Author

Jorge Perez-Martinez

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Open access 2026

Enhanced Analysis and Optimization of Active-Clamped Forward-Flyback for Highly-Efficient Step-Up Photovoltaic Systems

The Active-Clamped Forward-Flyback is a topology suitable for photovoltaic applications, since it offers high efficiency across wide input/output voltage and power ranges, zero-voltage switching (ZVS) on all the switches and zero-current switching (ZCS) on the secondary side devices, while allowing high power density d...

Jorge Perez-Martinez, Juan Cruz-Cozar, Cristina Martos-Contreras et al. · IEEE Open Journal of Power E... · 0 citations

Review Open access Sep 2026

Isolated AC–DC Converters for High-Density USB-PD Adapters: A Comparative Review of Topologies and Future Trends

The transition of the USB Power Delivery (USB-PD) standard from fixed 5–20 V profiles to the dynamic extended power range (EPR) of up to 48 V and 240 W has redefined the constraints of isolated AC–DC conversion for high-density adapters and chargers. Delivering high efficiency simultaneously at low (5 V) and high (28–4...

Noel Rodríguez, Diego P. Morales, Jorge Perez-Martinez et al. · Energies · 0 citations

Open access Nov 2026

Isolated and Regulated Ultra-Flat DC–DC Power Converter for Extremely Wide Input Voltage Range (15 V–150 V), High Gain and Demanding Dynamics

This article proposes an isolated ultra-flat DC–DC converter architecture capable of directly converting high-voltage distribution rails (15–150 V) into regulated sub-1 V outputs with extremely high voltage conversion ratio. The solution is based on a resonant single-transformer structure specifically designed to enabl...

Pablo Mazariegos, Javier Goicoechea, Cristina Martos-Contreras et al. · IEEE transactions on power e... · 0 citations