Crane MSA2812S/883 Dc/dc converters 28 volt input Datasheet

FEATURES
•
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•
•
•
•
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•
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DC/DC CONVERTERS
28 VOLT INPUT
–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
Indefinite short circuit protection
Up to 76% efficiency, 16 W/in3
Size (max.):
Weight:
Screening:
MSA SERIES
5 WATT
MODELS
VDC OUTPUT
SINGLE
5
5.2
12
15
60
DUAL
±5
±12
±15
1.075 x 1.075 x 0.270 inches (27.31 x 27.31 x 6.86 mm)
15 grams maximum.
Standard, ES, or 883 (Class H).
DESCRIPTION
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.
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.
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 simultaneously carrying 20% of the total power. Each output must carry a
minimum of 20% of the total output power in order to maintain specified 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.
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.
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 typically less than 1%.
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.
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
DC/DC CONVERTERS
MSA SERIES
5 WATT
ABSOLUTE MAXIMUM RATINGS
TYPICAL CHARACTERISTICS
INHIBIT
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.
SINGLE OUTPUT MODELS
PARAMETER
CONDITIONS
OUTPUT VOLTAGE
Tc = –55°C TO +125°C
OUTPUT CURRENT
Tc = –55°C TO +125°C VIN = 16 TO 40 VDC
OUTPUT POWER
OUTPUT RIPPLE
VOLTAGE
LINE REGULATION
LOAD REGULATION
INPUT VOLTAGE
NO LOAD TO FULL
INPUT CURRENT
Tc = –55°C TO +125°C
INPUT RIPPLE
CURRENT
EFFICIENCY
LOAD FAULT3, 4
SHORT CIRCUIT
STEP LOAD
RESPONSE4, 5
STEP LINE
RESPONSE4, 5
MSA2805S
MSA285R2S
MSA2812S
MSA2815S
MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX
4.95 5.00 5.05 5.15 5.20 5.25 11.88 12.00 12.12 14.85 15.00 15.15
MSA2860S1
MIN TYP MAX
59.1 60.00 60.9
UNITS
VDC
0
—
1000
0
—
962
0
—
417
0
—
333
0
—
20
mA
Tc = –55°C TO +125°C
—
—
5
—
—
5
—
—
5
—
—
5
—
—
1.2
W
10 kHz - 2 MHz
VIN = 16 TO 40 VDC
Tc = –55°C TO +125°C
NO LOAD TO FULL
Tc = –55°C TO +125°C
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
—
110
335
—
50
200
—
50
170
—
—
300
mV p-p
—
10
502
—
10
50
—
10
50
—
10
50
—
—
300
mV
—
10
50
—
10
50
—
10
50
—
10
50
—
—
300
mV
16
0
—
—
—
—
—
66
—
—
28
—
27
250
3
25
30
71
1.5
12.5
40
50
40
—
5
100
150
—
2.0
25
16
0
—
—
—
—
—
66
—
—
28
—
28
250
3
25
30
71
1.5
1.5
40
50
40
—
5
100
150
—
2.0
25
16
0
—
—
—
—
—
70
—
—
28
—
29
235
3
25
30
76
1.2
1
40
50
42
—
5
100
150
—
1.9
10
16
0
—
—
—
—
—
71
—
—
28
—
31
235
3
25
30
76
1.2
1
40
50
44
—
5
100
150
—
1.8
10
16
0
—
—
—
—
—
70
—
—
28
—
—
72
3
—
—
75
—
—
40
50
30
—
5
90
—
—
—
—
VDC
V
—
—
100
100
250
250
—
—
100
100
250
250
—
—
150
200
375
500
—
—
200
200
500
500
—
—
—
—
—
—
—
50
150
—
50
150
—
80
200
—
50
125
—
—
—
—
50
150
—
50
150
—
100
250
—
50
125
—
—
—
16 TO 40 VIN
—
100
250
—
100
250
—
250
625
—
250
625
—
—
—
40 TO 16 VIN
DELAY
OVERSHOOT
—
200
500
—
200
500
—
250
625
—
250
625
—
—
—
—
—
10
0
25
50
—
—
10
0
25
50
—
—
3
0
10
120
—
—
3
0
10
150
—
—
—
—
—
—
VIN = 16 TO 40 VDC
POWER DISSIPATION
RECOVERY
50% - 100% - 50%
TRANSIENT
RECOVERY
TRANSIENT
16 TO 40 VIN
40 TO 16 VIN
mA
mA p-p
%
W
ms
mV pk
µs
mV pk
RECOVERY
START-UP
Notes
1. MSA2860S specifications are at 25°Tc only, contact your Interpoint
representative for more information on over temperature specs.
