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A new soft switching converter is presented for medium power applications. Two full-bridge converters are connected in series at high voltage side in order to limit the voltage stress of power switches at Vin/2. Therefore, power MOSFETs with 600V voltage rating can be adopted for 1200V input voltage applications. In order to balance two input split capacitor voltages in every switching cycle, two...
This paper presents a new zero voltage switching (ZVS) converter for medium power and high input voltage applications. Three three-level pulse-width modulation (PWM) circuits with the same power switches are adopted to clamp the voltage stress of MOSFETs at Vin/2 and to achieve load current sharing. Thus, the current stresses and power ratings of transformers and power semiconductors at the secondary...
This paper presents a soft switching DC/DC converter for renewable energy conversion applications. Phase-shifted full-bridge converter with a series resonant tank is adopted to achieve zero voltage switching (ZVS) turn-on for power switches and zero current switching (ZCS) for rectifier diodes within nearly entire load range. Thus the switching losses of power switches and reverse recovery current...
This study presents a new soft switching DC/DC converter with current double rectifier to achieve zero-voltage switching for all power switches under a wide range of load condition. Three three-level pulse-width modulation circuit cells sharing the same power switches are adopted in the proposed converter to reduce the voltage stress of each switch at Vin/2 and achieve load current sharing. Therefore...
This study presents a soft-switching converter without output inductor. The features of the proposed converter are zero-voltage switching (ZVS) for all power switches, load current sharing and high circuit efficiency. Full-bridge converter with phase-shift pulse-width modulation (PWM) is adopted to regulate the output voltage. Based on the resonant behaviour by the output capacitance of MOSFETs and...
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