MCH/MGH Single and Dual DC-DC Converters

Crane Aerospace & Electronics Power Solutions
MCH/MGH Single and Dual DC-DC Converters
28 Volt input – 1.5 Watt
Features
Small footprint, 0.79 in2 (5.1 cm2) - MCH
Surface mount package - MGH
• Operating temperature -55°C to +125°C
• Input voltage 12 to 50 VDC
• Transient protection 80 V for up to 120 ms
-- 70 V for 15 V single and dual models
• Fully isolated, magnetic feedback
• Fixed frequency switching
models
• Inhibit function
VDC Output
• Short circuit protection
SINGLE
• Undervoltage lockout
• Up to 79% efficiency
DESCRIPTION
The Interpoint™ MCH Series™ and MGH Series™ of dc-dc
converters deliver 1.5 watts of output power while saving
significant board real estate. The wide input voltage range of 12
to 50 VDC accepts the varying voltages of military, aerospace, or
space bus power and tightly regulates output voltages to protect
downstream components. Transient protection of 80 volts for up
to 120 milliseconds exceeds the requirements of MIL-STD-704A
for the 5 and 12 volt single models and the 12 volt dual model.
The 15 volt single and dual converters will withstand transients of
up to 70 volts for up to 120 milliseconds.
The converters are offered with standard screening, “ES”
screening, or fully compliant to “883” MIL-PRF-38534 Class H
screening. See “Table 11: Element Evaluation” on page 12 and
“Table 12: Environmental Screening” on page 13. Standard
microcircuit drawings (SMD) are available. See “Table 5:
MCH SMD Numbers” on page 4 and “Table 6: MGH SMD
Numbers” on page 4.
Converter Design
MCH Series and MGH Series of dc-dc converters incorporate a
continuous flyback topology with a constant switching ­frequency
of approximately 370 kHz. Current-mode pulse width modulation
(PWM) provides output voltage regulation. Output error voltage
is magnetically fed back to the input side of the PWM to regulate
output voltage. Regulation is also affected by the load; refer to the Electrical Characteristics Table 9 on page 6 and
Table 10 on page 7.
DUAL
5
±5
12
±12
15
±15
Dual models regulate the negative output with magnetic coupling
to the positive output. Up to 80% of the total load may be on
one output providing that the other output carries a minimum of
20% of the total load. The dual models can be used at double
the output voltage by connecting the load between positive and
negative outputs, leaving the common unconnected. (ex: MCH2805D can be used as a 10 VDC output.)
Inhibit Function
MCH and MGH converters provide an inhibit terminal that can be
used to disable internal switching, resulting in no output voltage
and an input current as low as 2.3 mA. The converter is inhibited
when the inhibit pin is pulled below 0.8 V and enabled when its
inhibit pin is left floating. An external inhibit interface should be
capable of pulling the converter’s inhibit pin below 0.8 V while
sinking the maximum inhibit current and also allowing the inhibit
pin to float high to enable the converter. A voltage should not be
applied to the inhibit pin. The open circuit voltage present on the
inhibit pin is 7 to 12 V.
Protection Features
Undervoltage lockout prevents the converters from operating
below approximately 8 VDC input voltage to keep system
current levels smooth, especially during initialization or re-start
operations. All models include a soft-start function to prevent
large current draw and minimize overshoot. The converters also
provide short circuit protection by restricting the current.
MIL-STD-461
Use the Interpoint FMSA-461 (down-leaded) or FMGA-461
(surface mount, side-leaded) EMI filters to pass the CE03
requirements of MIL-STD-461C.
Crane Aerospace & Electronics
Power Solutions – Interpoint Products
10301 Willows Rd. NE, Redmond, WA 98052
+1.425.882.3100 • [email protected]
www.craneae.com/interpoint
Page 1 of 13
MCH_MGH Rev AB - 2013.05.31
Crane Aerospace & Electronics Power Solutions
MCH/MGH Single and Dual DC-DC Converters
28 Volt input – 1.5 Watt
Packaging
MCH - Down-leaded package
The MCH Series converters are packaged in hermetically sealed,
projection-welded metal cases which provide EMI/RFI shielding.
See “Figure 21: MCH Case Dimensions” on page 10.
MGH - Surface mount package
The surface mount MGH dc-dc converters can be mounted with
pick-and-place equipment or manually. It is recommended that
the case be attached with flexible epoxy adhesive or silicone
which is thermally conductive (>1 watt /meter/°K).
