Hello,
I need to generate two separate DC level output voltages. One is 110 vdc and the second is 190 vdc. The inputfor the circuitry is a regulated 11+ vdc. In both cases, the output current required is estimated to be 2 amps maximum and is most likely much less, more like 500 to 750 mA. The separate outputs will be used to replace the loses in separate very high Q resonant tank circuits. If you have worked with high Q tank circuits, you will know that initially tank losses are "estimates".
I have become aware of the fact that the 34063's output will stop increasing at about 60 vdc, due to transistor breadkdown; and that leads me to believe that the 40210 will do the same but at a slightly higher level. But I have learned that the 34063, when connected to an externally connected high voltage transistor and other common components, can generate my required 110 vdc output; and thus also the higher 190 vdc voltage level with changes to circuit component values. I also have found that there is a website on the net (Google "F4LW") that features a 190 vdc power supply circuit using the 34063 and a power MOSFET, along with some other transistors and components. It's output level can supposedly be lowered to 170 vdc, but that is too high for filling the lower voltage requirement that I have.
I would like to transfer all of my endeavor to using the TPS40210 chip except for one fact -- it isn't available in a "pinned" configuration, and I don't know how to use it on my PCB boards construction methods where I have been using pinned chips and bases. Any help in this area will be greatly appreciated.
Because I work at my home, without the availability of either printed circuit boards or fancier soldering apparatus; I need a working schematic with all component values specified, of either the 34093 with it's associated external transistor and associated components in order to finish my prood -of-concept project at 110 vdc output (with a possible second schematic for a 190 vdc output level unit -- or both output levels), or a working schematic, again with all component values specified, of the 40210 with it's external MOSFET and associated components for both the 110 vdc and 190 vdc output levels. In both cases, if this has to be in two separate layouts -- so be it; but it would be outstanding if both output levels could be accomplished from a single layout. I know that the 40210 will give me much better efficiency plus many other benifits, and thus it will be used in the manufacturing of the project units. However, unless I can be shown a procedure that allows me to work with the 40210 at home for the proof of concept project, I will have to work with the 34063.
I'm a very good electrical builder, but I'm over my head and don't have the time to learn what is required to get these perimeters filled from a design point-of-view, so I'm asking for help. This is the last hurtle in an almost 30 year long R&D project that has huge remifications if I can get this proof-of-concept design fiinished. I graduated from Class "A" Electronics School, thanks to the US NAVY, but that was in the '50s. I started the project in the late '70s where the first MOSFET was the TO-3 / 5 amp unit and the drivers had to be designed and constructed from discrete components. There are areas in electronics that I haven't kept up to date in, and add the fact that I'm almost totally physically disabled, have Carpel Tunnel, I'm asking for help. I can be reached by phone at (206) 782-0856 at my home, or by my email at scotsman7@comcast.net, or through this forum.
Again, any help with either layout will be greatly appreciated.
Scott McKie
