SVHF285R2SFK_技术文档

SVHF2800S SERIES

SPACE QUALIFIED HYBRID DC-DC CONVERTERS

Models Available

Input: 15 V to 50 V continuous, 80 V transient

20 W, single output of 2.5 V, 3.3 V, 5 V, 5.2 V, 5.7 V, 12 V, 15 V

Qualified to MIL-PRF-38534 Class H and Class K

SVHF Series DC-DC Converter

1.0 DESCRIPTION

1.2 SPACE LEVEL CHARACTERIZATIONS

The SVHF Series of space qualified 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

• Guaranteed TID performance to 30 krad(Si) including ELDRS

• SEE performance to 44 MeV/mg/cm². Transients are fully

characterized for cross section and magnitude

• Worst-case analysis, stress, radiation, reliability reports available

acceptance testing (RLAT) of non-hardened components, and

analysis. The SVHF 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 SVHF Series hybrid converter level.

1.3 MANUFACTURING AND COMPLIANCE

• Qualified to MIL-PRF-38534 Class H and Class K,

DLA SMD # 5962-11218

• 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

The SVHF Series of 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.

1.4 PACKAGING

• Low-profile: 2.00” x 1.130” x 0.355”

• Max weight: 28 g

• Industry standard pinout

1.1 FEATURES

• Precision projection-welded hermetic metal case

• Flanged and Non-flanged versions available

• Up to 20 W output power

• Wide input voltage range: 15 V to 50 V plus 80 V transient

• Continuous operation over full military temperature range of

-55 °C to +125 °C with no power derating

1.5 SIMILAR PRODUCTS AND ACCESSORIES

• Very low output noise

• Radiation immune magnetic feedback circuit

• No use of optoisolators

• Undervoltage lockout

• Current limit protection / short circuit protection

• SVHF 20 W dual output DC-DC converter

• SVRHF 15 W space qualified DC-DC converter, 100 krad(Si)

• Custom versions available

• EMI filters

• Non-isolated, space qualified point of load converters

• Use with Thermal Pad TP-002

Sales Information

Phone:(425) 353-3010

Fax: (425) 353-4030

Web: www.vptpower.com

SVHF2800S - 8.0

Page 1

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SVHF2800S Series

2.0 DIAGRAMS

2.1 BLOCK DIAGRAM

D1

T1

28V IN

+V OUT

L1

C2

C1

Rs2

OUT COM

IN COM

Q1

VOLTAGE AND

CURRENT

AMPLIFIERS

MAGNETIC

FEEDBACK

UNDER

VOLTAGE

SHUTDOWN

Rs1

PRIMARY

HOUSEKEEPING

SUPPLY

PWM

CONTROL

SECONDARY

HOUSEKEEPING

SUPPLY

INH

2.2 CONNECTION DIAGRAM

DVMH28 EMI FILTER

28VIN 28VOUT

SVHF2800S DC-DC CONVERTER

1

2

4

8

4

28VIN

+VOUT

LOAD

1

3

+

-

28 Vdc

INH

OUTCOM

5

7

INCOM OUTCOM

3

INCOM

6

CASE

3.0 SPECIFICATIONS

3.1 ABSOLUTE MAXIMUM RATINGS

Absolute Maximum Ratings

Input Voltage (Continuous):

-0.5 V to 50 V

-0.5 V to 80 V

2

Operating Temperature (Full Load):

Storage Temperature:

-55 °C to +125 °C

-65 °C to +150 °C

270 °C

Input Voltage (Transient, 1 second):

ESD Rating per MIL-PRF-38534:

Lead Solder Temperature (10 seconds):

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Fax: (425) 353-4030

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SVHF2800S - 8.0

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SVHF2800S Series

3.2 PERFORMANCE SPECIFICATIONS

Tcase = -55 °C to +125 °C, Vin = +28 V ± 5%, Full Load, Unless Otherwise Specified

