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World’s first commercialized hydrogen fuel cell power pack for UAVs The solution Talk to us about your design

Industry-leading UAV flight range

Industry-leading UAV flight range

Doosan Mobility Innovation (DMI), a leader in hydrogen fuel cell technology has developed the world’s first commercialized hydrogen fuel cell power pack that delivers breakthrough energy density, about 4 – 5 times that of a battery, enabling drones to fly for up to 2 hours. With the extended range that the hydrogen fuel cell power pack provides, DMI is delivering global humanitarian relief. Their drones have transported masks and emergency supplies between the US Virgin Islands and delivered medical AEDs to the top of Mt. Hallasan, South Korea’s tallest mountain on Jeju Island.

Customer challenge

Power delivery network challenges

Compact

Compact

Lightweight

Lightweight

Wide-range regulation

Wide-range regulation

Variable wide-range power pack voltage

Variable wide-range power pack voltage

DMI's DP30 power pack has two main power delivery networks (PDNs) that supply power to the drone’s rotors and the intelligent controller for the two stacks. Because of the wide-range and variable output voltage of the DP30 power pack, from 40 – 74V, the powertrains were designed to ensure a tightly regulated 48V, 12A output to the rotor motors of the drone, plus a 12V, 8A output to the stack controller board and fans.

Why Vicor

Why Vicor

High-power density

High-power density

Reliable

Reliable

Wide voltage range

Wide voltage range

High-efficiency power conversion

To achieve high-efficiency and high-energy density in the PDN, DMI selected Vicor PRM™ buck-boost regulators and a Vicor ZVS buck regulator. The PRMs support the up to 74V open-circuit voltage (OCV) of the hydrogen fuel cell stack and perform a stable voltage regulation to 48V. In the drone’s rotor-side PDN, two PRM buck-boost regulators (PRM48AF480T400A00) are configured in parallel to supply the 12A required by the rotors. The PDN for the digital controller board in the stack uses a lower-power PRM (PRM48AH480T200A00) followed by a 48V – 12V ZVS buck regulator (PI3546-00-LGIZ).

The power delivery network

Power Delivery Network for Doosan
PRM regulator

PRM48AF480T400A00 400W buck-boost regulator

PRM48AH480T200A00 200W buck-boost regulator

Input: 48V (36 – 75V)

Output: 48V (20 – 55V)

32.5 x 22.0 x 6.73mm

PI3546-00 buck regulator

PI3546 buck regulator

Input: 48V (36 – 60V)

Output: 12V (2.2 – 14V)

Current: Up to 9A

10.0 x 10.0 x 2.56mm

Related products

Family of PRM buck-boost regulators

PRM pre- and post-transformation regulators

Input: 48V (36 – 75V)

Output: 48V (5 – 55V

Power: Up to 600W

Efficiency: Up to 97%

As small as 22.0 x 16.5 x 6.73mm

ZVS buck regulators

ZVS buck regulators

Inputs: 12V (8 – 18V), 24V (8 – 36V), 48V (30 – 60V)

Output: 1 – 16V 

Power: Up to 22A

Peak efficiency: Up to 98%

As small as 10.0 x 10.0 x 2.5mm  

Buck-boost regulators

ZVS buck-boost regulators

Input: 8 – 60V

Output: 10 – 54V

Power: Up to 150W continuous

Efficiency: Over 98%

10.5 x 14.5 x 3.05mm

Doosan case study
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