Crystalspace P1U ”Vasik” Power Supply

Note: This specification is preliminary


Crystalspace P1U power supply is the smallest and most advanced power supply in the market. It suits well for densely packed 1 and 2 unit CubeSats. It uses fast maximum power point tracking boost converters to charge integrated doubled battery pack. Battery output is fed through duplicated converters that can provide 3.3 V, 5 V, 12 V. Unregulated 3.7 V battery and regulated buses are
available through individually selectable current limited and latch-up protected switches. Pinouts,output voltages and channels are changeable to user needs. Each sold unit has gone through acceptance testing


  • 7 mm thick and weighs only 80 g
  • All critical components are doubled (all regulators and batteries)
  • Architecture flight tested on successful ESTCube-1 satellite
  • Up 10 W continuous solar input
  • 3 Ah / 11 Wh of battery
  • 3 voltage rails + unregulated 3.7 V battery rail
  • 6 outputs with separate current limits, protection and controllable switching
  • All voltages are monitored
  • Remove-Before-Flight pin connection
  • RS485, RS422, UART or SPI controlled
  • Compatible with CubeSat Kit and other standard components
  • Double under-and overvoltage protection

Available options

  • Doubled battery pack: 6 Ah / 22 Wh, with 13 mm thickness and 140 g weight
P1U "Vasik" power supply

P1U “Vasik” power supply


  • > 90% input converter efficiency
  • Power consumption: 15 mW
  • Regulated voltage rails with 4 W guaranteed output

Product Properties

  • Dimensions: 96 mm x 90 mm x (7 or 13) mm
  • Temperature range (excluding batteries) −40°C to 85°C
  • Mass without connector: 80 g
  • IPC-A-610 Class 3 assembly
  • Vibration and shock tested
  • Thermal vacuum tested

Specification sheet as PDF

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