Crane MHF+2828S Mhf single, dual and triple dc/dc converter Datasheet

Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 15 WATT
FEATURES
•
•
•
•
•
•
•
•
•
•
•
–55° to +125°C operation
16 to 40 VDC input (16 to 48 VDC triple)
Fully isolated
Optocoupler feedback
Fixed frequency 550 kHz typical
- 450 kHz triple models
Topology
- Single and dual: Single Ended Forward
- Triple: Current Mode Flyback
Transient protection
- Single and dual: 50 V/50 ms
- Triple: 80 V/120 ms
Inhibit and sync functions
Indefinite short circuit protection
Undervoltage lockout
Up to 84% efficiency, 28 W/in3
- Up to 76% efficiency triple models
MODELS
VDC OUTPUT
SINGLE
DUAL
TRIPLE
3.3
±5
+5 & ±12
5
±12
+5 & ±15
5.2
±15
12
15
28
MHF+ SERIES™ SINGLE & DUAL
DC/DC CONVERTERS
The MHF+ Single and Dual Series™ of high frequency DC/DC
converters offers a wide input voltage range of 16 to 40 volts and up
to 15 watts of output power. The units are capable of withstanding
short term transients up to 50 volts. The package is a hermetically
sealed, welded metal case. Flanged and non-flanged models are
available.
The MHF+ Series offers a new standard of performance for small
size and high power density. At just 0.33 inch high and a total footprint of 1.7 in2, this low profile package offers a total power density
of up to 28 watts per cubic inch.
LOW NOISE, HIGH AUDIO REJECTION
CONVERTER DESIGN
The MHF+ converters are switching regulators that use a quasisquare wave, single-ended forward converter design with a constant
switching frequency of 550 kHz. Isolation between input and output
circuits is provided with a transformer in the forward path and a
temperature compensated optical link in the feedback control loop.
For the MHF+ dual output models, good cross regulation is maintained by tightly coupled output magnetics. Up to 90% of the total
output power (80% on 2805D) is available from either output,
providing the opposite output is simultaneously carrying 10% of the
total output power (20% on 2805D models). Predictable current limit
is accomplished by directly monitoring the output load current and
providing a constant current output above the overload point.
Crane Aerospace & Electronics
Electronics Group (Interpoint Brand)
PO Box 97005 • Redmond WA 98073-9705
425.882.3100 • [email protected]
www.craneae.com
HIGHER POWER DENSITY
The MHF+ converters’ feed-forward compensation system provides
excellent dynamic response and noise rejection. Audio rejection is
typically 50 dB. Typical output voltage response for a 50% to 100%
step load transient is as low as 1.3% with a 150 msec recovery time.
Input ripple current is typically 35 mA p-p with output ripple voltage
typically 30 mV p-p .
INHIBIT FUNCTION
MHF+ converters provide an inhibit terminal that can be used to
disable internal switching, resulting in no output and very low quiescent input current. The converter is inhibited when a TTL compatible
low (≤0.8 – output disabled) 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 8.5 to 12 V. In the inhibit mode, a maximum of 4 mA must be sunk
from the inhibit pin.
Page 1 of 20
Rev K - 20060613
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 15 WATT
SYNCHRONIZATION
SOFT START FEATURE
A synchronization feature is included with the MHF+ Series that
allows the user to match the switching frequency of the converter to
the frequency of the system clock. An external synchronization
feature is included that allows the user to adjust the nominally 550
kHz operating frequency to any frequency within the range of 500
kHz to 600 kHz. This is initiated by applying a TTL compatible input
of the desired frequency to pin 5.
The soft-start feature provides a controlled 20 milliseconds turn-on
to minimize inrush current and reduce overshoot at initial start-up or
when inhibit is released.
SHORT CIRCUIT PROTECTION
MHF+ Series converters provide short circuit protection by
restricting the output current to approximately 115% of the full load
output current. The output current is sensed in the secondary stage
to provide highly predictable and accurate current limiting, and to
eliminate foldback characteristics.
UNDERVOLTAGE LOCKOUT
Undervoltage lockout prevents the units from operating below
approximately 14 VDC input voltage to keep system current levels
smooth, especially during initialization or re-start operations.
MHF+ SERIES™ TRIPLE DC/DC CONVERTERS
MHF+ Series™ Triple DC/DC converters provide a wide input
voltage range of 16 to 48 VDC delivering 15 watts of total output
power with output voltages of +5 and ±12 or +5 and ±15 VDC. The
main output, +5 VDC, will supply up to 7.5 watts and the auxiliaries
will supply up to 7.5 watts of combined power. Full power operation
at -55° C to +125° C plus the ability to withstand transients of up to
80 V for up to 120 milliseconds make these converters an ideal
choice for your high reliability systems.
SYNCHRONIZATION
To synchronize the converter’s switching frequency to a system
clock apply the clock signal to the sync terminal (pin 7). When
multiple converters are powered from a single power source, asynchronous (free run) operation will result in lower peak noise for
common spectral peaks, but synchronous operation will eliminate
any possibility of interference frequencies in the low audio band.
Source impedance of the signal should be less than 100 ohms and
the transition time should be less than 100 nanoseconds. The
capacitively coupled sync input will synchronize on a differential
signal of as low as 4 volts to as high as 5 V. If the sync function is
not used, the terminal should be left open.
