MSR28512T/ES [CRANE]
DC/DC CONVERTERS 28 VOLT INPUT; DC / DC转换器, 28伏特的输入型号: | MSR28512T/ES |
厂家: | Crane Aerospace & Electronics. |
描述: | DC/DC CONVERTERS 28 VOLT INPUT |
文件: | 总6页 (文件大小:91K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
FEATURES
• –55°C to +85°C operation
MSR SERIES
4 WATT
DC/DC CONVERTERS
28 VOLT NPUT
• 16 to 32 VDC input
• Fully isolated
I
• Opto-coupler feedback
• Switching frequency
MODELS
Single and dual outputs
typical 80 kHz, variable freq.
Triple output - 200 kHz, fixed
• Topology – Flyback
VDC OUTPUT
SINGLE
5
DUAL
±12
±15
TRIPLE
+5 & ±12
+5 & ±15
• 40 V for 50 ms transient protection
• Inhibit function
• Indefinite short circuit protection
• Up to 70% efficiency
• External capacitors required
Size (max.): 1.075 x 1.075 x 0.370 inches (27.31 x 27.31 x 9.40 mm).
See Section B8, case C2, for dimensions.
Weight:
20 grams maximum.
Screening: Standard or ES.See Section C2 for screening options,
see Section A5 for ordering information.
DESCRIPTION
The MSR Series™ DC/DC converters provide the high efficiencies
associated with switching regulators, yet have full isolation between
input and output. Interpoint builds the MSR converters using thick-
film hybrid technology and seals them in metal packages for military,
aerospace, and other high-reliability applications. The solder sealed
packages of the standard models pass a dip gross leak hermeticity
test. Environmentally screened models pass a fine leak hermeticity
test. See Section C2 for a complete list of screening options.
INHIBIT FUNCTION
The open collector TTL compatible inhibit terminal is referenced to
input common. Inhibiting the converter by pulling the inhibit terminal
(pin 15) low results in an input current as low as 2 mA for the
MSR2805S. The inhibit terminal has an open circuit voltage of 12
to 28 V.
SHORT CIRCUIT PROTECTION
Each output has current limiting circuitry for indefinite short circuit
protection providing that the case temperature does not exceed the
specified limits. Under short circuit conditions the input current is
reduced to less than full load input current and the output short
circuit current remains higher than full load output current.
CONVERTER DESIGN
A footprint of just over one square inch makes the MSR Series
DC/DC converters one of Interpoint’s smallest converters. These
converters incorporate a flyback topology which requires a minimum
of components resulting in small package size. Single and dual
models self-oscillate at an operating frequency which is an approx-
imate inverse function of the load. At full load, the frequency is typi-
cally 80 kHz for single and dual output models. Triple output models
operate at a fixed frequency of approximately 200 kHz. A trans-
former in the forward power circuit and an opto-coupler in the feed-
back/control loop maintain input to output isolation.
MINIMAL HEAT SINKING
The MSR Series converters’ high efficiency minimizes heat sinking
requirements, but care should be taken to remove self-generated
heat to prevent exceeding the maximum case temperature. Heat
conducting material (PCB, copper sheet, heat sink, etc.) in contact
with the converter’s baseplate can help to increase heat dissipation.
The converter can be operated at full load at a case temperature of
85°C, with the output power derated linearly to zero at 115°C.
CONVERTER OPERATION
MSR Series DC/DC converters feature an input voltage range of 16
to 32 VDC and can withstand a transient of up to 40 V for up to 50
msec. They offer a choice of five different output voltage (VDC)
configurations: +5 , ±12 , ±15, +5 main with ±12 auxiliaries, and +5
main with ±15 auxiliaries. Dual output models deliver up to 4 watts
for either balanced or unbalanced loads, however, at least 25% of
the total load should be on the positive output. The single output
model supplies up to 3.5 watts of output power while the triple output
models supply up to 3.2 watts. The high efficiency remains almost
constant over the entire input voltage range and from approximately
25% of full load to full load. This makes the MSR Series converters
ideal for either battery or aircraft power applications.
WARNING: EXTERNAL CAPACITORS REQUIRED
External capacitors are required on the outputs. Operating the unit
without external capacitors will result in damage to the internal
circuitry. Minimum recommended capacitor values are given in
Tables 1 and 2. For optimum performance, low ESR (Equivalent
Series Resistance) solid tantalum capacitors are required. The
specifications on the following pages are based on the use of high-
quality solid tantalums. Operation with different types of capacitors
will seriously affect performance.
