Effect of Hydrogen Molecule Release on NBTI by Low-Temperature Pre-Treatment in P-Channel Power VDMOS Transistors

Liu, Fengkai; Zhu, Cuancuan; Liu, Zhongli; Yang, Jianqun; Wei, Yadong; Zhang, Yubao; Li, Xingji

doi:10.1109/tdmr.2024.3365960

Cited by 2 publications

(1 citation statement)

References 39 publications

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“…Series-parallel PSFB converters are usually driven in a synchronous interleaved manner and have the common advantages of both conventional PSFB converters and seriesparallel combination converters, making them widely used in areas such as energy storage, renewable power generation, and high-voltage pulse generators [19][20][21]. Also using vertical-double-diffused metal-oxide-semiconductor field-effect transistor power devices on the primary side makes the series-parallel PSFB converter more attractive [22,23]. However, each converter submodule in a series-parallel PSFB converter still suffers from the problems of a conventional PSFB converter, which also limits its use to some extent [24].…”

Section: Introductionmentioning

confidence: 99%

Novel Series-Parallel Phase-Shifted Full-Bridge Converters with Auxiliary LC Networks to Achieve Wide Lagging-Leg ZVS Range

Wang,

Sun,

Chen

et al. 2024

Electronics

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Under light load conditions, the phase-shifted full-bridge (PSFB) converter often has difficulty in realizing the zero-voltage switching (ZVS) of the lagging-leg by relying on the energy of its resonant inductor; however, for the series-parallel PSFB converter applied in high-power applications, the lagging-leg still has the problem of difficult realization of ZVS. Based on this, the paper analyzes the reasons why the series-parallel PSFB converter has difficulty in achieving ZVS for the lagging-leg under light and heavy loads. Under interleaved control, the ZVS of the lagging-leg over the full load range is realized by adding an auxiliary LC branch at the midpoint of the lagging-leg of both submodules. Based on the double-bridge input-parallel-output-series (IPOS) PSFB converter, analyzing the working principle of the circuit after adding the auxiliary LC branch and extending it to the series-parallel PSFB converter. The design requirements of the LC auxiliary branch of the dual-bridge series-parallel PSFB converter are given and the effects of the LC auxiliary branch on the module operating state and device stress are analyzed. On this basis, an extension is carried out to give the working principle and design method of the auxiliary LC branch of the N-bridge series-parallel PSFB converter. Finally, a 100 kW Matlab/Simulink simulation model verifies the superior performance of the proposed LC auxiliary branch to realize the lagging-leg ZVS of the series-parallel PSFB converter under light and heavy loads and achieves a 1.09% peak efficiency improvement at rated load.

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