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:
Dec. 03, 2019
Filed:
Nov. 29, 2018
Power Integrations, Inc., San Jose, CA (US);
Hartley Fred Horwitz, Ottawa, CA;
Steven Greig Porter, Nepean, CA;
Power Integrations, Inc., San Jose, CA (US);
Abstract
A controller for use in a power converter of a motor drive includes a control circuit configured to turn ON a high side switch by sinking a current of an ON signal. A high side signal interface circuit is coupled to receive the ON signal to generate a drive signal to control switching of the high side switch in a presence of a common mode signal caused by slewing at a half bridge node. The high side signal interface circuit includes a common mode cancellation circuit coupled to provide a common rejection signal to provide a cancellation or rejection of the common mode signal. A first current hysteresis comparator is coupled to receive a common mode rejection signal, a first current signal, and a fourth current signal, and generate a first output signal in a presence of a common mode voltage.