Internal components are soldered with SN96 (melting
temperature 221°C) to prevent damage during reflow. Maximum
reflow temperature for surface mounting the MGH converter is
220°C for a maximum of 30 seconds. SN60, 62, or 63 are the
recommended types of solder. Hand soldering should not exceed
300°C for 10 seconds per pin.
The hermetically sealed metal cases are available in two different
lead configurations. See “Figure 22: MGH Case Dimensions” on
page 11 and “Figure 23: MGH Gull-Wing Solder Pad Layout”
on page 11.
Positive
Input
+
+Vin
Inhibit
Shutdown
FB
PWM
Controller
+Vout
Input
Common
Case
Ground
Dual models only
Figure 1: MCH/MGH Block Diagram
www.interpoint.com
Page 2 of 13
MCH_MGH Rev AB - 2013.05.31
+
Positive
Output
+
Output
Common
Negative
Output
Crane Aerospace & Electronics Power Solutions
MCH/MGH Single and Dual DC-DC Converters
28 Volt input – 1.5 Watt
Pin
Pin Out MCH Models
Single Output
Dual Output
Pin
1
Positive Input
Positive Input
2
Input Common
Input Common
3
Positive Output
4
5
Pin Out MGH Models
Single Output
Dual Output
1
Positive Input
Positive Input
2
No Connection
No Connection
Positive Output
3
Input Common
Input Common
Output Common
Output Common
4, 5
Positive Output
Positive Output
Case Ground
Case Ground
6, 7
Case Ground
6
No Connection
Negative Output
8, 9
Output Common
Output Common
7
Inhibit
Inhibit
10, 11
Case Ground
Case Ground
12
No Connection
No Connection
13, 14
No Connection
Negative Output
15, 16, 17
No Connection
No Connection
18
Inhibit
Inhibit
Table 1: MCH Pin Out
Case Ground
To meet specified performance for the MGH, all pins must be
connected except “No connection” pins and Inhibit pin.
Table 2: MGH Pin Out
Squared corner and dot on
1
2
3
4
5
6
7
8
9
top of cover indicate pin one.
1 2
3
bottom view MCH
7
6
4
5
TOP VIEW
MGH
18
17
16
15
14
13
12
11
10
Differently colored glass bead around pin one or dimple in
header (bottom or side of case) indicates pin one.
Cover marking is oriented with pin one at the upper right corner.
See case A2 for dimensions.
Figure 2: MCH Pin Out
See case B for dimensions and “gull-wing” option.
Figure 3: MGH Pin Out
Inhibit
MCH Pins not in Use
“No Connection” pin
MGH Pins not in Use
Leave unconnected
Inhibit
Leave unconnected
“No Connection” pins
Table 3: MCH Pins not in Use
Leave unconnected
Connect to case ground for best
EMI performance. Also ok to
leave unconnected.
Table 4: MGH Pins not in Use
www.interpoint.com
Page 3 of 13
MCH_MGH Rev AB - 2013.05.31
Crane Aerospace & Electronics Power Solutions
MCH/MGH Single and Dual DC-DC Converters
28 Volt input – 1.5 Watt
SMD Numbers
Standard Microcircuit
Drawing (SMD)
SMD Numbers
MCH Similar Part
Standard Microcircuit
Drawing (SMD)
MGH Similar Part
5962-9569601hxc
MCH2805S/883
5962-9569601hzc
MGH2805SZ/883
5962-9569701HXC
MCH2812S/883
5962-9569701Hzc
MGH2812SZ/883
5962-9569801HXC
MCH2815S/883
5962-9569801Hzc
MGH2815SZ/883
5962-9570201HXC
mCH2805d/883
5962-9570201Hzc
MGH2805DZ/883
5962-9570301hxc
MCH2812D/883
5962-9570301hzc
MGH2812DZ/883
5962-9570401hxc
MCH2815D/883
5962-9570401hzc
MGH2815DZ/883
For exact specifications for an SMD product, refer
to the SMD drawing. SMDs can be downloaded
from: http://www.dscc.dla.mil/programs/smcr
For exact specifications for an SMD product, refer
to the SMD drawing. SMD numbers are shown for
the surface mount gull-wing case. For the straightlead case, replace the Z (HZC)in the SMD with a Y
(HYC). SMDs can be downloaded from: http://www.
dscc.dla.mil/programs/smcr
Table 5: MCH SMD Numbers
Table 6: MGH SMD Numbers
model numbering key
Base Model
Input Voltage
MCH
model numbering key
28 12 D / 883
Base Model
Input Voltage
Output Voltage
(R = decimal point, 3R3 = 3.3 Vout)
MGH
28 12 S
Z / ES
Output Voltage
Number of Outputs
(S = single, D = dual)
Number of Outputs
(S = single, D = dual)
Gull Wing Lead Option
(Straight leaded case has no designator
in this position.)
