SVRTR2805SF/K-E

DATASHEET SEARCH SITE | WWW.ALLDATASHEET.COM

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 15

Technical content

Sales Information Phone:(425) 353-3010 Fax: (425) 353-4030 SVRTR2800S - 8.0 E-mail: vptsales@vptpower.com Web: www.vptpower.com Page 1 SVRTR2800S SERIES SPACE QUALIFIED HYBRID DC-DC CONVERTERS SVRTR Series DC-DC Converter Models Available Input: 18 V to 40 V continuous, 50 V transient 40 W, single output of 3.3 V, 5 V, 12 V, 15 V Qualified to MIL-PRF-38534 Class H and Class K Designed for TOR Compliance

1.0 DESCRIPTION

The SVRTR Series of space qualified 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 SVRTR 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 SVRTR Series hybrid converter level. The SVRTR Series of 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

• Up to 40 W output power
• Wide input voltage range: 18 V to 40 V plus 50 V transient
• Continuous operation over full military temperature range of -55 °C to +125 °C with no power derating
• Very low output noise
• Output voltage trim up +10%
• Radiation immune magnetic feedback circuit
• No use of optoisolators
• Undervoltage lockout
• Current limit protection / 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 # 5962-13209
• Available compliant to MIL-HDBK-1547 and Aerospace TOR component level element evaluation
• MIL-PRF-38534 element evaluated components
• MIL-STD-461 C/D/E/F when used with appropriate VPT EMI filter
• Manufactured in a MIL-PRF-38534 Class H and Class K facility
• MIL-STD-883
• ISO-9001

1.4 PACKAGING

• Low-profile: 2.890” x 1.125” x 0.405”
• Max weight: 55 g
• Industry standard pinout
• Precision seam-welded hermetic metal case
• Flanged and Non-flanged versions available

1.5 SIMILAR PRODUCTS AND ACCESSORIES

• SVRTR 40 W dual output DC-DC converter
• SVTR 40 W space qualified DC-DC converter, 30 krad(Si)
• Custom versions available
• EMI filters
• Non-isolated, space qualified point of load converters
• Use with Thermal Pad TP-003 Products and reports described in this datasheet are subject to all export license restrictions and regulations which may inc lude 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.

Sales Information Phone:(425) 353-3010 Fax: (425) 353-4030 SVRTR2800S - 8.0 E-mail: vptsales@vptpower.com Web: www.vptpower.com Page 2 SVRTR2800S Series

2.0 DIAGRAMS

2.1 BLOCK DIAGRAM

2.2 CONNECTION DIAGRAM

3.0 SPECIFICATIONS

3.1 ABSOLUTE MAXIMUM RATINGS

Input Voltage (Continuous): -0.5 V to 40 V Operating Temperature (Full Load): -55 °C to +125 °C Input Voltage (Transient, 1 second): -0.5 V to 50 V Storage Temperature: -65 °C to +150 °C ESD Rating per MIL-PRF-38534: 1C Lead Solder Temperature (10 seconds): 270 °C UNDER VOLTAGE SHUTDOWN PRIMARY HOUSEKEEPING SUPPLY PWM CONTROL VOLTAGE AND CURRENT AMPLIFIERS SECONDARY HOUSEKEEPING SUPPLY 28VIN INCOM Rs1 T1 D1 Rs2 +VOUT OUTCOM INH FEEDBACK MAGNETIC SYNC INCOM INH 28VIN +VOUT OUTCOM LOAD+-28Vdc 28VOUT OUTCOM 28VIN INCOM CASE 7, 8 SYNC SVRMC28 EMI FILTER SVRTR2800S DC-DC CONVERTER

Sales Information Phone:(425) 353-3010 Fax: (425) 353-4030 SVRTR2800S - 8.0 E-mail: vptsales@vptpower.com Web: www.vptpower.com Page 3 SVRTR2800S Series

