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:
Jan. 30, 2001
Filed:
Mar. 11, 1999
Applicant:
Inventors:
Assignee:
Farady Technology Corp., Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05B 2/402 ; H02M 1/12 ;
U.S. Cl.
CPC ...
G05B 2/402 ; H02M 1/12 ;
Abstract
A digital programmable DC—DC voltage-down converter which can be used in a low voltage and low power digital circuit design is disclosed. The DC—DC voltage-down converter includes at least a digitally controlled oscillator (DCO), a pulse-width modulator (PWM), a gate driver, and a switching-type voltage-down converter. Duty cycle and operating frequency of the modulated signal are controlled by using two digital control signals. Furthermore, combining the pulse-width modulator and the digitally controlled oscillator (DCO), the duty cycle of the generated clock is more robustly stable for different frequencies during process variation.