vpr Power Your Critical Mission Today SPACE QUALIFIED POINT OF LOAD CONVERTERS Models Available Input: 5V Nominal 10 A output Qualified to MIL-PRF-38534 Class H and Class K 1.0 DESCRIPTION The SVFA 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 SVFA 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 SVFA hybrid converter level. The SVFA 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 to 3.4V • Up to 10 Amps Output • High Efficiency, up to 94% • High Power Density, up to 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 40 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 # 5962-17203 • 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: 1.110” x 1.110” x 0.276” • Max weight: 22 g • Precision seam-sealed hermetic metal case 1.5 SIMILAR PRODUCTS AND ACCESSORIES • SVFA0510S 10 A space qualified point of load DC-DC converter • SVFA0515S 15 A space qualified point of load DC-DC converter • SVFA0515SG 15 A space qualified point of load DC-DC converter • SVGA0510SG 10 A space qualified point of load DC-DC converter • SVGA0515SG 15 A space qualified point of load DC-DC converter • SVRGA0508S 8 A space qualified point of load DC-DC converter • Custom versions available • Space qualified isolated DC-DC converters. 6 - 100 W • EMI filters

vpr Power Your Critical Mission Today O- 1. Rtrim should be connected directly across pins 11 and 12 as close as possible to the SVFA. 2. AGND should be connected to GND close to the SVFA. Voltage difference between the AGND and the GND pins greater than 0.3 V may result in regulation error and/or damage to the SVFA. 3. If not using INH, leave pin 9 open. 4. Rcomp and Ccomp are optional components that can be used to optimize the SVFA transient response. 3.0 SPECIFICATIONS 3.1 ABSOLUTE MAXIMUM RATINGS

vpr Power Your Critical Mission Today O- Tcase = -55 °C to +125 °C, Vin = +5 V ± 1%, Full Load, Unless Otherwise Specified Sales Information Phone:(425) 353-3010 Fax: (425) 353-4030E-mail: [email protected] Web: www.vptpower.com SVFA0510SG - 5.0 Page 3 Performance specifications are guaranteed with 100gF from VIN to GND. Verified by initial electrical design verification. Post design verification, parameter shall be guaranteed to the limits specified. Output voltage not necessarily in regulation. Dependent on output voltage. Time for output voltage to settle within 1% of steady-state value....

vpr Power Your Critical Mission Today O- Output Current E-mail: [email protected] Web: www.vptpower.com

SVFA0510SG Series 5.0 MECHANICAL OUTLINES AND PINOUT 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 (Kovar, nickel plated); Pin (Copper-cored alloy 52, gold over nickel plated, 63/37 SnPb solder dipped); Pin Seals (Glass) Sales Information E-mail: [email protected]

vpr Power Your Critical Mission Today o- SVFA0510SG Series5.0 MECHANICAL OUTLINES AND PINOUT (CONTINUED)Optional Straight-Lead Package: 2.41Q±.010 61.21±025 | 1.11 Oin 128.19mm 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 (Kovar, nickel plated); Pin (Copper-cored alloy 52, gold over nickel plated); Pin Seals (Glass) 4. Pins may have exposed nickel plating (not base metal) beyond the ceramic tie bars due to the plating process. No nickel plating is exposed between...

SVFA0510SG 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 SVFA0510SG 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 high efficiency. The SVFA0510SG is optimized for low voltage point-of-load (POL) applications. 6.1.2 External Components The SVFA0510SG Series has internal input and output...

SVFA0510SG 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 AGND pin. Use the equations or table below to choose the trim resistor value. Trim resistor tolerance of 0.1% is recommended to achieve an accurate output voltage. The default output voltage with the TRIM pin left open is 0.8 V. SVFA0510SG ݑŰݑ Űݑpݑpݑpݑpݑpݑ pݑpݑ = pݑɰݑɰݑ°ݑ°ݑ°ݑ°ݑ°ݑ = 6.2.3 Output Capacitors Output capacitors for point-of-load (POL) DC/DC converters should be chosen to meet output voltage ripple and transient requirements....