MSA2815S_技术文档

FEATURES

• –55° to +125°C operation

• 16 to 40 VDC input

• Fully isolated

• Optocoupler feedback

• Fixed frequency, 550 kHz typical

(400 kHz typ. 60 V output model)

• Topology – Flyback

• 50 V for up to 50 ms transient protection

• Inhibit function

MSA SERIES

5 WATT

DC/DC CONVERTERS

28 VOLT NPUT

I

MODELS

VDC OUTPUT

SINGLE

DUAL

5

5.2

12

15

60

12

15

• Indefinite short circuit protection

• Up to 76% efficiency, 16 W/in

3

Size (max.): 1.075 x 1.075 x 0.270 inches (27.31 x 27.31 x 6.86 mm)

Weight:

15 grams maximum.

Screening:

Standard, ES, or 883 (Class H).

DESCRIPTION

WIDE VOLTAGE RANGE

The MSA converters are designed to provide full power operation

over a full 16 to 40 VDC voltage range. Operation below 16 volts,

including MIL-STD-704E emergency power conditions is possible

with derated power. Please refer to the low line dropout graphs

(Figures 17 and 18) for details. A low voltage lockout feature keeps

the converter shutdown below approximately 13 VDC to ensure

smooth initialization.

The MSA Series™ of high frequency DC/DC converters offers a new

standard of performance for low power, military/aerospace grade

DC/DC converters. MSA parts provide up to 5 watts output power

over the full military temperature range with up to 76% efficiency.

Thick-film hybrid techniques provide military/aerospace reliability

levels and optimum miniaturization. The hermetically sealed case is

only 1.075 by 1.075 inches — with a height of only 0.270 inches.

Power density for the MSA Series parts is 16 watts per cubic inch.

IMPROVED DYNAMIC RESPONSE

The MSA feed-forward compensation system provides excellent

dynamic response and noise rejection. Audio rejection is typically 50

dB. The minimum to maximum step line transient response is typi-

cally less than 1%.

The MSA Series’ small size, low height, and hermetically sealed

metal enclosures make them ideal for use in military, aerospace and

other high reliability applications. Units are available with standard,

screening, “ES”, and fully compliant SMD “883” screening. See

page 8 for screening options and descriptions.

INHIBIT FUNCTION

MSA converters provide a TTL open collector-compatible inhibit

feature that can be used to disable internal switching and inhibit the

unit’s output. Inhibiting in this manner results in low standby current,

and no generation of switching noise.

CONVERTER DESIGN

The MSA converters are switching regulators that use a flyback

converter design with a constant switching frequency of 550 kHz.

They are regulated, isolated units using a pulse width modulated

topology and built as high reliability thick-film hybrids. Isolation

between input and output circuits is provided with a transformer in

the forward power path and an optical link in the feedback control

loop. Excellent input line transient response and audio rejection is

achieved by an advanced feed-forward compensation technique.

Negative output regulation is maintained by tightly coupled

magnetics. Up to 4 watts, 80% of the total output power, is available

from either output, provided that the opposite output is simultane-

ously carrying 20% of the total power. Each output must carry a

minimum of 20% of the total output power in order to maintain spec-

ified regulation on the negative output. Predictable current limit is

accomplished by direct monitoring of the output load current, which

results in a constant current output above the overload point.

Internal input and output filters eliminate the need for external

capacitors.

The converter is inhibited when the TTL compatible low (≤0.8 V) is

applied to the inhibit pin. The unit is enabled when the pin, which is

internally connected to a pull-up resistor, is left unconnected or is

connected to an open collector gate. The open circuit output voltage

associated with the inhibit pin is 9 to 11 V. In the inhibit mode, a

maximum of 4 mA must be sunk from the inhibit pin.

UNDERVOLTAGE LOCKOUT AND TRANSIENT

PROTECTION

Undervoltage lockout helps keep system current levels low during

initialization or re-start operations. They can withstand short term

transients of up to 50 volts without damage.

