New Buck Regulators Enhance Power Component Design Methodology for 48 V Bus Systems

May 20, 2015
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PR_Photo_CoolPower_ZVS_Buck_48V_2Vicor today announced a family of 48 V Buck Regulators that help engineers use the Power Component Design Methodology to develop complete power systems using 48 V power distribution. The four new components provide 48 V direct to point-of-load (PoL) conversion, delivering from 2.2 V to 14 V at an output current up to 10 A from a wide 36 V to 60 V input.

By offering direct conversion from 48 V to the voltage required by the PoL without sacrificing performance, the new regulators allow engineers to eliminate inefficient intermediate conversion stages, enabling more efficient power distribution architectures and reducing I2R losses.

Built using a high-performance Zero-Voltage Switching (ZVS) topology, the new Buck Regulators provide large step-down ratios at unparalleled efficiency of over 96%. The new power components also offer benchmark power density, delivering over 100 W from a compact 10 mm x 10 mm x 2.5 mm LGA SiP (System in Package) module.

The 48 V Buck Regulators are scalable, offering single wire current sharing without the need for any additional components, allowing designers to easily support higher power applications. Other advanced features include constant current control for lighting and battery applications.

Today we announced four new devices:

  • PI3542 – 2.2 to 3.0 V output at 10 A
  • PI3543 – 2.6 to 3.6 V output at 10 A
  • PI3545 – 4.0 to 5.5 V output at 10 A
  • PI3546 – 6.5 to 14.0 V output at 9 A

The new PI354x family are ideal for use with the BCM and PFM front-end components in VIA packaging technology that were announced yesterday. Power system designs can use the Vicor Power Component Design Methodology to develop power chains from AC or HVDC sources to the PoL that combine the 48 V Buck Regulators, Vicor’s front-end products and Factorized Power products.

Typical applications that would benefit from the efficient conversion offered by the new 48 V Buck Converters include telecom, network infrastructure, datacenters, industrial, battery, and lighting systems.

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