3.2 PERFORMANCE SPECIFICATIONS

Tcase = -55 °C to +125 °C, Vin = +28 V ± 5%, Full Load, Unless Otherwise Specified SVRTR283R3S SVRTR2805S Parameter Conditions3 Min Typ Max Min Typ Max Units INPUT Voltage Continuous 18 28 405 18 28 405 V Transient, 1 sec2 - - 50 - - 50 V Current INH < 1.5 V - 5 8 - 5 8 mA No Load - 40 90 - 40 90 mA Ripple Current 20 Hz to 10 MHz - 30 100 - 45 100 mApp Undervoltage Lockout Turn-On 14.5 - 17.5 14.5 - 17.5 V Turn-Off2 13 - 16.5 13 - 16.5 V OUTPUT STATIC Power 0 - 20 0 - 30 W Current 0 - 6.06 0 - 6 A Ripple Voltage 20 Hz to 10 MHz - 30 100 - 30 100 mVpp Line Regulation Vin = 18 V to 40 V - 1 20 - 1 20 mV Load Regulation No Load to Full Load - 5 50 - 4 50 mV Load Fault Power Dissipation Overload2 - - 16 - - 16 W Short Circuit - - 16 - - 16 W OUTPUT DYNAMIC Load Step, Half to Full Load Output Transient - 230 500 - 350 600 mVpk Recovery1 - 450 700 - 250 500 µs Line Step2, Vin = 18V to 40 V Output Transient - 500 800 - 400 800 mVpk Recovery1 - 500 700 - 350 500 µs Turn-On, Vin = 0 to 28 V Delay - 10 20 - 10 20 ms Overshoot - 2 15 - 2 25 mVpk FUNCTION INH Pin Input2 Output Inhibited 0 - 1.5 0 - 1.5 V INH Pin Open Circuit Voltage2 Output Enabled 9 12.5 14 9 12.5 14 V SYNC Frequency Range 500 - 600 500 - 600 kHz GENERAL Efficiency 67 71 - 73 76 - % Capacitive Load2 - - 500 - - 500 µF Switching Frequency 435 525 550 435 525 550 kHz Isolation 500 V DC, Tcase = 25 °C 100 - - 100 - - MΩ Weight Non-flanged package option - - 52 - - 52 g Flanged package option - - 55 - - 55 g MTBF (MIL-HDBK-217F)4 SF, Class K @ Tcase = 55 °C - 3.26 - - 3.26 - MHr 1. Time for output voltage to settle within 1% of steady-state value 2. Verified by initial electrical design verification. Post design verification, parameter shall be guaranteed to the limits specified 3. End-of-Life performance includes aging and radiation degradation and is within standard limits except where noted 4. Correction factor of 0.12 added to ceramic capacitors 5. 37.5 V Max continuous to be compliant to MIL-HDBK-1547 and Aerospace TOR

Sales Information Phone:(425) 353-3010 Fax: (425) 353-4030 SVRTR2800S - 8.0 E-mail: vptsales@vptpower.com Web: www.vptpower.com Page 4 SVRTR2800S Series Tcase = -55 °C to +125 °C, Vin = +28 V ± 5%, Full Load, Unless Otherwise Specified SVRTR2812S SVRTR2815S Parameter Conditions3 Min Typ Max Min Typ Max Units INPUT Voltage Continuous 18 28 405 18 28 405 V Transient, 1 sec2 - - 50 - - 50 V Current INH < 1.5 V - 5 8 - 5 8 mA No Load - 55 90 - 55 90 mA Ripple Current 20 Hz to 10 MHz - 60 100 - 60 100 mApp Undervoltage Lockout Turn-On 14.5 - 17.5 14.5 - 17.5 V Turn-Off2 13 - 16.5 13 - 16.5 V OUTPUT STATIC Voltage Tcase = 25 °C 11.88 12 12.12 14.85 15 15.15 V Tcase = -55 °C to +125 °C 11.70 12 12.30 14.625 15 15.375 V Power 0 - 40 0 - 40 W Current 0 - 3.33 0 - 2.67 A Ripple Voltage 20 Hz to 10 MHz - 30 125 - 30 110 mVpp Line Regulation Vin = 18 V to 40 V - 1 20 - 1 20 mV Load Regulation No Load to Full Load - 1 50 - 3 50 mV Load Fault Power Dissipation Overload2 - - 16 - - 16 W Short Circuit - - 16 - - 16 W OUTPUT DYNAMIC Load Step, Half to Full Load Output Transient - 450 700 - 400 700 mVpk Recovery1 - 250 500 - 250 500 µs Line Step2, Vin = 18V to 40 V Output Transient - 600 1000 - 500 900 mVpk Recovery1 - 300 500 - 300 500 µs Turn-On, Vin = 0 to 28 V Delay - 10 20 - 10 20 ms Overshoot - 10 50 - 15 50 mVpk FUNCTION INH Pin Input2 Output Inhibited 0 - 1.5 0 - 1.5 V INH Pin Open Circuit Voltage2 Output Enabled 9 12.5 14 9 12.5 14 V SYNC Frequency Range 500 - 600 500 - 600 kHz GENERAL Efficiency 78 82 - 80 84 - % Capacitive Load2 - - 300 - - 300 µF Switching Frequency 435 525 550 435 525 550 kHz Isolation 500 V DC, Tcase = 25 °C 100 - - 100 - - MΩ Weight Non-flanged package option - - 52 - - 52 g Flanged package option - - 55 - - 55 g MTBF (MIL-HDBK-217F)4 SF, Class K @ Tcase = 55 °C - 3.26 - - 3.26 - MHr 1. Time for output voltage to settle within 1% of steady-state value 2. Verified by initial electrical design verification. Post design verification, parameter shall be guaranteed to the limits specified 3. End-of-Life performance includes aging and radiation degradation and is within standard limits except where noted 4. Correction factor of 0.12 added to ceramic capacitors 5. 37.5 V Max continuous to be compliant to MIL-HDBK-1547 and Aerospace TOR

