Design of a 1 MHz LLC resonant converter based on a DSP-driven SOI half-bridge power MOS module

Groot, Harmke de; Janssen, Éric; Pagano, R.; Schetters, K.

doi:10.1109/pesc.2006.1712126

Cited by 40 publications

(34 citation statements)

References 6 publications

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“…Dimming is one of the important design issues to control LED brightness through the current along with the current balancing function of an LED channel [3][7] [8]. Fig.…”

Section: Dimming Circuitmentioning

confidence: 99%

“…Such advantages enable a highly efficient operation over a wide input voltage range as a consequence of the very low switching losses found in zero voltage switching (ZVS) conditions. In addition, these converters are suitable for integration, since the two inductors required to form the LLC tank can be integrated into one magnetic core without the need for extra components [8]- [11]. The advantage of LLC resonant converters is that they can reduce the switching loss and noise since switching components are softly commutated based on the resonant technique.…”

Section: Introductionmentioning

confidence: 99%

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A Dual-Output Integrated LLC Resonant Controller and LED Driver IC with PLL-Based Automatic Duty Control

Kim¹,

Kim²,

Lee³

2012

Journal of Power Electronics

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This paper presents a secondary-side, dual-mode feedback LLC resonant controller IC with dynamic PWM dimming for LED backlight units. In order to reduce the cost, master and slave outputs can be generated simultaneously with a single LLC resonant core based on dual-mode feedback topologies. Pulse Frequency Modulation (PFM) and Pulse Width Modulation (PWM) schemes are used for the master stage and slave stage, respectively. In order to guarantee the correct dual feedback operation, Phased-Locked Loop (PLL)-based automatic duty control circuit is proposed in this paper. The chip is fabricated using 0.35 μm Bipolar-CMOS-DMOS (BCD) technology, and the die size is 2.5 mm × 2.5 mm. The frequency of the gate driver (GDA/GDB) in the clock generator ranges from 50 to 425 kHz. The current consumption of the LLC resonant controller IC is 40 mA for a 100 kHz operation frequency using a 15 V supply. The duty ratio of the slave stage can be controlled from 40% to 60% independent of the frequency of the master stage.

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“…Dimming is one of the important design issues to control LED brightness through the current along with the current balancing function of an LED channel [3][7] [8]. Fig.…”

Section: Dimming Circuitmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Dual-Output Integrated LLC Resonant Controller and LED Driver IC with PLL-Based Automatic Duty Control

Kim¹,

Kim²,

Lee³

2012

Journal of Power Electronics

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“…3F4-ferrite material, produced by Ferroxcube, appeared to be a good choice in achieving the lowest corelosses [10]. Furthermore, a whole range of core-types where subjected to 3 types of scenarios.…”

Section: Selecting the Correct Transformer Corementioning

confidence: 99%

Design, construction and control of a quasi-resonant SMPS working at 2 MHz.

Uytterhoeven¹,

Jacqmaer

Driesen

2008

2008 IEEE International Conference on Sustainable Energy Technologies

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Abstract-Switching Mode Power Supplies with higher switching frequencies are, in general, smaller in size for the same power rating. Resonant converters have an advantage over PWM-type converters because they use soft switching, reducing losses and increasing the energy efficiency of the power electronic circuit. In this paper, a converter is designed having a switching frequency more than 2 MHz. The power is regulated and varies between 15 and 50 W, at a constant output voltage of 15 V. An LLC-type topology is chosen as resonant tank, in which the parasitic transformer leakage inductance is efficiently employed. An experimental converter was built, handling 50 W at 1.4 MHz. The efficiency is up to 60 % at full load..

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“…The high frequency switching operation makes the size of passive components small, which increases the power density of the converter. In addition, comparing with conventional hard-switching converters and asymmetrical half-bridge converter, the LLC resonant converter has small switching and conduction losses by the soft switching and the symmetric operation [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Design Considerations of Resonant Network and Transformer Magnetics for High Frequency LLC Resonant Converter

Park¹,

Ryu²,

Han³

et al. 2016

Journal of Electrical Engineering and Technology

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-This paper proposes the design considerations of resonant network and transformer magnetics for 500 kHz high switching frequency LLC resonant converter. The high power density can be effectively achieved by adopting high switching frequency which allows small size passive components in the converter. The design methodology of magnetizing inductance is derived for zero voltage switching (ZVS) condition, and the design methodology of the transformer and output capacitance is derived to achieve high power density at high operating frequency. Moreover, the structure of transformer is analyzed to obtain the proper inductance value for high switching operation. To verify the proposed design methodology, simulation and experimental results will be presented including temperature of passive and active components, and power conversion efficiency to evaluate dominant power loss. In addition, the validity of magnetics design will be evaluated with operating waveforms of the prototype converter.

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Design of a 1 MHz LLC resonant converter based on a DSP-driven SOI half-bridge power MOS module

Cited by 40 publications

References 6 publications

A Dual-Output Integrated LLC Resonant Controller and LED Driver IC with PLL-Based Automatic Duty Control

A Dual-Output Integrated LLC Resonant Controller and LED Driver IC with PLL-Based Automatic Duty Control

Design, construction and control of a quasi-resonant SMPS working at 2 MHz.

Design Considerations of Resonant Network and Transformer Magnetics for High Frequency LLC Resonant Converter

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