2. Line regulation for /ES and non /ES 2805S models at 16 to 17 VIN and 110
°C to 125°C (case) is 5% (max).
2
µs
ms
mV pk
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
VOUT is within 1% of VOUT at final value.
5. Transition time >10µs.
MSA SERIES
5 WATT
DC/DC CONVERTERS
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
DUAL OUTPUT MODELS
PARAMETER
OUTPUT VOLTAGE
MSA 2805D
CONDITIONS
MSA2812D
MSA2815D
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
+VOUT
4.95
5.00
5.05
11.88
12.00
12.12
14.85
15.00
15.15
–VOUT
4.9
5.0
5.1
11.76
12.00
12.24
14.70
15.00
15.30
—
±500
800
—
±208
333
—
±167
267
UNITS
VDC
OUTPUT CURRENT1
VIN = 16 to 40 VDC
Tc = –55°C to +125°C
OUTPUT POWER1
VIN = 16 to 40 VDC
Tc = –55°C to +125°C
—
—
5
—
—
5
—
—
5
W
10 kHz - 2 MHz
—
—
150
—
40
140
—
60
150
mV p-p
Tc = –55°C to +125°C
+VOUT
—
10
25
—
10
50
—
10
50
—
40
75
—
40
180
—
40
180
—
10
50
—
10
50
—
10
50
—
50
200
—
50
200
—
50
200
—
10
20
—
8
15
—
7
15
—
5
8
—
3.7
6
—
3
6
NO LOAD TO FULL
˜CONTINUOUS
16
28
40
16
28
40
16
28
40
VDC
TRANSIENT 50 msec
NO LOAD
—
—
—
30
50
35
—
—
—
33
50
58
—
—
—
38
50
60
V
FULL LOAD
INHIBITED
10 kHz TO 10 MHz
Tc = –55°C to +125°C
—
—
—
—
68
248
3
25
30
72
—
5
80
160
—
—
—
—
—
69
235
3
25
30
75
—
5
100
150
—
—
—
—
—
70
235
3
25
30
75
—
5
100
150
—
mA
—
—
1.3
—
1.8
50
—
—
1.3
1
1.7
10
—
—
1.3
1
1.6
10
W
ms
OUTPUT RIPPLE VOLT.
LINE REGULATION
Vin = 16 to 40 VDC
–VOUT
LOAD REGULATION
NO LOAD TO FULL
Tc = –55°C to +125°C
+VOUT
–VOUT
CROSS REGULATION2
+PO = 20 - 80 %, –PO = 80 - 20%
–PO = 20 - 80 %, +PO = 80 - 20%
+PO = 50 - 10 %, –PO = 50%
–PO = 50 - 10 %, +PO = 50%
INPUT VOLTAGE
Tc = –55°C to +125°
INPUT CURRENT
Tc = –55°C to +125°C
INPUT RIPPLE
CURRENT
EFFICIENCY
LOAD FAULT3, 4
STEP LOAD
RESPONSE4, 5
STEP LINE RESP.4, 5
START-UP
POWER DISSIPATION
SHORT CIRCUIT
RECOVERY
50% - 100% - 50% BALANCED
mA
mV
mV
%
mA p-p
%
TRANSIENT
—
—
±150
—
±300
±750
—
±300
±750
mV
RECOVERY
—
—
100
—
200
500
—
500
1250
µs
—
—
—
—
—
—
—
—
—
—
—
—
±750
±500
1200
1200
25
500
—
—
—
—
—
—
±50
±50
150
400
3
0
±125
±125
375
1000
10
120
—
—
—
—
—
—
±150
±100
250
800
3
0
±375
±250
625
2000
10
150
16 TO 40
TRANSIENT
40 TO 16
16 TO 40
RECOVERY
40 TO 16
DELAY
OVERSHOOT
VDC
VDC
VDC
VDC
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.
