No assignee for patent application serial number 769616 has been made.
News editors obtained the following quote from the background information supplied by the inventors: "The invention relates to a control circuit, and more particularly to a control circuit for resonant power converters.
"Resonant technology had been developed to achieve high efficiency and low noise power conversion. In recent development, power management is required to achieve better efficiency for both light load and heavy load of power converters. The present invention provides a digital control solution with an embedded microcontroller for resonant power converters to fit advanced power management needs."
As a supplement to the background information on this patent application, VerticalNews correspondents also obtained the inventors' summary information for this patent application: "An exemplary embodiment of a resonant control circuit for a power converter is provided. The resonant control circuit comprises a microcontroller, a switching-signal timer, a first PWM timer, and a signal detection circuit. The microcontroller has a memory circuit, and the memory circuit comprises a program memory and a data memory. The switching-signal timer generates a first switching signal coupled to switch a transformer. The first PWM timer generates a first PWM signal coupled to control a synchronous rectifying transistor of the power converter for synchronous rectifying. The signal detection circuit is coupled to an output of the power converter for generating a feedback data from a feedback signal. The microcontroller controls the first switching signal by programming the switching-signal timer in accordance with the feedback data. The microcontroller controls the first PWM signal by programming the PWM timer in response to the switching signal.
"A detailed description is given in the following embodiments with reference to the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
"The invention can be more fully understood by reading the subsequent detailed description and examples with references made to the accompanying drawings, wherein:
"FIG. 1 is an exemplary embodiment of a resonant power converter in accordance with the present invention;
"FIG. 2A shows waveforms of switching signals of the resonant power converter in FIG. 1;
"FIG. 2B shows waveforms of switching signals, a detection signal, and a PWM signal of the resonant power converter in FIG. 1;
"FIG. 3 is an exemplary embodiment of a controller of the resonant power converter in FIG. 1;
"FIG. 4 is an exemplary embodiment of a resonant-signal circuit of the controller in FIG. 3;
"FIG. 5 is an exemplary embodiment of a PWM circuit of the controller in FIG. 3;
"FIG. 6 is an exemplary embodiment of a PWM signal generator of the PWM circuit in FIG. 5;
"FIG. 7 is an exemplary embodiment of a protection circuit of the controller in FIG. 3;
"FIG. 8 is an exemplary embodiment of a signal detection circuit of the controller in FIG. 3; and
"FIG. 9 shows waveforms of switching signals and a switching current of the resonant power converter in FIG. 1."
For additional information on this patent application, see: YANG, Ta-Yung; WANG, Chou-Sheng; HSU, Chien-Tsun; YEH, Chung-Hui; HSU, Yi-Min; TSU, Pei-Sheng. Digital Control Circuit for Resonant Power Converters. U.S. Patent Application Serial Number 769616, filed
Keywords for this news article include: Patents, Electronics, Digital Control, Microcontroller.
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