DESCRIPTION
MHF+ SINGLE AND 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 (MHF+281R9S, 20 to 32 volts) and up to 15 watts of
output power. The units are capable of withstanding short
term transients up to 50 volts. The converters are offered with
standard screening, “ES” screening, or fully compliant to “883”
MIL-PRF-38534 Class H screening. Standard microcircuit
drawings (SMD) are available.
Co n v e r t e r De s i g n
The MHF+ converters are switching regulators that use a
quasi-square wave, single-ended forward converter design with
a constant switching frequency of 550 kHz typical. 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. See Figure 1.
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.
in h i b i t Fu n C t i o n
MHF+ converters provide an inhibit terminal that can be used to
disable internal switching, resulting in no output current and very
low quiescent input current. The converter is inhibited when an
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. See Figure 3.
sy n C h r o n i z a t i o n
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 signal input of the desired frequency to
pin 5. The capacitively coupled sync input will synchronize on
a differential signal of as low as 4 volts to as high as 5 V. For
single and dual output models, if the sync function is not used,
connect the terminal to input common.
sh o r t Ci r C u i t Pr o t e C t i o n
MHF+ Series single and dual output 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.
un D e r v o l t a g e lo C k o u t
Undervoltage lockout prevents the single and dual output
converters from operating below approximately 14 VDC input
voltage to keep system current levels smooth, especially during
initialization or re-start operations.
FEATURES
Only 0.33 inches (8.38 mm) high in a
hermetically sealed case
Operating temperature –55° to +125°C
Input voltage 16 to 40 VDC
- MHF+281R9S 20 to 32 VDC
- Triple output models16 to 48 VDC
Transient protection
- Single and dual: 50 V for 50 ms
- Triple: 80 V for 120 ms
Fully isolated
Fixed high frequency switching
Inhibit and synchronization functions
Indefinite short circuit protection
Up to 84% efficiency
MODELS
VDC Ou t p u t
SINGLE
1.9
3.3
5
5.2
5.3
12
15
28
DUAL
±5
±12
±15
TRIPLE
+5 & ±12
+5 & ±15
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
Crane Aerospace & Electronics
Electronics Group (Interpoint Brand)
www.interpoint.com
Page 1 of 23
MHF+ Rev L - 20091113
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.
Co n v e r t e r De s i g n
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 auxiliary output voltages. See Figure 2.
The phase-shifted design offers reduced input and output ripple.
To meet MIL-STD-461 requirements use an EMI filter, see Figure
5. FMH-461 is the recommended filter.
in h i b i t Fu n C t i o n
An open collector inhibit terminal (pin 1) provides shut-down and
start-up control. Applying an active low of <0.8 V, referenced to
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 active high voltages
of up to 11 volts. (Refer to Figure 2 for a connection diagram.)
An open collector interface is not required if the active high is in
excess of the open circuit voltage of the inhibit terminal (11 volts)
but less than 40 volts. See Figure 2.
so F t st a r t Fe a t u r e
The soft-start feature provides a controlled 25 milliseconds
maximum turn-on to minimize inrush current and reduce
overshoot at initial start-up or when inhibit is released.
sy n C h r o n i z a t i o n
To synchronize the converter’s switching frequency to a system
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. For triple output models, if the sync function is not used,
the terminal should be left open. See Figure 4.
sh o r t Ci r C u i t Pr o t e C t i o n
On the triple output models, internal current limiting circuitry
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.
un D e r v o l t a g e lo C k o u t
Undervoltage lockout prevents the triple output models units from
operating below approximately 8.5 VDC input voltage to keep
system current levels smooth, especially during initialization or
re-start operations.
MHF+ SERIES™ ALL MODELS
Pa C k a g i n g
MHF+ Series of converters are packaged in hermetically sealed
metal cases and 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.
ou t P u t vo l t a g e oP t i o n s
The MHF+ Series converters are capable of providing other
output voltage options in addition to those characterized on this
datasheet. Contact your sales representative to discuss other
output voltage options.
us Pa t e n t s
Interpoint converters may use one or more of the following US
patents 5,521,807, 5,694,303 and 5,631,822.
www.interpoint.com Page 2 of 23
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
MHF+ Rev L - 20091113
OPERATING CONDITIONS AND CHARACTERISTICS
Input Voltage Range
Single and dual models:
16 to 40 VDC continuous ‣
MHF+281R9S 20 to 32 DC continuous ‣
50 V for up to 50 ms transient ‣
MHF+281R9S 35 V for up to 50 ms transient ‣
Triple models:
16 to 48 VDC continuous ‣
80 V for up to 120 ms transient ‣
Output Power
6.65 to 15 watts depending on model
Power Dissipation (Pd)
Single and dual models: 6 watts
1.9 and 3.3V single: 8 watts
Triple models: 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
Single and dual models: 115% of full load typical
Triple models: 130% of full load typical triple
Isolation
100 megohm minimum at 500 V
Audio Rejection
50 dB typical
Conversion Frequency (-55°C to +125°C TC)
Free run
Single and dual models: 480 kHz min, 550 kHz typ, ‣
620 kHz max
Triple models: 375 kHz min, 500 kHz max ‣
Undervoltage Lockout
Single and dual models: 14 V input typical
Triple models: 8.5 V input typical
SYNC AND INHIBIT
Sync In
Input frequency
Single and dual models: 500 to 600 kHz ‣
Triple models: 400 to 600 kHz ‣
Duty cycle 40% to 60% ‣
Active low 0.8 V max
Active high 4 V min, 5 V max
Triple models: source impedance should be <100 ohms and
the transition time should be <100 nanoseconds
If sync is not used
Single and dual models: connect to input common ‣
Triple models: leave unconnected ‣
Referenced to input common
Inhibit:
Active low (output disabled)
‣
Inhibit pin current -
Single and dual models: 4.0 mA max, 3.0 mA typ ·
Triple models: 5.0 mA max, 3.0 mA typ ·
Referenced to input common ‣
Active high (output enabled)
Single and dual models ‣
Open collector or unconnected -
Open pin 8.5 to 12 V, 10 V typical -
Triple models ‣
Open collector or unconnected -
Open collector interface not required if active high is -
greater than 11 V and less than 40V
Open pin voltage, 11 V typical -
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.
