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This work presents a decentralized current sharing control technique for a modular power supply composed of n output parallel-connected DC-DC converters. Each converter is connected to the load through individual line resistance. A phase shifted PWM signal, whose phase is proportional to each converters measured output resistance, is used to control switch state, generating a small power flow at switching...
A buck-boost topology operating in discontinuous conduction mode (DCM) is used as an off line LED driver for lighting applications. Operating from a full wave rectified ac-voltage with minimum input capacitance, with a constant switching frequency and constant on-time, the utility current has near unity power factor. This LED driver is suitable for cost sensitive applications because this circuit...
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