MQHR-28-05D-Z-HB [SYNQOR]
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MQHR-28-05D
Dual Output
HigH Reliability DC-DC ConveRteR
16-40V
16-50V
±5V
5A
85% @ 2.87% @ 5A
Continuous Input
Transient Input
Output
Total Output
Effic
Full PoweR oPeRation: -55ºC to +125
@
The MilQor series of high-reliability DC-DC converters
brings SynQor’s field proven high-efficiency synchronous
rectifier technology to the Military/Aerospace industry.
TM
SynQor’s innovative QorSeal packaging approach ensures
survivability in the most hostile environments. Compatible
with the industry standard format, these converters operate
at a fixed frequency, have no opto-isolators, and fw
conservative component derating guidelines. They
designed and manufactured to comply with a wide range of
military standards.
Design Process
D
f
eManufactureD in the usa
MQHR series converters are:
•Designed for reliability per 641-A guidelies
aturor sseMbly
Q
s
eal™
hi-rel
a
•Designed with components dera
— MIL-HDBK-1547A
Features
— NAVSO P-3641A
xed swtching frequency
• pto-isolators
Qualification P
• Output over-voltage shutdown
Clock synchronization
Primary referenced enable
MQHR snverters aed to:
•MIL-STD
• Continuous short circuit and overload protection
• Input under-voltage and over-voltage shutdown
— consisteTCA/D0-160E
•SynQor’s Frst Aialificatio
— consistent with MIL-STD-88
•SynQor’s Long-Term StoragSurvivQualtion
•SynQor’s on-ging life test
Specification Compliance
In-Line ManufactuProcess
MQHR series converters (with MQHE filter) are designed to meet:
• MIL-HDBK-704-8 (A through F)
• RTCA/DO-160 Section 16, 17, 18
• MIL-STD-1275 (B, D) for VIN > 16V
• DEF-STAN 61-5 (part 6)/(5, 6) for VIN > 16V
• MIL-STD-461 (C, D, E, F)
•AS9100 and I1:200ified acility
•Full compoent trbility
•Temperatcling
•Constant accon
•24, 96, 160 hou-in
• RTCA/DO-160(E, F, G) Section 22
•Three level temperscreening
Product# MQHR-28-05D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005953 Rev. 2
08/14/13
Page 1
MQHR-28-05D
Output: ±5V
Current: 5A Total
Technical Specification
BLOCK DIAGRAM
REGULATION STAGE
ISOLATION ST
7
CURRENT
SENSE
1
POSITIVE
OUTPUT
POSITIVE
INPUT
T
T2
T1
T2
2
8
INPUT
RETURN
PUT
3
CASE
9
GATE DRIVERS
NEGATIVE
OUTPUT
UVLO
OVSD
TE DRI
CURREN
LIMI
12
4
MAGNET
NO CONNECT
11
CONTROL OWER
ENABLE 1
PRIMARY
CONTROL
OVP
SECOND
CONTRL
5
NO CONNECT
DATA OUPLIN
SYNC OUTPUT
10
TRIM
6
SYNC INPUT
POSITIVE
OUTPUT
TYPICAL CONCTIOAGRAM
1
12
N/C
11
10
9
IN RN
N/C
TRIM
3
E
+
+
+
28 Vdc
4
MQHR
EN
-VOUT
Load
Load
5
6
8
n
m
o
SYNC OUT
SYNC IN
OUT RTN
+VOUT
Product# MQHR-28-05D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005953 Rev. 2
08/14/13
Page 2
MQHR-28-05D
Output: ±5V
Current: 5A Total
Technical Specification
MQHR-28-05D ELECTRICAL CHARACTERISTICS
Parameter
Min. Typ. Max. Units Notes & Conditions
Group A
Vin=28V dc ±5%, Iout=5A, CL=0µF, free running (see Note 9)
unless otherwise specified
Subgroup
(see Note 14)
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
60
60
-0.8
-1.2
V
V
V
V
Operating
See Note 1
Reverse Bias (Tcase = 125ºC)
Reverse Bias (Tcase = -55ºC)
Isolation Voltage (I/O to case, I to O)
Continuous
-500
-800
-55
500
800
125
135
300
50
V
V
°C
°C
°C
V
Transient (≤100µs)
Operating Case Temperature
Storage Case Temperature
Lead Temperature (20s)
HB Grade Producotes 15
-65
Voltage at ENA1
-1.2
INPUT CHARACTERISTICS
Operating Input Voltage Range
“
16
16
28
28
40
50
V
V
Contious
Trans1s
See N
1,
4, 5, 6
Input Under-Voltage Shutdown
Turn-On Voltage Threshold
