Fabless power semiconductor company Helix Semiconductors announced sampling of the HS200 -- a DC-DC power IC that converts 48V to extremely low voltage. The new IC offers greater than 97 percent efficiency at 2.6W and greater than 90 percent efficiency at 15W -- making it the most energy-efficient-per-density solution available. The HS200 is the latest addition to the eMpower family, joining the HS100 -- an AC-DC chipset that Helix Semiconductors announced earlier this year.