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In this paper, a 5KW power factor corrected (PFC) converter for wide voltage input range is designed. The converter, which is applied to frequency-variable conversion air conditioner, adopts two phase interleaved boost converter. The circuit operates in current continuous conduction mode (CCM), and use voltage outer loop and current inner loop control strategy, i.e., current inner loop using average...
Abstract-The power electronic transformer is applied in various industrial fields instead of conventional transformer for its flexible voltage transfer ratio, high power density, low harmonic distortion and so on. In recent years, a variety of circuit topologies and control strategies of power electronic transformer used in different occasions are proposed. This paper present the analysis and compare...
A sub-1V CMOS DC-DC buck converter with 90% efficiency is presented in this paper. The proposed buck converter uses a digital error amplifier that can make the input voltage lower than other conventional buck converters. The buck converter uses voltage-mode control with pulse width modulation (PWM) techniques. The ramp generator of buck converter uses a Schmitt trigger circuit to replace the bias...
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