Turn-Off Voltage Threshold
Lockout Voltage Hysteresis
Input Over-Voltage Shutdown
Turn-Off Voltage Threshold
Turn-On Voltage Threshold
Shutdown Voltage Hysteresis
Maximum Input Current
14.75 15.50 16.00
14.00 14.75 15.50
0.65
V
V
V
2, 3
, 2, 3
1, 2, 3
0.80
1.05
See Note 3
52.0
50.5
1.0
55.0
53.5
2.0
58.0
56
3.0
2
100
15
V
A
mA
mA
mA
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
Vin = 1+Iout = -I= 2.5A
No Load Input Current (operating)
Disabled Input Current
75
Vin = 16V, 28V, 5; E
Bwidth = 100kz – 10ee Figure 14
Input Terminal Current Ripple (pk-pk)
OUTPUT CHARACTERISTICS
Output Voltage Set Point (Tcase = 25ºC)
Positive Ouput
See Note
See Note 14
95
5.00
5.0
1
1
Negative Output
-05 -5.00 -495
Output Voltage Set Point Over Temperature
Negative Output
-5.0-5.00 -.92
V
V
m
m
V
mV
mV
A
A
mA
µ
2, 3
2, 3
Positive Ouput
4.92
4
75
5.00
0
0
00
0
15
5
20
15
5.10
500
6
4
25
7.8
Positive Output Voltage Line Regulation
Positive Output Voltage Load Regulation
Total Positive Output Voltage Range
Output Voltage Cross Regulati
Output Voltage Ripple and Noise Pk
Operating Output Current ge
Single Output OperatinRange
Operating Output Power R
Output DC Current-Limit Ince
Back-Drive Currnt Limit while E
Back-Drive Cimit while Dis
Maximum Ouance
DYNAMIC CHAICS
Output Voltage Deviansient
For a Pos. Step ChangCurrent
For a Neg. Step hage in ad Curren
Output Voltage Devition Line Transient
For a Pos. Step Chnge in Line Volte
For a Neg. Step Chae in Line Voltage
Turn-On Transient
See Note 14; Vin = 16V, 8V, 40V
See Note 14; +Vout @+Iout=-Iout=0A) - +Vout @(+Iout=-Iout=2.5A)
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
See Note 5
ee Note 14
otes 13 and 1-Vout @(+Iout=-Iout=1A) - -Vout @(+Iout=4A, -Iout=1A)
idth = 1MHz; CL=11µF on both outputs
(+ (-Iout)
MaxiIout or -Iout
Total on both outputs
e Note 4; +Iout + -Iout; +Iout = -Iout
0
0
0
5.5
50
00
Total on both outputs
See Note 6
Total Iout step = 2.5A to 5A, 0.5A to 2.5A; CL=11µF on both outputs
-300
-200
mV
mV
4, 5, 6
4, 5, 6
300
“
Vin step = 16V to 50V; CL=11µF on both outputs; see Note 7
-
100
100
mV
mV
4, 5, 6
4, 5, 6
Output Voltage Rise Time
0
5.5
3.0
180
20
10
2
8.0
6.0
250
25
ms
%
ms
ms
ms
ms
+Vout = 0.5V to 4.5V; Full Resistive Load
Resistive load
ENA = 5V; see Notes 8 & 10
See Note 10
See Note 10
4, 5, 6
See Note 5
4, 5, 6
4, 5, 6
4, 5, 6
4
Output Voltage Overshoot
Turn-On Delay, Rising Vin
Turn-On Delay, Rising ENA
Restart Inhibit Tim
Short Circuit Stat Time
15
Product# MQHR-28-05D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005953 Rev. 2
08/14/13
Page 3
MQHR-28-05D
Output: ±5V
Current: 5A Total
Technical Specification
MQHR-28-05D ELECTRICAL CHARACTERISTICS (Continued)
Parameter
Min. Typ. Max. Units Notes & Conditions
Group A
Vin=28V dc ±5%, Iout=5A, CL=0µF, free running (see Note 9)
unless otherwise specified
Subgroup
(see Note 11)
EFFICIENCY
Iout = 5 A (16 Vin)
Iout = 2.5 A (16 Vin)
Iout = 5 A (28 Vin)
Iout = 2.5 A (28 Vin)
Iout = 5 A (40 Vin)
Iout = 2.5 A (40 Vin)
Iout = 5 A (50 Vin)
Load Fault Power Dissipation
ISOLATION CHARACTERISTICS
Isolation Voltage
TBD
TBD
TBD
TBD
TBD
TBD
TBD
89
88
87
85
84
83
84
TBD
%
%
%
%
%
%
%
W
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
Sustained short coutput
Dielectric strgth
Input RTN to Output RTN
Any Input Pin to Case
Any Output Pin to Case
Isolation Resistance (in rtn to out rtn)
Isolation Resistance (any pin to case)
Isolation Capacitance (in rtn to out rtn)
FEATURE CHARACTERISTICS
Switching Frequency (free running)
Synchronization Input