1

MSA SERIES

5 WATT

DC/DC CONVERTERS

ABSOLUTE MAXIMUM RATINGS

INHIBIT

TYPICAL CHARACTERISTICS

Input Voltage

• 16 to 40 V

Output Power

• 5 watts

Lead Soldering Temperature (10 sec per lead)

• 300°C

Storage Temperature Range (Case)

• –65°C to +135°C

Inhibit TTL Open Collector

• Logic low (output disabled)

Logic low voltage ≤0.8 V max

Inhibit pin current 4 mA max

• Referenced to input common

• Logic high (output enabled)

Open collector

Output Voltage Temperature Coefficient

• 100 ppm/°C typical

Input to Output Capacitance

• 50 pF typical

Isolation

• 100 megohm minimum at 500 V

Audio Rejection

• 50 dB typical

Conversion Frequency

• 550 kHz typical (400 kHz 60 V model)

450 kHz min, 600 kHz max

350 kHz min, 450 kHz max 60 V model

Inhibit Pin Voltage (unit enabled)

• 9 to 11 V

RECOMMENDED OPERATING CONDITIONS

Input Voltage Range

• 16 to 40 VDC continuous

• 50 V for up to 50 msec transient

Case Operating Temperature (Tc)

• –55°C to +125°C full power

• –55°C to +135°C absolute

Derating Output Power/Current (Tc)

• Linearly from 100% at 125°C to 0% at 135°C

Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.

1

SINGLE OUTPUT MODELS

PARAMETER

MSA2805S

MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX

Tc = –55°C TO +125°C 4.95 5.00 5.05 5.15 5.20 5.25 11.88 12.00 12.12 14.85 15.00 15.15 59.1 60.00 60.9

MSA285R2S

MSA2812S

MSA2815S

MSA2860S

CONDITIONS

UNITS

VDC

OUTPUT VOLTAGE

OUTPUT CURRENT

Tc = –55°C TO +125°C

V

= 16 TO 40 VDC

0

—

1000

5

0

—

962

5

0

—

417

5

0

—

333

5

0

—

20

mA

W

IN

OUTPUT POWER

IN

Tc = –55°C TO +125°C

—

1.2

OUTPUT RIPPLE

VOLTAGE

LINE REGULATION

10 kHz - 2 MHz

= 16 TO 40 VDC

IN

Tc = –55°C TO +125°C

NO LOAD TO FULL

Tc = –55°C TO +125°C

CONTINUOUS

TRANSIENT 50 ms

NO LOAD

FULL LOAD

INHIBITED

10 kHz - 10 MHz

Tc = –55°C TO +125°C

—

125 350

2

—

110 335

—

50

10

200

50

—

50 170

—

300

mV p-p

mV

V

10

50

10

50

10

50

LOAD REGULATION

10

50

mV

INPUT VOLTAGE

NO LOAD TO FULL

16

0

28

—

27

250

3

40

50

40

—

16

0

28

—

28

250

3

40

50

40

—

16

0

28

—

29

235

3

25

30

76

1.2

1

40

50

42

—

16

0

28

—

31

235

3

40

50

44

—

5

16

0

28

—

72

3

—

75

—

40

50

30

—

5

90

—

VDC

V

INPUT CURRENT

Tc = –55°C TO +125°C

—

66

—

66

—

70

—

71

—

70

—

mA

5

INPUT RIPPLE

CURRENT

25

30

71

100

150

—

25

30

71

1.5

100

150

—

2.0

25

100

150

—

1.9

10

25 100

30 150

mA p-p

EFFICIENCY

LOAD FAULT

76

1.2 1.8

10

—

%

W

ms

3, 4

POWER DISSIPATION

RECOVERY

50% - 100% - 50%

TRANSIENT

1.5

12.5

2.0

25

SHORT CIRCUIT

STEP LOAD

1

4, 5

RESPONSE

—

100 250

—

100 250

—

150 375

200 500

—

200 500

—

mV pk

µs

RECOVERY

STEP LINE

RESPONSE

TRANSIENT

16 TO 40 V

IN

4, 5

—

50

150

—

50

150

—

80

200

—

50 125

—

mV pk

µs

40 TO 16 V

IN

100 250

RECOVERY

16 TO 40 V

IN

—

100 250

200 500

—

100 250

200 500

—

250 625

—

250 625

—

40 TO 16 V

IN

START-UP

Notes

DELAY

OVERSHOOT

—

10

0

25

50

—

10

0

25

50

—

3

0

10

120

—

3

0

10

150

—

ms

mV pk

1. MSA2860S specifications are at 25°Tc only, contact your Interpoint

representative for more information on over temperature specs.