2. Shows regulation effect on the minus output during the defined cross loading
conditions. See Figures 15 and 16.
mV pk
µs
ms
mV pk
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
VOUT is within 1% of VOUT at final value.
5. Transition time >10µs.
3
DC/DC CONVERTERS
MSA SERIES
5 WATT
PIN OUT
Pin
1
2
3
4
5
6
7
8
Single Output
Positive Output
Output Common
No connection
No connection
Inhibit
Positive Input
Input Common
Case Ground
Dual Output
Positive Output
Output Common
Negative Output
No connection
Inhibit
Positive Input
Input Common
Case Ground
Squared corner and dot on top
of package indicate pin one.
1
2
3
4
5
BOTTOM VIEW
MSA
8
7
6
See page 7 for dimensions.
FIGURE 1: PIN OUT BOTTOM VIEW
SMD NUMBERS
MODEL NUMBERING KEY
MSA
28 12
D / 883
Base Model
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.)
4
STANDARD MICROCIRCUIT
DRAWING (SMD)
MSA SERIES
SIMILAR PART
5962-9309201HXC
IN PROCESS
5962-9309301HXC
5962-9309401HXC
5962-0052201HXC
5962-9308901HXC
5962-9309001HXC
MSA2805S/883
MSA285R2S/883
MSA2812S/883
MSA2815S/883
MSA2860S/883
MSA2812D/883
MSA2815D/883
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
DC/DC CONVERTERS
MSA SERIES
5 WATT
Typical Performance Curves: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
80
28V
50
40
60
EFFICIENCY (%)
EFFICIENCY (%)
EFFICIENCY (%)
70
70
40V
30
16V
16V
70
60
80
80
16V
28V
40V
50
1
2
3
4
5
30
6
OUTPUT POWER (Watts)
28V
40V
50
40
40
MSA2805S EFFICIENCY
60
30
1
2
3
4
5
6
1
2
3
4
5
6
OUTPUT POWER (Watts)
OUTPUT POWER (Watts)
MSA2812S EFFICIENCY
MSA2815S EFFICIENCY
FIGURE 2
FIGURE 4
FIGURE 3
80
10
60
40V
28V
50
40
20
40
50
60
70
80
90
1
2
3
4
5
6
100
0.1
1
10
100
VOUT
OUTPUT POWER (Watts)
FREQUENCY (kHz)
100µs/div
16V TO 40V
MSA2815D EFFICIENCY
MSA SERIES AUDIO REJECTION
MSA2805S STEP LINE RESPONSE
FIGURE 7
FIGURE 6
FIGURE 5
20V/div.
30
VIN
30
20mV/div.
ATTENUATION (dB)
EFFICIENCY (%)
20V/div.
16V
70
100% to 10%
VIN
10% to 100%
100µs/div
10% 100%
MSA2805S STEP LOAD RESPONSE
FIGURE 8
FIGURE 9
50% to 10%
VOUT
1 ms / div
100µs/div
50% 100%
MSA2805S STEP LOAD RESPONSE
MSA2805S TURN-ON INTO NO LOAD
FIGURE 10
–POUT=2.5W
–POUT=0.5W
VIN
90% to 10%
+VOUT
200mV/div.
100mV/div.
100mV/div.
20V/div.
50% to 100%
1V/div.
50mV/div.
50mV/div.
