Pulse Coding Control Switching Converter with Adjustable Conversion Voltage Ratio Notch Frequency Generation in Noise Spectrum

This paper proposes an EMI noise spread spectrum technology with full-automatically generating notch characteristics at the received frequency Fin in the noise spectrum using the pulse coding control method in the buck-type switching converter. In this paper, a new notch generating technique with the voltage conversion ration D
_o
free is proposed. Moreover, the experimental results of the notch characteristics are reported. We previously reported the half-automatic notch generation method with the coding pulses using only F
_in
for the switching converter; however D
_o
was not selectable.