Power Electronics / Power Management


SMT DC-DC converters

25 July 2012 Power Electronics / Power Management

TDK-Lambda has released the iCF, iCG, iBF and iAF series of non-isolated SMT DC-DC converters that comply with the latest 2nd-generation DOSA standards for point-of-load (PoL) converters.

Key features of the new models include high power densities, no external tuning components (plug-and-play), low profiles, high efficiencies and land grid array (LGA) footprint. They are suitable for harsh telecom and broadcast mast-mounted applications, as well as industrial, test and measurement, routers and medical equipment.

The DOSA-2 product line is comprised of four series with output current/power ratings as follows, iCF (3 A/16,5 W), iCG (6 A/33 W), iBF (12 A/66 W) and iAF (20 A/110 W). All models operate from an input voltage range of 4,5 V to 14 V and feature adjustable output voltages from 0,7 V to 5,5 V with conversion efficiencies up to 94,5%.

The devices range in size from 12,2 x 12,2 x 4,45 mm to 33 x 13,46 x 7,75 mm. Optional EPC (edge plated castellation) layout is also available. Featuring fully optimised control loops, all models within the series provide excellent transient response without external loop-tuning components.

These PoL converters operate at a constant switching frequency of 600 kHz, which provides a low noise profile and facilitates easy EMI filtering. All models are safety approved to UL/CSA60950-1 and VDE CB scheme per IEC/EN60950-1.

Remote on/off, remote sense and power-good signal are standard. In addition, all models can operate in ambient temperatures from -40°C up to +115°C and include a 3-year warranty.

For more information contact Accutronics, +27 (0)11 781 2645, sales@accutronics.co.za, www.accutronics.co.za, Vepac Electronics, +27 (0)11 609 7122, sales@vepac.co.za, www.vepac.co.za



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