VPT Power has launched the SVLSA Series of space-qualified DC-DC converters that are 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 SVLSA 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.
Key features
- Up to 6 W output power
- 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 I short circuit protection
Compliances and Certifications:
- Qualified to MIL-PRF-38534 Class H and Class K, DLA SMD#TBD
- MIL-PRF-38534 element-evaluated components
- MIL-STD-461 when used with appropriate VPT EMI filter
- Manufactured in an ISO9001, MIL-PRF-38534 Class Hand Class K facility
- MIL-STD-883
Space-Level Characterizations:
- Guaranteed TID performance to 60 krad (Si) including LDR
- SEE performance to 85 MeV/mg/cm2. Transients are fully characterized for cross-section and magnitude
- Worst-case analysis, stress, radiation, and reliability reports available