Frequency Range
500
500
500
100
100
V
V
V
MΩ
MΩ
nF
1
1
1
1
1
22
500
550
6
1, 2, 3
500
2.0
-0.5
20
700
5.5
0.8
kHz
V
V
1, 2, 3
1, 2, 3
1, 2, 3
Logic Level High
Logic Level Low
Duty Cycle
%
See Note 5
Synchronization Output
Pull Down Current
Duty Cycle
20
40
%
VSYN0.8V
Output coo SYNC IN of other MQHR unit
See Note 5
See Note 5
60
Enable Control (ENA)
Off-State Voltage
Module Off Pulldown Current
On-State Voltage
V
µ
1, 2, 3
See Note 5
1, 2, 3
0
Current drain equired ensure module is off
Module On Pin Leakage Current
Pull-Up Voltage
Output Voltage Trim Range
RELIABILITY CHARATICS
Calculated MTBF (MIL-ST
GB @ Tcase = 70ºC
20
4.8
V
V
Imax draw from allowed with module still on
ee Figure A
ut) - 5Vsee Figure E
See Note 5
1, 2, 3
3.2
-0.4
.0
40
1
103
AIF @ Tcase = 70ºC
WEIGHT CHERISTICS
Device Weight
45
Electrical Charcteris
1. Converter will uderginper-voltage own.
2. Derate output poer to 50% of rated powase = 135ºC is above the specified operating range. See Figure 11.
3. High or low state oinput voltage mst persiout 20o be acted on by the shutdown circuitry.
4. Current limit inceptis defined as te point woutpoltage has dropped to 90% of its nominal value.
5. Parameter not testebut guaranteed to the limit s.
6. Load current transition time 0µs.
7. Line voltage transition time µs.
8. Input voltage rise time ≤ 250
9. Operating the converter at a syation frequency above the free running frequency will cause the converter’s efficiency to be slightly
reduced and it may use a sduction in the maximum output current/power available. For more information consult the factory.
10. After a disable or faul, modubited from restarting for 100ms. See Shut Down section of the Control Features description.
11. Only the ES aB graducts ared at three temperatures. The C grade products are tested at one temperature. Please refer to the
Construction vironntal Stress Screening Options table for details.
12. These derating pply for the ES and HB grade products. The C grade product has a maximum case temperature of 70ºC.
13. The regulation staates to control the positive output. The negative output displays the cross regulation.
14. All +Vout and -Vout vmeasurements are made with Kelvin probes on the output leads.
15. The specified operating perature for ES grade products is -45ºC to 100ºC. The specified operating case temperature for C grade products
is 0ºC to 70ºC.
Product# MQHR-28-05D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005953 Rev. 2
08/14/13
Page 4
MQHR-28-05D
Output: ±5V
Current: 5A Total
Application Section
output over-voltage limit. There is also an output current
limit that is nearly constant as the load impedance decreases
(i.e., there is not fold-back or fold-forward characteristic to
the output current under this condiWhen a load fault
is removed, the output volriseentially to its
nominal value without an ov. If a fault pulls the
output voltage below about 60ominthe converter
will shut down to atempt to cleoad fault. After a
short delay it will to auto-restart.
BASIC OPERATION AND FEATURES
The MQHR DC/DC converter uses a two-stage power
conversion topology. The first, or regulation, stage is a
buck-converter that keeps the output voltage constant over
variations in line, load, and temperature. The second, or
isolation, stage uses transformers to provide the functions of
input/output isolation and voltage transformation to achieve
the output voltage required.
The MQHR conventrol circit does not implement an
over-tempeture sn.
