Emerson Network Power Launches Bulk Front-End Power Supplies

Emerson Network Power has launched two bulk front-end power supplies for systems that use distributed power architectures. Rated at 1200 watts and 2000 watts respectively, the DS1200-3 and DS2000-3 power supplies generate a main payload output of 12 Vdc and an auxiliary output of 3.3 Vdc for powering standby circuitry. An alternative auxiliary output of 5 Vdc is optionally available. The DS1200-3 and DS2000-3 are intended primarily for use in rack-mounting server type applications, such as data centres. The power supplies use an advanced power conversion topology to maximize efficiency and have compact form factors; both models have a height of just 40 mm (1.6 inches). The DS1200-3 and DS2000-3 power supplies feature a wide 90 to 264 Vac input voltage range and employ active power factor correction to minimise input harmonic current distortion and to ensure compliance with the international EN61000-3-2 standard - they have a power factor of 0.99 typical.



The DS1200-3 can deliver up to 98.4 A from its main +12 Vdc payload output, and up to 6 A from its +3.3 Vdc auxiliary output. The supply has a 1U x 2U form factor - it measures 28.4 x 8.1 cm, with a height of 4.0 cm - and has a power density of more than 1.3 watts per cubic centimetre. When fed with a 180 to 264 Vac input, the DS1200-3 can achieve high - 91 percent typical - conversion efficiency at 50 percent full load. The DS2000-3 power supply is capable of delivering up to 164.2 A from its main +12 Vdc payload output, and up to 9 A from its auxiliary +3.3 Vdc output. The DS2000-3 has a 1U x 3U form factor--it measures 29.6 x 10.7 x 4.0 cm - and has a high power density in excess of 1.5 watts per cubic centimetre. When fed with a 180 to 264 Vac input, the power supply can achieve in excess of 92 percent efficiency between 50 percent and 75 percent full load. The sample quantities of DS1200-3 and DS2000-3 power supplies are available for immediate delivery. Standard lead-time is stock to 8 weeks.