Matrix Inductor With DC-Bias Effect Reduction Capability for GaN-Based DC-DC Boost Converter

Dung, Nguyen Anh; Chen, Cheng-Wei; Lai, Jih‐Sheng; Liu, Yuchen

doi:10.1109/tcsii.2019.2960759

Cited by 9 publications

(6 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to [27], since four phases are employed, the configuration of the inductor can be: (a) four single‐core inductors will introduce higher core loss and core volume; (b) two sets of two‐phase coupled inductors can reduce the core size with partial flux distribution. However, the inverse coupling will increase the switching frequency range even though it will help for the performance, especially in the wide range voltage applications.…”

Section: Matrix Inductor Investigationmentioning

confidence: 99%

“…In order to achieve ZVS for the main switches, the negative current I 0 should be enough to charge and discharge the parasitic capacitance of the MOSFETs. The ZVS condition can be defined according to [10, 27].

I_{0} > \frac{V_{normalin} - V_{normalout} (1 - \cos (ω_{normalo} \cdot t_{normald}))}{Z_{normalo} \sin (ω_{normalo} \cdot t_{normald})}

Z_{0} = \sqrt{\frac{L}{2 C_{OSS}}}

ω_{normalo} = \frac{1}{\sqrt{2 L C_{OSS}}}

where L is the inductance and C OSS is the parasitic capacitance of the MOSFET and t d is the dead‐time.…”

Section: Analysis Of Matrix Inductor For Dc‐dc Buck Convertermentioning

confidence: 99%

Section: Analysis Of Matrix Inductor For Dc-dc Buck Convertermentioning

confidence: 99%

“…Furthermore, the total core volume also increases which reduces the efficiency under light load condition. The matrix inductor has been proposed for flux sharing and flux cancellation [27]; thus, the inductor core loss is reduced significantly due to the reduction of DC-bias effect [24][25][26]. The synchronous operation of the four-phase matrix inductor has been employed for core loss reduction.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Four‐phase interleaved TCM DC‐DC buck converter with matrix inductor in battery charging application

Dung

Chen

Yang

et al. 2020

IET Power Electronics

Self Cite

View full text Add to dashboard Cite

In this paper, a 1-kW DC-DC buck converter with a four-phase interleaved matrix inductor is proposed for battery charging applications. It is well-known that the DC bias on the inductor will cause high core loss as it changes the B-H characteristic. Typically, the transient conduction mode employed in high voltage applications for zero-voltageswitching of devices would cause higher inductor current ripple. The conventional approach to reduce the effect of DC bias and inductor current ripple is employing multi-phases. However, the cost and size of the converter will increase significantly. This paper proposes the matrix inductor which has a small volume and reduces the effect of the DC bias by flux sharing and flux cancellation at the same time, results in low inductor core loss. With the interleaved operations the output current ripple can be lower which is suitable for battery charging application. Besides, the comparison of the synchronous and interleaved operation is presented. A 1-kW prototype is built and the experimental results show that the peak efficiency is 99.1% and 99.2% for synchronous and interleaved control, respectively. Additionally, the output current ripple of the interleaved operation is reduced by 85% in comparison with the synchronous operation.

show abstract

Section: Matrix Inductor Investigationmentioning

confidence: 99%

I_{0} > \frac{V_{normalin} - V_{normalout} (1 - \cos (ω_{normalo} \cdot t_{normald}))}{Z_{normalo} \sin (ω_{normalo} \cdot t_{normald})}

Z_{0} = \sqrt{\frac{L}{2 C_{OSS}}}

ω_{normalo} = \frac{1}{\sqrt{2 L C_{OSS}}}

where L is the inductance and C OSS is the parasitic capacitance of the MOSFET and t d is the dead‐time.…”

Section: Analysis Of Matrix Inductor For Dc‐dc Buck Convertermentioning

confidence: 99%

Section: Analysis Of Matrix Inductor For Dc-dc Buck Convertermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Four‐phase interleaved TCM DC‐DC buck converter with matrix inductor in battery charging application

Dung

Chen

Yang

et al. 2020

IET Power Electronics

Self Cite

View full text Add to dashboard Cite

show abstract

“…Hence, the 200 V EPC2034C 2 GaN device [54] would be used in the dc-dc converter. To prevent device damage caused by switching spikes, soft switching is a major concern, such as adopting critical conduction mode [117]. Moreover, matrix inductors [117] are to be considered for further size reduction.…”

Section: Hardware Implementation and Experimental Resultsmentioning

confidence: 99%

Modeling, design, and control of inductive power transfer systems

Chen¹

View full text Add to dashboard Cite

Magnetic Integration of Coupled-Inductor with Optimized Air-Gaps for A CRM Buck Converter

Ji,

Liu,

et al. 2023

2023 IEEE 6th International Electrical and Energy Conference (CIEEC)

View full text Add to dashboard Cite

Matrix Inductor With DC-Bias Effect Reduction Capability for GaN-Based DC-DC Boost Converter

Cited by 9 publications

References 20 publications

Four‐phase interleaved TCM DC‐DC buck converter with matrix inductor in battery charging application

Four‐phase interleaved TCM DC‐DC buck converter with matrix inductor in battery charging application

Modeling, design, and control of inductive power transfer systems

Magnetic Integration of Coupled-Inductor with Optimized Air-Gaps for A CRM Buck Converter

Contact Info

Product

Resources

About