| 摘要 |
A resonant inverter is provided to suppress a variation in an output frequency of a CCO(Current-Controlled Oscillator) by supplying a constant input signal irrespective of a variation in a current flowing through an external resistor. First and second drivers(250,260) drive first and second switching elements, respectively. A dead time generator(240) generates first and second driving signals for the first and second drivers, respectively. A CCO(230) applies an output clock having a frequency, which is determined by a first input current, to the dead time generator. A current mirror(220) applies the first current, which is proportional to a second current flowing through an external resistor, to the CCO and includes a track/hold circuit. The current mirror applies the second current to the CCO while the output signal is switched between the first and second switching elements. A controller(280) receives the first and second driving signals and generates a control signal for the track/hold circuit. |