Sales Information Phone:(425) 353-3010 Fax: (425) 353-4030 SVRTR2800S - 8.0 E-mail: vptsales@vptpower.com Web: www.vptpower.com Page 5 SVRTR2800S Series

4.0 PERFORMANCE CURVES

4.1.1 SVRTR283R3S Efficiency (Typical, 25 °C) 4.1.2 SVRTR2805S Efficiency (Typical, 25 °C) 4.1.3 SVRTR2812S Efficiency (Typical, 25 °C) 4.1.4 SVRTR2815S Efficiency (Typical, 25 °C) 0 5 10 15 20 Efficiency (%) Output Power (W) 18 V 28 V 37.5 V 0 10 20 30 Efficiency (%) Output Power (W) 18 V 28 V 37.5 V 0 10 20 30 40 Efficiency (%) Output Power (W) 18 V 28 V 37.5 V 0 10 20 30 40 Efficiency (%) Output Power (W) 18 V 28 V 37.5 V

Sales Information Phone:(425) 353-3010 Fax: (425) 353-4030 SVRTR2800S - 8.0 E-mail: vptsales@vptpower.com Web: www.vptpower.com Page 6 SVRTR2800S Series

5.0 MECHANICAL OUTLINES AND PINOUT

Non-Flanged 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); Pin Seals (Ceramic) Pin Function Pin Function Pin Function Pin Function 1 28VIN 4 OUTCOM 7 CASE 10 INCOM

2 INH 5 +VOUT 8 CASE

2.125in 53.98mm MAX 1.125in 28.58mm MAX 0.405in 10.29mm MAX 0.260in±0.025 6.60mm±0.64 8X SEAL 0.124in±0.003 3.15mm±0.08 10X PIN 0.040in±0.003 1.02mm±0.08 0in 0mm 0.255in 6.48mm 0.400in 10.16mm 0.800in 20.32mm 1.200in 30.48mm 1.600in 40.64mm 0in 0mm 0.155in 3.94mm 0.800in 20.32mm BASEPLATE SURFACE PIN 1 1 2 3 4 5 678910

Sales Information Phone:(425) 353-3010 Fax: (425) 353-4030 SVRTR2800S - 8.0 E-mail: vptsales@vptpower.com Web: www.vptpower.com Page 7 SVRTR2800S Series