Single and dual models: 30 grams
Triple models: 35 grams
Screening:
Standard, ES or 883 (Class H). See Screening Tables 1 and 2 for
more information.
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Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
MHF+ Rev L - 20091113
PWM CM
CONTROLLER
0°
180°
PWM CM
CONTROLLER
Input
Common FEEDBACK ISOLATOR
FEEDBACK ISOLATOR
Output
Common
+ Aux.
Output
–Aux.
Output
Positive
Input
Synv
+5 Output
Fi g u r e 2: MHF+ tr i p l e Ou t p u t Bl O C k Di a g r a M
PWM
Controller
ID
IC
Limit Ref.
Output
Common
Positive
Output
Positive
Input
Inhibit
Input
Common
5µH
2µF
FET
Driver
Fi g u r e 1: MHF+ Si n g l e Ou t p u t Bl O C k Di a g r a M
SIMPLIFIED SCHEMATIC DIAGRAMS
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Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
MHF+ Rev L - 20091113
CONNECTION DIAGRAMS
9
1
8
200 pF
3.9 K
10 K
INHIBIT
MHF+
INPUT
COMMON
POSITIVE INPUT
10 k
1N4148
2N3501
Fi g u r e 3: in H i B i t in t e r F a C e
Positive Input
1
5
28V
Input Common
FMH-461
EMI FILTER
Positive Output
Output Common
3
Positive Input
Input Common
MHF+
2
4
Case*
*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.
Chassis Ground
Case Ground
Case Ground
Fi g u r e 5: eMi Fi l t e r CO n n e C t i O n
+5
Load
Positive Input
9
7
1
8
2
4
5
28V
Sync In
Inhibit
Input Common
+5 Output
Output Common
– Aux. Output
+ Aux.
Load
3
– Aux.
Load
+ Aux. Output
0.01 F
5.1k
Fi g u r e 4: aC CO u p l i n g O F Sy n C Si g n a l , tr i p l e MO D e l S
If the sync terminal ([pin 7) is not used, it must be left
floating. The ac coupling shown will prevent sync signal
failure.
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Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
MHF+ Rev L - 20091113
1. Pin 3 of MHF+2828S will provide 14 Vout referenced to output common (pin 4).
Fi g u r e 6: MHF+ Si n g l e a n D Du a l pin Ou t
BOTTOM VIEW
MHF+ SINGLE AND DUAL
Dot on top of case
indicates pin one.
Dotted line outlines flanged package option.
1 2345
8 7 6
See cases E1 and G1 for dimensions.
Fi g u r e 7: MHF+ tr i p l e pin Ou t
Dotted line outlines flanged package option.
1 2345
9 8 6
7
Squared corner and dot on top
of case indicate pin one.
BOTTOM VIEW
MHF+ Triple
See cases E2 and G2 for dimensions.
PIN OUT
Pin Single Output MHF+2828S Dual Output Triple Output
1 Inhibit Inhibit Inhibit Inhibit
2 No Connection Positive Output Positive Output Main (+5) Output
3 Output Common (See note 1) Output Common Output Common
4 Positive Output Output Common Negative Output Pos. Aux. Output
5 Sync In Sync In Sync In Neg. Aux. Output
6 Case Ground Case Ground Case Ground Case Ground
7 Input Common Input Common Input Common Sync
8 Positive Input Positive Input Positive Input Input Common
9 — — — Positive Input
PINS NOT IN USE
Inhibit: single, dual and triple, pin 1 Leave unconnected
MHF+2828S, pin 3 Leave unconnected
Sync: single and dual, pin 5 Connect to input common
Sync: triple, pin 7 Leave unconnected
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MHF+ Single, Dual and Triple DC/DC Converters
MHF+ Rev L - 20091113
MODEL NUMBERING KEY
MHF+ 28 12 D F / 883
Base Model
Input Voltage
Output Voltage
Screening
Number of Outputs
(S = single, D = dual, T = Triple)
(R = decimal point, 3R3 = 3.3 Vout;
(Standard screening has no designator
in this position.)
Case Option
(Non-flanged case has no designator in
this position)
Main and aux. Vout for triple models)
SMD NUMBERS
St a n D a r D Mi C r O C i r C u i t
Dr a w i n g (SMD)
MHF+ Si M i lar pa r t
5962-0251001HXC MHF+283R3S/883
5962-9213901HXC MHF+2805S/883
5962-0325301HXC MHF+285R2S/883
5962-9166401HXC MHF+2812S/883
5962-9160101HXC MHF+2815S/883
5962-9689801HXC MHF+2828S/883
5962-9555901HXC MHF+2805D/883
5962-9214401HXC MHF+2812D/883
5962-9161401HXC MHF+2815D/883
5962-9560101HXC MHF+28512T/883
5962-9560201HXC 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
On t H e l i n e S B e l O w , e n t e r O n e S e l e C t i O n F r O M e a C H C a t e g O r y t O D e t e r M i n e t H e M O D e l n u M B e r .