3. Indefinite short circuit protection not guaranteed above 125°C (case).

4. Recovery time is measured from application of the transient to point at which

2. Line regulation for /ES and non /ES 2805S models at 16 to 17 V and 110

°C to 125°C (case) is 5% (max).

V

is within 1% of V at final value.

OUT

IN

OUT

5. Transition time >10µs.

2

MSA SERIES

5 WATT

DC/DC CONVERTERS

Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.

DUAL OUTPUT MODELS

MSA 2805D

MSA2812D

MSA2815D

MIN TYP

PARAMETER

CONDITIONS

MIN

4.95

4.9

TYP

5.00

5.0

MAX

MIN

TYP

11.88 12.00

11.76 12.00

MAX

12.12

12.24

MAX

UNITS

OUTPUT VOLTAGE

+V

5.05

5.1

14.85 15.00 15.15

14.70 15.00 15.30

OUT

VDC

–V

OUT

1

OUTPUT CURRENT

V

= 16 to 40 VDC

IN

Tc = –55°C to +125°C

—

500

800

—

208

333

—

167

267

mA

1

OUTPUT POWER

V

= 16 to 40 VDC

IN

Tc = –55°C to +125°C

—

5

—

5

—

5

W

OUTPUT RIPPLE VOLT.

10 kHz - 2 MHz

150

40

140

60

150

mV p-p

LINE REGULATION

Vin = 16 to 40 VDC

Tc = –55°C to +125°C

+V

—

10

40

25

75

—

10

40

50

—

10

40

50

OUT

mV

–V

180

OUT

LOAD REGULATION

NO LOAD TO FULL

Tc = –55°C to +125°C

+V

—

10

50

—

10

50

—

10

50

OUT

–V

200

OUT

2

CROSS REGULATION

+P = 20 - 80 %, –P = 80 - 20%

O

—

10

5

20

8

—

8

15

6

—

7

3

15

6

–P = 20 - 80 %, +P = 80 - 20%

O

%

+P = 50 - 10 %, –P = 50%

O

3.7

–P = 50 - 10 %, +P = 50%

O

NO LOAD TO FULL

˜CONTINUOUS

INPUT VOLTAGE

Tc = –55°C to +125°

16

28

40

16

28

40

16

28

40

VDC

V

TRANSIENT 50 msec

NO LOAD

—

50

35

—

50

58

—

50

60

INPUT CURRENT

30

33

38

Tc = –55°C to +125°C

FULL LOAD

INHIBITED

—

68

248

3

—

5

—

69

235

3

—

5

—

70

235

3

—

5

mA

INPUT RIPPLE

CURRENT

10 kHz TO 10 MHz

Tc = –55°C to +125°C

25

30

72

80

160

—

25

30

75

100

150

—

25

30

75

100

150

—

mA p-p

%

EFFICIENCY

3, 4

LOAD FAULT

POWER DISSIPATION

SHORT CIRCUIT

—

1.3

—

1.8

50

—

1.3

1

1.7

10

—

1.3

1

1.6

10

W

RECOVERY

50% - 100% - 50% BALANCED

TRANSIENT

ms

STEP LOAD

4, 5

RESPONSE

—

150

100

—

300

200

750

500

—

300

500

750

mV

µs

RECOVERY

1250

4, 5

STEP LINE RESP.

16 TO 40 VDC

—

750

500

—

50

150

400

3

125

375

1000

10

—

150

100

250

800

3

375

250

625

2000

10

mV pk

µs

TRANSIENT

40 TO 16 VDC

16 TO 40 VDC

1200

25

RECOVERY

40 TO 16 VDC

START-UP

DELAY

ms

OVERSHOOT

500

0

120

0

150

mV pk

Notes

1. Up to 4 watts (80% of full power) is available from either output providing the

opposite output is carrying 20% of total power.

3. Indefinite short circuit protection not guaranteed above 125°C (case).

4. Recovery time is measured from application of the transient to point at which

2. Shows regulation effect on the minus output during the defined cross loading

conditions. See Figures 15 and 16.

V

is within 1% of V at final value.