In the dual output converter there are two secondary
windings in the transformer of the isolation stage, one for
each output. There is only one regulation stage, however,
and it is used to control the positive output. The negative
output therefore displays “Cross-Regulation”, meaning that
its output voltage depends on how much current is drawn
from each output.
The following sections e the use and ope
additial control features vided by the MQHR converter.
CONL FEATURES
Both the positive and the negative outputs share a common
5V
OUTPUT RETURN pin.
82.5K
Both the regulation and the isolation stages switch at a fixed
frequency for predictable EMI performance. The isolation
stage switches at one half the frequency of regulation
stage, but due to the push-pull nature of this seates
a ripple at double its switching frequency. As a re
the input and the output of the convertr have a funda
ripple frequency of about 550 kHz in the free-running mod
10K
ENA1
TO ENABLE
PIN4
CIRCUITRY
IN RTN
PIN2
Rectification of the isolation sta’s output is accomplished
with synchronous rectifiers. devices, whh are
MOSFETs with a very low resistancfar less energy
than would Schottky diodes. This is the y reason why
the MQHR converters hahigh efficiency, particarly
at low output voltas.
FigurA: Circut diagraown for reference only, actual circuit
components may dffer from values shown for equivalent circuit.
ABLE: Te MQHR converter has one enable pin, ENA1
(, which is referenced with respect to the converter’s
inprn (pin 2). It must have a logic high level for the
converter to be enabled; a logic low inhibits the converter.
Besides improving ncy, synchronous rectifi
permit operation dowero lod currentThere is no
longer a nd for a minimd, as is typiconverters
that use or rectifica. The synchronctifiers
actually pertive load currenow bathe
converter’s outpuls if the load source ort
or long term energy. he MQHR erteroy a “ck-
drive current imit” to keep this ve outerminal
current small.
enable pin is internally pulled high so that an open
cnection will enable the converter. Figure A shows the
equivalent circuit looking into the enable pin. It is TTL
compatible and has hysteresis.
SHUT DOWN: The MQHR converter will shut down in
response to only five conditions: ENA input low, VIN input
below under-voltage shutdown threshold, VIN input above
over-voltage shutdown threshold, output voltage below the
output under-voltage threshold, and output voltage above
the output over-voltage threshold. Following any shutdown
event, there is a startup inhibit delay which will prevent the
converter from restarting for approximately 100ms. After
the 100ms delay elapses, if the enable inputs are high and
the input voltage is within the operating range, the converter
There is a control ciuit in the MQHnverter that
determines the conn state of the wer switches.
It communicates acrosisolation barrier through a
magnetically codevicopto-solators are used.
An input unr-voltshutdoature with hysteresis is
provided, aas ainput over-voltage shutdown and an
Product# MQHR-28-05D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005953 Rev. 2
08/14/13
Page 5
MQHR-28-05D
Output: ±5V
Current: 5A Total
Application Section
will restart. If the VIN input is brought down to nearly 0V OUTPUT VOLTAGE TRIM: If desired, it is possible to
and back into the operating range, there is no startup inhibit, increase or decrease the MQHR dual converter’s output
and the output voltage will rise according to the “Turn-On voltage from its nominal value. To increase the output voltage
Delay, Rising Vin” specification.
a resistor, Rtrim up, should be connetween TRIM pin
(pin 10) and the OUTPUT RERN pin , as shown in
Figure D. The value of this r shodetermined
according to the followig equafrom ure E:
SYNCHRONIZATION: The MQHR converter’s switching
frequency can be synchronized to an external frequency
source that is in the 500 kHz to 700 kHz range. A pulse
train at the desired frequency should be applied to the SYNC
IN pin (pin 6) with respect to the INPUT RETURN (pin 2).
This pulse train should have a duty cycle in the 20% to 80%
range. Its low value should be below 0.8V to be guaranteed
to be interpreted as a logic low, and its high value should
be above 2.0V to be guaranteed to be interpreted as a logic
high. The transition time between the two states should be
less than 300ns.
Rtrim up(Ω) = 6000Ω*Vnom
- 300
t - Vnm
where:
Vnom the cos noinal out
out = the desiret voltage (greater th
Vnom), and
up is in Oms.
the ooltage s trimmed t proda greater
voltage strthe conerter’rnal cponents
nd may cause the cor to o diver the
utput voltage at ow enthe input
volte at the higher enhe load current and
temperature rangease consulactory for details.