SHORT CIRCUIT PROTECTION
Internal current limiting circuitry protects all three outputs against
short circuits. When output power exceeds approximately 130% of
maximum output power, the output currents are limited. In addition,
separate current limiting circuitry protects each output individually
resulting in normal operation of either the main or the auxiliaries,
whichever is not in a shorted condition.
PACKAGING
MHF+ Triple converters are packaged in hermetically sealed metal
cases. MHF+ Triple converters can be purchased in a flanged or
non-flanged case. The flanged option provides increased heat dissipation and also provides greater stability when mechanically
secured.
CONVERTER DESIGN
MHF+ Triple Series of DC/DC converters incorporate dual-phase,
phase-shifted technology with a continuous flyback topology. This
design eliminates a minimum load requirement on the main output
and eliminates cross regulation effects between the main output
voltage and the auxiliary output voltages. The phase-shifted design
offers a further benefit in reduced input and output ripple.
INHIBIT FUNCTION
An open collector, TTL compatible, inhibit terminal (pin 1) provides
shut-down and start-up control. Applying a logic level low (<0.8 V),
referenced to input common, will disable the output of the converter.
When inhibited input current is reduced to 5 mA or less and there is
no generation of switching noise. The inhibit terminal typically sinks
3 mA when the converter is inhibited.
Leaving the terminal open or pulling it high will enable the converter.
Use an open collector interface for logic high voltages of up to 11
volts. (Refer to Figure 2 for a connection diagram.) An open collector
interface is not required if the logic high is in excess of the open
circuit voltage of the inhibit terminal, 11 volts, but less than 40 volts.
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Page 2 of 20
Rev K - 20060613
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 15 WATT
SIMPLIFIED SCHEMATIC DIAGRAMS
5 µH
Positive
Input
Positive
Output
2 µF
PWM
Controller
Inhibit
ID
FET
Driver
Limit
Ref.
IC
Input
Common
Output
Common
FIGURE 2: MHF+ SINGLE OUTPUT BLOCK DIAGRAM
0°
POSITIVE
INPUT
+5 OUTPUT
FEEDBACK ISOLATOR
PWM CM
CONTROLLER
OUTPUT
COMMON
INPUT
COMMON
FEEDBACK ISOLATOR
+ AUX.
OUTPUT
SYNC
PWM CM
CONTROLLER
180°
–AUX.
OUTPUT
FIGURE 1: MHF+ TRIPLE OUTPUT BLOCK DIAGRAM
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Page 3 of 20
Rev K - 20060613
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 15 WATT
CONNECTION DIAGRAMS
MHF+ Triple
POSITIVE INPUT
9
10 k
INHIBIT
1N4148
1
2N3501
200 pF
10 K
3.9 K
8
INPUT
COMMON
FIGURE 5: INHIBIT INTERFACE
9
0.01
28V
F
7
+5 Output 2
Positive Input
+5
Load
+ Aux. Output 4
Sync In
+ Aux.
Load
5.1k
Output Common 3
1
Inhibit
8
Input Common
– Aux. Output 5
– Aux.
Load
If the sync terminal ([pin 7) is not used, it must be left floating.
The ac coupling shown will prevent sync signal failure.
FIGURE 6: AC COUPLING OF SYNC SIGNAL
1
Positive Input
2
9
Positive Input
Output Common 4
8
Input Common
Positive Output
FMH-461
EMI FILTER
28V
5
Input Common
3
MHF+ TRIPLE
Case*
6
Chassis Ground
*The case ground connection should be as low an impedance as possible to minimize EMI.
Direct contact of baseplate to chassis ground provides the lowest impedance.
FIGURE 7: EMI FILTER CONNECTION
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Page 4 of 20
Rev K - 20060613
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 15 WATT
OPERATING CONDITIONS AND CHARACTERISTICS
SYNC AND INHIBIT
Input Voltage Range
Single and dual models:
• 16 to 40 VDC continuous
• 50 V for up to 50 msec transient
Triple models:
• 16 to 48 VDC continuous
• 80 V for up to 120 msec
Output Power
• 12 to 15 watts depending on model
Power Dissipation (Pd)
• 6 watts single and dual, 12 watts triple
Lead Soldering Temperature (10 sec per pin)
• 300°C
Storage Temperature Range (Case)
• –65°C to +150°C
Case Operating Temperature (Tc)
• –55°C to +125°C full power
• –55°C to +135°C absolute
Derating Output Power/Current
• Linearly from 100% at 125°C to 0% at 135°C
Output Voltage Temperature Coefficient
• 100 ppm/°C typical
• 150 ppm/°C maximum
Input to Output Capacitance
• 60 pF typical
Current Limit
• 115% of full load typical (130% typical triple)
Isolation
• 100 megohm minimum at 500 V
Audio Rejection
• 50 dB typical
Conversion Frequency (55°C to +125°C Tc)
• Free run 550 kHz typical (375 minimum, 500 kHz maximum triple)
• External sync range 480 kHz min, 620 kHz max(400 to 600 kHz triple)
Inhibit Pin Voltage (unit enabled)
• 8.5 to 12 V, 10 V typical
Undervoltage Lockout
• 14 V input typical
Sync In (500 to 600 kHz single and dual, 400 to 600 kHz
triple)
• Duty cycle 40% to 60%
• Logic low 0.8 V max
• Logic high 4 V min, 5 V max
• If not used, connect to input common (on triple models,
leave unconnected)
• Referenced to input common
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Sync Out - Referenced to input common
Inhibit: TTL Open Collector
• Logic low (output disabled)
Logic low voltage ≤0.8 V max
Inhibit pin current 4.0 mA max
(3.0 typ, 5.0 max triple models)
• Referenced to input common
Logic high (output enabled)
Open collector or unconnected (single and dual)
Unconnected or 11 to 40 V (triple)
MECHANICAL AND ENVIRONMENTAL
Size (maximum)
Non flanged 1.460 x 1.130 x 0.330 (37.08 x 28.70 x 8.38 mm)
Flanged 2.005 x 1.130 x 0.330 (50.93 x 28.70 x 8.38 mm)
See cases E1, E2, G1 and G2 for dimensions.
