¼-brick provides over 95% rated power at 70°C

19 October 2005 Power Electronics / Power Management

Power-One's 46 A quarter-brick bus converter, the QTS48T46096, offers industry-leading efficiencies of over 97%. Combined with advanced thermal-management techniques it delivers precedent-setting elevated-temperature performance - 95% of full-rated power is available at 70°C with only 200 LFM airflow. The 5:1 fixed-ratio design also increases overall power-system efficiencies by providing a 9,6 V bus voltage (48 V input) that reduces the input/output voltage deltas of point-of-load devices.

States Steve Goldman, Power-One chairman and CEO: "Our customers have told us that high power at 55°C only solves half their problems; they also need high power in their 70°C environments. Our response is a product that delivers 420 W at 70°C, the highest for any quarter-brick bus converter currently available."

The QTS48T46096 operates from a regulated 36 to 55 V input to provide a proportional 7,2 to 11 V output. Other features include: industry-standard 58 x 37 x 13 mm footprint, 1500 V input-to-output isolation, remote on/off, no minimum-load operation, low conducted and radiated EMI, and an output-parallel option. Protection features include: output overcurrent, input undervoltage lockout, and input overvoltage shutdown.

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