
Build better UAVs using modular power
Power Delivery Networks (PDN) based on Vicor high performance power modules enable innovative designs for the next generation of UAV development
New solid-state X-ray technology allows medical X-ray scanners to be more portable and battery operated, enabling medical professionals to check patients in any location. Medical X-rays typically need a short pulse of high-intensity radiation energy, which can conveniently be stored and supplied to the X-ray diode by a supercapacitor, in this case charged to 28V. Normally the 28V would be sourced from a number of Li-ion batteries in series. However, in a portable application, this type of battery array and charging system is too large and too heavy. The key goals were:
Use of a bi-directional DC-DC converter reduced the battery array to just one 2.7V Li-ion cell, reducing size and weight significantly compared to a typical boost converter solution. In addition, the bi-directional converter delivered higher efficiencies when charging the supercapacitor from a low voltage source, extending battery life.
Ultra-small, lightweight solution (8.6cm2 footprint, 16g weight) compared to a boost converter solution
Unique bi-directional converters (DC-DC transformer) available as standard products
Higher efficiency achieved using low-loss Sine Amplitude Conversion topology
A Vicor VTM, operating in reverse, stepped-up the 2.7V input to provide a nominal 32V rail with an efficiency of more than 94%. For the supercapacitor charging circuit, a ZVS Buck-Boost converter regulated the 32V and provided the necessary current limiting. This architecture was accomplished in a footprint of just 8.6cm2. To analyze this power chain, go to Vicor Whiteboard online tool.
絶縁 電圧変換比固定
入力電圧: 0 – 60V
出力電圧: 0 – 55V
出力電流: 最大115A
ピーク効率: 97%
22.83 x 8.52 x 4.9mm 他
Build better UAVs using modular power
Power Delivery Networks (PDN) based on Vicor high performance power modules enable innovative designs for the next generation of UAV development
High-density, high-power modules enable lighter, safer, lower cost tether cables to extend missions
This class of unmanned vehicle is powered and controlled via a tether from a ground-based power source assisting in extended missions
High-efficiency, high-density modules free up space for advanced communications and extend range
High-efficiency class of UAV depend on solar power to meet its long flight time requirements
DCM DC-DC converters double the internal bus power and help keep the aircraft as light as possible
High-altitude long-endurance (HALE) UAVs are essentially flying satellites, designed to operate at extremely high altitudes for extended periods