Application of Wavelet Transformation for the Identification of High Frequency Spurious Signals in Step Down DC - DC Converter Circuits Experiencing Intermittent Chaotic Patterns

Intermittent chaotic phenomena can appear in a dc-dc step down converter when the later is coupled with spurious high frequency signals. It is therefore important to understand why and how these phenomena occur and what is their relationship with the frequency characterises of the spurious injected signals. This paper uses a fast wavelet transform to isolate the frequency of these signals even when the converter is in a chaotic or subharmonic mode of operation.