B4-27
MSR SERIES
DC/DC CONVERTERS
4 WATT
TYPICAL CHARACTERISTICS
INHIBIT
ABSOLUTE MAXIMUM RATINGS
Output Voltage Temperature Coefficient
• MSR2805S 100 ppm/°C typ, 200 max.
• MSR28XXD 50 ppm/°C typ
• MSR285XXT 100 ppm/°C typ
Input to Output Capacitance
• 60 pF typical
Input Voltage
• 16 to 32 VDC
Output Power
• 3.2 to 4 watts depending on model
Lead Soldering Temperature (10 sec per lead)
• 300°C
Inhibit TTL Open Collector
• Logic low (output disabled) ≤ 0.8 V
• Referenced to input common
• Logic high (output enabled) ≥ 12 V
Open collector
Isolation
• 100 megohm minimum at 500 V
Conversion Frequency
Storage Temperature Range (Case)
• –-65°C to +150°C
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range
• 16 to 32 VDC continuous
• Single and dual output models, 80 kHz at
full load typical, variable frequency
• Triple output models, 200 kHz typical
fixed frequency
Inhibit Pin Voltage (unit enabled)
• 12 to 28 V
• 40 V for 50 msec transient
Case Operating Temperature (Tc)
• –55°C to +85°C full power
• –55°C to +115°C absolute
Derating Output Power/Current
• Linearly from 100% at 85°C to 0% at 115°C
WARNING: EXTERNAL CAPACITORS REQUIRED
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
SINGLE AND DUAL OUTPUT MODELS
1
MSR2805S
MSR2812D
TYP MAX
±11.88 ±12 ±12.12
MSR2815D
PARAMETER
OUTPUT VOLTAGE
OUTPUT CURRENT
OUTPUT POWER
OUTPUT RIPPLE
LINE REGULATION
LOAD REGULATION
INPUT VOLTAGE
CONDITIONS
MIN
4.90
—
TYP
5.0
—
—
75
5
MAX
5.10
700
3.5
150
10
MIN
MIN
TYP MAX
UNITS
VDC
mA
±14.85
—
±15 ±15.15
16 TO 32 V
IN
—
—
—
—
—
16
—
—
—
—
67
—
—
75
10
12
28
—
10
—
—
70
±167
4.0
150
20
—
—
75
10
12
28
—
10
—
—
70
±133
4.0
150
20
Tc = –55°C TO +85°C
BW = DC TO 1 MHz
—
—
W
—
—
mV p-p
mV
16 TO 32 V
IN
—
—
NO LOAD TO FULL
Tc = –55°C TO +85°C
TRANSIENT 50 ms
NO LOAD
—
25
28
—
7
50
24
—
24
mV
16
—
32
32
16
—
32
VDC
V
40
40
40
INPUT CURRENT
—
10
15
—
15
FULL LOAD
—
—
—
70
192
2
213
15
—
213
15
mA
%
INHIBITED
—
—
EFFICIENCY
65
—
—
67
—
Notes
1. External capacitors required to prevent damage to internal circuitry (see
Table 1 for specifications).
2. Dual output models deliver up to 4 watts total for balanced or unbalanced
loads, however, the positive output should carry at least 25% of the total load.
SINGLE AND DUAL OUTPUT EXTERNAL CAPACITORS
OPERATION WITHOUT EXTERNAL CAPACITORS WILL RESULT IN DAMAGE TO THE INTERNAL CIRCUITRY.
TABLE 1: EXTERNAL CAPACITOR REQUIREMENTS
Required
Connection
Single Output Positive Output (12 & 13) to
Minimum
Capacitor Value
FEEDBACK
POSITIVE
OUTPUT
10
1
Model
EXTERNAL
CAPACITORS
POSITIVE
INPUT
1, 2
220 µF, 10 V
100 µF, 25 V
100 µF, 25 V
10 µF, 25 V
MSR2805S
Output Common (8 & 9)
Positive Output (10) to
Output Common (8)
External Capacitor (14) to
Output Common (8)
+
+
OUTPUT
COMMON
8
LOGIC
100µF
INHIBIT
15
2
Dual Outputs
MSR2812D
and
TIMING
CONTROL
SWITCH
+
10µF
100µF
NEGATIVE
OUTPUT
12
17, 18
3
VOLTAGE
REGULATOR
INPUT
COMMON
MSR2815D
Negative Output (12) to
Output Common (8)
14
Notes – Table 1
1. Capacitors should be high quality, low ESR components —
solid tantalum is recommended.