Screening
(Standard screening has no designator
in this position.)
Screening
(Standard screening has no designator
in this position.)
Figure 4: MCH Model Numbering Key
Figure 5: MGH Model Numbering Key
To
Category
model Number Options
determine the model number enter one option from each category in the form below.
Base Model and
Input Voltage
Output Voltage
Options
MCH
05, 12, 15
MGH
05, 12, 15
Fill in for
Model #
__________
M H
__________
Case Options 2
Screening 3
S
MCH – down-leaded: leave blank
(standard, leave blank)
D
MGH – straight leads: leave blank
ES
MGH – gull wings: Z
883
Number of
Outputs 1
/
Notes:
1. Number of Outputs: S is a single output and D is a dual output
2. Case Options: For the standard case MCH down-leaded case leave the case option blank. For the MGH straight-lead case, leave the case option blank. For the MGH,
surface mount gull-wing case, insert the letter “Z” in the case option position.
3. Screening: For standard screening leave the screening option blank. For other screening options, insert the desired screening level. For more information see
“Table 11: Element Evaluation” on page 12 and “Table 12: Environmental Screening” on page 13.
www.interpoint.com
Table 7: MCH/MGH SMD Model Number Options
Page 4 of 13
MCH_MGH Rev AB - 2013.05.31
Crane Aerospace & Electronics Power Solutions
MCH/MGH Single and Dual DC-DC Converters
28 Volt input – 1.5 Watt
Table 8: Operating Conditions, All Models : 25°C TC, 28 VDC VIN, 100% load, unless otherwise specified.
All Models
PARAMETER
CONDITIONS
LEAD SOLDERING TEMPERATURE
1
Surface Mount Solder Reflow 1, 2
10 seconds max.
MIN
—
SN 60, 62 or 63 Recommended
STORAGE TEMPERATURE 1
MAX
UNITS
—
300
°C
220°C for max. of 30 seconds
-65
CASE OPERATING
TYP
—
+150
°C
FULL POWER
ABSOLUTE 1
-55
—
+125
TEMPERATURE
-55
—
+135
DERATING OUTPUT POWER/CURRENT 1
LINEARLY
From 100% at 125°C to 0% at 135°C
ISOLATION, ANY PIN TO CASE
Except case pin
@ 500 VDC at 25°C
INPUT TO OUTPUT CAPACITANCE 1
UNDERVOLTAGE LOCKOUT
CURRENT LIMIT 1, 3
AUDIO REJECTION
1
% OF FULL LOAD
1
CONVERSION FREQUENCY
FREE RUN
-55° TO +125°C
°C
100
—
—
Megohms
—
100 - 170
—
pF
VIN
—
8
—
—
125
—
—
40
—
dB
270
370
470
kHz
%
INHIBIT ACTIVE LOW (OUTPUT DISABLED)
inhibit pin pulled low —
—
0.8
VDC
Do not apply a voltage to the inhibit pin. 4
INHIBIT PIN SOURCE CURRENT 1
—
—
1
mA
INHIBIT ACTIVE HIGH (OUTPUT ENABLED)
Do not apply a voltage to the inhibit pin. 4
INHIBIT PIN CONDITION
REFERENCED TO
OPEN PIN VOLTAGE 1
INPUT COMMON
7
OPEN COLLECTOR OR
UNCONNECTED
—
12
V
Notes:
1. Guaranteed by qualification test and/or analysis. Not an in-line test.
2. See “Figure 23: MGH Gull-Wing Solder Pad Layout” on page 11 for more information
3. Dual outputs: The over-current limit will trigger when the sum of the currents from both outputs reaches 125% (typical value) of the maximum
rated “total” current of both outputs.
4. An external inhibit interface should be used to pull the inhibit low or leave it floating. The inhibit pin can be left unconnected if not used.
www.interpoint.com
Page 5 of 13
MCH_MGH Rev AB - 2013.05.31
Crane Aerospace & Electronics Power Solutions
MCH/MGH Single and Dual DC-DC Converters
28 Volt input – 1.5 Watt
Table 9: Electrical Characteristics: -55°C to +125°C TC, 28 VDC Vin, 100% load, free run, unless otherwise specified.
