Non-isolated high step-up DC-DC converter with minimum switch voltage stress
- Resource Type
- Conference
- Authors
- Spiazzi, Giorgio; Biadene, Davide; Marconi, Stefano; Bevilacqua, Andrea
- Source
- 2017 IEEE Southern Power Electronics Conference (SPEC) Power Electronics Conference (SPEC), 2017 IEEE Southern. :1-6 Dec, 2017
- Subject
- Aerospace
Bioengineering
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Computing and Processing
Engineered Materials, Dielectrics and Plasmas
Engineering Profession
Fields, Waves and Electromagnetics
General Topics for Engineers
Geoscience
Nuclear Engineering
Photonics and Electrooptics
Power, Energy and Industry Applications
Robotics and Control Systems
Signal Processing and Analysis
Transportation
Switches
Topology
Capacitors
Stress
Inductors
Charge pumps
Voltage control
high step-up DC-DC converters
boost converters
charge pump circuits
- Language
In this paper a new high step-up DC-DC converter topology is presented, featuring minimum switch voltage stress as well as a reduced energy in the magnetic device compared to a standard Boost converter. Starting from the basic voltage-doubler charge pump cell, a modification is proposed to make the flying capacitor voltages dependent on the converter duty-cycle. The use of an additional charge pump cell allows the elimination of any parasitic oscillation across the diodes. Suitable design criteria are proposed so as to achieve the desired converter operation mode, without need for any iterative process. Experimental results based on a 44 to 400 V-300 W prototype confirm the theoretical analysis and expectations.