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:
Nov. 17, 1998
Filed:
May. 30, 1996
Franki Ngai Poon, Chai Wan, HK;
Chi Kong Tse, Chai Wan, HK;
Other;
Abstract
The fast transient load corrector is a circuit that attaches to the output terminals of a switching converter. Requiring no feedback circuit that interacts with any control parameter of the switching regulator, the fast transient load corrector works independently to improve the transient response of any switching regulator. Effectively the fast transient load corrector combines with the actual load to form a slowly varying composite load which permits the switching converter to maintain a well regulated output voltage or a voltage of pre-defined waveform. The conceptual construction consists of a bi-directional controlled current source and either a voltage sensor or a current sensor. The voltage or current sensor measures the amount of load disturbance and triggers the bi-directional controlled current source to supply transient current to the load. The quantity to be sensed can be the output voltage, the rate of change of the output voltage, or the rate of change of the output current. A practical construction, in the case of voltage sensing, consists of a pair of comparators which determine the deviation of the output voltage from the nominal value and trigger the action of the bi-directional controlled current source to supply transient current to the load. A practical construction, in the case of current sensing, consists of a negative feedback operational amplifier which, with a first-order circuit and sensing resistor, limits the rate of change of the output current and triggers the action of the bi-directional controlled current source to supply transient current to the load.