CATEGORY
MHF+28
___________ /
Base Model and
Input Voltage
Output Voltage 1Number of Outputs 2 Case/Lead Options 3Screening 4
1R9, 3R3, 05, 5R2,
5R3, 12, 15, 28
S(NON-FLANGED leave blank) (STANDARD
leave blank)
MHF+28 is the only
available option
05, 12, 15 D F (FLANGED) ES
SELECTION 512, 515 T 883
Notes:
1. Output Voltage: An R indicates a decimal point. 1R9 is 1.9 volts out. The values of 1R9, 3R3, 5R2 and 5R3 are only available in single output models. The 512 and
515 triple output converters are +5 volt main and ±12 or ±15 volt auxiliaries.
2. Number of Outputs: S is a single output, D is a dual output, and T is a triple output
3. Case Options: For the standard case (non-flanged) leave the case option blank. For the flanged case, use an F in the case option.
4. Screening: For standard screening leave the screening option blank. For other screening options, insert the desired screening level. For more information see
Screening Tables 1 and 2.
www.interpoint.com Page 7 of 23
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
MHF+ Rev L - 20091113
Notes
1. Guaranteed by design, not tested.
2. For MHF+281R9, load regulation is tested from a 10 mA load to full load.
3. Indefinite short circuit protection not guaranteed above 125°C (case).
4. Recovery time is measured from application of the transient.
to the point at which VOUT is within regulation.
5. Step transition time >10 µs.
6. Step line is 20 - 32 - 20 VDC for MHF+281R39S.
Electrical Characteristics: -55° TO +125°C TC , 28 VDC Vin, 100% load, free run, unless otherwise specified.
SINGLE OUTPUT MODELS MHF+281R9S MHF+283R3S MHF+2805S
unitS
paraMeter COnDitiOnS MIN TYP MAX MIN TYP MAX MIN TYP MAX
Output VOltage 1.84 1.90 1.96 3.20 3.30 3.40 4.85 5.00 5.15 VDC
Output Current Vin = 16 t O 40 VDC 0 – 3.5 0 — 2.4 0 — 2.4 A
Output pOwer Vin = 16 t O 40 VDC 0 — 6.65 0 — 8 0 — 12
Output ripple tC = 25°C — 7 30 — 30 80 — 30 80 mV p-p
10 kHz - 2 MHz— 12 40 — 50 240 — 60 100
line regulatiOn Vin = 16 tO 40 VDC — 1 40 – 5 100 — 5 50 mV
lOaD regulatiOn nO lOaD tO Full 2 — 35 55 – 20 50 — 20 50 mV
input VOltage
nO lOaD tO Full
COntinuOuS 20 28 32 16 28 40 16 28 40 VDC
tranSient 50 ms 1— — 35 — — 50 — — 50 V
input Current nO lOaD — 16 35 — 25 40 — 25 40 mA
inHiBiteD — 2 7 — 5 12 — 5 12
input ripple Current tC = 25°C — 30 60 – 45 80 — 35 80 mA p-p
10 kHz - 10 MHz— — 70 — — 120 — — 100
eFFiCienCy 56 62 — 67 75 – 72 77 — %
lOaD Fault 3, 4 pOwer DiSSipatiOn
SHOrt CirCuit
— 4 8 — 5 8 — 3.5 6
reCOVery 1— 5 30 — 7.5 30 — 7.5 30 ms
Step lOaD
reSpOnSe 4, 5
50% - 100% - 50%
tranSient — ±75 ±500 — ±150 ±400 — ±150 ±400 mV pk
reCOVery — 500 2000 — 150 300 — 150 300 µs
Step line
reSpOnSe 1, 4, 5
16 - 40 - 16 VDC 6
tranSient — ±300 ±600 — ±550 ±800 — ±550 ±800 mV pk
reCOVery — 0.5 1.2 — 0.8 1.2 — 0.8 1.2 ms
Start-up 5Delay — 12 35 – 10 25 — 10 25 ms
OVerSHOOt 1— 500 850 — 200 300 — 100 600 mV pk
CAPACITIVE LOAD 1— — 100 – – 300 – – 300 µF
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Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
MHF+ Rev L - 20091113
Notes
1. Guaranteed by design, not tested.
2. Indefinite short circuit protection not guaranteed above 125°C (case).
3. Recovery time is measured from application of the transient.
to the point at which VOUT is within regulation.
4. Step transition time >10 µs.
Electrical Characteristics: -55° TO +125°C TC , 28 VDC Vin, 100% load, free run, unless otherwise specified.
SINGLE OUTPUT MODELS MHF+285R2S MHF+285R3S MHF+2812S
unitS
paraMeter COnDitiOnS MIN TYP MAX MIN TYP MAX MIN TYP MAX
Output VOltage 5.04 5.20 5.36 5.19 5.35 5.51 11.76 12.00 12.24 VDC
Output Current Vin = 16 t O 40 VDC 0 — 2.4 0 — 2.83 0 — 1.25 A
Output pOwer Vin = 16 t O 40 VDC 0 — 12.48 0 — 15 0 — 15
Output ripple tC = 25°C — 30 50 — 30 50 — 30 80 mV p-p
10 kHz - 2 MHz— 60 100 — 60 100 — 50 120
line regulatiOn Vin = 16 tO 40 VDC — 5 50 — 5 50 — 5 50 mV
lOaD regulatiOn nO lOaD tO Full — 20 50 — 20 50 — 20 50 mV
input VOltage
nO lOaD tO Full
COntinuOuS 16 28 40 16 28 40 16 28 40 VDC
tranSient 50 ms 1— — 50 — — 50 — — 50 V
input Current nO lOaD — 25 43 — 24 43 — 25 50 mA
inHiBiteD — 5 12 — 5 12 — 5 12
input ripple Current tC = 25°C — 35 80 — 35 80 — 35 80 mA p-p
10 kHz - 10 MHz— — 120 — — 120 — — 120
eFFiCienCy 72 77 — 72 77 — 74 79 — %
lOaD Fault 2, 3 pOwer DiSSipatiOn
SHOrt CirCuit — 3.5 6 — 3.5 6 — 3.5 6
reCOVery 1 — 7.5 30 — 7.5 30 — 7.5 30 ms
Step lOaD
reSpOnSe 4, 3
50% - 100% - 50%
tranSient — ±150 ±400 — ±150 ±400 — ±150 ±500 mV pk
reCOVery — 150 300 — 150 300 — 150 300 µs
Step line
reSpOnSe 1, 3, 4
16 - 40 - 16 VDC
tranSient — ±550 ±800 — ±550 ±800 — ±550 ±800 mV pk
reCOVery — 0.8 1.2 — 0.8 1.2 — 0.8 1.2 ms
Start-up 4Delay — 10 25 — 10 25 — 10 25 ms
OVerSHOOt 1— 100 600 — 100 600 — 200 1200 mV pk
CAPACITIVE LOAD 1— — 300 — — 300 — — 100 µF
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MHF+ Single, Dual and Triple DC/DC Converters
MHF+ Rev L - 20091113
Electrical Characteristics: -55° TO +125°C TC, 28 VDC Vin, 100% load, free run, unless otherwise specified.
Notes
1. Guaranteed by design, not tested.
2. Indefinite short circuit protection not guaranteed above 125°C (case).
3. Recovery time is measured from application of the transient .
to the point at which VOUT is within regulation.
4. Step transition time >10 µs.
SINGLE OUTPUT MODELS MHF+2815S MHF+2828S
unitS
paraMeter COnDitiOnS MIN TYP MAX MIN TYP MAX
Output VOltage 14.70 15.00 15.30 27.44 28.00 28.56 VDC
Output Current Vin = 16 t O 40 VDC 0 — 1.00 0 — 0.536 A
Output pOwer Vi n = 16 t O 40 VDC 0 — 15 0 — 15
Output ripple tC = 25°C — 30 80 — 60 120 mV p-p
10 kHz - 2 MHz— 50 120 — 100 180
line regulatiOn Vin = 16 tO 40 VDC — 5 50 — 50 150 mV
lOaD regulatiOn nO lOaD tO Full — 20 50 — 50 150 mV
input VOltage
nO lOaD tO Full
COntinuOuS 16 28 40 16 28 40 VDC
tranSient 50 ms 1— — 50 — — 50 V
input Current nO lOaD — 25 62 — 25 60 mA
inHiBiteD — 5 12 — 5 12
input ripple Current tC = 25°C — 35 80 — 35 80 mA p-p
10 kHz - 10 MHz— — 120 — — 120
eFFiCienCy 74 80 — 78 84 — %
lOaD Fault 2, 3 pOwer DiSSipatiOn
SHOrt CirCuit — 3.5 6 — 3.5 6
reCOVery 1— 7.5 30 — 7.5 30 ms
Step lOaD
reSpOnSe 3, 4
50% - 100% - 50%
tranSient — ±200 ±600 — ±600 ±800 mV pk
reCOVery — 150 300 — 200 400 µs
Step line
reSpOnSe 1, 3, 4
16 - 40 - 16 VDC
tranSient — ±550 ±800 — ±1100 ±1200 mV pk
reCOVery — 0.8 1.2 — 0.8 1.2 ms
Start-up 4Delay — 10 25 — 10 25 ms
OVerSHOOt 1— 200 1500 — 200 280 mV pk
CAPACITIVE LOAD 1 — — 100 — — 100 µF
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MHF+ Single, Dual and Triple DC/DC Converters
MHF+ Rev L - 20091113
Electrical Characteristics: -55° TO +125°C TC, 28 VDC Vin, 100% load, free run, unless otherwise specified.
DUAL OUTPUT MODELS MHF+2805D MHF+2812D MHF+2815D
unitS
paraMeter COnDitiOnS Min typ MaX Min typ MaX Min typ MaX
Output VOltage +VO u t 4.85 5.00 5.15 11.76 12.00 12.24 14.70 15.00 15.30 VDC
-VO u t 4.82 5.00 5.18 11.70 12.00 12.30 14.63 15.00 15.38
Output Current 2, 3 ea C H Ou t p u t 0 ±1.2 1.92 10 ±0.625 1.125 10 ±0.50 0.90 1
A
Vin = 16 t O 40 VDC tO t a l — — 2.4 — — 1.25 — — 1.0
Output pOwer 2, 3 ea C H Ou t p u t 0 ±6 9.6 10 ±7.5 13.5 10 ±7.5 13.5 1
Vin = 16 t O 40 VDC tO t a l — — 12 — — 15 — — 15
Output ripple tC = 25°C — 30 80 — 30 80 — 30 60 mV p-p
±VOut, 10kHz - 2 MHz— 60 80 — 60 120 — 50 120
line regulatiOn
Vin = 16 t O 40 VDC
+VO u t — 5 50 — 5 50 — 5 50 mV
-VO u t — — 80 — — 100 — — 100
lOaD regulatiOn
Ba l a n C e D lO a D S
nO lO a D t O Fu l l
+VO u t — 20 50 — 20 50 — 20 50 mV
-VO u t — — 100 — — 100 — — 100
CrOSS regulatiOn 425°C
eFFeCt On -VO u t
— 6 7.5 — 3 6 — 3 5 %
input VOltage COntinuOuS 16 28 40 16 28 40 16 28 40 VDC
tranSient 50 ms 1— — 50 — — 50 — — 50 V
input Current nO lOaD — 20 40 — 25 50 — 25 50
mA
inHiBiteD — 6 12 — 5 12 — 5 12
input ripple Current tC = 25°C — 20 50 — 35 60 — 35 60 mA p-p
10 kHz - 10 MHz— 40 80 — 50 100 — 50 100
eFFiCienCy 75 79 — 74 83 — 75 84 — %
lOaD Fault 5, 6 pOwer DiSSipatiOn
SHOrt CirCuit — 3 6 — 3 6 — 3 6
reCOVery 1— 7.5 30 — 7.5 30 — 7.5 30 ms
Step lOaD
reSpOnSe 7, 8
50% - 100% - 50%
Ba l a n C e D lO a D S
tranSient +VO u t — ±200 ±600 — ±300 ±700 — ±300 ±700 mV pk
tranSient -VO u t — ±150 ±600 — ±100 ±700 — ±100 ±700
reCOVery — 150 500 — 200 500 — 200 500 µs
Step line
reSpOnSe 1, 8
±VO u t
16 - 40 - 16 Vi n
tranSient — ±600 ±800 — ±550 ±750 — ±550 ±750 mV pk
reCOVery — 0.8 1.2 — 0.8 1.2 — 0.8 1.2 ms
Start-up 8
Vin = 40 V
Delay — 12 20 — 12 25 — 12 25 ms
OVerSHOOt 1— 80 250 — 200 750 — 200 750 mV pk
CAPACITIVE LOAD 1— — 47 — — 10 — — 10 µF
Notes (see following page)
www.interpoint.com Page 11 of 23
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
MHF+ Rev L - 20091113
Notes for Dual Output Models
1. Guaranteed by design, not tested.
2. Up to 13.5 watts, 90% (9.6 watts, 80% for 2805D) of the total output power is
available from either output provided that the opposite output is simultaneously
carrying 10% (20% for 2805D) of the total output power. One of the outputs must
always provide a minimum of 10% (20% for 2805D) of the total output power
used to meet cross regulation. Negative Vout cross regulation is referenced to
50%/50% balanced loads (at 100% of total rated output power - full load).
3. The “Total” specification is the maximum combined current/power of both outputs.
4. Effect on –VOUT for the following conditions, A and B:
Condition A:
+Po = 50% to 10% and –Po = 50%
+Po = 50% and –Po = 50% to 10%
Condition B, outputs are switched simultaneously between the “From” and “To”
conditions:
From +Po = 70%, –Po = 30%
To +Po = 30%, –Po = 70%
Both conditions are referenced to the balanced loads
condition: 50%/50%
5. Indefinite short circuit protection not guaranteed above 125°C (case)
6. Recovery time is measured from application of the transient to point at
which VOUT is within regulation.
7. Response of either output with the opposite output held at half of the total output
power.
8. Step transition time >10 µs.
Electrical Characteristics: -55° TO +125°C TC, 28 VDC Vin, 100% load, free run, unless otherwise specified.
www.interpoint.com Page 12 of 23
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
MHF+ Rev L - 20091113
Electrical Characteristics: -55° TO +125°C TC, 28 VDC Vin, 100% load, free run, unless otherwise specified.
TRIPLE OUTPUT MODEL – MHF+28512T 5 2 (MAIN) ±12 (AUXILIARIES)
unitS
paraMeter COnDitiOnS MIN TYP MAX MIN TYP MAX
Output VOltage VO u t 4.85 25.00 5.15 ±11.52 ±12.00 ±12.48 VDC
Output Current 3— — 1.5 0 ±0.313 0.416 1
A
tO t a l — — 1.5 — — 0.625
Output pOwer 4— — 7.5 — ±3.75 5 1
Vin = 16 - 48 VDC tO t a l — — 7.5 — — 7.5
Output ripple 10 kHz - 2 MHz— 20 90 — ±30 ±180 mV p-p
line regulatiOn Vin= 16 t O 48 VDC — 25 75 — ±120 ±240 mV
lOaD regulatiOn 6NO LOAD TO FULL — 22 75 — ±120 ±240 mV
CrOSS regulatiOn 6
tC = 25°C
eFFeCt On negatiVe
auXiliary — — — — — 6.25 %
input VOltage COntinuOuS 16 28 48 — — — VDC
tranSient 1 120 ms — — 80 — — — V
input Current nO lOaD — 30 45 — — — mA
inHiBiteD — 3 5 — — —
input ripple Current 10 kHz - 20 MHz — 20 50 — — — mA p-p
eFFiCienCy 72 76 — — — — %
lOaD Fault 7, 9
SHORT CIRCUIT — — 12 — — ±12
reCOVery 1— — 25 — — 25 ms
Step lOaD reSpOnSe 8, 9 tranSient — — ±850 — — ±950 mV pk
reCOVery — 5 8 — 2 3 ms
Step line
reSpOnSe 1, 9, 10
16 - 48 - 16
tranSient — — ±800 — — ±800 mV pk
reCOVery — — 5 — — 5 ms
Start-up Delay
nO lOaD anD Full — 10 25 — 10 ±25 ms
OVerSHOOt 1— — 500 — — ±500 mV pk
Notes
1. Guaranteed by design, not tested.
2. If running with external sync, at temperature extremes VOUT main may be
a minimum of 4.80 VDC to a maximum of 5.20 VDC.
3. The sum of the 12 volt auxiliary output currents may not exceed 625 mA.
4. The sum of the auxiliary output power may not exceed 7.5 watts. Up to 5
watts (approximately 66%) of the total auxiliary output power is available
from either output providing the opposite output is simultaneously carrying
2.5 watts (approximately 33%) of the total auxiliary power.
5. Load regulation for the +5 is specified at 0.0 to 1.5 A with the auxiliaries
-
the +5 held at 1.5 A.
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:
8. Step transition time > 10 µs.
9. Time to settle to within 1% of VOUT final value.
10. Step transition time between 2 and 10 µs.
www.interpoint.com Page 13 of 23
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
MHF+ Rev L - 20091113
TRIPLE OUTPUT MODEL – MHF+28515T 5 2 (MAIN) ±15 (AUXILIARIES)
unitS
paraMeter COnDitiOnS MIN TYP MAX MIN TYP MAX
Output VOltage VO u t 4.85 5.00 5.15 14.40 15.00 15.60 VDC
Output Current 3— — 1.5 0 ±0.250 0.333 1
A
tOtal — — 1.5 — — 0.500
Output pOwer 9— — 7.5 — ±2.5 5 1
Vin = 16 t O 48 VDC tOtal — — — — — 7.5
Output ripple 10 kHz - 2 MHz— 20 90 — ±30 ±225 mV p-p
line regulatiOn Vin= 16, 48 VDC — 25 75 — ±150 ±300 mV
lOaD regulatiOn 5
nO lOaD tO Full Vin = 28 VDC — 25 75 — ±150 ±300 mV
CrOSS regulatiOn 6
tC = 25°C
eFFeCt On negatiVe
auXiliary Output — — — — — 5.0 %
input VOltage COntinuOuS 16 28 48 — — — VDC
tranSient 1 120 ms — — 80 — — — V
input Current nO lOaD — 30 45 — — — mA
inHiBiteD — 3 5 — — —
input ripple Current 10 kHz - 20 MHz — 20 50 — — — mA p-p
eFFiCienCy 72 76 — — — — %
lOaD Fault 7, 9
SHORT CIRCUIT
— — 12 — — ±12
reCOVery 1— — 25 — — 25 ms
Step lOaD reSpOnSe 8, 9 tranSient — — ±850 — — ±950 mV pk
reCOVery — 5 8 — 2 3 ms
Step line
reSpOnSe 1, 9, 10
16 - 48 - 16 Vin
tranSient — — ±800 — — ±800 mV pk
reCOVery — — 5 — — 5 ms
Start-up Delay
nO lOaD anD Full — 10 25 — 10 25 ms
OVerSHOOt 1— — 500 — — ±500 mV pk
Notes
1. Guaranteed by design, not tested.
2. If running with external sync, at temperature extremes VOUT main may be
a minimum of 4.80 VDC to a maximum of 5.20 VDC.
3. The sum of the 15 volt auxiliary output currents may not exceed 500 mA.
4. The sum of the auxiliary output power may not exceed 7.5 watts. Up to 5
watts (approximately 66%) of the total auxiliary output power is available
from either output providing the opposite output is simultaneously carrying
2.5 watts (approximately 33%) of the total auxiliary power.
5. Load regulation for the +5 is specified at 0.0 to 1.5 A with both auxiliaries
held at 1.5 A.
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:
8. Step transition time > 10 µs.
9. Time to settle to within 1% of VOUT final value.
10. Step transition time between 2 and 10 µs.
Electrical Characteristics: -55° TO +125°C TC, 28 VDC Vin, 100% load, free run, unless otherwise specified.
www.interpoint.com Page 14 of 23
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
MHF+ Rev L - 20091113
Fi g u r e 11 Fi g u r e 13
OUTPUT POWER (Watts)
MHF+2805D EFFICIENCY
EFFICIENCY (%)
40
90
80
70
60
50
2
46 81012
40V
28V
16V
OUTPUT POWER (Watts)
MHF+2815D EFFICIENCY
EFFICIENCY (%)
40
90
80
70
60
50
246810 12 14
40V
28V
16V
OUTPUT POWER (Watts)
MHF+2805S EFFICIENCY
EFFICIENCY (%)
40
90
80
70
60
50
246 81012
16V
28V
40V
Fi g u r e 8
OUTPUT POWER (Watts)
MHF+2812S EFFICIENCY
EFFICIENCY (%)
40
90
80
70
60
50
2
46 81012 14
16V
40V
28V
15
Fi g u r e 9
OUTPUT POWER (Watts)
MHF+2812D EFFICIENCY
EFFICIENCY (%)
40
90
80
70
60
50
2468101214
40V
28V
16V
15
Fi g u r e 12
Fi g u r e 10
OUTPUT POWER (Watts)
MHF+2815S EFFICIENCY
EFFICIENCY (%)
40
90
80
70
60
50
2468101214
16V
40V
15
28V
FREQUENCY (kHz)
MHF+ SERIES AUDIO REJECTION
ATTENUATION (dB)
–1000.1 110 100
–90
–80
–70
–60
–50
–40
–20
–10
0
–30
Fi g u r e 14
1ms/div
16V TO 40V
MHF+2805S STEP LINE RESPONSE
500mV/div.
V
IN
20V/div.
VOUT
Fi g u r e 15 Fi g u r e 16
50µs/div
50% 100%
MHF+2805S STEP LOAD RESPONSE
100mV/div.
50% to 100%
100% to 50%
Typical Performance Curves: 25°C Tc , 28 VDC Vin, 100% load, free run, unless otherwise specified.
www.interpoint.com Page 15 of 23
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
MHF+ Rev L - 20091113
Fi g u r e 23 Fi g u r e 25
POSITIVE OUTPUT LOAD (% OF TOTAL LOAD)
–VOUT WITH SHIFT IN LOAD BALANCE
CROSS REGULATION
–V
OUT
VOLTAGE CHANGE (%)
–10 1000 20 40 60 80
–5
0
5
10
2812D
2815D
2805D
OUTPUT POWER (Watts)
50 mV DROP
LOW LINE DROPOUT VS. LOAD
INPUT VOLTAGE (Volts)
10 11 12 13 14 15
14
15
16
MHF+2812S&D
MHF+2815S&D
MHF+2805S&D
13
12
50µs/div
50% 100%
MHF+2815D +V
OUT
STEP LOAD RESPONSE
100mV/div.
50% to 100%
100% to 50% PO= 7.5 W
Fi g u r e 20
50µs/div
20% 100%
MHF+2815D +VOUT STEP LOAD RESPONSE
100mV/div.
20% to 100%
100% to 20%
PO= 7.5 W
Fi g u r e 21
OUTPUT LOAD (%)
COND. A: 50% LOAD +V; 50% to 10% –V
COND. B: 50% LOAD –V; 50% to 10% +V
MHF+2805D/MHF+2812D/MHF+2815D
CROSS REGULATION
–VOUT VOLTAGE CHANGE (%)
–10
0
10
10 20 30 40 50
–8
–6
–4
–2
2
4
6
8
2815D
2812D
2812D
COND B
COND A
2805D
2805D
Fi g u r e 24
Fi g u r e 22
2 ms/div
MHF+2815D TURN-ON INTO FULL LOAD
20V/div.
V
IN
5V/div.
+VOUT
–VOUT
Fi g u r e 17 Fi g u r e 19
200µs/div
10% 100%
MHF+2805S STEP LOAD RESPONSE
100mV/div.
10% to 100%
100% to 10%
1 ms/div
16V TO 40V
MHF+2815D STEP LINE RESPONSE
200mV/div.
V
IN
20V/div.
+VOUT
2 ms/div
MHF+2805S TURN-ON INTO FULL LOAD
1V/div.
V
IN
20V/div.
VOUT POUT= 12W
Fi g u r e 18
Typical Performance Curves: 25°C Tc , 28 VDC Vin, 100% load, free run, unless otherwise specified.
www.interpoint.com Page 16 of 23
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
MHF+ Rev L - 20091113
Typical Performance Curves: 25°C Tc , 28 VDC Vin, 100% load, free run, unless otherwise specified.
Fi g u r e 29
Fi g u r e 31
MHF+28512T TURN ON INTO FULL LOAD
MAIN
5 ms / div.
+5 VDC
2 V / div.
MHF+28515T has a similar response
10 V / div.
VIN
INPUT
GND
+5
GND
MHF+28512T TURN ON INTO FULL LOAD
AUXILIARIES
5 ms / div.
–12 VDC
5 V / div.
+12 VDC
MHF+28515T has a similar response
10 V / div.
VIN
16
EFFICIENCY
55
80
60
65
70
75
46
810 12 14
16 V
28 V
48 V
2
MHF+28512T EFFICIENCY
OUTPUT POWER (W)
Fi g u r e 26
16
EFFICIENCY
55
80
60
65
70
75
246
810 12 14
16 V
48 V
MHF+28515T EFFICIENCY
OUTPUT POWER (W)
28 V
Fi g u r e 27
MHF+28512T TURN ON INTO FULL LOAD
MAIN
5 ms / div.
+5 VDC
2 V / div.
MHF+28515T has a similar response
10 V / div.
VIN
INPUT
GND
+5
GND
Fi g u r e 30
Fi g u r e 28
MHF+28512T has a similar response
MHF+ 28515T STEP
LINE RESPONSE
500 mV / div.
5 ms / div.
–15 VDC
±15 = 250 mA EACH, +5 = 1.5 A
200 mV / div.
INPUT V: 16 TO 40 VDC,
+15 VDC
5 VDC
MAXIMUM OUTPUT POWER (W)
INPUT VOLTAGE
LOW LINE DROPOUT
MHF+28515T
MHF+28512T
11.5
11
10.5
9.5
9
8.5
10
246810 12 14 16
Fi g u r e 32
www.interpoint.com Page 17 of 23
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
MHF+ Rev L - 20091113
0.000
0.205 (5.21)
0.505 (12.83)
0.705 (17.91)
0.905 (22.99)
1.105 (28.07)
0.330 max.
(8.38)
0.000
0.25 (6.35)
0.000
0.160 (4.06)
0.960 (24.38)
1 2345
0.030 dia.
(0.76)
8 7 6
BOTTOM VIEW CASE E1
Projection Weld Squared corner and dot on top
of case indicate pin one.
1.130 max. (28.70)
1.460 max. (37.08)
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.
Seal Hole: 0.080 ±0.002 (2.03 ±0.05)
Case E1, Rev D, 20091105
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 © 1999-2009 Interpoint Corp. All rights reserved.
Fi g u r e 33: Ca S e e1— Si n g l e a n D Du a l MO D e l S
www.interpoint.com Page 18 of 23
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converter Cases
MHF+ Rev L - 20091113
0.000
0.205 (5.21)
0.505 (12.83)
0.705 (17.91)
0.905 (22.99)
1.105 (28.07)
0.000
0.160 (4.06)
0.960 (24.38)
0.030 dia.
(0.76)
1 2345
876
9
BOTTOM VIEW CASE E2
0.330 max
(8.38)
0.000
0.25 (6.35)
Projection Weld Squared corner and dot on top
of case indicate pin one.
1.130 max. (28.70)
1.460 max. (37.08)
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.
Seal Hole: 0.080 ±0.002 (2.03 ±0.05)
Case E2, Rev D, 20091105
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 © 1999-2009 Interpoint Corp. All rights reserved.
Fi g u r e 34: Ca S e e2 — tr i p l e MO D e l S
www.interpoint.com Page 19 of 23
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converter Cases
MHF+ Rev L - 20091113
1.590 (40.39)
2 x Dia 0.128 (3.25)
Flanged cases: Designator "F" required in Case Option position of model number
BOTTOM VIEW CASE G1
0.000
0.205 (5.21)
0.505 (12.83)
0.705 (17.91)
0.905 (22.99)
1.105 (28.07)
1 2345
8 7 6
0.140 (3.56)
0.560
(14.22)
Squared corner and dot on top
of case indicate pin one.
1.130 max. (28.70)
0.030 dia.
(0.76)
0.330 max.
(8.38)
0.000
0.25 (6.35)
Projection Weld
Flange thickness: 0.047 (1.19)
(2.005 max (50.93))
0.960
(24.38)
0.000
0.160
(4.06)
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.
Seal Hole: 0.080 ±0.002 (2.03 ±0.05)
Case G1, Rev C, 20091105
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 © 1999-2009 Interpoint Corp. All rights reserved.
2 x R 0.130 (3.30)
Fi g u r e 35: Ca S e g1 — Si n g l e a n D Du a l MO D e l S
www.interpoint.com Page 20 of 23
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converter Cases
MHF+ Rev L - 20091113
1.590 (40.39)
Flanged cases: Designator "F" required in Case Option position of model number
BOTTOM VIEW CASE G2
0.205 (5.21)
0.505 (12.83)
0.705 (17.91)
0.905 (22.99)
1.105 (28.07)
1 2345
9 8 67
0.140 (3.56)
Squared corner and dot on top
of case indicate pin one.
Flange thickness: 0.047 (1.19)
(2.005 max (50.93))
0.560
(14.22)
0.030 dia.
(0.76)
0.330 max.
(8.38)
0.000
0.25 (6.35)
Projection Weld
0.960
(24.38)
0.000
0.160
(4.06)
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.
Seal Hole: 0.080 ±0.002 (2.03 ±0.05)
Case G2, Rev D, 20091105
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 © 1999-2009 Interpoint Corp. All rights reserved.
0.000
2 x Dia 0.128 (3.25)
2 x R 0.130 (3.30)
1.130 max. (28.70)
Fi g u r e 36: Ca S e g2 — tr i p l e MO D e l S
www.interpoint.com Page 21 of 23
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converter Cases
MHF+ Rev L - 20091113
ST A N D A R D A N D /ES (N O N -QML) A N D /883 (CL A S S H, QML)
PR O D U C T EL E M E N T EV A L U A T I O N
COMPONENT-LEVEL TEST
PERFORMED
STANDARD AND /ES
NON-QML 1
/883
CLASS H QML
M/S 2P 3M/S 2P 3
Element Electrical (probe) yes no yes yes
Element Visual no no yes yes
Internal Visual no N/A yes N/A
Final Electrical no no yes yes
Wire Bond Evaluation 4no no yes yes
SLAM™/C-SAM:
Input capacitors only
(Add’l test, not req. by H)
no no no yes
Notes:
1. Standard and /ES, 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.
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
Sc r e e n i n g Ta b l e 1: el e m e n T ev a l u a T i o n
www.interpoint.com Page 22 of 23
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
MHF+ Rev L - 20091113
ST A N D A R D A N D /ES (N O N -QML) A N D /883 (CL A S S H, QML)
PR O D U C T EN V I R O N M E N T A L SC R E E N I N G
TEST PERFORMED 125°C STANDARD
NON-QML1
125°C /ES
NON-QML1
/883
CLASS H 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, 500 g
no
no
no
yes
yes
no
Burn-in 2
Method 1015, 125°C case, typical
96 hours
160 hours
no
no
yes
no
no
yes
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.
Notes:
1. Standard and /ES, non-QML products, do not meet all of the requirements of MIL-PRF-38534.
2. Burn-in temperature designed to bring the case temperature to +125°C
Sc r e e n i n g Ta b l e 2: en v i r o n m e n T a l Sc r e e n i n g
MHF+ Single, Dual and Triple. MHF+ Rev L - 20091113 This revision supersedes 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 © 1999 - 2009 Interpoint Corporation. All rights reserved.
www.interpoint.com Page 23 of 23
Crane Aerospace & Electronics Power Solutions
MHF+ Single, Dual and Triple DC/DC Converters
