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The SA series of DC-DC converters is available in both triple and single outputs. These devices are designed and qualified for the rigors of space including characterization for both Total Ionizing Dose (TID) and Single Event Effects (SEE). Operating at a fixed frequency of 220 kHz, the SA family of parts can be externally synced with other frequency sources.

SA50-120

Radiation-hardened (rad-hard) DC-DC power converters—the only standard non-hybrid space-grade DC-DC power converters available—utilize surface-mount component construction, allowing flexibility and customization to fit specific applications and requirements. The SA50-120 family, qualified to Mil-Std-461, Mil-Std-883 and Mil-Std-202, enables you to start with proven Commercial-Off-the-Shelf (COTS) technology and quickly scale up development, reducing risk and development time. 

Quick Glance:

  • SA50-120 power converters utilize 120V input and offer up to 56W of output in a low-profile, small-sized solution
  • EMI-compliant and radiation-hardened designs with single and triple outputs are ideal for space station and ORION program platforms
  • Units utilize switching regulators that use peak-current-mode controlled single-ended forward converter topology with inherent single-event immunity
  • Eight million hours Mean Time Between Failure (MTBF) and up to 87% efficiency, the highest of any standard 120V input space-grade DC-DC power converter
  • Single-output versions additionally offer remote sense, output voltage adjust and parallel connection functions

Radiation-Hardened Isolated DC-DC Converters


Part Number Pwr
(W)
Vin
(V)
Vout1
(V)
Iout1 Vout2
(V)
Iout2 Vout3
(V)
Iout3 Sync Inhib Parallel Pin Remote Sense Output Adjust Rad Level1
SA50-120-3R3S-A-P 33 120 3.3 10         Y Y Y Y Y -
SA50-120-3R3S-A-H 33 120 3.3 10         Y Y Y Y Y H
SA50-120-5S-A-P 50 120 5 10         Y Y Y Y Y -
SA50-120-5S-A-H 50 120 5 10         Y Y Y Y Y H
SA50-120-12S-A-P 50 120 12 4.2         Y Y Y Y Y -
SA50-120-12S-A-H 50 120 12 4.2         Y Y Y Y Y H
SA50-120-15S-A-P 51 120 15 3.4         Y Y Y Y Y -
SA50-120-15S-A-H 51 120 15 3.4         Y Y Y Y Y H
SA50-120-28S-A-P 56 120 28 2         Y Y Y Y Y -
SA50-120-28S-A-H 56 120 28 2         Y Y Y Y Y H
SA50-120-3R3-12T-A-P 43 120 3.3 4 12 1.25 -12 1.25 Y Y N N N -
SA50-120-3R3-12T-A-H 43 120 3.3 4 12 1.25 -12 1.25 Y Y N N N H
SA50-120-3R3-15T-A-P 43 120 3.3 4 15 1 -15 1 Y Y N N N -
SA50-120-3R3-15T-A-H 43 120 3.3 4 15 1 -15 1 Y Y N N N H
SA50-120-5-12T-A-P 50 120 5 4 12 1.25 -12 1.25 Y Y N N N -
SA50-120-5-12T-A-H 50 120 5 4 12 1.25 -12 1.25 Y Y N N N H
SA50-120-5-15T-A-P 50 120 5 4 15 1 -15 1 Y Y N N N -
SA50-120-5-15T-A-H 50 120 5 4 15 1 -15 1 Y Y N N N H

Note 1: Radiation level – "H" >100 Krad (TID), >80 MeV•cm2/mg (SEE); "P" prototype version

Other mounting hole options and connector pin location options available

These modules are easily modified for a nominal NRE

Modifications include input voltage, output voltage, package mounting style