The SVL28 Series of space qualified DC-DC converters is specifically designed for the harsh radiation environment of space applications. Performance is guaranteed through the use of hardened semiconductor components, radiation lot acceptance testing (RLAT) of non-hardened components, and analysis. The SVLSA Series has been characterized for Total Ionizing Dose (TID) performance including Enhanced Low Dose Rate Sensitivity (ELDRS) and for Single Event Effects (SEE) according to VPT’s DLA-approved Radiation Hardness Assurance (RHA) plan per MIL-PRF-38534, Appendix G, Level L. Characterization is performed at both the component level and at the SVLSA Series hybrid converter level.
Radiation-hardened to TID levels of 60 krad(Si) and SEE to 85 MeV/mg/cm2, the SVLHF Series of DC-DC converters is suited for use in many low Earth orbit (LEO), medium Earth orbit (MEO), geostationary orbit (GEO), deep space, and launch vehicle programs.
| Outpput Power | Model Series | Norminal Input Voltage | Continuous Input Voltage Range | Output DC Voltage | Package | SMD Number | EMI Filter | TID Krad (Si) | LET MeV-cm2 /mg |
|---|---|---|---|---|---|---|---|---|---|
| 6W | SVLSA2800S | 28V | 15-50V | Single 3.3/5/12/15 | Hermetic | TBD | 60 | 85 | |
| 20W | SVLHF2800S(F) | 28V | 15-50V | Single 3.3/5/12/15 | Hermetic | TBD | 60 | 85 | |
| 20W | SVLHF2800D(F) | 28V | 15-50V | Dual ±5/±12/±15 | Hermetic | TBD | 60 | 85 | |
| 40W | SVLTR2800S(F) | 28V | 15-50V | Single 3.3/5/12/15 | Hermetic | TBD | 60 | 85 | |
| 40W | SVLTR2800D(F) | 28V | 15-50V | Dual ±5/±12/±15 | Hermetic | TBD | 60 | 85 | |
| 120W | SVLFL2800S(F) | 28V | 16-40V | Single 3.3/5/12/15 | Hermetic | TBD | 60 | 85 | |
| 120W | SVLFL2800D(F) | 28V | 16-40V | Dual ±5/±12/±15 | Hermetic | TBD | 60 | 85 |
Note：（F）for Flanged Package Option
TID performance to 60 krad(si) characterized for ELDRS.
SEE performance to 85 MeV/mg/cm2 . Transients are fully characterized for cross section and magnitude.
Worst-case analysis, stress, radiation, reliability reports available.
Wide input voltage range: 15 V to 50 V plus 80 V transient
Continuous operation over full military temperature range of -55°C to +125°C with no power derating
Very low output noise
Radiation immune magnetic feedback circuit
No use of optoisolators
Undervoltage lockout
Current limit protection/short circuit protection
Qualified to MIL-PRF-38534 Class K on DLA SMD# TDB
MIL-PRF-38534 element evaluated components
MIL-STD-461 C/D/E/F when used with appropriate VPT EMI filter
Manufactured in a MIL-PRF-38534 Class H and Class K facility
MIL-STD-883 military and space environmental screening
ISO-9001