OUT

5. Transition time >10µs.

3

MSA SERIES

5 WATT

DC/DC CONVERTERS

PIN OUT

1

Single Output Dual Output

Positive Output Positive Output

Output Common Output Common

2

3

4

5

6

7

8

No connection

Inhibit

Negative Output

No connection

Inhibit

Positive Input

Input Common

Case Ground

Positive Input

Input Common

Case Ground

Squared corner and dot on top

of package indicate pin one.

1

8

2

3

4

5

6

BOTTOM VIEW

MSA

7

See page 7 for dimensions.

FIGURE 1: PIN OUT BOTTOM VIEW

SMD NUMBERS

STANDARD MICROCIRCUIT

DRAWING (SMD)

MSA SERIES

SIMILAR PART

MODEL NUMBERING KEY

5962-9309201HXC

IN PROCESS

MSA2805S/883

MSA285R2S/883

MSA2812S/883

MSA2815S/883

MSA2860S/883

MSA2812D/883

MSA2815D/883

MSA 28 12

D / 883

Base Model

5962-9309301HXC

5962-9309401HXC

5962-0052201HXC

5962-9308901HXC

5962-9309001HXC

Input Voltage

Output Voltage

(R = decimal point, 5R2 = 5.2 Vout)

Number of Outputs

(S = single, D = dual)

Screening

(Standard screening has no designator

in this position.)

For exact specifications for an SMD product, refer to the SMD

drawing. Call your Interpoint representative for status on

MSA SMD releases. “883” suffix indicates SMD similar part.

SMDs can be downloaded from:

http://www.dscc.dla.mil/programs/smcr

4

MSA SERIES

5 WATT

DC/DC CONVERTERS

Typical Performance Curves: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.

80

70

60

50

40

30

80

70

60

50

40

30

16V

70

60

50

40

30

28V

40V

1

2

3

4

5

6

1

2

3

4

5

6

1

2

3

4

5

6

OUTPUT POWER (Watts)

MSA2805S EFFICIENCY

OUTPUT POWER (Watts)

MSA2815S EFFICIENCY

OUTPUT POWER (Watts)

MSA2812S EFFICIENCY

FIGURE 2

FIGURE 3

FIGURE 4

80

70

60

50

40

30

16V

10

20

30

40

50

60

70

80

90

100

V

IN

40V

28V

V

OUT

1

2

3

4

5

6

0.1

1

10

100

100µs/div

OUTPUT POWER (Watts)

MSA2815D EFFICIENCY

FREQUENCY (kHz)

MSA SERIES AUDIO REJECTION

16V TO 40V

MSA2805S STEP LINE RESPONSE

FIGURE 5

FIGURE 6

FIGURE 7

100% to 10%

100% to 50%

V

IN

10% to 100%

50% to 100%

V

OUT

100µs/div

1 ms / div

100µs/div

10% 100%

50% 100%

MSA2805S TURN-ON INTO NO LOAD

MSA2805S STEP LOAD RESPONSE

FIGURE 8

FIGURE 9

FIGURE 10

50% to 10%

–P =2.5W

OUT

–P

=0.5W

OUT

V

90% to 10%

IN

+V

OUT

–V

OUT

10% to 90%

10% to 50%

200µs/div

16V TO 40V

100µs/div

10% 50%)

200µs/div

10% 90%

MSA2815D INPUT STEP LINE RESPONSE

MSA2815D +V STEP LOAD RESPONSE

O

FIGURE 12

FIGURE 13

FIGURE 11

5

MSA SERIES

5 WATT

DC/DC CONVERTERS

Typical Performance Curves: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.

5

4

10

8

2812D

3

6

2

4

2812D

COND A

COND B

V

IN

1

2

0

+V

2815D

OUT

0

2815D

–1

–2

–3

–4

–5

–2

–4

–6

–8

–10

–V

2812D

30

10

20

40

50

90/10 70/30 50/50 30/70 10/90

500µs/div

OUTPUT LOAD (%)

OUTPUT LOAD (+V % / –V

90–10% LOAD on +V, 10-90% LOAD on –V

MSA DUAL CROSS REGULATION

%)

