Abstract
AbstractWith a view to high‐speed operation of a power clock, a power supply circuit with a high cut filter is proposed. The harmonic noise generated by the nonlinearity of the regulator distorts the sinusoidal current as the clock speed is increased and hence the duty factor is degraded. Hence, it is important to eliminate this noise. The filter has a function to pass the fundamental sinusoidal wave but stop the harmonic noise generated at the regulator. First, the determination of filter parameters is described. It is demonstrated by a computer simulation that the filter is extremely effective at a high frequency. Next, a three‐dimensional high‐density model has been fabricated and the output current waveform of the regulator at 400 MHz (machine cycle time of 1.25 ns) has been measured. By means of this measurement, the validity of the approach is demonstrated.
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