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I'm interested in implementing the circuit in the paper Robust, low-cost, auditable random number generation for embedded system security on a breadboard, so I can't easily use the same boost converter (TPS61041, which only comes in SMD form). I would also like to modify the circuit to run continuously rather than the alternating charge/generate cycles used in the paper.

After looking around, I'm having difficulty finding a comparable breadboard-friendly converter than can match my requirements. I could build my own charge pump using the Dickson topology to avoid having to generate AC, I could build an inverter-transformer-rectifier circuit to step it up, there may be some IC in DIP form that I just having come across yet, or there may be some better method I just haven't thought of.

How can I best achieve this 1.5V DC to 18V DC at 25mA voltage conversion in a breadboard-friendly fashion?

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    \$\begingroup\$ Some people out there offer adapters from SMD to DIP, in that way you can solder your SMD chip to the adapter and use it at the breadboard - For example digikey.com/products/en/prototyping-products/… or just Google 'SMD to DIP adapter' \$\endgroup\$ – Claudio Avi Chami Feb 1 '17 at 16:58
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    \$\begingroup\$ mouser.com/Semiconductors/Power-Management-ICs/… try these. Also, search for PCB breakout boards which are real handy for breadboard and SMD connections. \$\endgroup\$ – Umar Feb 1 '17 at 17:03
  • \$\begingroup\$ Use perf-board with plated through-holes for proto-typing. Those white breadboard things designed for 0.1" DIP packages are just junk. You can get perf-board with either 0.1" or 2mm spacing. And probably other spacing as well. You can usually find a way to solder SMT components to perf-board. \$\endgroup\$ – mkeith Feb 1 '17 at 19:44
  • \$\begingroup\$ I appreciate the suggestions, but various circumstances mean that solder-free prototypes are infinitely simpler and faster to assembly, and suffice for my purposes. If I ever make anything worthwhile, I'll explore perfboard and/or board design at that time. \$\endgroup\$ – Extrarius Feb 2 '17 at 0:19
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    \$\begingroup\$ Try searching for SIP power supplies on digikey or similar. It will make your life much easier. \$\endgroup\$ – mkeith Feb 3 '17 at 5:23

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