https://milpower.com/products/power-conversion-solutions/dc-dc-power-supplies/m7027
M7027 military DC to DC power supply, 500W - Milpower Source, Inc. | Rugged Military Power Supplies...
The M7027 DC/DC power supply is a Single Output, high density, highly efficient military grade rugged DC to DC converter capable of delivering up to 500W...
power supply