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krisi
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re: Japan invests in GaN power startup
krisi   10/10/2012 5:47:37 PM
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thank you @sranje for clarification...what is the "current collapse" phenomena? thermal runaway?

WelCommGreg
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re: Japan invests in GaN power startup
WelCommGreg   10/10/2012 5:35:31 PM
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Here is a link to a recent announcement by Transphorm about this. They are the first to attain JEDEC qualification for 600V transistor devices: http://bit.ly/PXKb5s

sranje
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re: Japan invests in GaN power startup
sranje   10/2/2012 2:30:46 PM
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Iniewski - these are Power GaN transistors, that is, not RF GaN devices (Eudyna/Fujitsu) - potentially a much bigger market with intense commercialization activities by compamies and countries worldwide. There is a race to solve (to a degree) the intrinsic phenomena known as the "current collapse"

sranje
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re: Japan invests in GaN power startup
sranje   10/2/2012 2:24:06 PM
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Thank you for the encouraging news. What type of products (devices and/or modules) are considered by this investment…..and in which timeframe? Re Transphorm and 600V devices - are these transistors or diodes? Transistors may be MUCH more difficult to make. Also are the 600V devices really GaN-on-Silicon or perhaps, as an intermittent step, SiC? Many thanks

old account Frank Eory
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re: Japan invests in GaN power startup
old account Frank Eory   10/1/2012 5:51:21 PM
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How much GaN does $35M buy these days? A few dozen wafers?

krisi
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re: Japan invests in GaN power startup
krisi   10/1/2012 5:36:56 PM
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$35M investment in GaN technology is substantial...I thought GaN was a fairly small niche market (less than $100M in revenue annually)



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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