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:
Sep. 27, 2022
Filed:
Oct. 28, 2020
Renesas Electronics America Inc., Milpitas, CA (US);
Vinod Aravindakshan Lalithambika, Girton, GB;
Allan Warrington, Rochester, GB;
Vipul Raithatha, Northampton, GB;
RENESAS ELECTRONICS AMERICA INC., Milpitas, CA (US);
Abstract
A method of operating a hysteretic synthetic current-mode switching regulator is disclosed. In the switching regulator, PWM pulses (PWM) are generated by a PWM generator (; FIG.) in dependence upon a ramp voltage (VR) which oscillates between upper and lower window voltages (VW+, VW−). The ramp voltage depends on a control voltage (VC) which depends on current (IL) through an inductor (). The method comprise determining whether a period (T) equal to or greater than a given period (TREFRESH) has elapsed without a PWM pulse being generated, upon a positive determination, causing the ramp voltage to be pulled up to or above the upper window voltage (VW+) for a given duration (ΔT) and when said given duration has elapsed, causing the ramp voltage to decrease until a rising edge of a PWM pulse is generated.