The low power, 1W or less, DC/DC converters featured on this slide are single and dual output unregulated DC/DC converters with DC isolation less than or equal to 2kV. These converters can be considered “general purpose” unregulated converters, where the lower isolation ratings of 750V and 1kV is adequate. The isolation barrier here is not fundamentally designed to provide safety isolation, but rather simply functional isolation. In most applications, 500V of isolation is considered more than sufficient for such purposes. In addition, unless otherwise noted, all the models listed here operate over a wide temperature range of -40°C to 85°C and are manufactured using ceramic rather than FR4 PCBs. Also noted in the table are some models that offer dual bipolar output voltages of + and -, for example ±5V. All of the dual bipolar output series featured on this slide, with the exception of the HPR series, are capable of “output load sharing” or “unbalanced loading”. This means that all of the rated output power can be drawn from one output only. For example, for a 1W DC/DC converter, 0.75W could be drawn from the +5V output while 0.25W from the -5V output or vice versa. These converters are generally available with output voltages of 3.3V, 5,12V, 15V or 24V. As can be seen from the table, they are also offered in different pin configurations and package types. For example the NMR series is a 1W SIP7 package where the NME series is a 1W SIP4 package. Furthermore, the 1W SIP7 NMR and NMA series have recently been expanded with the addition of 15V input models.