To trim the outpt vobelow its ninal value, connect
an ternal resistobetwhe TRIM pin and the POSITIVE
OUTPUT pn (pin 7), as sin Figure D. The value of
this trim resistor shoule chosen according to the
following equr from Figure E:
If the MQHR converter is not to be synchronized, the SYNC
IN pin should be left open circuit. The converter will
then operate in its free-running mode at a frequenc
approximately 550 kHz.
If, due to a fault, the SYNC IN pin is held in either a logic low
or logic high state continuously, or the SYNC frequency
is outside the 500-700 kHz range, the MQHR r will
revert to its free-running frequency.
The MQHR converter also has a SYNC UT pin (pn 5). T
output can be used to drive the SYNC IN pins of as many as
ten (10) other MQHR converters. he pulse train coming out
of SYNC OUT has a duty cycland a frequeny that
matches the switching frequency oerter with which
it is associated. This frequency is eitfree-running
frequency if there is no nchronizatiosignal athe
SYNC IN pin, or the nchrofrequency if the
Rtrim down(Ω) = 15100Ω*Vout - 6000Ω*Vnom
- 30000Ω
Vnom - Vout
wher
The synchronizatiore is ely compatible with th
of SynQor’s MQFL famonverrs.
Vnom = the converter’s nominal output voltage,
Vout = the desired output voltage (less than Vnom),
and
Figure B the equivacuit looking he SYNC
IN pin and shows thequivalent circuit lg into
the SYNC OUT
Rtrim down is in Ohms.
Factory trimmed converters are available by request.
5V
5K
5K
SYNC OUT
FROM SYNC
CIRCUITRY
TO SYNC
CIRCUITRY
PIN 6
PIN 5
PIN 2
SYNC I
5K
IN RTN
PIN 2
OPEN COLLECTOR
OUTPUT
Figure B: Equiircit looking into the SYNC IN pin with
respect to the IN Rut return) pin.
Figure C: Equivalent circuit looking into SYNC OUT pin with
respect to the IN RTN (input return) pin.
Product# MQHR-28-05D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005953 Rev. 2
08/14/13
Page 6
MQHR-28-05D
Output: ±5V
Current: 5A Total
Application Section
INPUT UNDER-VOLTAGE SHUTDOWN: The MQHR
converter has an under-voltage shutdown feature that
ensures the converter will be off if the input voltage is too
low. The input voltage turn-on threshold is higher than
the turn-off threshold. In addition, the MQHR converter
will not respond to a state of the input voltage unless it
has remained in that state for more than about 200µs. This
hysteresis and the delay ensure proper operation when the
source impedance is high or in a noisy environment.
10000
1000
100
Trim Up
Trim Down
INPUT OVER-VOLTAGE SHUTDOWN: The MQHR
converter also has an over-voltage feature that ensures the
converter will be off if the input voltage is too high. It also
has a hysteresis and time delay to ensure proper operation.
-8%
-6%
%
-2%
0%
2%
6%
8%
10%
OUTPUT OVER-VOLTAGE SHUTDOWN: The MQHR
converter will shut down if the voltage at its power output
pins ever exceeds about 130% of the nominal value. The
shutdown threshold does not change with output trim or
sense drops; excessive trim-up or output wiring drops
cause an output over-voltage shutdown event. After
startup inhibit delay, the converter will attempt to restart.
Output Voltage ustment
Figure E: Trim rim down functiernal trresistance.
IVE CURRENT L: Convrs that use
MOSsynchronous rectifie capable of drawing
a negative current the load if ad is a source of
short- or long-tem eThis negae current is referred
to a “back-drive curr
OUTPUT UNDER-VOLTAGE SHUTDOWNhe MQHR
converter will also shut down if the voltagower
output pins ever dips below 60% of the nominal r
more than a few milliseconds. Output voltage red
due to output current overload (current limit) is the mo
common trigger for this shutdow. The hutdown threshold
does not change with output but at only 10%trim-
down should not trigger this er a startup inhibit
delay, the converter will attempt to his shutdown
is disabled during startu
Conditionere back-drivrent might occur include
paralleled ers that do not employ current sharing.
It can also occn converters having different output
voges are connogether through either explicit or
parasitic diodes that, while normally off, become conductive
uring startup oshutdown. Finally, some loads, such as
ors, can retun energy to their power rail. Even a load
tor is a ource of back-drive energy for some period of
timng a shutdown transient.
