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A zero-voltage switching (ZVS) and zero-current switching (ZCS) two-transformer full-bridge PWM converter using the output-voltage-doubler is proposed in this paper. It is based on the phase-shifted full-bridge with series-connected two transformers (TTFB) which act as an output inductor as well as a main transformer. The TTFB converter achieves ZVS for all the switches inherently even at a light...
We report a record high continuous wave (CW) output power of 250 mW for the 780 nm band AlGaAs laser. The selectively buried ridge (SBR) structure was used and each layer of the laser was designed to have the lowest defect density by using the deep level transient spectroscopy (DLTS) analyses. The laser operated at a peak wavelength of 783 nm with a threshold current of 38 mA. The stable fundamental...
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