OUT

MSA2815D TURN-ON INTO NO LOAD

COND. A: 50% LOAD +V; 10% to 50% –V

COND. B: 50% LOAD –V; 10% to 50% +V

MSA DUAL CROSS REGULATION

FIGURE 14

FIGURE 15

FIGURE 16

17

MSA2805S

16

MSA2815D

16

15

14

13

12

15

MSA2812S

14

13

MSA2812D

MSA2815S

12

1

2

3

4

5

6

1

2

3

4

5

6

OUTPUT POWER (Watts)

50 mV DROP

LOW LINE DROPOUT VS. LOAD

OUTPUT POWER (Watts)

50 mV DROP

LOW LINE DROPOUT VS. LOAD

FIGURE 17

FIGURE 18

6

MSA SERIES

5 WATT

DC/DC CONVERTERS

Dot on top of case

indicates pin one

Materials

Header Cold Rolled Steel/Nickel/Gold

Cover Cold Rolled Steel/Nickel

CASE C

BOTTOM VIEW

See Figure 20

Pins

Copper/Nickel/Gold

compression glass seal

1.075 max

(27.31)

for pin configurations.

Case dimensions in inches (mm)

Tolerance

0.005 (0.13) for three decimal places

0.01 (0.3) for two decimal places

unless otherwise specified

1.075 max

(27.31)

CAUTION

Heat from reflow or wave soldering may

damage the device. Solder pins

individually with heat application not

exceeding 300°C for 10 seconds per

pin.

FIGURE 19: CASE C MAXIMUM DIMENSIONS

BOTTOM VIEW CASE C1

MSA Series: Screening – Standard, ES, or 883

Projection Weld

Squared corner and dot on

top of case indicate pin one.

Seam Seal

0.932

(23.67)

1

8

2

3

7

4

5

0.025

(0.64)

dia.

6

0.132

(3.35)

0.000

FIGURE 20: CASE C1

Note: Although every effort has been made to render the case drawings at actual size, variations in the printing process may cause some distortion. Please refer

to the numerical dimensions for accuracy.

7

MSA SERIES

5 WATT

DC/DC CONVERTERS

E

NVIRONMENTAL CREENING

S

TEST (125°C Products)

STANDARD

/ES

/883 (Class H)*

PRE-CAP INSPECTION

Method 2017, 2032

yes

TEMPERATURE CYCLE (10 times)

Method 1010, Cond. C, -65°C to 150°C

Method 1010, Cond. B, -55°C to 125°C

no

yes

no

CONSTANT ACCELERATION

Method 2001, 3000 g

Method 2001, 500 g

no

yes

no

BURN-IN

Method 1015, 160 hours at 125°C

96 hours at 125°C case (typical)

no

yes

no

FINAL ELECTRICAL TEST MIL-PRF-38534, Group A

Subgroups 1 through 6: -55°C, +25°C, +125°C

Subgroups 1 and 4: +25°C case

no

yes

no

yes

no

HERMETICITY TESTING

Fine Leak, Method 1014, Cond. A

Gross Leak, Method 1014, Cond. C

Gross Leak, Dip (1 x 10 )

no

yes

no

yes

no

-3

FINAL VISUAL INSPECTION

Method 2009

yes

Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534.

*883 products are built with element evaluated components and are 100% tested and guaranteed over

the full military temperature range of –55°C to +125°C.

Contact Information:

www.interpoint.com

Interpoint Headquarters USA

Phone: 1-800-822-8782

+425-882-3100

Interpoint UK

Phone: +44-1252-815511

Interpoint France

Phone: +33-134285455

Email:

poweruk@intp.com

Email:

powerfr@intp.com

Email:

power@intp.com

22021-001-DTS Rev C This revision supercedes all previous releases.

All technical information is believed to be accurate, but no responsibility is

assumed for errors or omissions. Interpoint reserves the right to make changes in

products or specifications without notice. MSA Series is a trademark of Interpoint.

8


型号：	MSA2815S
厂家：	Crane Aerospace & Electronics.
描述：	Analog Circuit, Hybrid, MDIP10, 输入元件
文件：	总8页 (文件大小：116K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

MSA2815S [CRANE]

相关型号：

MSA2815S/883

MSA2815S/883

MSA2815S/ES

MSA2815S/SX

MSA285.2S

MSA285.2S/883

MSA285R2S

MSA285R2S/883

MSA285R2S/ES

MSA285R2S/SX

MSA2860S

MSA2860S