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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