5.0 MECHANICAL OUTLINES AND PINOUT (CONTINUED)

Flanged Package Option: 1. Tolerances are +0.005” unless otherwise stated 2. Case temperature is measured on the center of the baseplate surface 3. Mounting holes are not threaded. Recommended fastener is 6 -32 4. Materials: Case (Steel, gold over nickel plated); Cover (Kovar, nickel plated); Pin (Copper-cored alloy 52, gold over nickel plated); Pin Seals (Ceramic) Pin Function Pin Function Pin Function Pin Function 1 28VIN 4 OUTCOM 7 CASE 10 INCOM 2.125in 53.98mm MAX 2.550in 64.77 1.125in 28.58mm MAX 0.162in 4.11mm R0.160in 4.06mm 2.890in 73.41mm MAX PIN 1 0.405in 10.29mm MAX 0.260in±0.025 6.60mm±0.64 0.060in + 0.000 0.005 1.52mm - 0.13 8X SEAL 0.124in±0.003 3.15mm±0.08 10X PIN 0.040in±0.003 1.02mm±0.08 0in 0mm 0.475in 12.07mm 0.400in 10.16mm 0.800in 20.32mm 1.200in 30.48mm 1.600in 40.64mm 0in 0mm 0.155in 3.94mm 0.400in 10.16mm 0.800in 20.32mm 1 2 3 4 5 678910 BASEPLATE SURFACE

Sales Information Phone:(425) 353-3010 Fax: (425) 353-4030 SVRTR2800S - 8.0 E-mail: vptsales@vptpower.com Web: www.vptpower.com Page 8 SVRTR2800S 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 SVRTR2800S Series is an isolated, single output, flyback converter. It operates over a wide input voltage range and provides a tightly regulated positive output voltage with respect to the OUTCOM pin. Feedback isolation is accomplished using VPT’s proprietary magnetic feedback technology. The converter regulates with zero load, and no minimum load is required.

6.1.2 External Components

The SVRTR2800S Series is designed to operate stand-alone in most applications. It does not require any external components for proper operation or to meet the datasheet specifications. Input and output L-C filters are provided internally for low ripple and noise. To further reduce output ripple and noise, a small ceramic capacitor, 1 µF to 10 µF, can be added at the output. Most application specific ripple requirements can be met with the addition of output capacitors alone. External output capacitance can be added up to the maximum listed in Section 3.2.

6.1.3 Source Impedance

The impedance of the 28 V input source can interact with the DC-DC converter and can affect performance. High source impedance is often caused by a long input cable or components added in series with the input. Source resistance will cause a DC voltage drop as the converter draws DC input current. This voltage drop is simply the cable resistance multiplied by the input current at low line. The voltage drop and the actual voltage at the input to the converter will determine the minimum source voltage at which the converter will operate. A high source inductance can interact with the feedback control loop of the converter. VPT’s EMI filters will usually isolate the source and eliminate this problem. In some cases, additional input capacitance will be needed to stabilize the system.

6.1.4 Output Configurations

Since the converter is isolated, the output can be configured as a positive or negative voltage. For example, the SVRTR2812S model can provide +12 V referenced to OUTCOM or -12 V referenced to +VOUT. The outputs of multiple converters can be stacked in series to provide higher voltages. When outputs of multiple modules are stacked, they naturally share the load. For example, two SVRTR2812S converters can be stacked to provide a 24 V output at 80 W.

6.2 FUNCTION DESCRIPTIONS

6.2.1 On/Off Control (Inhibit)

The INH (Inhibit) pin is a primary-side control pin referenced to INCOM. The INH pin must be driven using an open collector or open drain configuration. Pulling the INH pin low disables the converter output, removes bias voltage from internal control circuitry, and puts the converter in a state of minimum input current draw. Leaving INH open enables the output, allowing the converter to operate normally. The pin must be pulled below 1.5 V to disable the output. An optional capacitor from INH to INCOM may be used to delay turn-on. The INH pin should be left open if not used. INCOM 10 INH 2 28VIN OPTIONAL CAPACITOR BIAS 12V 10K

Sales Information Phone:(425) 353-3010 Fax: (425) 353-4030 SVRTR2800S - 8.0 E-mail: vptsales@vptpower.com Web: www.vptpower.com Page 9 SVRTR2800S Series