SVHF282R5S

SVHF283R3S

Parameter

INPUT

Conditions

Min

Typ

Max

Min

Typ

Max

Units

Voltage

Continuous

15

-

28

-

50

80

15

-

28

-

50

80

V

2

Transient, 1 sec

INH < 1.5 V

No Load

Current

-

4

45

25

-

6

65

-

4

45

25

-

6

65

mA

mApp

V

Ripple Current

20 Hz to 10 MHz

Turn-On

-

80

-

80

Undervoltage Lockout

12

14.8

12

14.8

2

11

-

14.5

11

-

14.5

V

Turn-Off

OUTPUT STATIC

Voltage

Tcase = 25 °C

2.475

2.463

0

2.5

-

2.525

2.538

8

3.267

3.25

0

3.3

-

3.333

3.35

10

V

Tcase = -55 °C to +125 °C

V

4

W

Power

4

0

-

3.2

0

-

3

A

Current

Ripple Voltage

Line Regulation

Load Regulation

20 Hz to 10 MHz

-

10

2

40

20

50

-

10

2

40

20

50

mVpp

mV

Vin = 15 V to 50 V

No Load to Full Load

20

mV

2

Load Fault Power Dissipation

-

8

-

8

W

Overload

Short Circuit

OUTPUT DYNAMIC

Load Step, Half to Full Load

Output Transient

-

140

400

250

600

700

-

160

350

400

500

700

mVpk

µs

1

Recovery

2

Output Transient

mVpk

Line Step , Vin = 16 V to 40 V

1

-

300

10

0

500

20

-

300

10

0

500

20

µs

Recovery

Turn-On, Vin = 0 to 28 V

Delay

ms

Overshoot

15

mVpk

FUNCTION

2

Output Inhibited

Output Enabled

0

9

-

1.5

13

0

9

-

1.5

13

V

INH Pin Input

2

11

INH Pin Open Circuit Voltage

GENERAL

Efficiency

57

64

-

1000

500

-

65

71

-

1000

500

-

%

2

-

µF

kHz

MΩ

g

Capacitive Load

Switching Frequency

Isolation

350

450

350

450

500 V DC, Tcase = 25 °C

Non-flanged package option

Flanged package option

SF @ Tcase = 55 °C

100

-

100

-

Weight

-

24

28

-

24

28

-

g

MTBF (MIL-HDBK-217F)

776

kHr

3

POST-RAD END-OF-LIFE LIMITS

Input Ripple Current

-

110

-

110

mApp

V

Output Voltage

Tcase = -55 °C to +125 °C

2.463

2.538

3.244

3.35

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. Derate linearly to 0 at 135 °C.

Sales Information

Phone:(425) 353-3010

Fax: (425) 353-4030

Web: www.vptpower.com

SVHF2800S - 8.0

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SVHF2800S Series

3.2 PERFORMANCE SPECIFICATIONS (CONTINUED)

Tcase = -55 °C to +125 °C, Vin = +28 V ± 5%, Full Load, Unless Otherwise Specified

SVHF2805S

SVHF285R2S

Parameter

INPUT

Conditions

Min

Typ

Max

Min

Typ

Max

Units

Voltage

Continuous

15

-

28

-

50

80

15

-

28

-

50

80

V

2

Transient, 1 sec

INH < 1.5 V

No Load

Current

-

4

45

30

-

6

65

-

4

45

30

-

6

65

mA

mApp

V

Ripple Current

20 Hz to 10 MHz

Turn-On

-

80

-

80

Undervoltage Lockout

12

14.8

12

14.8

2

11

-

14.5

11

-

14.5

V

Turn-Off

OUTPUT STATIC

5.148

5.122

0

5.2

-

5.252

5.278

15

Voltage

Tcase = 25 °C

4.95

4.925

0

5

-

5.05

5.075

15

V

Tcase = -55 °C to +125 °C

V

4

W

Power

0

-

3

4

0

-

3

A

Current

-

15

2

40

20

50

8

Ripple Voltage

Line Regulation

Load Regulation

20 Hz to 10 MHz

-

15

2

40

20

50

mVpp

mV

Vin = 15 V to 50 V

No Load to Full Load

25

-

25

mV

2

Load Fault Power Dissipation

-

8

W

Overload

-

8

Short Circuit

OUTPUT DYNAMIC

-

250

450

600

Load Step, Half to Full Load

Output Transient

-

250

450

400

600

800

mVpk

µs

1

Recovery

-

400

300

800

700

2

Output Transient

mVpk

Line Step , Vin = 16 V to 40 V

1

-

300

10

0

700

20

µs

Recovery

-

10

0

20

25

Turn-On, Vin = 0 to 28 V

Delay

ms

Overshoot

25

mVpk

FUNCTION

0

9

-

1.5

13

2

Output Inhibited

Output Enabled

0

9

-

1.5

13

V

INH Pin Input

11

2

11

INH Pin Open Circuit Voltage

GENERAL

72

-

77

-

Efficiency

72

77

-

1000

500

-

%

1000

2

-

µF

kHz

MΩ

g

Capacitive Load

350

100

450

-

500

-

Switching Frequency

Isolation

350

450

500 V DC, Tcase = 25 °C

Non-flanged package option

Flanged package option

SF @ Tcase = 55 °C

100

-

Weight

-

24

28

-

24

28

-

g

427

MTBF (MIL-HDBK-217F)

