Next generation DC switching regulators maximize economy and performance

13-07-2017 | CUI | Power

CUI has added four new series to its family of non-isolated DC switching regulators. The next generation VX78-500, VXO78-500, VX78-1000, and VXO78-1000 series are extremely efficient, typically up to 96%, and balance maximizing economy while delivering a high level of performance as a direct alternative to using linear regulators. Utilizing switching technology, the models are footprint compatible with TO-220 package LM78XX and LM79XX model regulators and unlike linear regulators, do not require a heat sink. This makes them ideal for use in portable devices, battery-fed equipment, and embedded designs where board space is at a premium and energy efficiency is a concern.

The encapsulated VX78 series and open frame VXO78 series, suited for positive or negative output applications, both offer 500mA and 1A output current options and have no-load input currents as low as 0.2mA. Packaged in an ultra-compact, three pin SIP footprint, the encapsulated models measure just 11.6mm x 7.55mm x 10.16mm, while the open frame models have even smaller dimensions of 10mm x 7.2mm x 11mm.

The 500mA series accept a wide range of input voltages up to 4.75VDC to 36VDC, while the 1A series accommodate input voltage ranges up to 6VDC to 36VDC. Nominal output voltages of 3.3, 5, 9, 12, or 15VDC, are also available depending upon the series. Operating temperatures for all models range from -40C up to +71C at full load, derating to 60% load at +85C.

These non-isolated DC-DC converters also feature low ripple and noise, continuous short circuit protection, and UL 60950-1 and CSA safety certifications, along with the CE mark. All models carry a minimum MTBF of 2,000,000 hours at +25C ambient, calculated per MIL-HDBK-217F.

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