Prerelease - Samples available PHB Series of regulated and isolated half brick DC/DC converters range from 25W up to 350W with from 2:1 up to 8:1 inputs. Operating temperature from -40C up to 100C combined with conduction cooling enables the use of PHB converters in various industrial, transportation and telecom indoor and outdoor applications. PHB300-110S Series is 110VDC wide input version of the half brick offering especially usefull in railway and industrial 110V and 72V bus applications.