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This paper proposes a new control strategy technique called voltage-mode variable frequency (VMVF) control for single-inductor dual-output (SIDO) switching converter to achieve fast transient response and small output cross-regulation. A SIDO buck converter operating in continuous conduction mode (CCM) is taken as an example to analyse the operation modals with different equivalent series resistances...
It is known that the ripple-based control of a switching dc–dc converter benefits from a faster transient response than a conventional pulse width modulation (PWM) control switching dc–dc converter. However, ripple-based control switching dc–dc converters may suffer from fast-scale oscillation. In order to achieve fast transient response and ensure the stable operation of a switching dc–dc converter...
A high efficiency high voltage step-up gain DC-DC converter is proposed and studied in this paper. The proposed converter consists of a boost converter cell and an isolated single-ended PWM resonant converter cell, with their outputs connected in series to achieve high voltage step-up gain. By using quasi-resonant technology, zero current switching (ZCS) for the diode on the secondary of transformer...
A novel two winding coupled-inductor step-up gain boost-flyback converter is proposed in this paper. The proposed converter consists of a boost cell and a flyback cell, with a two winding coupled-inductor to achieve high step-up voltage gain at reasonable duty ratio. The voltage gain of the proposed converter is improved with input-parallel output-series of two windings of coupled-inductor. The operating...
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