Voltage regulators (was Nerding out with termcap) - test-drb@ccmp.vtda.org

23 Aug 2005

...
  I imagine it's tricky to get 12V out of 11V (say)
whilst able
 to deliver enough current to keep a disk spinning (say). Of
 course I'm sure it's been done, I've just not seen published
 details of schematics etc. anywhere before! 
The topology you're looking for is SEPIC, single-ended primary
inductance converter. With a SEPIC convertor the input voltage
range can overlap the output voltage.

Cheers,

Lee.

.

___________________________________________________________ 
To help you stay safe and secure online, we've developed the all new Yahoo! Security
Centre. http://uk.security.yahoo.com