FPGA Controller Design for High-Frequency LLC Resonant Converters

Park, Hwa-Pyeong; Kang, Yesung; Kang, Seokhyeong; Jung, Jee‐Hoon

doi:10.1541/ieejjia.9.523

Cited by 7 publications

(2 citation statements)

References 10 publications

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“…Si ultrafast recovery diodes (Si FRDs) can reduce power loss owing to their highly efficient switching performances [1,2]. Recently, they have been implemented in highfrequency applications such as switching power supplies [3][4][5], in which a reduction in power consumption is crucial. The introduction of lifetime killers [6] into semiconductor devices is required to reduce the switching time.…”

Section: Introductionmentioning

confidence: 99%

Silicon ultrafast recovery diode with leakage current reduced via the combined lifetime process of gold diffusion and electron-beam irradiation

Onishi,

Shirai

2023

Semicond. Sci. Technol.

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We investigated the reduction in the reverse-biased leakage current of Si ultrafast recovery diodes via a combined lifetime process involving Au diffusion and bulk electron-beam irradiation (EI). The leakage current of the combined-processed diode was significantly reduced to less than one-third of that of the diode processed solely with Au diffusion, maintaining a similar switching time of 32 ns. This reduction was not achievable with the sole use of EI. Deep-level transient spectroscopy revealed that the reduction in the leakage current was due to the coexistence of the deep trap level of Au (E c-0.51 eV) and the shallow trap level of the defects (E c-0.39 eV) generated via EI as lifetime killers. By combining the deep and shallow trap levels, the lifetime of the carriers generated in the depletion layer of the reverse-biased p-n junction becomes long and consequently, the leakage current is reduced. By maintaining the trap density ratio of defects to diffused Au above 0.28, the leakage current was reduced to less than one-third of that in the solely Au-diffused diode, while maintaining a similar switching time.

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Section: Introductionmentioning

confidence: 99%

Silicon ultrafast recovery diode with leakage current reduced via the combined lifetime process of gold diffusion and electron-beam irradiation

Onishi,

Shirai

2023

Semicond. Sci. Technol.

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“…This leads to an increase in the overall circuit cost, complexity, and problems in the electronics, such as negative bias temperature instability, hot carrier injection, etc. [11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Series RLC Resonant Circuit Used as Frequency Multiplier

et al. 2022

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Currently, the design of resonant power converters has only been developed while operating in the steady state, while the design operating in the transient stage has not been considered nor reported. This paper is interested in testing the performance of the resonant circuits operating in the transient stage and finding applications where benefits can be obtained from this form of operation. One application in which it is possible to obtain benefits from designing resonant circuits in the transient state is in the area of frequency multiplication. Usually, to achieve frequency multiplication, it is necessary to resort to complex methods and special devices that increase the complexity of the design and the total cost of the circuit. This paper evaluates the performance of a series RLC resonant circuit operating in the transient stage and with an underdamped response acting as a frequency multiplier, where the oscillation frequency of the current in the resonant tank is “n” number of times the switching frequency of the square voltage source at the input with a duty cycle of D = 50%. To validate the analysis, a circuit was designed to deliver an output power of 30 watts to a resistive load, where the switching frequency of the square voltage source at the input was 500 kHz. Since a multiplier value “n” equal to fifteen was chosen, the current in the resonant tank reached an oscillation frequency of 7.5 MHz. The design methodology was validated by simulations in SPICE, complying with the established design parameters.

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Efficiency Improvement of Computer Power Supply using Power Consumption Estimation from CPU Performance Monitors

Kawaguchi

2022

2022 IEEE Energy Conversion Congress and Exposition (ECCE)

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FPGA Controller Design for High-Frequency LLC Resonant Converters

Cited by 7 publications

References 10 publications

Silicon ultrafast recovery diode with leakage current reduced via the combined lifetime process of gold diffusion and electron-beam irradiation

Silicon ultrafast recovery diode with leakage current reduced via the combined lifetime process of gold diffusion and electron-beam irradiation

Series RLC Resonant Circuit Used as Frequency Multiplier

Efficiency Improvement of Computer Power Supply using Power Consumption Estimation from CPU Performance Monitors

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