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:
Apr. 12, 2016
Filed:
Nov. 14, 2013
Microchip Technology Incorporated, Chandler, AZ (US);
Hartono Darmawaskita, Chandler, AZ (US);
Sean Stacy Steedman, Phoenix, AZ (US);
Cristian Nicolae Groza, Pascani, RO;
Marilena Mancioiu, Corabia, RO;
John Robert Charais, Phoenix, AZ (US);
Zeke Lundstrum, Chandler, AZ (US);
MICROCHIP TECHNOLOGY INCORPORATED, Chandler, AZ (US);
Abstract
A slope compensation module provides slope compensation of a switched-mode power supply using current mode control. The slope control unit comprises a capacitor coupled between an input and an output of the slope control unit, a switch for discharging the capacitor and a constant current source for charging the capacitor. Slope compensation parameters may be changed during operation with a programmable constant current source. The slope compensation module may also function as an analog sawtooth waveform frequency generator, and as an analog pulse width modulation (PWM) generator. Charging the capacitor generates a linearly decreasing (negative slope) ramp voltage for modulating a feedback error voltage into a slope compensated feedback error voltage. Capacitor charging may be controlled from a pulse width modulation signal. Opening of the switch may be programmably delayed, and a minimum closed time thereof may also be programmed during operation of the slope compensation module.