集成电路（IC）免受ESD事件的影响。 例如，包括分压器的触发电路在电源轨和接地轨之间划分电压尖峰以提供触发电压。 当触发电压被确定为超过ESD阈值电压时，ESD钳位电路被激活以放电电压尖峰，从而保护IC免受电压尖峰损坏。 通过基于从电压尖峰开始的触发电压激活ESD钳位电路，可以使ESD保护电路适应于基于不同ESD阈值电压的ESD保护，从而可以将ESD保护电路部署在具有 不同的ESD保护要求。

公开(公告)号：US09997509B2

公开(公告)日：2018-06-12

申请号：US14687310

申请日：2015-04-15

Applicant: RF Micro Devices, Inc.

Inventor： Muhammad Iqbal Chaudhry ,  Nathaniel Peachey

IPC: H02H9/00 ,  H01L27/02

CPC classification number: H01L27/0251 ,  H01L27/0259

Abstract: Aspects disclosed in the detailed description include an electrostatic discharge (ESD) protection circuit. In this regard, in one aspect, an ESD protection circuit is provided to protect an integrated circuit (IC) during fabrication and production. An ESD detection circuitry detects an ESD event by detecting a voltage spike between a supply rail and a ground rail exceeding an ESD threshold voltage. In response to detecting the ESD event, an ESD clamping circuitry is activated to discharge the ESD event, thus protecting the IC from being damaged by the ESD event. By detecting the ESD event based on the ESD threshold voltage, as opposed to detecting the ESD event based on rise time of the voltage spike, it is possible to prevent the ESD clamping circuitry from missing voltage spikes associated with a slow rise time or being falsely activated by a normal power-on voltage associated with a fast rise time.

公开(公告)号：US20150325568A1

公开(公告)日：2015-11-12

申请号：US14687310

申请日：2015-04-15

Applicant: RF Micro Devices, Inc.

Inventor： Muhammad Iqbal Chaudhry ,  Nathaniel Peachey

IPC: H01L27/02

CPC classification number: H01L27/0251 ,  H01L27/0259

Abstract: Aspects disclosed in the detailed description include an electrostatic discharge (ESD) protection circuit. In this regard, in one aspect, an ESD protection circuit is provided to protect an integrated circuit (IC) during fabrication and production. An ESD detection circuitry detects an ESD event by detecting a voltage spike between a supply rail and a ground rail exceeding an ESD threshold voltage. In response to detecting the ESD event, an ESD clamping circuitry is activated to discharge the ESD event, thus protecting the IC from being damaged by the ESD event. By detecting the ESD event based on the ESD threshold voltage, as opposed to detecting the ESD event based on rise time of the voltage spike, it is possible to prevent the ESD clamping circuitry from missing voltage spikes associated with a slow rise time or being falsely activated by a normal power-on voltage associated with a fast rise time.

Abstract translation: 在详细描述中公开的方面包括静电放电（ESD）保护电路。 在这方面，在一个方面，提供ESD保护电路以在制造和制造期间保护集成电路（IC）。 ESD检测电路通过检测超过ESD阈值电压的电源轨和接地轨之间的电压尖峰来检测ESD事件。 响应于检测到ESD事件，ESD钳位电路被激活以释放ESD事件，从而保护IC免受ESD事件的损害。 通过基于ESD阈值电压检测ESD事件，与基于电压尖峰的上升时间检测ESD事件相反，可以防止ESD钳位电路丢失与缓慢上升时间相关联的电压尖峰或错误地 由与快速上升时间相关联的正常上电电压激活。