Enhanced power density factors can be achieved in the new generation of power electronics by utilizing wide-bandgap semiconductor switching devices with higher switching speeds and lower losses. These characteristics make high-frequency switching (wide-bandgap-based) power converters superior to silicon-based converters in several respects, including better size, weight, efficiency, and power density than silicon-based converters. This makes wide-bandgap-based power converters ideal for applications where size and weight matter, such as in aerospace or consumer electronics. They are also well suited for applications that require high efficiency or high power density, such as renewable energy systems.In contrast to traditional converters, WBG power converters have significantly different requirements, making it harder to integrate components and sensors due to their tighter tolerances. Wideband current sensors are also necessary for diagnosing, monitoring, and controlling wide bandgap power converters. Integrated current sensors should also be considered when designing power converter layouts in terms of size and invasiveness, which are properties essential for the next generation of power converters, but cannot be achieved with commercial current sensors currently available. Among these properties are size, speed, noise immunity, accuracy, linearity, capacity, isolation, and non-invasiveness; due to size constraints and cost constraints, these converters are not equipped with current probes as well. Therefore, non-invasive, ultrafast, high-capacity, switch noise-immune sensors are required for wide-bandgap-based power electronics converters. These sensors should also have high accuracy and linearity while providing proper isolation between the power device and the sensing circuitry. The purpose of this thesis is to present comprehensive analyses of single-scheme and hybrid current sensors, with emphasis on their design and implementation, as well as their integration with power electronics systems for efficient sensing, where the results can be applied to improve accuracy, efficiency, and reliability of current sensing applications. The presented study illustrates that there is no specific method of current sensing that can combine all the required sensing factors at once and the results of multiple feasibility studies have been used to develop guidelines for designing current sensors that provide high-quality output and are readily applicable to the next generation of power converters based on their intended application. Frequency response verification using vector network analyzers and also different types of switching current waveform comparisons will prove the functionality of proposed light-size and low-cost sensing solutions.