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:
Apr. 17, 2012
Filed:
Jun. 22, 2009
Brian Dean Boling, Broomfield, CO (US);
Michael Ernest Dickeson, Westminster, CO (US);
David Michael Freson, Loveland, CO (US);
Tuan Van Tran, Brighton, CO (US);
Brian Dean Boling, Broomfield, CO (US);
Michael Ernest Dickeson, Westminster, CO (US);
David Michael Freson, Loveland, CO (US);
Tuan Van Tran, Brighton, CO (US);
Seagate Technology LLC, Cupertino, CA (US);
Abstract
A controller includes a hysteretic circuit that provides a first ON level pulse when a corresponding first negative regulated voltage rises above a respective first voltage threshold. Similarly, a second ON level pulse is provided when a corresponding second positive regulated voltage falls below a respective second voltage threshold. The hysteretic circuit provides an OFF level pulse when one of first and second switch currents increases above a current threshold. A switch control circuit receives the first and second ON level pulses and the OFF level pulse, and provides first and second switch control outputs to separately regulate the first and second regulated voltages.