- #1
Jdo300
- 554
- 5
Hello All,
I'm working on a project that requires an isolated switching supply that will output 15V from a 9-18V input at up to 2W. I have found the perfect DC-DC converter module for the job from MicroPower Direct but I'm trying to see if it would be possible to build something with similar functionality using a simple 555 timer (or several of them). My understanding is that a buck-boost topology would probably work to get the wide volage input range tha I'm looking for and I'm hoping that I can leverage the 555 timer to my advantage (since I have a whole drawer full of them) to test out my prototype circuit before buying the 'nice' tidy-box module.
Does anyone know of any nifty circuits using 555 timers that can do a buck-boost setup? If not, does anyone know of some bare-bones, simple buck-boost controller ICs out there that don't have lots of external guts hanging out or come in a package that I'd have to view with an electron microscope to solder? I'm looking for the simplest solution just to see if it would be more cost-effective than buying the modules (which cost about $12-15 depending on where you get them from).
Thanks,
Jasson O
I'm working on a project that requires an isolated switching supply that will output 15V from a 9-18V input at up to 2W. I have found the perfect DC-DC converter module for the job from MicroPower Direct but I'm trying to see if it would be possible to build something with similar functionality using a simple 555 timer (or several of them). My understanding is that a buck-boost topology would probably work to get the wide volage input range tha I'm looking for and I'm hoping that I can leverage the 555 timer to my advantage (since I have a whole drawer full of them) to test out my prototype circuit before buying the 'nice' tidy-box module.
Does anyone know of any nifty circuits using 555 timers that can do a buck-boost setup? If not, does anyone know of some bare-bones, simple buck-boost controller ICs out there that don't have lots of external guts hanging out or come in a package that I'd have to view with an electron microscope to solder? I'm looking for the simplest solution just to see if it would be more cost-effective than buying the modules (which cost about $12-15 depending on where you get them from).
Thanks,
Jasson O