6.2.2 Adjusting the Output Voltage (+S)

The output voltage set point of the converter can be adjusted using the +S pin. To adjust the output up, connect the trim resistor from +S to OUTCOM. The maximum trim range is +10% from nominal. The appropriate resistor values versus the output voltage are given in the table below. Because the +S pin can be sensitive to external noise, the trim resistor should be located close to the SVRTR converter with short interconnects. When adjusting the output voltage, do not exceed the rated total output power or output current. The –S pin should be connected to the OUTCOM pin. SVRTR283R3S SVRTR2805S SVRTR2812S SVRTR2815S +Vout (V) Rtrim (Ω) + Vout (V) Rtrim (Ω) + Vout (V) Rtrim (Ω) + Vout (V) Rtrim (Ω) 5.00 12.2 11.4k 15.50 4k 12.1 242k 15.40 5.46k 12.0 15.30 8.57k 15.20 20k

15.10 Note 1

15.00 1. Connect Rtrim = 400Ω from +VOUT (PIN 5) to +S (PIN 6)

6.2.3 Remote Sense (+S, -S)

Remote sensing compensates for voltage drops in the output pins and traces by sensing and regulating directly at the load. The remote sense function can compensate for up to a 10% voltage drop (5% in the positive lead and 5% in the negative lead). The sum of the TRIM up and remote sense compensation cannot exceed 10% such that the voltage at the output terminals of the converter does not exceed 110% of the nominal output voltage. If not used, the user should connect +S to +VOUT and –S to OUTCOM at the pins of the converter.

6.2.4 Frequency Synchronization (SYNC)

The SVRTR2800S Series will free run at a switching frequency of approximately 525 kHz, which has been set for optimum converter performance. Frequency synchronization is not necessary unless required by system constraints. The SVRTR2800S Series provides a frequency synchronization input (SYNC) referenced to INCOM. The SYNC pin can be driven by an external clock. The internal clock and internal power train will operate at the frequency applied to the SYNC pin. The SYNC pin should be driven with a TTL type 5 V square wave signal. The duty cycle of the square wave should be between 20% and 80%. The SYNC pin is internally capacitively-coupled and the internal load is equivalent to 220 pF. Proper layout and circuit techniques are necessary to prevent noise from being injected into this pin. Synchronized converters should be located physically close together and share a low impedance INCOM connection. The SYNC pin can be left open or connected to INCOM if not used. +-2.5V Ri 100 10K 100 +VOUT5 +S6 -S3 OUTCOM4 Rtrim

Sales Information Phone:(425) 353-3010 Fax: (425) 353-4030 SVRTR2800S - 8.0 E-mail: vptsales@vptpower.com Web: www.vptpower.com Page 10 SVRTR2800S Series

6.3 PROTECTION FEATURES

6.3.1 Input Undervoltage Lockout

The SVRTR2800S Series provides input undervoltage lockout protection. For input voltages below the turn-on voltage, the converter will remain off, drawing minimal current from the source. When the input voltage exceeds the turn-on voltage, the converter will start. The lockout circuit is designed to tolerate slow ramping input voltage waveforms. VPT’s proprietary magnetic feedback technology provides bias voltage to all secondary control circuits and control amplifiers before the output starts, ensuring a well-controlled start up sequence.

6.3.2 Output Soft Start

The SVRTR2800S Series utilizes an output soft-start function to ramp the output in a controlled manner, eliminating output voltage overshoot and limiting inrush current at turn on. A voltage-mode soft-start ensures the output waveform remains consistent regardless of changes in the load current. The output rise time is approximately 8 ms. The soft-start function is active whether the module is turned on with an application of input voltage or from release of the inhibit pin. Under normal conditions, current drawn from the source during turn-on will not exceed the full-load input current. The turn-on delay time is specified from the application of input voltage (or release of the inhibit pin) until the output reaches 90% of its final value.

6.3.3 Output Overcurrent Protection

The SVRTR2800S Series provides output overcurrent and output short circuit protection. During a load fault condition, a constant output current control circuit reduces the converter duty cycle to limit the output current to approximately 125% its rated value. The converter will continue to provide constant current into any overload or short circuit condition. This feature allows the converter to start into any capacitive load. Recovery is automatic and immediate upon removal of the fault condition. Sustained short circuit or overload operation can cause excessive power dissipation. Care should be taken to control the operating temperature of the converter in this condition.

6.4 THERMAL CONSIDERATIONS

The SVRTR2800S Series 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 flow is through the baseplate and mounting flanges. The lid of the converter does not provide a good thermal path. The hybrid DC-DC converter contains many semiconductor components. The maximum temperature rise from junction to case is 20 °C at full load.

