Vicor's 700V K=1/16 Bus Converter
The 700V K=1/16 Bus Converter is a fixed ratio ultra-high voltage bus converter within the Vicor Bus Converter Module. It offers an output power of 1.75 kW with a peak efficiency of 97% and a power density of 700 W/in³. The device is available in a heat-sinkable 4414 (111 mm x 36 mm x 9.3 mm) VIA package that supports chassis-mount or board-mount options and withstands isolation voltages up to 4.3 kV. This rugged VIA package also integrates PMBus™ communications, EMI filtering, and voltage transient protection. These highly flexible modules can be easily paralleled to form a variety of higher power arrays. In addition, the BCM outputs can be connected in series to increase the output voltage.
The BCM is an ideal power component for a variety of applications such as tethered drones, underwater robots, power distribution systems and 3-phase AC front ends. Additionally, the BCM can be used as an isolated unregulated front-end, which in turn provides a wide range of Vicor ZVS PoL buck and boost regulators or PRMs and VTMs in a split-ratio power architecture.
The latest release of new ultra-high voltage BCMs is available in "T-class" (-40˚C to 100˚C) or "C-class" (-20˚C to 100˚C) operating temperature ratings, with military-grade (-55˚C to 100˚C rated) planned for release in late 2017. 55˚C to 100˚C) products are planned for release in late 2017.
700V UHV BCM Supports 3-Phase AC Applications
Providing DC-DC conversion after AC rectification and PFC, the 700V UHV BCM provides power system designers with a highly efficient small power supply component for the development of extremely compact, low-cost 3-phase AC systems supporting SELV outputs. This 400V to 700V input device meets the 380VRMS and 400VRMS rated input AC-DC conversion requirements common in industrial applications.
Remote drones can benefit greatly from high voltage DC transmission and bi-directional capability, and the UHV BCM's 1:16 ratio and bi-directional operation make it an ideal solution for remote drones or underwater robots used in land, sea and air exploration. Bi-directional operation allows the system to raise and then lower the line voltage to take full advantage of lower I2R losses, which can significantly reduce the size, weight and cost of distribution cables and dramatically improve system efficiency. The cross-section and weight of tethered cables can be reduced by using higher transmission voltages, which can extend the operating range of drones or underwater robots.
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