EXTERNAL
CAPACITOR
TERMINAL
FIGURE 1: DUAL OUTPUT EXTERNAL CAPACITOR CONNECTIONS
2. See Figure 1 for connection diagram
3. Place positive side of capacitor toward pin 8.
B4-28
MSR SERIES
4 WATT
DC/DC CONVERTERS
WARNING: EXTERNAL CAPACITORS REQUIRED
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
TRIPLE OUTPUT MODELS
PARAMETER
MSR28512T
MSR28515T
TYP MAX
5.0 5.1
CONDITIONS
MIN
4.9
TYP
MAX
5.1
MIN
UNITS
16 TO 32 V
IN
MAIN
AUX
5.0
4.9
OUTPUT VOLTAGE
VDC
BALANCED LOAD
±11.5 ±12.0 ±12.5
1
±14.5 ±15.0 ±15.5
1
MAIN
AUX
10.0
—
—
—
—
—
—
—
—
16
—
—
—
—
65
—
—
—
50
50
5
400
±50.0
3.2
100
100
10
10.0
—
—
—
—
—
—
—
—
16
—
—
—
—
65
—
—
—
50
50
5
400
±40.0
3.2
100
100
10
OUTPUT CURRENT
mA
2
OUTPUT POWER
Tc = –55°C TO +85°C
W
MAIN
3
mV p-p
OUTPUT RIPPLE
BW DC TO 1 MHz
± AUX
MAIN
± AUX
MAIN
± AUX
LINE REGULATION
16 TO 32 V
IN
mV
mV
3
6
3
7.5
30
15
15
28
—
10
—
—
70
30
15
15
28
—
10
—
—
70
LOAD REGULATION
INPUT VOLTAGE
NO LOAD TO FULL
30
30
Tc = –55°C TO +85°C
TRANSIENT 50 ms
NO LOAD
32
32
VDC
V
40
40
20
20
INPUT CURRENT
EFFICIENCY
FULL LOAD
176
5
176
5
mA
%
INHIBITED
—
—
Notes
1. External capacitors required (see Table 2 for specifications).
2. Minimum load required on main output for full power auxiliary operation.
TRIPLE OUTPUT EXTERNAL CAPACITOR
OPERATION WITHOUT EXTERNAL CAPACITORS WILL RESULT IN DAMAGE TO THE INTERNAL CIRCUITRY.
FEEDBACK
TABLE 2: EXTERNAL CAPACITOR REQUIREMENTS
+5 OUTPUT
9
POSITIVE
Required
Connection
Minimum
Capacitor Value
INPUT
1, 2
REF. &
COMP
220µF
EXTERNAL
CAPACITOR
1
2
OUTPUT
COMMON
6, 7
Model
MSR28512T
and
LOGIC
INHIBIT
15
INPUT
Positive 5 VDC Output (9) to
Output Common (6 or 7)
TIMING
CONTROL
SWITCH
8
220 µF, 10 V
DUAL
TRACKING
REGULATOR
POSITIVE
AUXILIARY
OUTPUT
COMMON
MSR28515T
17, 18
Notes – Table 2
1. See Figure 2 for connection diagram.
2. Capacitors should be high quality, low ESR components —
solid tantalum is recommended.
5
NEGATIVE
AUXILIARY
OUTPUT
FIGURE 2:
TRIPLE OUTPUT EXTERNAL CAPACITOR CONNECTIONS
B4-29
MSR SERIES
4 WATT
DC/DC CONVERTERS
WARNING: EXTERNAL CAPACITORS REQUIRED
OPERATION WITHOUT EXTERNAL CAPACITORS WILL RESULT IN DAMAGE TO THE INTERNAL CIRCUITRY.
PIN OUT
Pin
1, 2
3
Single Output
Positive Input
No connection
Case
Dual Output
Positive Input
No connection
Case
Triple Output
Positive Input
1
Dot on top of cover
indicates pin one.
No connection
Case
4
5
No connection
No connection
No connection
Output Common
Output Common
No connection
No connection
No connection
No Connection
No connection
Negative Aux. Output
Output Common Main
1
2
9
2
6
BOTTOM VIEW
MSR
2
7
Output Common Aux.