1
12
+VIN
N/C
2
11
TN
N/C
10
TRIM
+
CAE
+
R
trim up/ Rtrim sense
28 Vdc
9
8
7
MQHR
A 1
-VOUT
OUT RTN
+VOUT
Load
R
trim down
5
open
eans
SOUT
SYNC IN
+
6
Load
Figure D: Typical con for output voltage trimming.
Product# MQHR-28-05D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005953 Rev. 2
08/14/13
Page 7
MQHR-28-05D
Output: ±5V
Current: 5A Total
Application Section
To avoid any problems that might arise due to back-drive When the converter is mounted on a metal plate, the plate
current, the MQHR converters limit the negative current will help to make the converter’s case bottom a uniform
that the converter can draw from its output terminals. The temperature. How well it does so ends on the thickness
threshold for this back-drive current limit is placed sufficiently of the plate and on the thermal cone of the interface
below zero so that the converter may operate properly layer (e.g. thermal greaseermal etc.) between
down to zero load, but its absolute value (see the Electrical the case and the plate. Uhis is very well, it
Characteristics page) is small compared to the converter’s is important not to miake the temrature for the
rated output current.
maximumcasetemperature. Itisehemtobeasmuch
as 5-10ºC differeat full power and igh tempratures.
It is suggested hercouple battached directly to
the converter’s casgh a smhole in tplate when
investigatinow hot nverer is getust
also be made to ensure here is not a large
resistae between the thmocouple nd the case due to
whatedhesive miht be used to holhermocouple
plac
CURRENT LIMIT: In the event of excess load, the MQHR
converter will quickly reduce its output voltage to keep
the load current within safe limits (see Figure 12). If the
overload persists for more than 14 milliseconds, the converter
will shut off, wait a restart delay, and then automatically
attempt to re-start. The timeout is internally implemented
with an integrator: counting up whenever current limit is
active, and counting down at 1/5th the rate whenever current
limit becomes inactive. In this way a series of short-duration INPUT SYNSTABILTY: onditioan occur
overloads will not cause the converter to shut down, whbecause any dc-dc conveppeaemenally as a
will shut down in response to sustained overloads.
resistance load. A d appln note titled
“Inm Instability” s avaion the SynQor website
which provides aderstanding hy this instability
arises, and shows therred solutifor correcting it.
THERMAL CONSIDERATIONS: Figure 11 shows the
suggested Power Derating Curves for this onverter as
a function of the case temperature and aximum
desired power MOSFET junction temperatureher
components within the converter are cooler than its
MOSFET, which at full power is no re than 20ºC ig
than the case temperature directly elow this MOSFE.
The Mil-HDBK-1547A componing guideline lls for
a maximum component temper05ºC. Figure 11
therefore has one power derating curvsures this limit
is maintained. It has beor’s extensiperience that
reliable long-term cnvertetion can be achievith
a maximum comteme of 125ºC. In ex
cases, a maximum tture oºC is permissible, but
recommended for longperatn where hh reliability is
required. rating curveese higher tture limits
are also in Figure 1e maximum casperature
at which the r should e operate135ºC
Product# MQHR-28-05D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005953 Rev. 2
08/14/13
Page 8
MQHR-28-05D
Output: ±5V
Current: 5A Total
Stress Screening
CONSTRUCTION AND ENVIRONMENTAL STRESS SCREENING OPTIONS
C-Grade
ES-Grade
HB-Grade
Consistent with
MIL-STD-883F
Screening
specified from
specified from
(
0spºeCcitfioe+d7f0roºmC ) (-45 ºC to 0 ºC) ºC to +125 ºC
)
Element Evaluation
No
Yes
Yes
Yes
Internal Visual
Temperature Cycle
Constant Acceleration
*
Yes
Condition B
(-5ºC to +125 º
ndition C
(o +150 C)
Method 1010
Method 2001
(Y1 Direction)
ondition A
5000g)
50
Burn-in
Method 1015
2rs @ +125 ºC
96 125 ºC
160 Hrs @ +125 ºC
Final Electrical Test
Metho5005 (GrouA)
+25 ºC
QorSeal
*
25, +100 ºC
Full QorSeal
Yes
-55, +25, +125 ºC
Full QorSeal
Yes
Mechanical Seal,
Thermal, and
Coating Prs
ternal Visual
Constrction Proess
QorSeal
QorSeal
QorSeal
* Per IPC-A-610 Class 3
MilQor conved filtee offered in three variations of environmental stress screening options. All MilQor converters use SynQor’s proprietary
QorSeal™ Hi-Rebly ocess that includes a Parylene-C coating of the circuit, a high performance thermal compound filler, and a nickel barrier
gold plated alumin. Each successively higher grade has more stringent mechanical and electrical testing, as well as a longer burn-in cycle. The ES-
and HB-Grades are alsructed of components that have been procured through an element evaluation process that pre-qualifies each new batch of
devices.
