公开(公告)号：US09042064B2

公开(公告)日：2015-05-26

申请号：US13645223

申请日：2012-10-04

Applicant: QUALCOMM Incorporated

Inventor： Ankit Srivastava ,  Eugene R Worley

IPC: H02H9/04 ,  H01L27/02

CPC classification number: H01L27/0285 ,  H02H9/046

Abstract: Electrostatic discharge protection for Class D power amplifiers is disclosed. In an exemplary embodiment, an apparatus includes an amplifier having an output transistor coupled to an interface pad, a snapback supply clamp coupled across first and second supplies of the amplifier and configured to provide a clamp voltage across the first and second supplies during ESD event; and a trigger circuit coupled to the output transistor, the trigger circuit configured to detect the clamp voltage and to enable the output transistor to provide a discharge path from the interface pad to the second supply when the clamp voltage is detected.

Abstract translation: 公开了D类功率放大器的静电放电保护。 在示例性实施例中，一种装置包括具有耦合到接口焊盘的输出晶体管的放大器，耦合在放大器的第一和第二电源上并被配置为在ESD事件期间在第一和第二电源上提供钳位电压的快速恢复电源钳位; 以及触发电路，其耦合到所述输出晶体管，所述触发电路被配置为检测所述钳位电压，并且使得所述输出晶体管能够在检测到所述钳位电压时提供从所述接口焊盘到所述第二电源的放电路径。

公开(公告)号：US20140098447A1

公开(公告)日：2014-04-10

申请号：US13645223

申请日：2012-10-04

Applicant: QUALCOMM INCORPORATED

Inventor： Ankit Srivastava ,  Eugene R Worley

IPC: H02H9/04

CPC classification number: H01L27/0285 ,  H02H9/046

Abstract: Electrostatic discharge protection for Class D power amplifiers is disclosed. In an exemplary embodiment, an apparatus includes an amplifier having an output transistor coupled to an interface pad, a snapback supply clamp coupled across first and second supplies of the amplifier and configured to provide a clamp voltage across the first and second supplies during ESD event; and a trigger circuit coupled to the output transistor, the trigger circuit configured to detect the clamp voltage and to enable the output transistor to provide a discharge path from the interface pad to the second supply when the clamp voltage is detected.

Abstract translation: 公开了D类功率放大器的静电放电保护。 在示例性实施例中，一种装置包括具有耦合到接口焊盘的输出晶体管的放大器，耦合在放大器的第一和第二电源上并被配置为在ESD事件期间在第一和第二电源上提供钳位电压的快速恢复电源钳位; 以及触发电路，其耦合到所述输出晶体管，所述触发电路被配置为检测所述钳位电压，并且使得所述输出晶体管能够在检测到所述钳位电压时提供从所述接口焊盘到所述第二电源的放电路径。