The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 05, 2013
Filed:
Mar. 14, 2011
Ankit Srivastava, San Diego, CA (US);
Eugene R. Worley, Irvine, CA (US);
Guoqing Miao, San Diego, CA (US);
Xiaohong Quan, San Diego, CA (US);
Ankit Srivastava, San Diego, CA (US);
Eugene R. Worley, Irvine, CA (US);
Guoqing Miao, San Diego, CA (US);
Xiaohong Quan, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Techniques for electrostatic discharge (ESD) protection for amplifiers and other circuitry employing charge pumps. In an exemplary embodiment, a Vneg switch coupling a second flying capacitor node to a negative output voltage node is closed in response to an ESD event being detected between a supply voltage node and the negative output voltage node. A ground switch coupling a ground node to the second flying capacitor node is closed in response to an ESD event being detected between the ground node and the negative output voltage node. The Vneg switch is further closed in response to the ESD event being detected between the ground node and the negative output voltage node. Further techniques are disclosed for providing on-chip snapback clamps at the output of a power amplifier coupled to the charge pump to protect against ESD events as defined by the standard IEC 61000-4-2.