vpr Power Your Critical Mission Today Models Available Input: 5 V nominal 20 W, 8 A output Qualified to MIL-PRF-38534 Class H and Class K Designed for TOR Compliance 1.0 DESCRIPTION The SVRGA Series of space qualified point of load DC-DC converters is specifically designed for the harsh radiation environment of space applications and is designed in accordance with Aerospace TOR requirements. Performance is guaranteed through the use of hardened semiconductor components, radiation lot acceptance testing (RLAT) of non-hardened components, and analysis. The SVRGA 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 R. Characterization is performed at both the component level and at the SVRGA Series hybrid converter level. The SVRGA Series of point of load DC-DC converters is radiation hardened and suited for use in low Earth orbit (LEO), medium Earth orbit (MEO), geostationary orbit (GEO), deep space, and launch vehicle programs. 1.1 FEATURES • Operates from 5 V input • Adjustable Output from 0.8 V to 3.4 V • Up to 8 Amps or 20 Watt Output • High Efficiency, up to 92% • High Power Density, >64 W/in3 • Output Inhibit Control • Low Output Noise • No Use of Optoisolators • Short Circuit Protection 1.2 SPACE LEVEL CHARACTERIZATIONS • Guaranteed TID performance to 100 krad(Si) including 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 1.3 MANUFACTURING AND COMPLIANCE • Qualified to MIL-PRF-38534 Class H and Class K, DLA SMD # 5962-13217 • Available compliant to MIL-HDBK-1547 and Aerospace TOR component level element evaluation • MIL-PRF-38534 element evaluated components • Manufactured in a MIL-PRF-38534 Class H and Class K facility • MIL-STD-883 • ISO-9001 1.4 PACKAGING • Low-profile: 1.075” x 1.075” x 0.270” • Max weight: 16 g • Precision projection-welded hermetic metal case 1.5 SIMILAR PRODUCTS AND ACCESSORIES • SVGA0510S 33 W space qualified point of load DC-DC converter • Custom versions available • Space qualified isolated DC-DC converters. 15 - 100 W • EMI filters Products and reports described in this datasheet are subject to all export license restrictions and regulations which may include but are not limited to ITAR (International Traffic in Arms Regulations) and the Export Administration and Foreign Assets Control Regulations. Further restrictions may apply. Contact VPT sales for details.

vpr Power Your Critical Mission Today 2.2 CONNECTION DIAGRAM +VIN 3.0 SPECIFICATIONS 3.1 ABSOLUTE MAXIMUM RATINGS Absolute Maximum Ratings E-mail: [email protected] Web: www.vptpower.com

Power Your Critical Mission Today O- SVRGA0508S Series 3.2 PERFORMANCE SPECIFICATIONS1Tcase = -55 °C to +125 °C, Vin = +5 V ± 1%, Full Load, Unless Otherwise SpecifiedSVRGA0508STyp Parameter 4. Verified by initial electrical design verification. Post design verification, parameter shall be guaranteed to the limits specified 5. Output voltage not necessarily in regulation 6. End-of-Life performance includes aging and radiation degradation and is within standard limits except where noted Sales Information Phone:(425) 353-3010 E-mail: [email protected] Performance specifications are met with...

SVRGA0508S Series 4.0 PERFORMANCE CURVES 4.1.1 SVRGA0508S Efficiency (Typical, 25 °C) Output Voltage: Output Voltage: Output Voltage: Output Voltage: Output Voltage: Sales Information

vpr Power Your Critical Mission Today 1. Tolerances are +0.005” unless otherwise stated 2. Case temperature is measured on the center of the baseplate surface 3. Materials: Case (Steel, gold over nickel plated); Cover (Steel, nickel plated); Pin (Copper-cored alloy 52, gold over nickel plated); Pin Seals (Glass) E-mail: [email protected] Web: www.vptpower.com

SVRGA0508S Series 6.0 TECHNICAL NOTES Please note that many of these functions are also demonstrated in detail on the VPT website in the form of technical video labs. 6.1 GENERAL INFORMATION 6.1.1 Topology Description The SVRGA0508S Series is a non-isolated, fixed-frequency, radiation-hardened, synchronous buck converter. It operates from a 5 V input and provides a stepped-down, precisely regulated, programmable output voltage at very-high efficiency. The SVRGA0508S is optimized for low voltage point of load applications. 6.1.2 External Components The SVRGA0508S Series has internal input and...

SVRGA0508S Series 6.2.2 Adjusting the Output Voltage (TRIM) The output voltage of the converter is set with an external resistor connected from the TRIM pin to the COM pin. This resistor must have a tolerance of 1% or better to achieve an accurate output voltage. The default output voltage with the TRIM pin left open is 0.8 V. 6.3 PROTECTION FEATURES 6.3.1 Input Undervoltage Lockout The SVRGA0508S Series provides input undervoltage lockout protection. For input voltages below the turn-on voltage, the converter will remain off. When the input voltage exceeds the turn-on voltage, the converter...

vpr Power Your Critical Mission Today O- VPT takes a conservative approach to radiation testing to ensure product performance in a space environment. VPT's DLA-approved Radiation Hardness Assurance (RHA) plan documents VPT's processes and procedures for guaranteeing the performance of VPT products under various environmental conditions in space including Total Ionizing Dose (TID) and Single-Event Effects (SEE). Additionally, Enhanced Low Dose-Rate Sensitivity (ELDRS) effects are considered for all bipolar ICs used in the hybrid. Hardness is guaranteed by a combination of both hybrid-level characterization...