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Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
1200 volt diodes are not Schottky. The highest voltage Schottky diodes I've seen were 200 volts and they had a huge reverse leakage current. Normally Schottky diodes are not rated over 100 volts.
"Since 2001 another important invention was presented by CREE (NC, USA): a silicon carbide (SiC) Schottky diode. SiC Schottky diodes have about 40 times lower reverse leakage current compared to silicon Schottky diodes. As of 2011, they are available from several manufacturers in variants up to 1700 V."
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
Hmm, I did some search and found this : You can see the SiC schottky diodes have a way too high forward voltage drop for this application. It also seems that SiC diodes are not very common, I have never seen or used one in real life.
Registered Member #4156
Joined: Fri Oct 21 2011, 05:19PM
Location:
Posts: 15
how about a slightly more beefy FET, its not much more to get something like a IRFP4668, much less RDS on, as low a 8 milliohm Vs about 55 for the 260's , you pay a bit of a penalty on input capacitance, but I don't see that being a big issue, all this is mute if you are getting a smoking deal for the 260's
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do I need high power schottky diodes for half bridge
