> AFAIK TECs require the smoothest current they can get, which is why > I > started looking into multi-phase designs. No. From prior discussions and spec sheets it's only "reasonably smooth" that's needed. Any normal SMPS will do. Russell -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist