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Any load which is to be run using photovoltaic cell array and to efficiently utilize cell array we used Maximum Peak Power Tracker system in which DC-DC Boost Converter is integral part. And here we will illustrate a pulse width modulation soft-single-switched DC-DC converter with coupled inductors without high voltage and current stresses. These converters do not require any extra switch to achieve soft switching, which considerably simplifies the control circuit. In all converter family members, the switch is turned on under zero-current condition and is turned off at almost zero-voltage condition. From the proposed converter family, the boost topology is analysed, and its operating modes are explained. The presented experimental results of a prototype boost converter confirm the theoretical analysis.