Weight (maximum)
Single and dual models: 30 grams typical
Triple models: 32 grams typical
Screening
Standard, ES or 883 (Class H). See “883, Class H, QML
Products – Element Evaluation” and “883, Class H, QML
Products – Environmental Screening” for more information.
Page 5 of 20
Rev K - 20060613
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 15 WATT
PIN OUT
Pin
Single Output
(Except MHF+2828S)
Inhibit
No connection
Output Common
Positive Output
Sync
Case Ground
Input Common
Positive Input
—
1
2
3
4
5
6
7
8
9
MHF+2828S
Dual Output
Triple Output
Inhibit
Positive Output
(See note 1, below)
Output Common
Sync
Case Ground
Input Common
Positive Input
—
Inhibit
Positive Output
Output Common
Negative Output
Sync
Case Ground
Input Common
Positive Input
—
Inhibit
Main (+5 V) Output
Output Common
Pos. Aux. Output
Neg. Aux. Output
Case Ground
Sync In
Input Common
Positive Input
1. Pin 3 of MHF+2828S will provide 14 Vout referenced to output common (pin 4).
PINS NOT IN USE
Inhibit single, dual and triple models, pin 1
MHF+2828S, pin 3
Sync single and dual models, pin 5
Sync In triple models, pin 7
Dot on top of cover
indicates pin one.
1
2
3
4
Leave unconnected
Leave unconnected
Connect to input common
Leave unconnected
Squared corner and dot on top
of package indicate pin one.
1
5
BOTTOM VIEW
MHF+ SINGLE AND DUAL
NON-FLANGED OR FLANGED
8
7
2
3
4
5
BOTTOM VIEW
MHF+ Triple
9
6
8
7
6
Dotted line outlines flanged package option.
Dotted line outlines flanged package option.
See cases E1 and E2 for dimensions.
See cases E2 and G2 for dimensions.
FIGURE 4: MHF+ TRIPLE PIN OUT
FIGURE 3: MHF+ SINGLE AND DUAL PIN OUT
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Page 6 of 20
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Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 15 WATT
SMD NUMBERS
MODEL NUMBERING KEY
MHF+ 28 12 D
STANDARD MICROCIRCUIT
DRAWING (SMD)
F / 883
Base Model
Input Voltage
5962-0251001HXC
5962-9213901HXC
5962-0325301HXC
5962-9166401HXC
5962-9160101HXC
5962-9689801HXC
5962-9555901HXC
5962-9214401HXC
5962-9161401HXC
5962-9560101HXC
5962-9560201HXC
Output Voltage
(R = decimal point, 3R3 = 3.3 Vout;
Main and aux. Vout for triple models)
Number of Outputs
(S = single, D = dual, T = Triple)
Case Option
(Non-flanged case has no designator in
this position)
Screening
(Standard screening has no designator
in this position.)
MHF+
SIMILAR PART
MHF+283R3S/883
MHF+2805S/883
MHF+285R2S/883
MHF+2812S/883
MHF+2815S/883
MHF+2828S/883
MHF+2805D/883
MHF+2812D/883
MHF+2815D/883
MHF+28512T/883
MHF+28515T/883
Flanged SMDs have the suffix HZC instead of HXC.
For exact specifications for an SMD product, refer to the SMD
drawing. SMDs can be downloaded from
http://www.dscc.dla.mil/programs/smcr
Model Selection
MHF+28
Base model
Vout value
number of outputs
case option
screening
Choose one from each of the following rows
Vout value
singles: 3R3,5,5R2,12,15,28
duals: 5,12,15
triples*: 512 or 515
“R” = decimal point, 3R3 = 3.3VDC
Number of outputs
S (single), D (dual) or T (triple)
Case option
non-flanged, leave blank
F - flanged
Screening
standard screening, leave blank
/ES (ES screening), /883 (Class H, QML)
* for triple models “5” indicates the main voltage, “12” or“15” indicate the ± auxiliary voltages.
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Page 7 of 20
Rev K - 20060613
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 15 WATT
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.
SINGLE OUTPUT MODELS
MHF+283R3S
PARAMETER
OUTPUT VOLTAGE
OUTPUT CURRENT
CONDITION
VIN = 16 to 40 VDC
OUTPUT POWER
MIN
3.27
0
TYP MAX
3.30 3.33
—
2.4
MHF+2805S
MIN
4.95
0
TYP MAX
5.00 5.05
—
2.4
MHF+285R2S
MIN
5.16
0
TYP MAX
5.20 5.24
—
2.4
UNITS
VDC
A
VIN = 16 to 40 VDC
0
—
8
0
—
12
0
—
12.48
OUTPUT RIPPLE
VOLTAGE
LINE REGULATION
LOAD REGULATION
10 kHz - 2 MHz
Tc = –55°C to +125°C
Vin = 16 to 40 VDC
NO LOAD TO FULL
—
—
—
—
30
50
5
20
80
800
100
50
—
—
—
—
30
60
5
20
80
100
50
50
—
—
—
—
30
60
5
20
50
100
35
35
INPUT VOLTAGE
NO LOAD TO FULL
CONTINUOUS
TRANSIENT 50 ms
16
—
28
—
40
50
16
—
28
—
40
50
16
—
28
—
40
50
NO LOAD
—
25
40
—
25
40
—
25
42
INHIBITED
10 kHz - 10 MHz
Tc = –55°C to +125°C
—
—
—
70
5
45
—
75
12
80
120
—
—
—
—
75
5
35
—
77
12
80
100
—
—
—
—
75
5
35
—
77
12
80
120
—
mApp
INPUT CURRENT
INPUT RIPPLE
CURRENT
EFFICIENCY
LOAD FAULT1
STEP LOAD RESP.
STEP LINE RESP.
START-UP
CAPACITIVE LOAD
mV p-p
mV
mV
VDC
V
mA
%
SHORT CIRCUIT
POWER DISSIPATION
RECOVERY2
50% – 100% – 50%
TRANSIENT
RECOVERY2
—
—
5
7.5
8
30
—
—
3.5
7.5
6
30
—
—
3.5
7.5
6
30
W
ms
–400
—
150
150
400
300
–400
—
150
150
400
300
–400
—
150
150
400
300
mV pk
μs
16 – 40 – 16 VDC
TRANSIENT3
RECOVERY2
–800
—
550
0.8
800
1.2
–800
—
550
0.8
800
1.2
–800
—
550
0.8
800
1.2
mV pk
ms
DELAY
—
10
25
—
10
25
—
10
25
ms
OVERSHOOT4
—
200
300
—
100
600
—
100
600
mV pk
300
μF
300
Notes
1. Indefinite short circuit protection not guaranteed above 125°C
(case)
2. Recovery time is measured from application of the transient
to the point at which Vout is within regulation.
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W
Page 8 of 20
Rev K - 20060613
300
3. Input step transition time >10 μs.
4. Input step transition time <100 μs.
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 15 WATT
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.
SINGLE OUTPUT MODELS
PARAMETER
OUTPUT VOLTAGE
OUTPUT CURRENT
CONDITION
VIN = 16 to 40 VDC
OUTPUT POWER
MHF+2812S
MHF+2815S
MHF+2828S
MIN TYP MAX
11.88 12.00 12.12
0
— 1.25
MIN TYP MAX
14.85 15.00 15.15
0
— 1.00
MIN TYP MAX
27.72 28.00 28.28
0
— 0.54
VIN = 16 to 40 VDC
0
—
15
0
—
15
0
—
15
OUTPUT RIPPLE
VOLTAGE
LINE REGULATION
10 kHz - 2 MHz
Tc = –55°C to +125°C
Vin = 16 to 40 VDC
—
—
—
30
50
5
80
120
50
—
—
—
30
50
5
80
120
50
—
—
—
60
100
50
120
180
150
LOAD REGULATION
INPUT VOLTAGE
NO LOAD TO FULL
NO LOAD TO FULL
CONTINUOUS
TRANSIENT 50 ms
—
16
—
20
28
—
50
40
50
—
16
—
20
28
—
50
40
50
—
16
—
50
28
—
150
40
50
NO LOAD
FULL LOAD
INHIBITED
10 kHz - 10 MHz
Tc = –55°C to +125°C
—
—
—
—
—
78
25
680
5
35
—
79
50
752
12
80
120
—
—
—
—
—
—
78
25
670
5
35
—
80
62
752
12
80
120
—
—
—
—
—
—
82
25
640
5
35
—
84
60
760
12
80
120
—
INPUT CURRENT
INPUT RIPPLE
CURRENT
EFFICIENCY
LOAD FAULT1
STEP LOAD RESP.
STEP LINE RESP.
START-UP
W
mV p-p
mV
mV
VDC
V
mA
mA pp
%
SHORT CIRCUIT
POWER DISSIPATION
RECOVERY2
50% – 100% – 50%
TRANSIENT
RECOVERY2
—
—
3.5
7.5
6
30
—
—
3.5
7.5
6
30
—
—
3.5
7.5
6
30
W
ms
–500
—
150
150
500
300
–600
—
200
150
600
300
–800
—
600
200
800
400
mV pk
μs
16 – 40 – 40 VDC
TRANSIENT3
RECOVERY2
–800
—
550
0.8
800
1.2
–800
—
550
0.8
800
1.2
–1200 1100 1200
—
0.8
1.2
mV pk
ms
DELAY
0
10
25
0
10
25
OVERSHOOT4
0
200 1200
0
200 1500
Notes
1. Indefinite short circuit protection not guaranteed above 125°C
(case)
2. Recovery time is measured from application of the transient to point
at which Vout is within regulation.
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UNITS
VDC
A
Page 9 of 20
Rev K - 20060613
0
10
25
ms
0
200
280
mV pk
3. Input step transition time >10 μs.
4. Input step transition time <100 μs.
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 15 WATT
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.
