Design of a ZVS PWM DC–DC converter for high gain applications

Abstract

SUMMARYIn this paper, a pulse width modulation DC-DC converter with high step-up voltage gain is proposed. The proposed converter achieves high step-up voltage gain with appropriate duty ratio, coupled inductor, and voltage multiplier technique. The energy stored in the leakage inductor of the coupled inductor can be recycled in the proposed converter. Moreover, because both main and auxiliary switches can be turned on with zero-voltage switching, switching loss can be reduced by soft-switching technique. So the overall conversion efficiency is improved significantly. The theoretical steady-state analyses and the operating principles of the proposed converter are discussed in detail for both continuous conduction mode and discontinuous conduction mode. Finally, a laboratory prototype circuit of the proposed converter is implemented to verify the performance of the proposed converter.

Design and analysis of a high step‐up single‐switch coupled inductor DC‐DC converter with low‐voltage stress on components for PV power application

“…Some features of the proposed converter and similar converters presented in previous studies 11,22,23,[25][26][27][28][29]35,37 are indicated in Table 1. Some features of the proposed converter and similar converters presented in previous studies 11,22,23,[25][26][27][28][29]35,37 are indicated in Table 1.…”

“…Using the inductor volt-second balance law for the magnetizing inductance, L m , the following equation is achieved: Therefore, the voltage across capacitor C 1 is achieved as given in (11).…”

A new interleaved bidirectional dc/dc converter with zero voltage switching and high voltage gain: analyses, design and simulation

“…where I m21 is the current value of i Lm2 at the moment t 3 . The input current during this mode is obtained as i ℓ = i ℓ1 + i ℓ2 = i Lm1 + i Lm2 from (4) and (13). Based on the equivalent circuit and by applying KVL in phase 1, the voltage stress on switch S 1 can be calculated as follows:…”

A compact CMOS DC‐DC buck converter based on a novel complement value leaping PWM technique

“…Multi‐level supply voltage feasibility is strictly demanded for nowadays modern electronic devices which require different voltage levels within a unique system on chip (SoC), to achieve optimum overall performance depending on the frequency of operation, connected load, and required processing complexity . Hence designing low‐power high‐efficiency DC‐DC buck converter circuits which can produce the appropriate voltages for proper functionality of the electronic circuits and systems are severely indispensable .…”