MCH/MGH single output models
PARAMETER
CONDITIONS
OUTPUT VOLTAGE 2
OUTPUT CURRENT
Vin = 12 to 50 VDC
OUTPUT POWER
Vin = 12 to 50 VDC
OUTPUT RIPPLE
TC = 25°C
MCH2805S
MCH2812S
MCH2815S
MGH2805S
MGH2812S
MGH2815S
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
4.80
5.00
5.20
11.52
12.00
12.48
14.40
15.00
15.60
VDC
0
—
300
0
—
125
0
—
100
mA
0
—
1.5
0
—
1.5
0
—
1.5
W
—
45
150
—
50
200
—
35
150
TC = -55°C TO +125°C
—
65
300
—
70
300
—
50
250
—
40
120
—
70
250
—
80
350
mV
LOAD REGULATION 3
10% LOAD TO FULL
—
380
800
—
640
1400
—
760
1600
mV
INPUT VOLTAGE
CONTINUOUS
12
28
50
12
28
50
12
28
50
VDC
V
10 kHz - 2 MHz
LINE REGULATION
VIN = 12 to 50 VDC
1
mV p-p
NO LOAD TO FULL
TRANSIENT 120 msec.
—
—
80
—
—
80
—
—
70
INPUT CURRENT
NO LOAD
—
6.0
11
—
6.5
12
—
6.5
12
INHIBITED
—
2.4
3.5
—
2.4
3.5
—
2.4
3.5
10 kHz - 10 MHz
—
130
250
—
150
250
—
150
250
TC = 25°C
72
77
—
74
79
—
74
79
—
69
75
—
72
77
—
72
77
—
POWER DISSIPATION
RECOVERY 1
—
1.4
2.3
—
2.2
3.5
—
2.5
4.0
W
SHORT CIRCUIT
—
3.5
15
—
3.5
20
—
4.0
20
ms
STEP LOAD RESPONSE 7
TRANSIENT
—
±185
±500
—
±380
±800
—
±380
±800
mV pk
50% - 100% - 50%
RECOVERY
—
125
600
—
130
600
—
180
750
µs
INPUT RIPPLE CURRENT 4
EFFICIENCY
TC = -55°C TO +125°C
LOAD FAULT 5, 6
STEP LINE RESPONSE
1, 7
mA
mA p-p
%
TRANSIENT
—
180
±500
—
±400
±1000
—
±450
±850
mV pk
12 - 50 - 12 VDC
RECOVERY
—
0.75
4.0
—
0.6
3.0
—
0.5
2.5
ms
START-UP
DELAY
OVERSHOOT 1
—
10
40
—
10
40
—
10
40
ms
—
0
150
—
0
350
—
0
450
mV pk
—
—
200
—
—
200
—
—
200
µF
0 - 28 VIN, Full lOad
CAPACITIVE LOAD 1
TC = 25°C
NO EFFECT ON DC
PERFORMANCE
Notes:
1. Guaranteed by qualification test and/or analysis. Not an in-line test.
2. Specified at 50% total Pout.
3. Although no minimum load is required, at no load the output voltage may
increase up to 15%.
4.An external 2 µH inductor, added in series to the input, is necessary to maintain
specifications.
www.interpoint.com
5.Maximum duration of short circuit: 25°C – 90 seconds, 125°C – 30 seconds.
6.Load fault is a short circuit (<50 mohms). Recovery is into resistive full load.
7.Transition ≥ 10 µs. Recovery = time to settle to within 1% of Vout final value.
Page 6 of 13
MCH_MGH Rev AB - 2013.05.31
Crane Aerospace & Electronics Power Solutions
MCH/MGH Single and Dual DC-DC Converters
28 Volt input – 1.5 Watt
Table 10: Electrical Characteristics: -55°C to +125°C TC, 28 VDC Vin, 100% load, free run, unless otherwise specified.
MCH/MGH Dual output models
PARAMETER
OUTPUT VOLTAGE 2
OUTPUT CURRENT
3
Vin = 12 to 50 VDC
MCH2805D
MCH2812D
MCH2815D
MGH2805D
MGH2812D
MGH2815D
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
±VOUT
4.80
5.00
5.20
11.52
12.00
12.48
14.40
15.00
15.60
VDC
EACH OUTPUT
0
±150
240
0
±62.5
100
0
±50
80
TOTAL OUTPUT
—
—
300
—
—
125
—
—
100
OUTPUT POWER 3
EACH OUTPUT
0
±0.75
1.2
0
±0.75
1.2
0
±0.75
1.2
Vin = 12 to 50 VDC
TOTAL OUTPUT
—
—
1.5
—
—
1.5
—
—
1.5
OUTPUT RIPPLE
10 kHz - 2 MHz ± VOUT
LINE REGULATION ±VOUT
4
LOAD REGULATION ±VOUT
Cross REgulation
5
INPUT VOLTAGE
NO LOAD TO FULL
TC = 25°C
—
35
150
—
35
150
—
30
150
—
50
250
—
40
250
—
35
250
VIN = 12 to 50 V
—
20
100
—
110
400
—
180
650
mV
10% LOAD TO FULL
—
350
700
—
570
1200
—
630
1400
mV
-VOUT
—
—
400
—
—
500
—
—
500
mV
12
28
50
12
28
50
12
28
50
VDC
—
—
80
—
—
80
—
—
70
V
1
TRANSIENT 120 msec.