Product# MQHR-28-05D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005953 Rev. 2
08/14/13
Page 9
MQHR-28-05D
Output: ±5V
Current: 5A Total
Mechanical Diagrams
MQHR-28-05D-U-ES
DC-DC ConvERtER
16-40viꢀ ±5vꢁuꢂ @ 5A
PIN DIGNATINS
Pin Functi
1
2
3
Positive
Input return
4
Ena
5
6
Sync o
c inpu
7
10
11
12
e ouput
Output return
Negative output
m
No connection
No connection
NOTES
1)
Case: Aluminum with gold over
nickel plate finish for the C,
ES, and HB Grade products.
2)
Pins: Diameter: 0.040’’ (1.02mm)
Material: Copper
MQHR-28-05
-DC ConvERtER
±5vꢁuꢂ @ 5A
Finish: Copper alloy with Gold
over Nickel plating, followed
by Sn/Pb solder dip
3)
4)
All dimensions in inches (mm)
Tolerances: a) x.xx +/-0.02 in.
(x.x +/-0.5mm)
b) x.xxx +/-0.010 in.
(x.xx +/-0.25mm)
5)
6)
Weight: 1.6 oz (45.4 g) typical
Workmanship: Meets or exceeds
IPC-A-610 Class III
7)
8)
Pin 1 identification hole, not intended
for mounting
Baseplate flatness tolerance is 0.004”
(.10mm) TIR for surface
Case W
Product# MQHR-28-05D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005953 Rev. 2
08/14/13
Page 10
MQHR-28-05D
Output: ±5V
Current: 5A Total
Mechanical Diagrams
MQHR-28-05D-X-ES
DC-DC ConvERtER
16-40viꢀ ±5vꢁuꢂ @ 5A
PIN DIGNATINS
Pin Functin
1
2
3
Positiv
Input return
4
Ena
5
6
Sync o
c inpu
7
10
11
12
e ouput
Outpreturn
Negative output
No connection
No connection
NOTES
1)
Case: Aluminum with gold over
nickel plate finish for the C,
ES, and HB Grade products.
2)
Pins: Diameter: 0.040’’ (1.02mm)
Material: Copper
Finish: Copper alloy with Gold
over Nickel plating, followed
MQHR-28-05
ConvERtER
vꢁuꢂ @ 5A
by Sn/Pb solder dip
3)
4)
All dimensions in inches (mm)
Tolerances: a) x.xx +/-0.02 in.
(x.x +/-0.5mm)
b) x.xxx +/-0.010 in.
(x.xx +/-0.25mm)
5)
6)
Weight: 1.6 oz (45.4 g) typical
Workmanship: Meets or exceeds
IPC-A-610 Class III
7)
8)
Pin 1 identification hole, not intended
for mounting
Baseplate flatness tolerance is 0.004”
(.10mm) TIR for surface
Case Y
Product# MQHR-28-05D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005953 Rev. 2
08/14/13
Page 11
MQHR-28-05D
Output: ±5V
Current: 5A Total
Mechanical Diagrams
PIN SIGNATONS
MQHR-28-05D-Z-ES
DC-DC ConvERtER
16-40viꢀ ±5vꢁuꢂ @ 5A
Pi# Function
1
2
3
Post
Input return
e
4
E
6
Sync ut
ync inp
7
10
11
12
ive otput
Outreturn
Negative output
m
No connection
No connection
NOTES
1)
Case: Aluminum with gold over
nickel plate finish for the C,
ES, and HB Grade products.
2)
Pins: Diameter: 0.040’’ (1.02mm)
Material: Copper
Finish: Copper alloy with Gold
over Nickel plating, followed
by Sn/Pb solder dip
3)
4)
All dimensions in inches (mm)
Tolerances: a) x.xx +/-0.02 in.
(x.x +/-0.5mm)
b) x.xxx +/-0.010 in.