Sales Information Phone:(425) 353-3010 Fax: (425) 353-4030 SVRTR2800S - 8.0 E-mail: vptsales@vptpower.com Web: www.vptpower.com Page 11 SVRTR2800S Series

6.5 RADIATION HARDNESS ASSURANCE

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 and Radiation Lot Acceptance Testing (RLAT) of all sensitive semiconductor piece-parts used within the hybrid.

6.5.1 Radiation Test and Performance Levels

Radiation Environment Piece Part RLAT Hybrid-Level Characterization Total Ionizing Dose (TID) High Dose Rate (HDR) 100 krad(Si) 100 krad(Si) Low Dose Rate (LDR) 1100 krad(Si) 100 krad(Si) Single-Event Effects (SEE) Destructive (SEB, SEGR, SEL) Not applicable ≥ 85 MeV/mg/cm2 2Non-Destructive (SET, SEU, SEFI) Not applicable ≥ 85 MeV/mg/cm2 1. Piece-part LDR screening performed only on potentially ELDRS parts (bipolar ICs). 2. The PWM IC used in this part is suceptible to a non-destructive SEFI/SEL event with threshold LET ≥ 42 MeV/mg/cm2. The SEFI manifests as a shutdown for up to 1 second followed by a controlled soft-start of the converter. The non-destructive SEL manifests itself as a shutdown requiring user intervention to recover by cycling either the input power or the inhibit function. At the worst -case 125 °C and 85 MeV/mg/cm2, the cross-section of these events is 3.18 x 10-6 cm2. Full details available in the Radiation Test Report.

6.5.2 RHA Plan Summary

Test RHA Plan for SVR Series Isolated DC-DC Converters Total Ionizing Dose (TID): Sensitive semiconductor components undergo RLAT to 100 krad(Si) per MIL-STD-883 Method 1019. Converters are characterized to 100 krad(Si). Enhanced Low Dose Rate Sensitivity (ELDRS): All bipolar linear ICs are characterized for ELDRS and tested in accordance with MIL-STD-883 test method 1019 section 3.13 Single Event Effects (SEE): Converters are characterized to LET ≥ 85 MeV/mg/cm2 for both catastrophic events (SEL, SEB, SEGR) and functional interrupts (SEFI) under heavy ion exposure. Converters are also characterized for cross-section and magnitude of output transients (SET) for at least 3 different LET levels. Radiation Lot Acceptance Testing (RLAT): All production lots of sensitive semiconductor components undergo RLAT for TID at HDR and/or LDR as appropriate per part type.

6.5.3 RHA Designators available on SMD

The SVRTR2800S series converters are available on SMD with RHA level R. See section 8.0 for full SMD number information.

6.5.4 Supporting Documentation Available (Contact Sales)

• Radiation Hardness Assurance Plan: DLA-approved RHA plan covering TID, SEE, and ELDRS
• Worst-Case Analysis Report: Detailed worst-case analysis including electrical stress/derating limits and guaranteed circuit performance post-radiation and end of life
• Radiation Test Summary Report: Overview of piece-part RLAT and hybrid characterization for all guaranteed environments. Also includes SEE cross-section data.
• Reliability Report: MTBF report based on MIL-HDBK-217 reliability calculations.
• Thermal Analysis Report: Component temperature rise analysis and measurement results.

Sales Information Phone:(425) 353-3010 Fax: (425) 353-4030 SVRTR2800S - 8.0 E-mail: vptsales@vptpower.com Web: www.vptpower.com Page 12 SVRTR2800S Series

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. Test MIL-STD-883 Test Method, Condition /H+ (Class H + PIND) (Class K) /EM (Engineering Model) Non-QML1,6 Non-Destructive Bond Pull TM2023 ●2 ● ●2 Internal Visual TM2010, TM2017, TM2032 (MIL-STD-750, TM2072, TM2073)

