DC-DC Converter suits cellular infrastructure applications.

Press Release Summary:

Rated at 350 W, half-brick Model HBA48T12280 has smooth efficiency curve that equals or exceeds 90% for loading conditions ranging from 40-100%. Ultra-wide trim range allows configuration from 21-33 Vdc output for RF amplifier applications. Housed in 2.4 x 2.28 x 0.5 in. package, RoHS-compliant device features on-board input differential LC-filter, input range of 36-75 Vdc, and operating temperature from -40 to 100°C. Unit can withstand 100 V input transient for 100 msec.

Original Press Release:

Half-Brick Provides Ultra-Wide Output Voltage Range for Cellular Infrastructure and RF Amplifier Applications

Camarillo, CA - Power-One, Inc. (Nasdaq: PWER), a leading provider of power conversion and power management solutions, introduces the HBA48T12280, a highly efficient 350-watt half-brick DC-DC converter for use in cellular infrastructure applications and more specifically to RF amplifier applications. The HBA48T12280 has a smooth efficiency curve that equals or exceeds 90% for loading conditions ranging from 40 to 100%. Its ultra-wide trim range allows it to be configured to operate within a 21 to 33 VDC output, allowing it to be used across a multitude of RF amplifier technologies.

Additional features include: 36 - 75 VDC input range, -40 to 100 °C operating temperature range, capability to withstand a 100V input transient for 100ms, ability to start-up into pre-biased loads, and an on-board input differential LC-filter. The HBA48T12280 has an industry-standard half-brick footprint (2.4 x 2.28 inch, 61 x 57.9mm), a low profile 0.5 inch (12.7mm) height, and is RoHS compliant for all six substances.

Protections include: output overvoltage and overcurrent, input undervoltage lockout, and overtemperature shutdown. Interface and trim capabilities include: remote sense, remote ON/OFF (positive or negative logic option), and +18%/-25% output voltage trim ranges with industry-standard trim equations. Safety approvals include: UL60950-1/CSA 22.2 No. 60950-1, EN60950-1 and IEC60950-1.

Evaluation models are usually available from stock. Please contact Steve Pimpis for pricing and availability. A data sheet is available at:

Power-One designs and manufactures energy-efficient power conversion and power management solutions for alternative/renewable energy, routers, data storage and servers, wireless communications, optical networking, medical diagnostics, military, railway controls, semiconductor test equipment, and custom applications. Power-One, with headquarters in Camarillo, CA, has global sales offices, manufacturing, and R&D operations in Asia, Europe, and the Americas. Please visit www.power-one.com for more information.

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