公开(公告)号：US09806521B2

公开(公告)日：2017-10-31

申请号：US14527205

申请日：2014-10-29

Applicant: Silicon Laboratories Inc.

Inventor： Michael G. Khazhinsky ,  Ravi K. Kummaraguntla

IPC: H02H9/04 ,  H02H3/20 ,  H02H3/02

CPC classification number: H02H9/046 ,  H02H3/02 ,  H02H3/202 ,  H02H9/04

Abstract: A balun includes an input coil and an output coil with first and second outputs that vary during normal operation. The output coil has a center point connection that remains substantially constant during normal operation. An ESD circuit provides a low impedance path between the center point connection and chip ground when the voltage at the center point connection is above a first threshold voltage or below a second threshold voltage and isolates the center point connection from chip ground otherwise. Another ESD protection circuit provides ESD protection for other input or output terminals of the integrated circuit by selectively coupling the other input or output terminals to chip ground. Thus, a charge that builds up between one of the balun outputs and another terminal on the integrated circuit can be safely dissipated.

公开(公告)号：US20160126725A1

公开(公告)日：2016-05-05

申请号：US14527205

申请日：2014-10-29

Applicant: Silicon Laboratories Inc.

Inventor： Michael G. Khazhinsky ,  Ravi K. Kummaraguntla

IPC: H02H9/04

CPC classification number: H02H9/046 ,  H02H3/02 ,  H02H3/202 ,  H02H9/04

Abstract: A balun includes an input coil and an output coil with first and second outputs that vary during normal operation. The output coil has a center point connection that remains substantially constant during normal operation. An ESD circuit provides a low impedance path between the center point connection and chip ground when the voltage at the center point connection is above a first threshold voltage or below a second threshold voltage and isolates the center point connection from chip ground otherwise. Another ESD protection circuit provides ESD protection for other input or output terminals of the integrated circuit by selectively coupling the other input or output terminals to chip ground. Thus, a charge that builds up between one of the balun outputs and another terminal on the integrated circuit can be safely dissipated.

Abstract translation: 平衡 - 不平衡转换器包括输入线圈和输出线圈，其具有在正常操作期间变化的第一和第二输出。 输出线圈具有在正常操作期间基本保持恒定的中心点连接。 当中心点连接处的电压高于第一阈值电压或低于第二阈值电压时，ESD电路在中心点连接和芯片接地之间提供低阻抗路径，否则将中心点连接与芯片接地隔离。 另一个ESD保护电路通过选择性地将其他输入或输出端子耦合到芯片地来为集成电路的其他输入或输出端子提供ESD保护。 因此，可以安全地耗散在一个平衡 - 不平衡变换器输出和集成电路上的另一个端子之间建立的电荷。