Boundary-Mode Operation of the Boost Converter for Thermoelectric Generator Maximum Power Tracking

Performance-favorable and noteworthy characteristics of the Boost converter are reported, when the latter operates in Maximum Power Tracking (MPT) mode, while fed from a fixed internal resistance power source specifically a Thermo Electric Generator (TEG). It is found that if the converter is controlled with Pulse Frequency Modulation (PFM), for a specific value of inductance, the inductor current inherently remains on the boundary of continuity for the whole control range that is under all conditions, resulting in reduced switching losses.

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