100% to 50%
–VOUT
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 +VO STEP LOAD RESPONSE
MSA2815D +VO STEP LOAD RESPONSE
FIGURE 11
FIGURE 12
FIGURE 13
5
DC/DC CONVERTERS
MSA SERIES
5 WATT
VIN
5V/div.
+VOUT
–VOUT
10
5
8
4
–VOUT VOLTAGE CHANGE (%)
–VOUT VOLTAGE CHANGE (%)
20V/div.
Typical Performance Curves: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
6
4
2812D
2
0
2815D
–2
–4
–6
–8
–10
500µs/div
90/10
70/30
50/50
30/70
10/90
MSA DUAL CROSS REGULATION
FIGURE 14
16
INPUT VOLTAGE (Volts)
INPUT VOLTAGE (Volts)
17
MSA2805S
15
MSA2812S
14
13
MSA2815D
16
15
14
13
MSA2812D
MSA2815S
12
1
2
3
4
6
1
2
3
4
5
6
OUTPUT POWER (Watts)
50 mV DROP
OUTPUT POWER (Watts)
50 mV DROP
LOW LINE DROPOUT VS. LOAD
LOW LINE DROPOUT VS. LOAD
FIGURE 17
6
5
12
COND A
1
0
FIGURE 18
2815D
–1
COND B
–2
–3
2812D
–4
10
20
30
40
50
OUTPUT LOAD (%)
COND. A: 50% LOAD +V; 10% to 50% –V
COND. B: 50% LOAD –V; 10% to 50% +V
MSA DUAL CROSS REGULATION
FIGURE 16
FIGURE 15
17
2
–5
OUTPUT LOAD (+VOUT % / –VOUT %)
90–10% LOAD on +V, 10-90% LOAD on –V
MSA2815D TURN-ON INTO NO LOAD
2812D
3
MSA SERIES
5 WATT
DC/DC CONVERTERS
Dot on top of case
indicates pin one
CASE C
BOTTOM VIEW
See Figure 20
for pin configurations.
1.075 max
(27.31)
Materials
Header Cold Rolled Steel/Nickel/Gold
Cover Cold Rolled Steel/Nickel
Pins
Copper/Nickel/Gold
compression glass seal
1.075 max
(27.31)
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
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
Seam Seal
Projection Weld
Squared corner and dot on
top of case indicate pin one.
0.932
(23.67)
1
2
3
4
5
0.025
(0.64)
dia.
0.932 (23.67)
6
0.732 (18.59)
0.532 (13.51)
7
0.332 (8.43)
0.000
0.000
0.205 ±0.010
(5.21 ±0.25)
0.270 max.
(6.86)
0.000
0.205 ±0.010
(5.21 ±0.25)
0.270 max.
(6.86)
0.132 (3.35)
8
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
DC/DC CONVERTERS
MSA SERIES
5 WATT
ENVIRONMENTAL SCREENING
TEST (125°C Products)
STANDARD
/ES
/883 (Class H)*
PRE-CAP INSPECTION
Method 2017, 2032
yes
yes
yes
TEMPERATURE CYCLE (10 times)
Method 1010, Cond. C, -65°C to 150°C
Method 1010, Cond. B, -55°C to 125°C
no
no
no
yes
yes
no
CONSTANT ACCELERATION
Method 2001, 3000 g
Method 2001, 500 g
no
no
no
yes
yes
no
BURN-IN
Method 1015, 160 hours at 125°C
96 hours at 125°C case (typical)
no
no
no
yes
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
yes
no
HERMETICITY TESTING
Fine Leak, Method 1014, Cond. A
Gross Leak, Method 1014, Cond. C
Gross Leak, Dip (1 x 10-3)
no
no
yes
yes
yes
no
yes
yes
no
FINAL VISUAL INSPECTION
Method 2009
yes
yes
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
Email:
[email protected]
Interpoint UK
Phone: +44-1252-815511
Email:
[email protected]
8
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.
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