Alison MacG Mar 22, 2012:

Does this help?/Is this the context? ON Semiconductor - EvalBoards
NCP3065SOBSTGEVB
NCP3065 BOOST DEMO BD
The NCP3065 switching regulator can be configured in Step-Down (Buck) and Step-Up (boost) topologies with a minimum number of external components.
http://www.onsemi.com/PowerSolutions/search.do?query="D... BD"&basic=yes¶m1=type¶m1_val=evalboard

and similar reference, showing BD = board
NCP3066SCBSTGEVB: Boost Demo Board
http://www.slideshare.net/element14/constant-current-switchi...

See also Mouser catalogue:
http://www.mouser.com/catalog/catalogUSD/645/481.pdf

Tony M Mar 22, 2012:

Context It's hard to be sure of anything at all without more context.

What sort of equipment is involved here, what would this be a 'demo' of? Please give us more context so we can help you better.