776

kHr

3

POST-RAD END-OF-LIFE LIMITS

Input Ripple Current

-

110

5.1

-

110

5.3

mApp

V

Output Voltage

Tcase = -55 °C to +125 °C

4.89

5.09

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. Derate linearly to 0 at 135 °C.

Sales Information

Phone:(425) 353-3010

Fax: (425) 353-4030

Web: www.vptpower.com

SVHF2800S - 8.0

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SVHF2800S Series

3.2 PERFORMANCE SPECIFICATIONS (CONTINUED)

Tcase = -55 °C to +125 °C, Vin = +28 V ± 5%, Full Load, Unless Otherwise Specified

SVHF285R7S

SVHF2812S

Parameter

INPUT

Conditions

Min

Typ

Max

Min

Typ

Max

Units

15

-

28

-

50

80

Voltage

Continuous

15

-

28

-

50

80

V

2

Transient, 1 sec

INH < 1.5 V

No Load

-

4

45

30

-

6

Current

-

4

45

40

-

6

65

mA

mApp

V

65

-

80

Ripple Current

20 Hz to 10 MHz

Turn-On

-

80

12

11

14.8

14.5

Undervoltage Lockout

12

14.8

-

2

11

-

14.5

V

Turn-Off

OUTPUT STATIC

5.643

5.615

0

5.7

-

5.757

5.786

15

Voltage

Tcase = 25 °C

11.88

11.82

12

12.12

12.18

V

Tcase = -55 °C to +125 °C

4

0

-

20

W

Power

0

-

2.63

4

0

-

1.67

40

A

Current

-

15

2

40

20

50

8

Ripple Voltage

Line Regulation

Load Regulation

20 Hz to 10 MHz

10

2

mVpp

mV

Vin = 15 V to 50 V

No Load to Full Load

-

20

25

-

10

50

2

Load Fault Power Dissipation

-

8

W

Overload

-

8

Short Circuit

OUTPUT DYNAMIC

-

150

400

Load Step, Half to Full Load

Output Transient

-

350

250

500

900

mVpk

µs

1

Recovery

-

250

300

450

700

2

Output Transient

mVpk

Line Step , Vin = 16 V to 40 V

1

-

300

10

0

500

20

µs

Recovery

-

10

0

20

25

Turn-On, Vin = 0 to 28 V

Delay

ms

Overshoot

50

mVpk

FUNCTION

0

9

-

1.5

13

2

Output Inhibited

Output Enabled

0

9

-

1.5

13

V

INH Pin Input

11

2

11

INH Pin Open Circuit Voltage

GENERAL

72

-

77

-

Efficiency

77

-

84

-

%

1000

2

500

µF

Capacitive Load

350

100

450

-

500

-

Switching Frequency

Isolation

350

450

500

-

kHz

MΩ

g

500 V DC, Tcase = 25 °C

Non-flanged package option

Flanged package option

SF @ Tcase = 55 °C

100

-

Weight

-

24

28

-

24

28

-

g

427

MTBF (MIL-HDBK-217F)

776

kHr

3

POST-RAD END-OF-LIFE LIMITS

Input Ripple Current

-

110

-

110

mApp

V

Output Voltage

Tcase = -55 °C to +125 °C

5.557

5.843

11.66

12.3

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. Derate linearly to 0 at 135 °C.

