Direct Power Converter -DPx- for High Gain and High Current Applications

被引：10

作者：

Cobos, Jose A. ^{[1
]}

Castro, Alejandro ^{[1
]}

Garcia-Lorenz, Oscar ^{[1
,2
]}

Cruz, Juan ^{[1
,2
]}

Cobos, Alvaro ^{[1
,3
]}

机构：

[1] Differential Power SL, Madrid 28042, Spain

[2] Infineon Technol, Neubiberg, Germany

[3] Ferrovial, Madrid, Spain

来源：

2022 IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION, APEC | 2022年

关键词：

DCx; high-current; synchronous rectification; Direct to chip converter;

D O I：

10.1109/APEC43599.2022.9773600

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Only one transformer and two power switches are needed to implement a DPx dc-dc converter with constant gain (DCx). Both primary and secondary switches are ON and OFF simultaneously, connecting input and output through the transformer. At turn on, the leakage inductance limits the current transition to its steady state within the switching cycle, where it stays for a duty cycle higher than 50% featuring low rms current in the power switches. During the OFF time the transformer is reset, by a resonance between magnetizing inductance and the capacitance (parasitic and added) in parallel with the switches. It features 1-cycle dynamics and no-load operation. Bi-directional power flow and multiple outputs are straightforward. Excellent performance is obtained for 48 to 4V and 12 to 1V dc-dc converters to supply high performance processors which may be extended to other gains as 48 to 1V, just changing the transformer turns ratio

引用

页码：1016 / 1022

页数：7

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