| Electronics > Beginners |
| A niche chip (LT4320) for mains powered AC -> low volt DC "linear" based psu ? |
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| necessaryevil:
The LT4320 DIP version is available! I asked them about the DIP-version, it turned out that they simply forgot to set to flag the part as active! It's now on their website and it will be available on digikey soon. I made a 2 layer PCB design with the help of some people on a dutch forum. Should be able to handle 15 amps. I'll order a small batch on itead. |
| digsys:
--- Quote from: necessaryevil --- The LT4320 DIP version is available! ... --- End quote --- Well, that'll help with heat dissipation in the IC, and that slightly tricky thermal pad. --- Quote from: necessaryevil --- ... Should be able to handle 15 amps. ... --- End quote --- With the FETs I've tested, max 2.5mR RDSon, 15A is a piece of cake. 16-20A and you start to need to think about some heatsinking. They should be good to 30A. I've only done short bursts to that, and all looked OK. |
| peter.mitchell:
hey digsys, have you tried it above 600hz? |
| digsys:
--- Quote from: peter.mitchell --- hey digsys, have you tried it above 600hz? --- End quote --- Sorry no. I didn't buy the higher freq version, as I mainly work in 50-60Hz. But we do have some systems running 400Hz, so next test run. |
| peter.mitchell:
--- Quote from: digsys on January 11, 2014, 01:15:38 pm --- --- Quote from: peter.mitchell --- hey digsys, have you tried it above 600hz? --- End quote --- Sorry no. I didn't buy the higher freq version, as I mainly work in 50-60Hz. But we do have some systems running 400Hz, so next test run. --- End quote --- Ok, doesn't particularly matter if you buy the high spec or not, I am more interested in this things limits, i already know mosfets are good high current switches. :P |
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