DUAL OUTPUT MODELS
PARAMETER
MHF+2805D
CONDITIONS
OUTPUT VOLTAGE
MHF+2812D
MHF+2815D
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
4.92
5.00
5.08
11.82
12.00
1218
14.78
15.00
15.23
UNITS
VDC
OUTPUT CURRENT1
VIN = 16 to 40 VDC
—
±1.2
1.92
—
±0.625
1.125
—
±0.500
0.900
A
OUTPUT POWER1
VIN = 16 to 40 VDC
—
—
12
—
—
15
—
—
15
W
OUTPUT RIPPLE
VOLTAGE ±VOUT
10 kHz - 2 MHz
Tc = –55°C to +125°C
—
—
30
60
80
120
—
—
30
60
80
120
—
—
30
50
80
120
mV p-p
LINE REGULATION
BALANCED +VOUT
Vin = 16 to 40 VDC
LOAD REGULATION
—
5
50
—
5
50
—
5
50
–VOUT
—
—
80
—
—
100
—
—
100
BALANCED +VOUT
—
20
50
—
20
50
—
20
50
—
—
100
—
—
100
—
—
100
LOAD
LOAD
CROSS REGULATION2
INPUT VOLTAGE
NO LOAD TO FULL
INPUT CURRENT
INPUT RIPPLE
CURRENT
EFFICIENCY
LOAD FAULT
STEP LOAD RESP.5
BALANCED LOADS
STEP LINE RESP.
± VOUT
START-UP
–VOUT
mV
NEGATIVE VOUT
—
6
7.5
—
3
6
—
3
6
%
CONTINUOUS
TRANSIENT 50 msec
NO LOAD
FULL LOAD
INHIBITED
10 kHz - 10 MHz
Tc = –55°C to +125°C
16
—
—
—
—
—
—
77
28
—
20
540
6
20
40
79
40
50
40
600
12
50
80
—
16
—
—
—
—
—
—
76
28
—
25
645
5
35
50
83
40
50
50
754
12
60
100
—
16
—
—
—
—
—
—
76
28
—
25
638
5
35
50
84
40
50
50
754
12
60
100
—
VDC
V
—
—
3
7.5
6
30
—
—
3
7.5
6
50
—
—
3
7.5
6
50
–600
200
600
–600
300
600
–600
300
600
–600
150
600
–600
100
600
–600
100
600
SHORT CIRCUIT3
POWER DISSIPATION
RECOVERY4
50% – 100% – 50%
+VOUT
TRANSIENT
–VOUT
mA
mA p-p
%
W
ms
mV pk
RECOVERY4
16 – 40 – 40 VDC
TRANSIENT6
—
150
500
—
200
400
—
200
500
μs
–800
600
800
–750
550
750
–750
550
750
mV pk
RECOVERY4
DELAY
OVERSHOOT7
—
—
0
0.8
12
100
1.2
20
250
—
—
0
0.8
12
200
1.2
25
750
—
—
0
0.8
12
200
1.2
25
750
ms
ms
mV pk
Notes
1. Up to 13.5 watts, 90% (9.6W, 80% for 2805D) of the total output power is
available from either output providing the opposite output is simultaneously
carrying 10% (20% for 2805D) of the total output power. Each
output must carry a minimum of 10% (20% for 2805D) of the total output
power in order to maintain regulation on the negative output.
2. Effect on –Vout for the following conditions:
+Po = 50% to 10% and –Po = 50%
+Po = 50% and –Po = 50% to 10%
www.craneae.com
mV
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 regulation.
5. Response of either output with the opposite output held at half of the total
output power.
6. Input step transition time >10 μs.
7. Input step transition time <100 μs.
Page 10 of 20
Rev K - 20060613
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 15 WATT
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.
TRIPLE OUTPUT MODELS
PARAMETER
OUTPUT VOLTAGE
OUTPUT CURRENT2
OUTPUT POWER3
MHF+28512T
MHF+28515T
CONDITION
MIN
TYP
MAX
MIN
TYP
MAX
MAIN
4.95
5.0
5.05
4.95
5.0
5.05
+ AUXILIARY
11.64
12.0
12.36
14.55
15.0
15.45
– AUXILIARY
11.64
12.0
12.36
14.55
15.0
15.45
MAIN
0
—
1.5
0
—
1.5
+ AUXILIARY
—
—
0.416
—
—
0.333
– AUXILIARY
—
—
0.416
—
—
0.333
TOTAL
—
—
2.125
—
—
2.0
MAIN
—
—
7.5
—
—
7.5
+ AUXILIARY
—
—
5
—
—
5
– AUXILIARY
—
—
5
—
—
5
—
—
15
—
—
15
OUTPUT RIPPLE
10 kHz to 2 MHz
TOTAL
MAIN
—
20
60
—
20
60
VOLTAGE
10 kHz to 2 MHz
± AUXILIARY
—
30
90
—
30
112
LINE REGULATION4
MAIN
—
25
75
—
25
75
VIN = MIN. TO MAX.