NO LOAD
—
6.0
12
—
8.0
14
—
8.0
14
INHIBITED
—
2.4
3.5
—
2.4
3.5
—
2.4
3.5
INPUT RIPPLE CURRENT 6
10 kHz - 10 MHz
—
130
250
—
150
250
—
150
250
EFFICIENCY
TC = 25°C
73
77
—
73
77
—
72
76
—
70
75
—
70
75
—
69
74
—
—
1.6
2.5
—
2.7
4.2
—
3.0
4.5
TC = -55°C TO +125°C
LOAD FAULT 7, 8
W
TC = -55°C TO +125°C
CONTINUOUS
INPUT CURRENT
mA
POWER DISSIPATION
1
mV p-p
mA
mA p-p
%
W
SHORT CIRCUIT
RECOVERY
—
3.8
20
—
3.2
20
—
4.0
20
ms
STEP LOAD RESPONSE 9
TRANSIENT
—
±140
±400
—
±260
±700
—
±270
±700
mV pk
50% - 100% - 50%
RECOVERY
—
100
500
—
165
800
—
50
300
µs
STEP LINE RESPONSE 1, 9
TRANSIENT
—
±130
±300
—
±250
±600
—
±230
±600
mV pk
12 - 50 - 12 VDC
RECOVERY
—
0.6
3.0
—
0.9
4.0
—
0.7
4.0
ms
START-UP
DELAY
—
10
45
—
10
45
—
10
45
ms
0 to 28 VIN, full Load
OVERSHOOT 1
—
0
150
—
0
350
—
0
900
mV pk
NO EFFECT ON DC
PERFORMANCE
—
—
100
—
—
100
—
—
100
µF
CAPACITIVE LOAD
TC = 25°C
1
Notes:
1. Guaranteed by qualification test and/or analysis. Not an in-line test.
2. Specified at 50% total POUT with balanced loads.
3. Up to 80% of the total output current/power is available from either output
providing the opposite output carries a minimum of 20% total load.
4. Although no minimum load is required, at no load the output voltage may
increase up to 15%.
5.Cross regulation is specified as the effect on –Vout for the following percentages
of total output power: +Po = 20% and –Po = 80% to +Po=80% and –Po=20%
www.interpoint.com
6.An external 2 µH inductor, added in series to the input, is necessary to maintain
specifications.
7.Maximum duration of short circuit: 25°C – 90 seconds, 125°C – 30 seconds.
8.Load fault is a short circuit (<50 mohms). Recovery is into resistive full load.
9.Transition ≥ 10 µs. Recovery = time to settle to within 1% of Vout final value.
Page 7 of 13
MCH_MGH Rev AB - 2013.05.31
Crane Aerospace & Electronics Power Solutions
MCH/MGH Single and Dual DC-DC Converters
28 Volt input – 1.5 Watt
Typical Performance Curves: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
MCH and MGH Single and Dual output models
90
90
80
12 VOLT
70
28 VOLT
60
50 VOLT
50
60
50 VOLT
0.75
30
1
1.25 1.5 1.75
ALL 5 VOLT MODELS
EFFICIENCY vs LOAD
28 VOLT
50 VOLT
60
50
40
0.25 0.5
0
OUTPUT POWER
12 VOLT
70
50
40
30
28 VOLT
EFFICIENCY
EFFICIENCY
70
80
12 VOLT
EFFICIENCY
80
90
40
0.25 0.5
0
OUTPUT POWER
30
1
1.25 1.5 1.75
0.75
12 & 15 VOLT SINGLE MODELS
1
1.25 1.5 1.75
0.75
12 & 15 VOLT DUAL MODELS
EFFICIENCY vs LOAD
EFFICIENCY vs LOAD
Figure 6
0.25 0.5
0
OUTPUT POWER
Figure 7
Figure 8
0
20 V / div.
VIN
80
100
10
60
FREQUENCY (kHz)
MCH/MGH2815S - Representative of all models
1
FULL LOAD TO HALF LOAD
100 mV / div.
