I am looking for a boost dc to dc converter for the car, hardwired and multi
voltage 12v to 20 at least 120 w min, better more .... a good quality
unit, seen some cheap units like the Bixnet but want heavier duty.

 

You could BUILD a good one, with an LT1680 and about $20 to $30 of other components, for up to about 130 Watts at 20V output.

- Tom Gootee

http://www.fullnet.com/~tomg/index.html