±AUXILIARY
—
120
240
—
150
300
LOAD REGULATION4, 5
CROSS REGULATION6
INPUT VOLTAGE
INPUT CURRENT
INPUT RIPPLE CURRENT
MAIN
—
25
75
—
25
75
± AUXILIARY
—
120
240
—
150
300
STEP LOAD
RESPONSE4, 8, 9
START-UP4
A
W
mV p-p
mV
mV
– AUXILIARY
—
—
600
—
—
600
mV
16
28
48
16
28
48
VDC
V
TRANSIENT 120 ms1
—
—
80
—
—
80
NO LOAD -55 - +25°C
—
20
35
—
20
35
NO LOAD +125°C
—
30
45
—
30
45
INHIBITED4
—
3
5
—
3
5
—
20
50
—
20
50
mA p-p
74
76
—
74
76
—
%
10 kHz to 10 MHz
mA
POWER DISSIPATION
MAIN4
—
—
12
—
—
12
±AUXILIARY
TRANSIENT
MAIN
± AUXILIARY
RECOVERY MAIN
RECOVERY ±AUX.
DELAY EACH OUTPUT
—
—
12
—
—
12
—
—
—
—
—
—
—
5
2
10
850
950
8
3
25
—
—
—
—
—
—
—
5
2
10
850
950
8
3
25
Notes
1. Guaranteed, not tested
2. The sum of the 12 volt auxiliary output currents may not exceed 625 mA.
The sum of the 15 volt auxiliary output currents may not exceed 500 mA.
3. The sum of the auxiliary output power may not exceed 7.5 watts.
4. Case temperature –55°C to +125°C.
5. Load regulation for the +5 is specified at 0.0 to 1.5 A with the aux. both held
at 3.76 W (313 mA for the ±12, 250 mA for the ±15). Load regulation for the
aux. is specified as both aux. from 0.0 to 3.76 W (313 mA for ±12, 250 mA
for ±15) at the same time with the +5 held at 1.5 A.
www.craneae.com
VDC
CONTINUOUS
EFFICIENCY
LOAD FAULT7
UNITS
W
mV pk
ms
ms
6. Cross regulation only occurs between the two auxiliaries and is measured on
–aux. +5 is held constant at 1.0 A. Cross regulation is specified for two
conditions:
Negative aux.= 3.76 W; positive aux.= 0.37 W to 3.76 W.
Negative aux. = 0.37 W to 3.76 W; positive aux. = 3.76 W.
7. Load fault = <0.05 Ω.
8. Transition time is 2 – 10 μs.
9. Time to settle to within 1% of Vout final value.
Page 11 of 20
Rev K - 20060613
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 15 WATT
Typical Performance Curves: 25°C Tc , 28 VDC Vin, 100% load, free run, unless otherwise specified.
90
90
80
70
40V
28V
60
50
70
40V
60
50
2
4
6
8
10
40
12
2
4
MHF+2805S EFFICIENCY
6
8
10
12
40
14 15
6
16V
80
80
EFFICIENCY (%)
40V
28V
70
40V
60
28V
40
4
6
8
10
12
70
40V
60
28V
50
50
50
14 15
12
90
16V
70
10
FIGURE 10
90
80
8
OUTPUT POWER (Watts)
MHF+2815S EFFICIENCY
16V
2
4
MHF+2812S EFFICIENCY
FIGURE 9
90
60
2
OUTPUT POWER (Watts)
FIGURE 8
EFFICIENCY (%)
40V
28V
60
50
OUTPUT POWER (Watts)
40
70
EFFICIENCY (%)
40
16V
80
28V
EFFICIENCY (%)
EFFICIENCY (%)
EFFICIENCY (%)
80
90
16V
16V
40
2
4
6
8
10
12
14 15
2
4
6
8
10
12
14
OUTPUT POWER (Watts)
OUTPUT POWER (Watts)
OUTPUT POWER (Watts)
MHF+2805D EFFICIENCY
MHF+2812D EFFICIENCY
MHF+2815D EFFICIENCY
FIGURE 13
FIGURE 12
FIGURE 11
0
–30
–40
–50
VOUT
100% to 50%
100mV/div.
500mV/div.
–20
–60
50% to 100%
–70
20V/div.
ATTENUATION (dB)
–10
–80
–90
–100
0.1
1
10
FREQUENCY (kHz)
MHF+ SERIES AUDIO REJECTION
FIGURE 14
www.craneae.com
100
VIN
1ms/div
16V TO 40V
MHF+2805S STEP LINE RESPONSE
FIGURE 14
Page 12 of 20
Rev K - 20060613
50μs/div
50%
100%
MHF+2805S STEP LOAD RESPONSE
FIGURE 15
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 15 WATT
20V/div.
Typical Performance Curves: 25°C Tc , 28 VDC Vin, 100% load, free run, unless otherwise specified.
200mV/div.
VIN
100mV/div.
100% to 10%
+VOUT
1V/div.
200μs/div
10% 100%
MHF+2805S STEP LOAD RESPONSE
VIN
2 ms/div
1 ms/div
16V TO 40V
MHF+2805S TURN-ON INTO FULL LOAD
MHF+2815D STEP LINE RESPONSE
FIGURE 18
FIGURE 17
FIGURE 16
100% to 50%
POUT= 12W
VOUT
20V/div.
10% to 100%
PO= 7.5 W
PO= 7.5 W
–VOUT
100mV/div.
100mV/div.
5V/div.
100% to 20%
+VOUT
20V/div.