• ● ● Temperature Cycling TM1010, Condition C -65 °C to 150 °C, Ambient ● ● Constant Acceleration TM2001, 3000g, Y1 Direction ● ● PIND3 TM2020, Condition A ●2 ● Pre Burn-In Electrical 25 °C ● Burn-In TM1015, 320 hrs., 125 °C, Case Typ ● TM1015, 160 hrs., 125 °C, Case Typ ● 24 hrs., 125 °C, Case Typ ● Final Electrical MIL-PRF-38534, Group A Subgroups 1-6
• ● MIL-PRF-38534, Group A Subgroups 1 and 4 25 °C Hermeticity (Seal) TM1014, Fine Leak, Condition A2 or B1 ● ● TM1014, Gross Leak, Condition C1 or B2 ● ● Gross Leak, Dip (1x10-3) ● Radiography5 TM2012 ● External Visual TM2009 ● ● ● 1. Non-QML products may not meet all requirements of MIL-PRF-38534 2. Not required per MIL-PRF-38534. Test performed for additional product quality assurance 3. PIND test Certificate of Compliance included in product shipment 4. 100% R&R testing with all test data included in product shipment 5. Radiographic test Certificate of Compliance and film(s) or data CD included in product shipment 6. Engineering models utilize only the screening specified and are not considered compliant for flight use

Sales Information Phone:(425) 353-3010 Fax: (425) 353-4030 SVRTR2800S - 8.0 E-mail: vptsales@vptpower.com Web: www.vptpower.com Page 13 SVRTR2800S Series

8.0 STANDARD MICROCIRCUIT DRAWING (SMD) NUMBERS

Do not use the SVRTR2800S Series similar part number for SMD product acquisition. It is listed for reference only. For exact specifications for the SMD product, refer to the SMD drawing. SMDs can be downloaded from the DLA Land and Maritime (Previously known as DSCC) website at https://landandmaritimeapps.dla.mil/programs/defaultapps.asp. The SMD number listed above is for standard gold-plated lead finish and “R” RHA (Radiation Hardness Assurance) level. Please reference the SMD for other screening levels, lead finishes, and radiation levels. All SMD products are marked with a “Q” on the cover as specified by the QML certification mark requirement of MIL-PRF-38534.

Sales Information Phone:(425) 353-3010 Fax: (425) 353-4030 SVRTR2800S - 8.0 E-mail: vptsales@vptpower.com Web: www.vptpower.com Page 14 SVRTR2800S Series

9.0 ORDERING INFORMATION

(1) Product Series (2) Nominal Input Voltage (3) Output Voltage (4) Number of Outputs (5) Package Option (6) Screening Code1,2,3 (7) Additional Screening Code SVRTR 28 28 Volts 3R3

3.3 Volts

5 Volts

12 Volts

15 Volts

S Single (None) F Non-Flanged Flanged /EM /H+ Engineering Model Class H + PIND Class K Contact Sales

1 Contact the VPT Sales Department for availability of Class H (/H) or Class K (/K) qualified products

2 VPT Inc. reserves the right to ship higher screened or SMD products to meet lower screened orders at our sole discretion unless specificall y forbidden by customer contract 3 Engineering models utilize only the standard screening specified and are not considered compliant for flight use. These model s are intended for low volume engineering characterization only and have no guarantee regarding operation in a radiation environment. The customer must place the following statement on each line item of their purchase order(s) for /EM units when ordering engineering models: “(Customer Name) acknowledges that the /EM unit listed in this line item is not permitted for flight use and will be used for Engineering characterization only.” Please contact your sales representative or the VPT Inc. Sales Department for more information concerning additional environmental screening and testing, different input voltage, output voltage, power requirements, source inspection, and/or special element evaluation for space or other higher quality applications.

Sales Information Phone:(425) 353-3010 Fax: (425) 353-4030 SVRTR2800S - 8.0 E-mail: vptsales@vptpower.com Web: www.vptpower.com Page 15 SVRTR2800S Series

10.0 CONTACT INFORMATION

To request a quotation or place orders please contact your sales representative or the VPT, Inc. Sales Department at: Phone: (425) 353-3010 Fax: (425) 353-4030 E-mail: vptsales@vptpower.com All information contained in this datasheet is believed to be accurate, however, no responsibility is assumed for possible errors or omissions. The products or specifications contained herein are subject to change without notice.

11.0 ADDITIONAL INFORMATION

Visit the VPT website for additional technical resources, including: Product Catalogs Application Notes and White Papers Technical Video Labs Additional Products For Avionics/Military, Hi-Rel COTS, and Space Applications