On Sat, 07 Jul 2007 21:09:01 -0400, John Popelish
wrote:

John Larkin wrote:
I need to make -12 from +12, at maybe 500 mA, and all the obvious
inverting switching regulators suck for one reason or another.

The LM5112 is a 50-cent fet gate driver.

What does it do if the -12 volt output is overloaded?

Just makes the +12 supply current-limit, optimistically. A
hard-shorted -12 could fry the fet or the inductor, I suppose.

John