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Advantages of Switching DC Regulators An Introduction to the V78 Series Introduction Purpose To provide an overview of the V78 switching regulator series and it’s advantages Objectives Introduce the V78 switching regulator series and it’s available configurations Describe the V78’s key features and specifications Compare the V78’s performance vs. comparable L78 linear regulators Describe typical applications for the V78 series Content: 8 pages Learning Time: 5 minutes © 2012 CUI Inc The Need to Regulate Voltage In many applications the input voltage supply is unstable and can vary over a wide range A regulator is often needed to take this unstable voltage source and convert it to a stable voltage This has been achieved for many years using linear technology, a inexpensive, though highly inefficient method to convert and regulate voltage Using switching technology, CUI’s V78 series is able to achieve the same results in a much more efficient manner © 2012 CUI Inc V78 Switching Regulator Series High efficiency - up to 96% Compact, no need for a heat sink Wide input range - up to 6.5~32 Vdc Low ripple & noise - 25mV p-p typical Continuous short circuit protection (auto recovery) Thermal protection set at 150°C Pin compatible with 78XX linear regulators © 2012 CUI Inc Linear vs. Switching Regulators V78 switching regulators 78XX linear regulators Efficiency 84~96% 40~60% Heatsink needed No Yes Short circuit protection Yes No Over temp protection Yes No Negative conversion option Yes No © 2012 CUI Inc Positive to Negative Conversation Option © 2012 CUI Inc Applications The V78 series is perfect for applications where the following is a concern: High temperature Automotive electronics, railway, industrial sensing, outdoor security Power consumption Infrared temperature detectors, hand-held GPS, portable communication equipment Ripple & noise Electrocardiography, spectrum therapy, weak signal detection, processing devices Limited board space Handheld equipment, medical devices, remote sensing © 2012 CUI Inc Available Configurations Series Output (Vdc) Size (mm) Package type V78XX-500 3.3, 5, 6.5, 9, 12, 15 11.5 x 7.55 x 10.2 SIP V78XX-500-SMT 3.3, 5, 12, 15 15.24 x 8.5 x 7.0 SMT V78XX-1000 3.3, 5, 6.5, 9, 12, 15 Vertical orientation: 11.5 x 9.00 x 17.5 Right angle orientation: 11.5 x 17.5 x 9.00 SIP V78XX-1500 2.5, 3.3, 5, 6.5 Vertical orientation: 11.5 x 9.00 x 17.5 Right angle orientation: 11.5 x 17.5 x 9.00 SIP V78XX-2000 2.5, 3.3, 5, 6.5 Vertical orientation: 11.5 x 9.00 x 17.5 Right angle orientation: 11.5 x 17.5 x 9.00 SIP © 2012 CUI Inc Summary Voltage rails in many applications are often unstable and need to be regulated The V78 series holds numerous advantages over linear regulators thanks to the use of switching technology The V78 series is available now through Digi-Key © 2012 CUI Inc