12 VDC
40
60
50 VDC
100 mV / div.
ATTENUATION (dB)
20
VOUT
HALF LOAD TO FULL LOAD
200µs / div.
500µs / div.
MCH/MGH2805S
MCH/MGH2805S
LOAD TRANSIENT RESPONSE
LINE TRANSIENT RESPONSE
AUDIO REJECTION
VOUT
6
0
2
4
8
10 12 14 16 18
TIME (ms)
MCH/MGH2805S
Representative of all 5 volt models
VIN
Figure 11
+VOUT FULL LOAD TO HALF LOAD
–VOUT HALF LOAD TO FULL LOAD
50 VDC
12 VDC
200 mV / div.
20 V / div.
VIN
Figure 10
200 mV / div.
2V/div.
20V/div.
Figure 9
+VOUT
–VOUT FULL LOAD TO HALF LOAD
+VOUT HALF LOAD TO FULL LOAD
–VOUT
200µs / div.
MCH/MGH2815D
LINE TRANSIENT RESPONSE
500µs / div.
MCH/MGH2815D
LOAD TRANSIENT RESPONSE
TURN-ON INTO FULL LOAD
Figure 12
www.interpoint.com
Figure 13
Page 8 of 13
MCH_MGH Rev AB - 2013.05.31
Figure 14
Crane Aerospace & Electronics Power Solutions
MCH/MGH Single and Dual DC-DC Converters
28 Volt input – 1.5 Watt
Typical Performance Curves: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
MCH and MGH Single and Dual output models (cont.)
4
4
(A)
0
5
10 15 20
TIME (ms)
(A) 0 V for +VOUT
30 35 40 45
MCH/MGH2815D
(B) 0 V for –VOUT
2
±VOUT VOLTAGE CHANGE (%)
+VOUT
–VOUT
5V/div.
±VOUT VOLTAGE CHANGE (%)
20V/div.
(B)
–5 V
5V
VIN
12 V
15 V
0
-2
25
2
0
-2
–15 V
–12 V
+15 V
+12 V
+5 V
-4
90/10 70/30 50/50 30/70 10/90
OUTPUT LOAD (%)
DUAL ISOLATED
90% TO 10% LOAD ON +V
10% TO 90% LOAD ON –V
-4
10
20
40
50
30
OUTPUT LOAD (%)
DUAL ISOLATED
50% LOAD +V; 50% TO 10% LOAD –V
AND
50% LOAD –V; 50% TO 10% LOAD +V
Also representative of MCH/MGH2812S & D and MCH/MGH2815S
TURN-ON INTO FULL LOAD
CROSS REGULATION
CROSS REGULATION
Figure 15
1.0
0.8
100
15 V
SINGLE
& DUAL
EMISSION LEVEL (dB µA)
1.2
90
TRIP POINT 125%
80
Vout NOMINAL %
MAXIMUM POWER (W)
1.4
Figure 17
120
1.8
1.6
Figure 16
12 V
SINGLE
& DUAL
60
SAFE OPERATING AREA
40
5V
DUAL
20
5V
SINGLE
0
9
10
INPUT VOLTAGE
11
12
ALL MODELS
0
20
40
60
80
100
% OF FULL LOAD
120 140
160
OUTPUT VOLTAGE vs. OUTPUT LOAD
www.interpoint.com
NARROWBAND
CE
03
50
LI
M
IT
30
10
.015
0.1
1
10
FREQUENCY (MHz)
Representative of all MCH/MGH models
FILTERED WITH FMSA
LOW LINE DROPOUT
Figure 18
70
Figure 19
Page 9 of 13
MCH_MGH Rev AB - 2013.05.31
Figure 20
50
Crane Aerospace & Electronics Power Solutions
MCH/MGH Single and Dual DC-DC Converter Cases
28 Volt input – 1.5 Watt
BOTTOM VIEW CASE A2
Projection Weld
Squared corner and dot on
top of case indicate pin one.
4
6
0.435�(11.05)
0.535 (13.59)
0.000
0.27 ±0.02
(6.9 ±0.5)
0.000
0.135 (3.43)
0.235 (5.97)
7
0.097 (2.46)
0.000
0.270 max (6.98)
3
5
0.835 (21.21)
1 2
0.018 ± 0.002 dia.
