Invention Grant
- Patent Title: ESD protection circuit for a switching power converter
- Patent Title (中): 用于开关电源转换器的ESD保护电路
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Application No.: US12573501Application Date: 2009-10-05
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Publication No.: US08345394B2Publication Date: 2013-01-01
- Inventor: James W. Zhao , Reed W. Adams , Kenji Tomiyoshi , Bin Shao , Atsushi Matamura , Yogesh Sharma , Todd Thomas
- Applicant: James W. Zhao , Reed W. Adams , Kenji Tomiyoshi , Bin Shao , Atsushi Matamura , Yogesh Sharma , Todd Thomas
- Applicant Address: US MA Norwood
- Assignee: Analog Devices, Inc.
- Current Assignee: Analog Devices, Inc.
- Current Assignee Address: US MA Norwood
- Agency: Koppel, Patrick, Heybl & Philpott
- Main IPC: H02H9/00
- IPC: H02H9/00

Abstract:
An ESD protection circuit for a switching power converter which includes a high-side switching element connected between a supply voltage and the switching node, and a low-side switching element connected between the switching node and a common node. A current conduction path couples an ESD event that occurs on the switching node to an ESD sense node, and an ESD sensing circuit coupled to the sense node generates a trigger signal when an ESD event is sensed. A first logic gate keeps the high-side switching element off when the trigger signal indicates the sensing of an ESD event, and a second logic gate causes the low-side switching element to turn on when an ESD event is sensed such that the low-side switching element provides a conductive discharge path between the switching node and common node.
Public/Granted literature
- US20110080678A1 ESD PROTECTION CIRCUIT FOR A SWITCHING POWER CONVERTER Public/Granted day:2011-04-07
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