20% to 100%
50% to 100%
50μs/div
50% 100%
MHF+2815D +VOUT STEP LOAD RESPONSE
50μs/div
20% 100%
MHF+2815D +VOUT STEP LOAD RESPONSE
FIGURE 19
VIN
2 ms/div
MHF+2815D TURN-ON INTO FULL LOAD
FIGURE 21
FIGURE 20
10
5
2812D
2815D
0
–5
–10
2805D
0
20
40
60
80
100
POSITIVE OUTPUT LOAD (% OF TOTAL LOAD)
–VOUT WITH SHIFT IN LOAD BALANCE
CROSS REGULATION
2805D
8
16
6
MHF+2805S&D
2812D
4
COND A
2
0
2815D
–2
COND B
–4
2812D
–6
–8
–10
INPUT VOLTAGE (Volts)
–VOUT VOLTAGE CHANGE (%)
–V OUT VOLTAGE CHANGE (%)
10
15
14
MHF+2812S&D
MHF+2815S&D
13
2805D
10
20
30
40
50
OUTPUT LOAD (%)
COND. A: 50% LOAD +V; 50% to 10% –V
COND. B: 50% LOAD –V; 50% to 10% +V
12
10
11
12
13
www.craneae.com
FIGURE 23
Page 13 of 20
Rev K - 20060613
15
LOW LINE DROPOUT VS. LOAD
MHF+2805D/MHF+2812D/MHF+2815D
CROSS REGULATION
FIGURE 22
14
OUTPUT POWER (Watts)
50 mV DROP
FIGURE 24
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 15 WATT
Typical Performance Curves: 25°C Tc , 28 VDC Vin, 100% load, free run, unless otherwise specified.
28 V
70
48 V
65
60
55
16 V
75
EFFICIENCY
EFFICIENCY
75
200 mV / div.
80
16 V
28 V
70
48 V
65
60
2
4
6
10
8
12
14
55
16
2
4
6
5 VDC
500 mV / div.
80
8
10
12
14
OUTPUT POWER (W)
OUTPUT POWER (W)
MHF+28512T EFFICIENCY
MHF+28515T EFFICIENCY
16
+15 VDC
–15 VDC
5 ms / div.
INPUT V: 16 TO 40 VDC, ±15 = 250 mA EACH, +5 = 1.5 A
MHF+ 28515T STEP LINE RESPONSE
MHF+28512T has a similar response
VIN
10 V / div.
VIN
INPUT
GND
+5 VDC
+5
GND
5 V / div.
+5 VDC
VIN
+12 VDC
2 V / div.
2 V / div.
INPUT
GND
+5
GND
–12 VDC
5 ms / div.
5 ms / div.
5 ms / div.
MHF+28512T TURN ON INTO FULL LOAD
MAIN
MHF+28512T TURN ON INTO FULL LOAD
MAIN
MHF+28512T TURN ON INTO FULL LOAD
AUXILIARIES
MHF+28515T has a similar response
MHF+28515T has a similar response
MHF+28515T has a similar response
FIGURE 29
FIGURE 28
11.5
11
INPUT VOLTAGE
FIGURE 27
FIGURE 26
10 V / div.
10 V / div.
FIGURE 25
MHF+28515T
10.5
10
MHF+28512T
9.5
9
8.5
2
4
6
8
10
12
14
16
MAXIMUM OUTPUT POWER (W)
LOW LINE DROPOUT
FIGURE 31
www.craneae.com
Page 14 of 20
Rev K - 20060613
FIGURE 30
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converter Cases
28 VOLT INPUT – 15 WATT
BOTTOM VIEW CASE E1
Seam Seal
Projection Weld
Squared corner and dot on top
of case indicate pin one.
1.130 max. (28.70)
0.960 (24.38)
1
2
3
4
5
0.030 dia.
(0.76)
0.030 dia.
(0.76)
8
7
6
0.160 (4.06)
1.460 max. (37.08)
Seal hole: 0.080 ±0.002 (2.03 ±0.05)
1.105 (28.07)
0.905 (22.99)
0.705 (17.91)
0.505 (12.83)
0.205 (5.21)
0.000
0.25 (6.35)
0.000
0.330 max.
(8.38)
0.25 (6.35)
0.000
0.330 max
(8.38)
0.000
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.
Materials
Header
Cold Rolled Steel/Nickel/Gold
Cover
Kovar/Nickel
Pins
#52 alloy/Gold compression glass seal
Case E1, Rev C, 20060111
Please refer to the numerical dimensions for accuracy. All 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.
Copyright © 1999-2006 Interpoint Corp. All rights reserved.
FIGURE 32: CASE E1— SINGLE AND DUAL MODELS
www.craneae.com
Page 15 of 20
Rev K - 20060613
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converter Cases
28 VOLT INPUT – 15 WATT
BOTTOM VIEW CASE E2
Projection Weld
Seam Seal
Squared corner and dot on top
of case indicate pin one.
1.130 max. (28.70)
3
4
5
8
7
6
1.105 (28.07)
2
0.905 (22.99)
1
0.705 (17.91)
0.960 (24.38)
0.030 dia.
(0.76)
9
0.160 (4.06)
Seal Hole: 0.080 ±0.002 (2.03 ±0.05)
1.460 max. (37.08)
0.505 (12.83)
0.205 (5.21)
0.000
0.25 (6.35)
0.000
0.330 max
(8.38)
0.25 (6.35)
0.000
0.330 max
(8.38)
0.000
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
Materials
Header
Cold Rolled Steel/Nickel/Gold
Cover
Kovar/Nickel
Pins
#52 alloy/Gold compression glass seal
Case E2, Rev C, 20060111
Please refer to the numerical dimensions for accuracy. All 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.