(0.46 ± 0.05)
Weight 12 grams typical
0.980 max. (24.89)
0.805 max. (20.45)
0.697 (17.70)
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
Solder pins individually with heat application not exceeding
300°C for 10 seconds per pin.
Materials
Header
Kovar/Nickel/Gold
Cover
Kovar/Nickel
Pins
Kovar/Nickel/Gold matched glass seal
Gold plating of 50 - 225 microinches
included in pin diameter
Seal hole: 0.056 ±0.002 (1.42 ±0.05)
Case A2, Rev G, 2013.04.15
Please refer to the numerical dimensions for accuracy.
Figure 21: MCH Case Dimensions
Down-Leaded Case
www.interpoint.com
Page 10 of 13
MCH_MGH Rev AB - 2013.05.31
Crane Aerospace & Electronics Power Solutions
MCH/MGH Single and Dual DC-DC Converter Cases
28 Volt input – 1.5 Watt
CASE B1 GULL-WING SOLDER PADS
TOP VIEW CASE B
1
2
3
4
5
6
7
8
9
0.830 (21.08)
0.015
(0.38)
0.100 (2.54) 16X
0.085 (2.16) 4X
The triangle (ESD) marking on the cover indicates pin one. Cover marking is oriented
with pin one at the upper right corner. The straight lead configuration does not
require a “case designator” in the model number. ex. MGH2805S
0.010
(0.25)
1.870 ref. (47.50)
0.08 (2.0)
0.250 max.
(6.35)
Straight Leads
0.50
(12.7)
Seam seal
1.140 ref. (28.96)
0.135 ref. (3.43)
1 0.010
(0.25)
The gull wing option
(configuration) requires
“Z” as a “case
designator”
in the model number.
ex. MGH2805Z
Gull Wing Leads
Option
1
Gull wing leads are solder dipped.
Lead dimensions are prior to solder dip.
0.010 (0.25)
Bottom of case to
bottom of lead
0.070
(1.78)
0.030 (0.76) 18X
1.010 max
(25.65)
0.000
0.000
0.070 (1.78)
18
17
16
15
(This view shows 14
straight leads.)
13
12
11
10
∇
0.900 (22.86)
0.800 (20.32)
0.700 (17.78)
0.600 (15.24)
0.500 (12.70)
0.400 (10.16)
0.300 ( 7.62)
0.200 ( 5.08)
0.100 ( 2.54)
0.090 (2.29)
0.880 max
(22.35)
0.055
(1.40)
(Center to center)
0.08
(2.0)
Weight 12 grams maximum
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. Please refer to the numerical
dimensions for accuracy.
CAUTION
Maximum reflow temperature is 220°C for a maximum of 30 seconds.
SN60, SN62, or SN63 are the recommended types of solder. See MGH
gull-wing solder pad layout. Hand soldering should not exceed 300°C for
10 seconds per pin.
Materials
Header Kovar/Nickel/Gold
Cover
Kovar/Nickel
Pins
Kovar/Nickel/Gold matched glass seal
Gold plating of 50 - 150 microinches is included in pin diameter
Seal hole: 0.040 ±0.002 (1.02 ±0.05)
Dimensions in inches (mm)
Tolerance ±0.005 (0.13) for three decimal places ±0.01 (0.3) for
two decimal places, unless otherwise specified.
Please refer to the numerical dimensions for accuracy.
CAUTION:
Internal components are soldered with SN96 (melting
temperature 221°C) to prevent damage during reflow. Maximum
reflow temperature for surface mounting the MGH converter is
220°C for a maximum of 30 seconds. SN60, 62, or 63 are the
recommended types of solder.
Hand soldering should not exceed 300°C for 10 seconds per pin.
SOLDER MASK NOTES
1. Pad dimensions are for the solder mask. Leads common to
each other can be connected to each other as desired.
2. Ground (case) pins should be connected to the center pad for
improved grounding.
3. Connect "no connection" pins to case ground to reduce EMI.
4. Center pad should not have a solder mask.
5. Adhesive attach is intended to be a surface for soldering the
hybrid to the circuit board.
6. Pre-tin base of converter prior to soldering.
7. If less rotation of case is desired, reduce the width of the large
case pad by 0.020 inches (0.51 mm). Pad length can be
extended 0.010 inches (0.25 mm) towards the case body and an
as-desired dimension away from the case body.
8. Do not exceed 220°C as measured on the body of the
converter (top or bottom).
9. Attach the body of the case to the board with a thermally
conductive adhesive or SN60, 62, or 63 solder. The adhesive
can be electrically conductive as well. It can be applied as an
underfill post solder or dispensed and cured prior or during
solder.
