Artesyn Launches SMT12F Surface-Mount Converter
Artesyn Technologies Inc. (Boca Raton, FL), a leader in power conversion solutions and real-time subsystems for the communications industry, launched an ultra-compact, 12 A, non-isolated, point-of-load, dc-dc converter module, the new SMT12F surface-mount converter, which has a footprint of just 0.52 in x 0.63 in (13.5 mm x 16 mm), yielding a power density figure in excess of 389 W/in³ (23 W/cm³).
The low installed height of just 0.31 in (7.9 mm) minimizes disruption of airflow and makes it suitable for both forced-air and convection-cooled environments. The SMT12F converter accommodates a wide operational temperature range of -40 °C to +85 °C ambient, and is intended for use in communications applications like enterprise routers, storage switches and wireless base stations.
Based around a monolithic silicon controller, the SMT12F uses a synchronous buck regulator topology and a high 600 kHz switching frequency to achieve a typical conversion efficiency of 95 percent at 5 Vin, 3.3 Vout. This high efficiency results in a low internal power dissipation of less than 2 W at full output, and allows the module to be placed immediately adjacent to the load without raising any thermal design concerns. The converter module employs a single-board construction that simplifies thermal management and helps keep the weight down to 3 g.
The SMT12F POL converter has a wide input-voltage range of 3.0 V to 5.5 V, enabling it to accommodate a diversity of dc supply sources, including those used in systems employing intermediate bus architectures. The converter has a 12 A output capability and a wide output-voltage trim range of 0.9 V to 3.3 V. The SMT12F’s output voltage is set via a single resistor and requires no external reference when generating output voltages as low as 0.9 V. It also has a true monotonic start-up characteristic.
The modules are designed for surface-mounting, and are available in 40-piece tray carriers. Tape-and-reel options will be available for customers wishing to use standard placement automation. Sample quantities of the SMT12F POL converters are available for immediate delivery. In OEM quantities of 1,000, unit prices are $16.13. Standard lead-time is stock to 8 to 12 weeks.
