Patent ID: 8717782

Claim:
An LLC resonant power regulator system comprising: a transformer comprising a primary inductor and a secondary inductor; an input resonant tank comprising an input resonant capacitor, an input leakage inductor, and the primary inductor connected in series having a first resonant frequency defined by the leakage inductor and the resonant capacitor and having a second resonant frequency defined by the leakage inductor, a magnetizing inductor and the resonant capacitor; an input stage comprising a plurality of switches that are controlled in response to a respective plurality of switching signals sweeping frequency to supply an input resonant current to the input resonant tank, each of the respective plurality of switching signals having a fixed duty cycle and a sweeping frequency greater than at least one of the first or the second resonant frequency of the tank; and an output resonant tank comprising an output resonant capacitor, an output leakage inductor, and the secondary inductor connected in series, the output resonant tank being configured to generate an oscillating output resonant current in a load connected at an output.