Class D synchronous rectifiers

Mikotajewski, M.

doi:10.1109/31.135741

Cited by 10 publications

(4 citation statements)

References 2 publications

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“…In this section, we consider the design of the resonant converter with the single class-E inverter and the class-D fullwave rectifier. Figure 1 shows a circuit topology of the resonant converter with the single class-E inverter [16]- [22] and class-D full-wave rectifier [13]- [15]. The center-tapped transformer connects the inverter and the rectifier with a coupling coefficient of k. In the class-E inverter, the source terminal of the MOSFET is connected to the ground.…”

Section: Descriptions Of Resonant Converter With Class-e Invertermentioning

confidence: 99%

“…The rectifier diodes work as the half-wave rectification in each of the positive or the negative cycle. The voltages across the diodes are converted into the DC voltage through the lowpass filter C f − R L [13]- [15]. Because the anode-to-cathode parasitic capacitance C Dj exists on the actual diode device, the diode voltage v CDj satisfies the class-E ZVS/ZDS conditions automatically at turn-off instant [15].…”

Section: A Circuit Topology and Fundamental Operationmentioning

confidence: 99%

“…With the appearances of SiC and GaN devices, it is expected to increase in the operating frequency range to a few megahertz ranges mainly. The LLC converter generally consists of the half or fullbridge inverter and full-wave rectifier, namely the class-D inverter [10]- [12], and the class-D rectifier [13]- [15]. The class-D inverter, however, has a difficulty of the driver design for the high-side switching devices at high frequencies, in particular.…”

Section: Introductionmentioning

confidence: 99%

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Novel Design Approach of Soft-Switching Resonant Converter With Performance Visualization Algorithm

et al. 2020

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This paper presents a new design approach for the soft-switching resonant converter with satisfying the multiple design conditions. As an example, the FM controlled class-E resonant converter is designed. By applying the class-E inverter at the inverter part, the resonant converter works with high efficiency at high frequencies. The class-E inverter has, however, problems, which are the high peak value of the switch voltage and the difficulty of the zero-voltage switching continuation against the load variations. Additionally, there is a restriction on the peak value of the transformer voltage. In the proposed design approach, we can find the proper component values, which satisfy the multiple constraint conditions simultaneously, by full-use of the numerical computations of the converter-characteristic visualization on the parameter space. From the quantitative agreements between the experimental results and numerical predictions, the validity and effectiveness of the proposed design approach were confirmed. INDEX TERMS Resonant converter, class-E inverter, push-pull class-E inverter, class-D full-wave rectifier, zero-voltage switching, frequency modulation control.

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Section: Descriptions Of Resonant Converter With Class-e Invertermentioning

confidence: 99%

Section: A Circuit Topology and Fundamental Operationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Novel Design Approach of Soft-Switching Resonant Converter With Performance Visualization Algorithm

et al. 2020

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“…In addition, the high-frequency operation causes the noise. To solve the efficiency and the noise problems in the diodes, Class D rectifiers [1]- [6], Class E rectifiers [5]- [33], and Class DE rectifiers [34]- [41] have been proposed. The features of Class D rectifiers, Class E rectifiers, and Class DE rectifiers are summarized in Table I. Class D voltage driven half wave rectifier [4]- [6] which is one of the Class D rectifiers, has the following features: the diodes turning on and off at ZVS (Zero Voltage Switching) and low dv/dt, and the low diode current stress which is no more than the output current.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Class DE Current Driven Low <inline-formula><tex-math>$di/dt$</tex-math></inline-formula> Rectifier

Minami

Koizumi

2015

IEEE Trans. Power Electron.

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Class DE current driven low di/dt rectifier satisfies Class E switching condition and low diode current stress which is no more than the output current. Thus, the switching loss is decreased extremely. In this paper, the Class DE current driven low di/dt rectifier is analyzed for any diode-ON-dutyratio. The initial phase angle of the input current, the current and voltage transfer functions, the normalized input resistance and inductance, the normalized diode voltage stress, and the power-output capability are obtained and clarified as functions of the diode on-duty ratio and those of R/wL. Moreover, the power conversion efficiency and the circuit design method are shown. The circuit performance has been confirmed by the simulation results and the experimental results. In the simulation and the experiment, the characteristics of the output voltage and the power conversion efficiency against the amplitude of the input current, the load resistance, and the operation frequency have been obtained. In addition, the relationship between the equations, simulation results, and experimental results have been obtained. Theoretical, simulation, and experimental results were in good agreement each other.Index Terms-Class DE current driven low di/dt rectifier, zero current switching (ZCS), zero current derivative switching (ZCDS).

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