Sales Information

Phone:(425) 353-3010

Fax: (425) 353-4030

SVHF2800S - 8.0

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Web: www.vptpower.com

SVHF2800S Series

SVHF2815S

Parameter

INPUT

Conditions

Min

Typ

Max

Units

Voltage

Continuous

15

-

28

-

50

80

V

2

V

Transient, 1 sec

INH < 1.5 V

No Load

Current

-

4

6

mA

mApp

V

-

45

40

-

65

Ripple Current

20 Hz to 10 MHz

Turn-On

-

80

Undervoltage Lockout

12

11

14.8

14.5

2

-

V

Turn-Off

OUTPUT STATIC

Voltage

Tcase = 25 °C

14.85

14.775

0

15

-

15.15

15.225

20

V

Tcase = -55 °C to +125 °C

V

4

W

Power

4

0

-

10

2

1.34

40

20

50

8

A

Current

Ripple Voltage

20 Hz to 10 MHz

mVpp

mV

W

Line Regulation

Vin = 15 V to 50 V

No Load to Full Load

-

Load Regulation

-

10

-

2

Load Fault Power Dissipation

-

Overload

Short Circuit

-

8

W

OUTPUT DYNAMIC

Load Step, Half to Full Load

Output Transient

-

350

250

500

mVpk

µs

1

Recovery

2

Output Transient

-

500

300

900

500

mVpk

µs

Line Step , Vin = 16 V to 40 V

1

Recovery

Turn-On, Vin = 0 to 28 V

Delay

-

10

0

20

50

ms

Overshoot

mVpk

FUNCTION

2

Output Inhibited

Output Enabled

0

9

-

1.5

13

V

INH Pin Input

2

11

INH Pin Open Circuit Voltage

GENERAL

Efficiency

78

-

85

-

%

2

500

µF

Capacitive Load

Switching Frequency

Isolation

350

450

500

-

kHz

MΩ

g

500 V DC, Tcase = 25 °C

Non-flanged package option

Flanged package option

SF @ Tcase = 55 °C

100

-

Weight

-

24

28

-

g

MTBF (MIL-HDBK-217F)

776

kHr

3

POST-RAD END-OF-LIFE LIMITS

Input Ripple Current

-

110

mApp

V

Output Voltage

Tcase = -55 °C to +125 °C

14.565

15.4

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. Derate linearly to 0 at 135 °C.

Sales Information

Phone:(425) 353-3010

Fax: (425) 353-4030

SVHF2800S - 8.0

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Web: www.vptpower.com

SVHF2800S Series

4.0 PERFORMANCE CURVES

4.1.1 SVHF282R5S Efficiency (Typical, 25 °C)

4.1.2 SVHF283R3S Efficiency (Typical, 25 °C)

4.1.3 SVHF2805S Efficiency (Typical, 25 °C)

4.1.4 SVHF285R2S Efficiency (Typical, 25 °C)

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SVHF2800S Series

4.1.5 SVHF285R7S Efficiency (Typical, 25 °C)

4.1.6 SVHF2812S Efficiency (Typical, 25 °C)

4.1.7

SVHF2815S Efficiency (Typical, 25 °C)

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SVHF2800S 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 (Steel, nickel plated); Pin (Copper-cored alloy 52, gold over nickel plated); Pin Seals (Glass)

Pin Function

1

2

3

INH

4

5

6

+VOUT

7

INCOM

NC

8

28VIN

OUTCOM

CASE

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SVHF2800S 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 # 4-40 screw

3. Materials: Case (Steel, gold over nickel plated); Cover (Steel, nickel plated); Pin (Copper-cored alloy 52, gold over nickel plated); Pin Seals (Glass)

Pin Function

1

2

3

INH

4

5

6

+VOUT

7

INCOM

NC

8

28VIN

OUTCOM

CASE

Sales Information

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SVHF2800S 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 SVHF2800S 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 SVHF2800S 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 SVHF2812S can

provide +12 V DC 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 SVHF2812S converters can be stacked to provide a 24 V output at 40 W.

6.2 FUNCTION DESCRIPTIONS

8

6.2.1 On/Off Control (Inhibit)

28VIN

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.

10K

12V

INH

1

BIAS

OPTIONAL

CAPACITOR

INCOM

7

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SVHF2800S Series

6.3 PROTECTION FEATURES

6.3.1 Input Undervoltage Lockout

The SVHF2800S 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 SVHF2800S 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 SVHF2800S 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 SVHF2800S 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

12 °C at full load.

Sales Information

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Fax: (425) 353-4030

SVHF2800S - 8.0

Page 12

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SVHF2800S Series

6.5 VPT RHA PLAN AND APPROACH

VPT takes a conservative approach to radiation testing to ensure product performance during space travel. 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 TID, SEE, and ELDRS.

Documents Available

Details

The radiation environments covered by this overview include: total ionizing dose (TID), which

includes enhanced low dose rate sensitivity (ELDRS); and single event effects (SEE).

DLA approved Radiation Hardness Assurance (RHA) Plan Summary

Worst-Case Analysis Report

Stress Report

Detailed worst-case analysis guarantees circuit performance post radiation and end of life.

