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. 07, 2014
Filed:
Dec. 24, 2009
José Barreiro Da Silva, Woburn, MA (US);
Rajul Ramesh Shah, Gilbert, AZ (US);
Patrick Stanley Riehl, Cambridge, MA (US);
José Barreiro da Silva, Woburn, MA (US);
Rajul Ramesh Shah, Gilbert, AZ (US);
Patrick Stanley Riehl, Cambridge, MA (US);
MediaTek Singapore Pte. Ltd., Singapore, SG;
Abstract
A DC-DC converter system having at least one DC-DC converter operating in either a PWM mode or a PFM mode is provided. The DC-DC converter system includes a state machine configured to control the switching between the PWM mode and PFM mode. The state machine determines whether an inductor current provided by the DC-DC converter reaches a first specified value for a selective number of clock cycles so switching between the PWM mode and PFM mode is to occur. A pulse generator circuit is connected to the state machine and being configured to provide the appropriate switching period for the PWM mode and the PFM mode at the time of switching. The pulse generator circuit is shared amongst the PWM mode or PFM mode and utilizes a master clock for its operations.