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SVPL3R312S Point of Load DC-DC Converter

The SVPL Series of space qualified point-of-load DC-DC converters is specifically designed for the harsh radiation environment of space applications. Performance is guaranteed through the use of hardened semiconductor components and analysis. The SVPL Series has been characterized for Total Ionizing Dose (TID) performance including Enhanced Low Dose Rate Sensitivity (ELDRS) and for Single Event Effects (SEE) per VPT’s DLA-approved Radiation Hardness Assurance (RHA) plan per MIL-PRF-38534, Appendix G, Level R.

The SVPL3R312S is based on the Intersil ISL70002SEH radiation-hardened monolithic buck regulator. It is designed to operate from a nominal 3.3 V or 5 V bus. The SVPL3R312S supplies low voltages at 12 A with high efficiency and fast transient response, making it an ideal choice to supply point-of-load applications such as high performance space processors.


  • Operates from 3.1 to 5.5 V input
  • Adjustable output from 0.8 V to 3.8 V
  • Up to 12 Amps output power
  • High efficiency, up to 93%
  • High power density, up to 134 W/in3
  • Output enable control
  • Low output noise
  • Over current protection
  • Bi-directional SYNC pin allows devices to be synchronized
  • Low-profile, precision projection-welded metal case packaging: 18g max weight, (1.075″ x 1.075″ x 0.270″)

Space-Level Characterizations:

  • Total Ionizing Dose Performance
    • High Dose Rate [50-300 rad(Si)/s] ≥ 100 krad(Si)
    • Low Dose Rate [<10 mrad(Si)/s] ≥ 100 krad(Si)
  • Single Event Effects Performance:
    • SEL, SEB, and SEGR LETTH ≥ 85 MeV/mg/cm2
    • SEFI Threshold LETTH ≥ 58 MeV/mg/cm2
    • SEFI X-section (LETEFF ≥  85 MeV/mg/cm2) ≤ 6.59×10-7cm2
    • SET fully characterized for cross section and magnitude
  • Operation from -55°C to +125°C
  • Worst case analysis, stress, radiation and reliability reports available

Compliances and Certifications:

  • Qualified to MIL-PRF-38534 Class H and Class K. DLA SMD# 5962-17216
  • MIL-PRF-38534 element evaluated components
  • Manufactured in a facility certified to SAE AS9100, MIL-PRF-38534 Class H and Class K
  • MIL-STD-883

Summary Data

For complete specifications, please see the official datasheet.

To provide you with the most accurate data for the actual performance of this product once deployed, please note that the electrical performance data provided below is at Tcase = -55°C to 125°C, Vin= +5V ± 1%, Vout = 3.3V ± 1%, full load, unless otherwise specified.

Select a product to view its specifications:

Parameter Conditions SVPL3R312SUnits
Input Voltage 3.1 5.5V
Output VoltageFull Load, Adjustable Vout-1.5 +1.5%Vout
Output Power 0 45.6W
EfficiencyVin = 5V, Vout= 3.3V, Iout = 12 A8388 %
Output Ripple Full Load
20Hz to 10MHz

Subject to all export restrictions and export regulations including but not limited to the Export Administration and Foreign Assets Control Regulations. Further restrictions may apply; contact VPT for details.
VPT, Inc.

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