Individual component stress analysis and deratings are included as part of the WCA report.

An overview report on the component level RLAT and characterization testing for TID and DD

as well as the hybrid level characterizations for TID and SEE response.

Radiation Test Summary Report

Reliability Report

MTBF report based on MIL-HDBK-217 reliability calculations.

Component temperature rise analysis and measurement results.

Thermal Analysis Report

Test Definition

VPT’s Approach

Total Ionizing Dose (TID). A measure of the energy absorbed in the

semiconductor components from the naturally occurring sources of

radiation (protons, electrons, photons). This results in the slow

degradation of semiconductor performance specifications. TID is tested

by exposing components to gamma radiation from a Cobalt-60 source.

Designed for 30 krad(Si). Sensitive semiconductor components undergo RLAT to 60 krad(Si)

per MIL-STD-883 Method 1019. Converters are characterized to 60 krad(Si).

Enhanced Low Dose Rate Sensitivity (ELDRS): Many linear-bipolar

integrated circuits show enhanced parameter degradation when exposed

at low dose rates close to those seen in a space environment as

compared to the high dose rates (50-300 rad(Si)/s) that components were

traditionally tested at for TID degradation. MIL-STD-883 Method 1019

gives guidance for characterizing components for ELDRS. Components

that exhibit ELDRS are tested for TID at a rate below 0.01 rad(Si)/s.

All bipolar linear ICs are characterized for ELDRS sensitivity and tested in accordance with

MIL-STD-883 test method 1019 section 3.13

Single Event Effects (SEE). Single high energy protons and heavy ions

can deposit sufficient energy in a semiconductor component, causing a

range of effects. SEEs include single event latchups (SELs), single event

gate ruptures (SEGRs), single event transients (SETs), single event

functional interrupts (SEFIs) and single event burnouts (SEBs).

Converters are characterized for catastrophic events (SEL, SEB, SEGR) as well as functional

interrupts (SEFI) under heavy ion exposure to LET = 44 MeV-cm²/mg. 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): Semiconductor wafer lots are

exposed to TID on a sample basis. If the parameter degradation for the

tested samples is within the predetermined acceptance limits, then the lot

can be used in radiation hardened converters.

Sensitive semiconductor components undergo RLAT for TID.

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SVHF2800S - 8.0

Page 13

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SVHF2800S 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.

/EM

/H+

/K

(Engineering Model)

Non-QML^1,6

MIL-STD-883 Test

Method, Condition

Test

(Class H + PIND)

(Class K)

Non-Destructive

Bond Pull

2

TM2023

●

TM2010, TM2017, TM2032

(MIL-STD-750, TM2072,

TM2073)

Internal Visual

●

TM1010, Condition C

-65 °C to 150 °C, Ambient

Temperature

Cycling

●

Constant

Acceleration

TM2001, 3000g, Y1

Direction

●

3

2

TM2020, Condition A

25 °C

PIND

●

Pre Burn-In

Electrical

TM1015, 320 hrs.,

125 °C, Case Typ

●

TM1015, 160 hrs.,

125 °C, Case Typ

Burn-In

●

24 hrs., 125 °C, Case Typ

●

MIL-PRF-38534, Group A

Subgroups 1-6

●

4

-55 °C, 25 °C, 125 °C

Final Electrical

MIL-PRF-38534, Group A

Subgroups 1 and 4

25 °C

TM1014, Fine Leak,

Condition A2 or B1

●

Hermeticity

(Seal)

TM1014, Gross Leak,

Condition C or B2

Gross Leak, Dip (1x10^-3)