Copyright © 1999-2006 Interpoint Corp. All rights reserved.
FIGURE 33: CASE E2 — TRIPLE MODELS
www.craneae.com
Page 16 of 20
Rev K - 20060613
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converter Cases
28 VOLT INPUT – 15 WATT
BOTTOM VIEW CASE G1
Flanged cases: Designator "F" required in Case Option position of model number
Projection Weld
Squared corner and dot on top
of case indicate pin one.
0.960
(24.38)
1
4
5
0.128 dia
(3.25)
Seal hole: 0.080 ±0.002 (2.03 ±0.05)
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.
Case G1, Rev B, September 23, 2005
Please refer to the numerical dimensions for accuracy. All 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.
Copyright © 1999-2005 Interpoint Corp. All rights reserved.
FIGURE 34: CASE G1 — SINGLE AND DUAL MODELS
www.craneae.com
Page 17 of 20
Rev K - 20060613
1.590 (40.39)
1.105 (28.07)
6
0.905 (22.99)
0.000
7
0.705 (17.91)
8
0.140 (3.56)
0.25 (6.35)
0.000
0.330 max.
(8.38)
0.25 (6.35)
0.000
3
0.560
(14.22)
0.160
(4.06)
0.000
0.330 max.
(8.38)
2
0.505 (12.83)
0.030 dia.
(0.76)
0.030 dia.
(0.76)
0.205 (5.21)
Seam Seal
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converter Cases
28 VOLT INPUT – 15 WATT
BOTTOM VIEW CASE G2
Flanged cases: Designator "F" required in Case Option position of model number
Projection Weld
Seam Seal
Squared corner and dot on top
of case indicate pin one.
1.130 max. (28.70)
0.960 (24.38)
1
4
5
6
0.905 (22.99)
1.105 (28.07)
Flange thickness: 0.047 (1.19)
Seal hole: 0.080 ±0.002 (2.03 ±0.05)
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
2.005 max
(50.93)
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.
Materials
Header
Cold Rolled Steel/Nickel/Gold
Cover
Kovar/Nickel
Pins
#52 alloy/Gold compression glass seal
Case G2, Rev C, 20060111
Please refer to the numerical dimensions for accuracy. All 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.
Copyright © 1999-2006 Interpoint Corp. All rights reserved.
FIGURE 34: CASE G2 — TRIPLE MODELS
www.craneae.com
Page 18 of 20
Rev K - 20060613
1.590 (40.39)
7
2.005 max. (50.93)
8
0.705 (17.91)
0.000
0.505 (12.83)
9
0.140 (3.56)
0.25 (6.35)
0.000
0.330 max.
(8.38)
0.25 (6.35)
0.000
3
0.128 dia
(3.25)
0.160
(4.06)
0.000
0.330 max.
(8.38)
2
0.560
(14.22)
0.205 (5.21)
0.030 dia.
(0.76)
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 15 WATT
883, CLASS H, QML PRODUCTS – ELEMENT EVALUATION
ELEMENT EVALUATION
STANDARD
(NON-QML)1
M/S2
P3
TEST PERFORMED
(COMPONENT LEVEL)
CLASS H,
QML
2
M/S
P3
Element Electrical (probe)
yes
no
yes
yes
Element Visual
no
no
yes
yes
Internal Visual
no
no
yes
no
Final Electrical
no
no
yes
yes
Wire Bond Evaluation4
no
no
yes
yes
SLAM™/C-SAM:
Input Capacitors only
(Add’l test, not req. by H or K)
no
no
no
yes
Definitions:
Element Evaluation: Component testing/screening per MIL-STD-883 as determined by MIL-PRF-38534
SLAM™: Scanning Laser Acoustic Microscopy
C-SAM: C - Mode Scanning Acoustic Microscopy
Notes:
1. Non-QML products do no meet all of the requirements of MIL-PRF-38534
2. M/S = Active components (Microcircuit and Semiconductor Die)
3. P = Passive components
4. Not applicable to EMI filters that have no wire bonds
www.craneae.com
Page 19 of 20
Rev K - 20060613
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
28 VOLT INPUT – 15 WATT
883, CLASS H, QML PRODUCTS – ENVIRONMENTAL
SCREENING
TEST
125°C
STANDARD
non-QML
125°C
/ES
non-QML
Class H
/883
QML
Pre-cap Inspection
Method 2017, 2032
yes
yes
yes
Temperature Cycle (10 times)
Method 1010, Cond. C, -65°C to 150°C, ambient
Method 1010, Cond. B, -55°C to 125°C, ambient
no
no
no
yes
yes
no
Constant Acceleration
Method 2001, 3000 g
Method 2001, 500g
no
no
no
yes
yes
no
Burn-In
Method 1015, 160 hours at 125°C case, typical
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 case
Subgroups 1 and 4: +25°C case
no
yes
no
yes
yes
no
Hermeticity Test
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.
MHF+ Single, Dual and Triple. Rev K- 20060613. 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. MHF+ Series is a trademark of
Interpoint. Copyright © 1994 - 2006 Interpoint Corporation. All rights reserved. www.craneae.com
Page 20 of 20
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