Power electronic converters often malfunction because semiconductor power switches are prone to failure. This paper proposes a DC-DC converter that is capable of safe operation under switch failures. The proposed fault-tolerant (FT) technique is based on a reconfiguration strategy without requiring additional devices. Also

power flow is considered in the configuration design

resulting in a reduced amount of additional power to be processed

thus producing a more efficient converter structure. In addition

voltage stress across the active elements is low and always equals half of the output voltage. During switch-fault modes

the presented control system minimizes the transient impact of the faults to preserve normal operation of the converter. After various switch faults

the new configuration of the proposed converter supports operation with new characteristics. Additionally

a fuse-MOSFET pair is embedded to protect the FT DC-DC converter from excessive current that might damage circuit elements. The proposed converter in a continuous current mode (CCM) is evaluated

and its characteristics are discussed in detail. The proposed converter has been implemented

and necessary evaluations have been conducted to verify the theoretical study and feasibility of the control system.