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. 15, 2016
Filed:
Jul. 28, 2014
Cirrus Logic, Inc., Austin, TX (US);
Siddharth Maru, Austin, TX (US);
John L. Melanson, Austin, TX (US);
Rahul Singh, Austin, TX (US);
Eric King, Dripping Springs, TX (US);
Thirumalai Rengachari, Austin, TX (US);
Ramin Zanbaghi, Austin, TX (US);
Arnab Kumar Dutta, Austin, TX (US);
CIRRUS LOGIC, INC., Austin, TX (US);
Abstract
A bipolar junction transistor (BJT) may be used in a power stage DC-to-DC converter, such as for LED-based light bulbs. The BJT may be switched on and off from a controller coupled to two terminals of the BJT. Through the two terminals, the control IC may dynamically adjust a reverse recovery time period of the BJT. The reverse recovery time period may be adjusted by changing an amount of base charge that accumulates on the BJT. Additional, the reverse recovery may be controlled through the use of a reverse base current source applied to the BJT after beginning switching off the BJT.