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:
Jun. 10, 2014
Filed:
May. 13, 2011
Ken Tran, North Chelmsford, MA (US);
Feng Tian, Salem, NH (US);
Xing Chen, Lexington, MA (US);
MKS Instruments, Inc., Andover, MA (US);
Abstract
A switching apparatus includes a first transistor, a second transistor, a first circuit module, a first current sensor and a control circuit. The first transistor includes first, second and third terminals. The first terminal of the first transistor is coupled to a first power terminal. The third terminal of the first transistor includes a gate or base of the first transistor. The second transistor includes first, second and third terminals. The first terminal of the second transistor is coupled to a second power terminal. The second terminal of the second transistor is coupled to the second terminal of the first transistor. The third terminal of the second transistor includes a gate or base of the second transistor. The first circuit module includes an inductor in parallel with a diode. The first circuit module is connected between the first terminal of the second transistor and the second power terminal.