3
3
8
Output Common Positive Aux. Output
18 17
10
9
No connection
Positive Output
No connection
+5 VDC Output
No connection
No connection
10
11
12
13
14
15
16
See section B8, case C2, for dimensions.
3
Positive Output
Negative Output No connection
FIGURE 3: PIN OUT
3
Positive Output
No connection
Ext. Capacitor
Inhibit
No connection
No connection
Inhibit
No connection
Inhibit
No connection
Input Common
No connection
Input Common
No connection
Input Common
1
17, 18
Pin Out Notes
1. Make external connection to both pins on all models.
Pins 1 and 2 positive input
Pins 17 and 18 input common
2. Pins 6 and 7 on triple output models are connected internally.
3. On the HR41-2805:
Make external connections to both output common pins (8 and 9).
Make external connections to both positive output pins (12 and 13).
MODEL NUMBERING KEY
MSR
28 512 T / ES
Base Model
Input Voltage
Output Voltage
(Main and aux. Vout for triple models)
Number of Outputs
(S = single, D = dual, T = triple)
Screening
(Standard screening has no designator
in this position.)
24021-001-DTS Rev A
DQ# 1022
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. MSR Series is a trademark of Interpoint.
Copyright © 1992 - 1999 Interpoint. All rights reserved.
B4-30
CASE C
CASES
BOTTOM VIEW CASE C1
MSA Series: Screening – Standard, ES, or 883
Dot on top of case
indicates pin one
SMSA Series: Screening – Space Standard, H, or K
Projection Weld
Squared corner and dot on
top of case indicate pin one.
Seam Seal
CASE C
BOTTOM VIEW
See Figures 9 - 11
for pin configurations.
0.932
(23.67)
1.075 max
(27.31)
1
8
2
3
7
4
5
0.025
(0.64)
dia.
6
1.075 max
(27.31)
Materials
Header Case C1
0.132
(3.35)
0.000
Cold Rolled Steel/Nickel/Gold
Cases C2 and C3
Kovar/Nickel/Tin
FIGURE 9:
CASE C1
Cover Case C1
Cold Rolled Steel/Nickel
Cases C2 and C3
Kovar/Nickel/Tin
BOTTOM VIEW CASE C2
MSR Series: Screening – Standard or ES
HR40 Series: No screening options
Pins
Case C1
Copper/Nickel/Gold
Cases C2 and C3
Kovar/Nickel/Gold,
matched glass seal
Dot on top of case
indicates pin one
0.018 ±0.002 dia.
(0.46 ±0.05)
1
2
9
Case dimensions in inches (mm)
Tolerance
0.800 (20.32
±0.005 (0.13) for three decimal places
±0.01 (0.3) for two decimal places
unless otherwise specified
18 17
10
CAUTION
0.100 (2.54)
Pins equally
spaced
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.
Marker bead
on pin 18
FIGURE 10:
CASE C2
0.800 (20.32)
BOTTOM VIEW CASE C3
FIGURE 8: CASE C
MAXIMUM DIMENSIONS
MSF EMI Filter: Screening – Standard or ES
Seam Seal
Dot on top of case
indicates pin one
0.018 ±0.002 dia.
(0.46 ±0.05)
1
9
2
8
3
4
0.800 (20.32
7
6
5
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 dimen-
sions for accuracy.
FIGURE 11:
CASE C3
B8-8
QA SCREENING
85°C PRODUCTS
85°C PRODUCTS
TEST (85°C Products excluding HR products)
STANDARD
/ES
yes
yes
yes
yes
yes
PRE-CAP INSPECTION
Method 2017
yes
no
TEMPERATURE CYCLE (10 times)
Method 1010, Cond. B, -55°C to 125°C
CONSTANT ACCELERATION
Method 2001, 500 g
no
BURN-IN
96 hours at 70°C ambient (typical)
FINAL ELECTRICAL TEST MIL-PRF-38534, Group A
Subgroups 1 and 4: +25°C case
HERMETICITY TESTING
no
yes
Fine Leak, Method 1014, Cond. A
Gross Leak, Method 1014, Cond. C
no
no
yes
yes
no
-3
Gross Leak, Dip (1 x 10 )
yes
FINAL VISUAL INSPECTION
Method 2009
yes
yes
Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534.
Applies to the following products:
MFW Series
MTW Series
MHE/MLP Series
MHL Series
MRH Series
MTO Series
MSR Series
DCH Series
FM/FMA/FMB EMI Filters
MSF EMI Filter
C2-12
相关型号:
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