ARPS1020A5/ARPS1050A5

The ARPS1020A5 / ARPS1050A5 is a radiation-hardened by design family of power switches with integrated FET that is ideally suited for space, and other applications demanding radiation tolerance and high reliability. The 50 V variant supports the 28 V nominal bus voltage typically found in power distribution systems of a spacecraft, while the 20 V variant is ideal for a 12 V bus or at lower voltage loads such as 5 V and 3 V. With a 3 mm X 5 mm space plastic package, the switch can also benefit compact phased array systems where power switching of amplifier elements is needed. The devices also offer a user-configurable current trip threshold as well as a current sense telemetry output. A proprietary design enables balanced current sharing in parallel devices to support higher current applications.

• 20 V, 8 A, 23 mΩ RDSON
• 50 V, 4 A, 57 mΩ RDSON
• Industry’s smallest power switch 3 mm x 5 mm 24-pin QFN
• True current sharing in paralleled implementation
• Over-temperature protection, short protection, and programmable over-current protection
• Adjustable soft-start time
• Fault reporting and current sense outputs for external telemetry, fault management, and health monitoring
• Guaranteed break-before-make operation
• TID/SEE resilience to 100krad (Si) /LET = 72 MeV*cm2/mg
• Supports standard 3.3 V ,5 V, and 12 V power rails​
• Supports 28 V unregulated Spacecraft power bus​
• Superior SWaP-C ​​
• Extends current capacity for higher power applications​​
• Higher reliability​ for the most demanding missions and applications​
• Limits in Rush current​​
• Detect and contain system level faults​​
• Avoids hot switching ​​
• Radiation-Hardened against Single Event Effects (SEE)​

• Power distribution systems
• Load shedding
• Switching of cold spared power domains
• Heater switching
• Load current monitoring for on-orbit bias tuning
• Load current monitoring for latchup detection
• Fine granularity power domain latchup recovery
• Phased array antenna element control