Models Available Input: 5 V nominal 33 W, 10 A output Qualified to MIL-PRF-38534 Class H and Class K 1.0 DESCRIPTION The SVGA 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, radiation lot acceptance testing (RLAT) of non-hardened components, and analysis. The SVGA 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 P. Characterization is performed at both the component level and at the SVGA Series hybrid converter level. The SVGA Series of point of load DC-DC converters is radiation tolerant 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 10 Amps or 33 Watt Output • High Efficiency, up to 94% • High Power Density, >100 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-cm2/mg. 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 # 5962-12219 • 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 • SVGA0515S 50 W space qualified point of load DC-DC converter • SVRGA0508S 20 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. O-O

3.0 SPECIFICATIONS 3.1 ABSOLUTE MAXIMUM RATINGS E-mail: [email protected] Web: www.vptpower.com

Tcase = -55 °C to +125 °C, Vin = +5 V ± 1%, Full Load, Unless Otherwise Specified Parameter Conditions Min Typ Max Units 1. Performance specifications are met with 100 pF from VIN to COM 2. Dependent on output voltage 3. Time for output voltage to settle within 1% of steady-state value 4. Verified by qualification testing 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 Fax: (425) 353-4030E-mail: [email protected] Web: www.vptpower.com

SVGA0510S Series 4.0 PERFORMANCE CURVES 4.1.1 SVGA0510S Efficiency (Typical, 25 °C) Output Voltage: Output Voltage: Output Voltage: Output Voltage: Output Voltage: Sales Information E-mail: [email protected]

Standard Package Option: 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

SVGA0510S 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 SVGA0510S 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 SVGA0510S is optimized for low voltage point of load applications. 6.1.2 External Components The SVGA0510S Series has internal input and output...

SVGA0510S 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 SVGA0510S 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 will...

6.4 THERMAL CONSIDERATIONS The SVGA0510S is rated for full power operation at 125 °C. Operation above 125 °C is allowed at reduced power. Specifically, the output power should be derated linearly from full power at 125 °C to half power at 130 °C and to zero power at 135 °C. The operating temperature of the converter is specified on the baseplate of the converter. The converter is designed to be conduction-cooled, with the baseplate mounted to a heat sink, chassis, PCB or other thermal surface. The internal power dissipating components are mounted to the baseplate of the converter and all heat...

7.0 ENVIRONMENTAL SCREENING 100% tested per MIL-STD-883 as referenced to MIL-PRF-38534. Contact sales for more information concerning additional environmental screening and testing options. VPT Inc. reserves the right to ship higher screened or SMD products to meet orders for lower screening levels at our sole discretion unless specifically forbidden by customer contract. MIL-STD-883 Test Method, Condition (Class H + PIND) (Class K) Non-Destructive Bond Pull Acceleration Direction Final Electrical Hermeticity (Seal) TM1015, 320 hrs., 125 °C, Case Typ TM1015, 160 hrs., 125 °C, Case Typ 24 hrs.,...