Power

18 to 60VDC Input Qtr-Bricks reduce inventory requirements

23rd March 2006
ES Admin

Power-One has introduced its QMS Series of 1/4-brick dc-dc converters. Three new single-output models provide 3.3VDC @ 25A, 5VDC @ 14A, and 12VDC @ 6.75A. Ultra-wide 18 to 60VDC input range facilitates operation from 24V and 48V; eliminating the need for multiple host-system circuit-pack designs, and reducing the number of brick part numbers in inventory, in applications such as wireless base stations.

Efficiencies exceeding 90%, and advanced thermal management techniques, facilitate impressive elevated-temperature performance; for example, with 24Vin and 3.3Vout, over 92% of full-rated power is available with only convection cooling at 70°C. Additional features include: 1500VDC input-to-output isolation, Basic insulation, start-up into highly-capacitive loads, and low conducted and radiated EMI.

Interface features include: remote on/off, remote output voltage sensing, and industry-standard output trim. Protections include: overvoltage, undervoltage, overcurrent, and overtemperature. Regulatory approvals include: UL60950-1-03/CAN/CSA-C22.2 No. 60950-1, TUV EN 60950-1, and IEC 60950-1. These cost-effective products incorporate 0.5" (12.7mm) heights and industry-standard 2.28 x 1.45 inch (57.9 x 36.8mm) footprints.

Pricing is $45 each in quantities of 1000. Samples are usually available from stock. Production quantities are typically available in six to eight weeks. RoHS lead-free and lead-solder-exempted versions are available.

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