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:
Mar. 31, 1998
Filed:
Sep. 24, 1996
Paul Sisson, Exeter, RI (US);
Gedaly Levin, Acton, MA (US);
Cherry Semiconductor Corporation, East Greenwich, RI (US);
Abstract
A switching voltage controller with improved rejection of supply voltage transients, wherein the switching of the voltage controller is controlled by sensing the current through an inductor to provide a current sense signal proportional to the sensed current and comparing the current sense signal voltage to the voltage of a peak signal and the voltage of a valley signal. An error amplifier provides a control signal proportional to the voltage difference between the output voltage of the voltage controller and a reference voltage source. The switching voltage controller provides for improved rejection of transients in the supply voltage by forcing the valley signal to be a first voltage differential .DELTA.' volts below the control signal and the peak signal to be a second voltage differential .DELTA.' volts above the control signal, where .DELTA.' and .DELTA.' are functions of the supply voltage to the voltage controller such that the rate of change of .DELTA.' and .DELTA.' with respect to the supply voltage are substantially equal to each other.