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:
Feb. 19, 2002
Filed:
Dec. 11, 2000
Pallab Midya, Schaumburg, IL (US);
Lawrence E. Connell, Naperville, IL (US);
Kenneth R. Haddad, Arlington Heights, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A buck or boost (BOB) power converter circuit. A buck converter is cascaded with a boost converter to form a buck or boost circuit ( ). The BOB converter is controlled by a controller ( ) such that only the buck or boost converter is operating at any given time. A reference signal V can be applied to the controller ( ) such that the output voltage from the converter closely tracks the reference signal. Positive and negative ramp signals are generated and an error feedback signal is compared with the ramp signals to control the output in accord with V . This is useful in application of the output voltage as the power supply to an RF Power Amplifier ( ) so that the reference signal can represent the envelope of a signal to be transmitted and the RF PA ( ) can operate at high efficiency.