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:
Jul. 01, 2008
Filed:
Oct. 13, 2005
Edward Herbert, Canton, CT (US);
Edward Herbert, Canton, CT (US);
Other;
Abstract
In a fast power converter with distributed output capacitors with parasitic impedances between them, the settling time of the output voltage is too long, making voltage unsuitable as a control input. The charge on each of the distributed output capacitors can be measured, preferably differentially, in a summing network in which the conductance of each of the summing resistors is proportional to the capacitance of the capacitor with which it is associated. The charges can be summed as a total charge control input for the fast power converter. The total charge control is very sensitive to changes in the output current, and is insensitive to lags, ringing and/or oscillations of the voltages among the distributed capacitors. If the output capacitor of a VRM is small compared to the total capacitance, the impedance of its connector is largely mitigated.