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:
Oct. 23, 2001
Filed:
Mar. 01, 2000
Eizo Fukui, Beppu, JP;
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A driving circuit and a charging pump booster circuit capable of reducing the power consumption and the noise generated during switching. Transistors Q,and Q,are controlled based on a control signal input into an input terminal T,, and a charge/discharge current is output to an output terminal T,. The base of a transistor Q,, having almost the same characteristics as those of the transistor Q,, is connected to the base of the transistor Q,in order to have the transistor Q,generate a current corresponding to the turning on/off of the transistor Q,, and the current from said transistor Q,is reflected toward a resistance element R,by means of a current mirror circuit comprising transistors Q,and Q,, so that base voltage of the transistor Q,can be set lower while the transistor Q,is on in order to hold the transistor Q,to the OFF status. As a result, leak-through current in the transistors Q,and Q,can be reduced and switching noises created by said leak-through current can be reduced.