A novel resonant gate driver for high frequency synchronous buck converters

Yao, Kaiwei; Lee, F.C.

doi:10.1109/63.988828

Cited by 106 publications

(3 citation statements)

References 8 publications

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“…Therefore, the core that satisfies conditions in (21) and (22) is selected. Thus, the core which has following parameters was selected according to (20); A e = 150 mm 2 , l e = 56.5 mm, and μ e = 229. Using this core, L 1 of 0.79 μH is obtained with N 2 of 12 turns.…”

Section: Design Example Of One-turn Transformermentioning

confidence: 99%

Experimental Verification of Self-Supplying Power Circuit using One-Turn Transformer for Gate Drive Unit

2019

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This paper proposes a power supply circuit for gate drive units (GDUs) that uses a one-turn transformer, which gives advantages in terms of cost and loss reduction. The structure of the proposed one-turn transformer consists of a primary winding in which the number of turns is one and a secondary winding in which there are multiple number of turns. The proposed one-turn transformer is connected in series with a switching device of the main circuit in order to obtain power for the GDUs. The proposed power supply circuit can be applied to all types of main circuit topologies such as a multilevel converter topology or matrix converters, in addition to a conventional six-arm inverter. In this paper, the design method of the one-turn transformer and its characteristics are described based on an equivalent circuit and fundamental experimental results with a step-down chopper. Besides, the proposed power supply circuit for GDUs is tested in a two-level three-phase inverter. Secondly, the obtained power for GDUs from the proposed one-turn transformer with three connection points is investigated by harmonics analysis from the viewpoint of core size and other parameters. Finally, experimental results confirm that the GDU in the two-level three-phase inverter with switching frequencies of 12.5 kHz and 16 kHz is operated by the proposed self-supplying gate power supply circuit without an external power source.

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Section: Design Example Of One-turn Transformermentioning

confidence: 99%

Experimental Verification of Self-Supplying Power Circuit using One-Turn Transformer for Gate Drive Unit

2019

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“…In the traditional square wave driving circuit, energy on capacitor Ciss dissipates at each switching cycle [13][14]. In resonant driven circuit, the loss is only on parasitic resistor Rg.…”

Section: Introductionmentioning

confidence: 99%

“…In this circuit, an extra inductor Lr is added, and switching driven voltage is changed to sinusoidal or approximately sinusoidal voltage. There will be a resonant between the inductor Lr and the parasitic capacitor Ciss, which means the capacitive energy and the resonant inductive energy could be converted to each other in the form of electric and magnetic fields to store energy and reduce energy loss.In the traditional square wave driving circuit, energy on capacitor Ciss dissipates at each switching cycle[13][14]. In resonant driven circuit, the loss is only on parasitic resistor Rg.…”

mentioning

confidence: 99%

Research on high frequency reliability of silicon carbide MOSFETs resonant circuit

Shan

2023

J. Phys.: Conf. Ser.

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Silicon carbide MOSFETs could process high power at high switching frequency with little loss. The driving circuit produce loss, which is proportional to the switching frequency. Resonant gate driving circuit, which has a inductor to produce resonant with a parasitic capacitor to recycle energy is used to reduce energy loss in the high frequency situation. Firstly, this paper introduces the simplest resonant gate driver. After that, three different types of resonant gate driver with their similar versions are introduced. In these optimized circuits, the third resonant gate driver (RGD3) is the simplest to control and has the lower energy loss, but the second resonant gate driver (RGD2) has faster switching speed and the first resonant gate driver (RGD1) provides more loops to energy feedback.

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A linearly adaptive gate drive technique for light‐load efficiency improvement of DC–DC converters

Liu

Chen

2008

Circuit Theory & Apps

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SUMMARYThis paper presents a linearly adaptive gate drive technique to improve the light-load efficiency of DC-DC converters. The optimal-driving voltages of the power MOSFETs for reducing gate-driving loss can be well modeled by a linear function of the load current. By scaling the gate drive voltage dynamically with respect to load current, the light-load efficiency can be enhanced. The experimental result shows that the proposed gate drive technique can attain about 9% incremental light-load efficiency enhancement.

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A novel resonant gate driver for high frequency synchronous buck converters

Cited by 106 publications

References 8 publications

Experimental Verification of Self-Supplying Power Circuit using One-Turn Transformer for Gate Drive Unit

Experimental Verification of Self-Supplying Power Circuit using One-Turn Transformer for Gate Drive Unit

Research on high frequency reliability of silicon carbide MOSFETs resonant circuit

A linearly adaptive gate drive technique for light‐load efficiency improvement of DC–DC converters

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