TM2012

●

5

●

Radiography

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

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

3. PIND test Certificate of Compliance included in product shipment

6. Engineering models utilize only the screening specified and are not considered

compliant for flight use

Sales Information

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Web: www.vptpower.com

SVHF2800S - 8.0

Page 14

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SVHF2800S Series

8.0 STANDARD MICROCIRCUIT DRAWING (SMD) NUMBERS

Standard Microcircuit SVHF2800S Series

Drawing Number Similar Part Number

Standard Microcircuit SVHF2800S Series

Drawing Number Similar Part Number

SVHF283R3S/H+

SVHF283R3S/H+-E

SVHF283R3SF/H+

SVHF283R3SF/H+-E

SVHF283R3S/K

SVHF283R3S/K-E

SVHF283R3SF/K

SVHF283R3SF/K-E

SVHF285R2S/H+

SVHF285R2S/H+-E

SVHF285R2SF/H+

SVHF285R2SF/H+-E

SVHF285R2S/K

SVHF285R2S/K-E

SVHF285R2SF/K

SVHF285R2SF/K-E

5962P1121801HXC

5962P1121801HXA

5962P1121801HYC

5962P1121801HYA

5962P1121801KXC

5962P1121801KXA

5962P1121801KYC

5962P1121801KYA

5962P1121806HXC

5962P1121806HXA

5962P1121806HYC

5962P1121806HYA

5962P1121806KXC

5962P1121806KXA

5962P1121806KYC

5962P1121806KYA

SVHF2805S/H+

SVHF2805S/H+-E

SVHF2805SF/H+

SVHF2805SF/H+-E

SVHF2805S/K

SVHF2805S/K-E

SVHF2805SF/K

SVHF2805SF/K-E

SVHF285R7S/H+

SVHF285R7S/H+-E

SVHF285R7SF/H+

SVHF285R7SF/H+-E

SVHF285R7S/K

SVHF285R7S/K-E

SVHF285R7SF/K

SVHF285R7SF/K-E

5962P1121802HXC

5962P1121802HXA

5962P1121802HYC

5962P1121802HYA

5962P1121802KXC

5962P1121802KXA

5962P1121802KYC

5962P1121802KYA

5962P1121807HXC

5962P1121807HXA

5962P1121807HYC

5962P1121807HYA

5962P1121807KXC

5962P1121807KXA

5962P1121807KYC

5962P1121807KYA

SVHF2812S/H+

SVHF2812S/H+-E

SVHF2812SF/H+

SVHF2812SF/H+-E

SVHF2812S/K

SVHF2812S/K-E

SVHF2812SF/K

SVHF2812SF/K-E

5962P1121803HXC

5962P1121803HXA

5962P1121803HYC

5962P1121803HYA

5962P1121803KXC

5962P1121803KXA

5962P1121803KYC

5962P1121803KYA

SVHF2815S/H+

SVHF2815S/H+-E

SVHF2815SF/H+

SVHF2815SF/H+-E

SVHF2815S/K

SVHF2815S/K-E

SVHF2815SF/K

SVHF2815SF/K-E

5962P1121804HXC

5962P1121804HXA

5962P1121804HYC

5962P1121804HYA

5962P1121804KXC

5962P1121804KXA

5962P1121804KYC

5962P1121804KYA

SVHF282R5S/H+

SVHF282R5S/H+-E

SVHF282R5SF/H+

SVHF282R5SF/H+-E

SVHF282R5S/K

SVHF282R5S/K-E

SVHF282R5SF/K

SVHF282R5SF/K-E

5962P1121805HXC

5962P1121805HXA

5962P1121805HYC

5962P1121805HYA

5962P1121805KXC

5962P1121805KXA

5962P1121805KYC

5962P1121805KYA

Do not use the SVHF2800S 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 represents

the Federal Stock Class, Device Type, Device Class Designator, Case Outline, Lead Finish and RHA Designator (where applicable).

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.

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SVHF2800S - 8.0

Page 15

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SVHF2800S Series

9.0 ORDERING INFORMATION

SVHF

28

05

S

F

/K

-

XXX

1

2

3

4

5

6

7

(1)

(2)

(3)

(4)

(5)

(6)

(7)

Product

Series

Nominal Input

Voltage

Output Voltage

Number of

Outputs

Package Option

Screening

Additional

Screening

Code

Code^1,2,3

SVHF

28 28 Volts

2R5 2.5 Volts

3R3 3.3 Volts

05 5 Volts

S

Single

(None)

Non-Flanged

Flanged

/EM Engineering Model

/H+ Class H + PIND

/K Class K

Contact Sales

F

5R2 5.2 Volts

5R7 5.7 Volts

12 12 Volts

15 15 Volts

1

2

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

VPT Inc. reserves the right to ship higher screened or SMD products to meet lower screened orders at our sole discretion unless specifically forbidden by customer

contract

3

Engineering models utilize only the standard screening specified and are not considered compliant for flight use. These models 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

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SVHF2800S - 8.0

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Web: www.vptpower.com

SVHF2800S 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:

Fax:

(425) 353-3010

(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

Sales Information

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型号：	SVHF285R2SFK
厂家：	VPT, Inc.
描述：	SPACE QUALIFIED HYBRID DC-DC CONVERTERS DC-DC转换器
文件：	总17页 (文件大小：819K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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