Abstract
This paper deals with a buck-boost converter which depends upon a switching capacitor. A switching capacitor is used instead of a switching inductor because switching inductor provides higher efficiency over a large range of voltage values but it faces few problems practically limiting its performance. Numerous ways of boosting up the voltage is presented among which independent buck or boost along with buck boost conversion is discussed. A salient property of this is that there is a very small amount of current ripple irrespective of its working mode. Pulse width modulation (PWM) is used because this signal is produced to control power switches. The gain equations are obtained which defines the inductor and capacitor values to be used. The dc signal analysis is done. A decent power rated, 200kHz model with 100-V input DC source is used. It's experimental working along with its principles are shown.
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