10. In the presence of vibration, to ensure reliable mechanical
attachment, the body of the case should be attached with
adhesive or solder as noted above (note 7). The leads alone do
not provide sufficient mechanical attachment.
Case B1 MGH Solder Pads, Rev F, 2013.05.31
Case B, Rev D, 2013.04.15
Figure 22: MGH Case Dimensions
www.interpoint.com
Figure 23: MGH Gull-Wing Solder Pad Layout
Surface Mount Case and Lead Options
Page 11 of 13
MCH_MGH Rev AB - 2013.05.31
CraneAerospace&ElectronicsPowerSolutions
Crane Aerospace & Electronics Power Solutions
MCH/MGH
Single
and Dual
Converters
Quality
assurance
andDC-DC
Certification
28 Volt input – 1.5 Watt
aPPlICatION NOte
StanDarD anD /eS (nOn-QMl) anD /883 (ClaSS H, QMl)
Mil-prf-38534 eleMent eValuatiOn
COMpOnent-leVel teSt perfOrMeD
nOn-QMl 1
QMl
StanDarD anD /eS
ClaSS H
/883
M/S 2
M/S 2
p3
n
n
n
Visual
n
n
InternalVisual
n
FinalElectrical
n
n
WireBondEvaluation
n
n
ElementElectrical
Notes:
1.Standardand/ESnon-QMLproductsmaynotmeetalloftherequirementsofMIL-PRF-38534.
2.M/S=Activecomponents(MicrocircuitandSemiconductorDie)
3.P=Passivecomponents,ClassHelementevaluation.NotapplicabletoStandardand/ES
elementevaluation.
tabLe 5: eLeMent evaLuation–high reLiabiLity stanDarD, /es anD /883 (CLass h)
Table 11: Element Evaluation
www.interpoint.com
www.craneae.com/interpoint
Page
12 of 13
Page9of13
APP-009RevAA-2013.04.09
MCH_MGH Rev AB - 2013.05.31
CraneAerospace&ElectronicsPowerSolutions
Crane Aerospace & Electronics Power Solutions
Quality assurance and Certification
MCH/MGH Single and Dual DC-DC Converters
aPPlICatION NOte
28 Volt input – 1.5 Watt
Tableisforreferenceonly.SeeindividualSeries'datasheetsforspecificscreening.
StanDarD anD /eS (nOn-QMl) anD /883 (ClaSS H, QMl)
Mil-prf-38534 enVirOnMental SCreening
nOn-QMl 1
teSt perfOrMeD
Pre-cap Inspection, Method 2017, 2032
QMl
StanDarD
/eS
ClaSS H
/883
n
n
n
temperature Cycle (10 times)
Method1010,Cond.C,-65°Cto+150°C,ambient
n
Method1010,Cond.B,-55°Cto+125°C,ambient
n
Constant acceleration
Method2001,3000g
n
Method2001,500g
n
burn-in Method 1015, +125°C case, typical 2
96hours
n
160hours
n
Final electrical test, MIl-PrF-38534, Group a,
Subgroups1through6,-55°C,+25°C,+125°Ccase
Subgroups1and4,+25°Ccase
n
n
n
n
GrossLeak,Method1014,Cond.C
n
n
FineLeak,Method1014,Cond.A
n
n
n
n
Hermeticity test
GrossLeak,Dip
n
Final visual inspection, Method 2009
n
TestmethodsarereferencedtoMIL-STD-883asdeterminedbyMIL-PRF-38534.
Notes:
1.Standardand/ES,non-QMLproducts,maynotmeetalloftherequirementsofMIL-PRF-38534.
2.Burn-intemperaturedesignedtobringthecasetemperatureto+125°Cminimum.Burn-inisapoweredtest.
Table 12: Environmental Screening
tabLe 6: environMentaL sCreening–high reLiabiLity stanDarD, /es anD /883 (CLass h)
www.craneae.com/interpoint
Page10of13
APP-009RevAA-2013.04.09
MCH/MGH Single and Dual. MCH_MGH Rev AB - 2013.05.31. This
revision supersedes all previous releases. All technical information is believed
to be accurate, but no responsibility is assumed for errors or omissions. Crane Electronics, Inc. reserves the right to make changes in products
or specifications without notice. Interpoint, MCH Series and MGH Series are trademarks of Crane Electronics, Inc. Copyright © 1999-2013 Crane
Electronics, Inc. All rights reserved. www.craneae.com/interpoint
Page 13 of 13