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We present the first systematic lifetime tests which show excellent long-term reliability for 600V GaN-on-Si power switches.High voltage accelerated life testing in the OFF-state yields a field related mean-time-to-failure (MTTF) greater than 3×108h for a 600V operating condition. High temperature accelerated testing in the ON-state gives an MTTF of about 6×108h at a 150°C use condition. High temperature...
An isolated bi-directional full-bridge soft-switching dc-dc converter with high conversion ratio, high output power, soft start-up and soft-switching capability for battery charging/discharging is proposed in this paper. The use of an active flyback and two passive capacitor-diode snubbers can alleviate the voltage spike caused by the current difference between the leakage inductance of the transformer...
The drastic reduction of carbon emission to combat global climate change cannot be realized without a significant contribution from the electricity sector. Renewable energy resources must take a bigger share in the generation mix, effective demand response must be widely implemented, and high-capacity energy storage systems must be developed. A smart grid is necessary to manage and control the increasingly...
The study aims to predict the life and assess the reliability of electronic packages subject to multiple drop-impacts. Engineers used to adopt mechanics analysis as well as a certain life prediction model to predict the impact life of the package, and it is usually a deterministic value. However, drop test results show that the impact life of the package is not a single deterministic value but scatters...
In this paper, a sequential color light emitting diode (LED) backlight driving system for liquid crystal display (LCD) panels is proposed. Due to improvement on luminous efficacy, long life and wide color gamut, LED has gradually substituted for cold cathode fluorescent lamp as backlight The proposed driving system adopts sequential color scanning scheme to improve light utilization efficiency by...
In this paper, a sequential color light emitting diode (LED) backlight driving system for liquid crystal display (LCD) panels is proposed. Due to improvement on luminous efficacy, long life and wide color gamut, LED has gradually substituted for cold cathode fluorescent lamp as backlight The proposed driving system adopts sequential color scanning scheme to improve light utilization efficiency by...
In fact, the title does not propagate the content of this paper. It should be changed to "ripple free converter for driving LED backlight of LCD TVs." Due to improvement on luminous efficacy, long life and wide color gamut, LED has gradually substituted for cold cathode fluorescent lamp as backlight. The proposed driving system adopts sequential color scanning scheme to improve light utilization...
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