PREMO Announces New PBP Planar Chokes Series for DC-DC Converters
PREMO introduced its new PBP19 Series, a new inductors family designed for dc-dc converters and telecom power supplies up to 500W, where the height of the 19" RAC system may be 0.25 or 0.5U, increasing power density and reducing telecom power systems sizes. The PBP19 series with 7.4mm height is offered in Tape&Reel for SMT technology and allows a maximum surface of 92% of total area in contact with the heat dissipating interface, either a coolplate or traditional heatsink. The thermal optimization of components allows 10mJ energy storage with 2.8µs cycles producing a lower dissipation of 2W and a high performance n> 95%.
The Telecom converters with soft-switching topologies (ZVS) allow increasing the switching frequencies from 250kHz up to 500kHz by using low Mosfet resistance. The dc resistance of the PBP19 series is typically 2mΩ, which perfectly fits in power semiconductors needs. This is achieved by implementing multilayer leadframe technology which eliminates round standard copper wire, skin effect and inefficiencies in the optimization of the winding window. The series allows configurations of 4 windings, with isolation against core above 500Vdc and overload saturation of 15% to 20% on the peak current.
PBP19 series is pin to pin compatible with other standard solutions, but eliminating the extra lateral pins, reducing 10% the PCB surface are and increasing the power density or reducing PCB costs.
