A 1 MHz Wide Bandgap Power Amplifier for High-Precision Applications

Abstract

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Output Spectrum Modeling of an H-Bridge Inverter With Dead-Time Based on Switching Mode Analysis

“…Some applications, such as lithography and magnetic resonance imaging (MRI), demand a high-precision and high-linearity [1]. Taking lithography for example, the position error of the moving stage is determined by the nonlinear error of the inverter, requiring less than -100 dB current distortion [2]. The high-linearity requirement is also desired in many other applications, and it raises the research question of what the origin is and what determines the magnitude of the inverter distortion.…”

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“…The sine-pulse-width-modulated (SPWM) H-bridge inverter is widely used in industry, such as lithography and magnetic resonance imaging (MRI). Those applications demand high precision and low distortion on the inverter output [1,2]. In practice, a certain dead-time should be applied to the H-bridge inverter to prevent short circuit.…”