On 25/05/2011 13:56, Michael Watterson wrote: > On 25/05/2011 13:39, RussellMc wrote: >> > Adding 1 more bipolar will allow any desired gate drive voltage. > Sometimes you need a small buck inverter to get the Gate supply voltage > rail. Esp off 3.3V or 5V when driving FETs for very low on, or part of a > high power or high voltage buck. Buck inverter? Don't you mean a boost regulator? > LT1073 (1V to 5V supply) + coil, diode& cap. (or a single LM393 + low > voltage FET with 2V to 5V supply) will give up to +50V easily. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .