TDK-Lambda News

Lambda has extended its range of PAF ‘full-brick’ DC-DC converters through the introduction of new 600W versions with high input voltage ratings. Ideal for high power applications, such as large computers with distributed power architectures and telecom basestations, the new PAF600F280 series combines compact size, low noise output and high efficiencies of over 90%.

“The PAF600F280 is perfect for designers working with high input voltages,” commented Dave Buck, Lambda’s business development manager. “It is extremely flexible. With input voltage rated over a wide 200-400V DC range and a voltage adjustment of –40 to +20%, the PAF600F280 allows a broad range of non-standard voltages to be achieved”.

Combining ASIC control with zero voltage switching (ZVS) technology, the PAF600F280 is able to achieve three times the power density of more conventional converters. Four new variants have been introduced with output voltages and output currents of: 12V 50A, 24V 25A, 28V 21.5A and 48V 12.5A. Over-current protection is from 105 to 140% and over-voltage protection is from 125 to 145%. The new units can be connected in series or parallel, providing the flexibility of a wide variety of configuration options. Features include remote sensing, remote on/off and IOG signal.

The conduction-cooled converters are designed for tough operating conditions with baseplate operating temperatures from –40 to 100ºC and operating humidity of 30 to 95% RH.