(x.xx +/-0.25mm)
5)
6)
Weight: 1.6 oz (45.4 g) typical
Workmanship: Meets or exceeds
IPC-A-610 Class III
7)
8)
Pin 1 identification hole, not intended
for mounting
Baseplate flatness tolerance is 0.004”
(.10mm) TIR for surface
Product# MQHR-28-05D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005953 Rev. 2
08/14/13
Page 12
MQHR-28-05D
Output: ±5V
Current: 5A Total
Ordering Information
MilQor Converter FAMILY MATRIX
The tables below show the array of MilQor converters available. When ordering SynQor conveplease ensure that
you use the complete part number according to the table in the last page. Contact the facory foequirements.
Single Output
Duautput †
1.5V
1.8V
2.5V
3.3V
5V
6V
7.5V
9V
12V
15V
28V
12V
15V
Full Size
MQFL-28
(1R5S) (1R8S) (2R5S) (3R3S)
(05S)
(06S)
(7R5S)
(09S)
(12S)
(15S)
(28S)
(12D)
(15D)
16-40Vin Cont.
24A
Total
10A
8
Total
40A
40A
40A
40A
40A
40A
40A
40A
40A
40A
40A
40A
40A
40A
40A
30A
30A
30A
30A
30A
24A
24A
20A
20A
24A
20A
20A
7A
17A
16A
16A
13A
13A
16A
13A
A
11A
11A
13
10A
10A
8A
4A
4A
16-50Vin 1s Trans.*
Absolute Max Vin = 60V
MQFL-28E
16-70Vin Cont.
To
10A
otal
8A
Total
16-80Vin 1s Trans.*
Absolute Max Vin =100V
MQFL-28V
16-40Vin Cont.
6.5A
A
8A
A
3.3A
5.5-50Vin 1s Trans.*
Absolute Max Vin = 60V
MQFL-28VE
16-70Vin Cont.
8A
5.5-80Vin 1s Trans.*
Absolute Max Vin = 100V
MQFL-270
155-400Vin Cont.
24A
Total
10A
Total
8A
Total
10A
155-475Vin 1s Trans.*
Absolute Max Vin = 550V
MQFL-270L
15A
Total
6A
Total
5A
Total
65-350Vin Cont.
40A
22A
15A
12A
10A
8A
6A
2.7A
65-475Vin 1s Trans.*
Absolute Max Vin = 550V
Single Ou
Dual Output †
1.5V
2.5V
3.3V
5V
6V
9V
12V
15V
28V
5V
12V
15V
Half Size
R5S) 2R5S) (3R3S)
(05S)
(7R
S)
(12S)
(15S)
(28S)
(05D)
(12D)
(15D)
MQHL-28
16-40Vin Cont.
10A
Total
4A
Total
3.3A
Total
A
10A
20A
20A
0A
20A
2
1
15A
A
5A
10A
1
8A
8A
4A
A
6.6A
3.3A
5.5A
5.5A
4A
4A
2A
3.3A
3.3A
1.8A
1.8A
0.9A
16-50Vin 1s Trans.*
Absolute M60V
MQHL
16-70Vin Cont.
10A
Total
4A
Total
3.3A
Total
16-80Vin 1s Tns.*
Absolute Max Vi=100V
MQHR-28
16-40Vin Cont.
5A
Total
2A
Total
1.65A
Total
2.75A
1.65A
16-50Vin 1s Trans.*
Absolute Max Vin = 60V
MQHR-28E
16-70Vin Cont.
5A
Total
2A
Total
1.65A
Total
10A
A
10A
7.5A
5A
4A
3.3A
2.75A
2A
1.65A
0.9A
16-80Vin 1s Trans.*
Absolute Max Vin = 100V
Check with factvailability.
†80% of total outpnt available on any one output.
*Converters may be oat the highest transient input voltage, but some component electrical and thermal stresses would be beyond MIL-
HDBK-1547A guidelines.
Product# MQHR-28-05D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005953 Rev. 2
08/14/13
Page 13
MQHR-28-05D
Output: ±5V
Current: 5A Total
Ordering Information
PART NUMBERING SYSTEM
The part numbering system for SynQor’s MilQor DC-DC converters follows the format shown in the e below.
Not all combinations make valid part numbers, please contact SynQor for availability. See the Product Sumweb pore options.
Example: MQHR-28-05D-Y-ES
Output Voltage(s)
Input
Model
Name
Package Out
Pin Config
Scrg
Gre
Voltage
Range
Single
Output
Dual
Output
1R5S
1R8S
2R5S
3R3S
05S
06S
7R5S
09S
28
28E
28V
28VE
W
Z
MQFL
MQHL
MQHR
05D
12D
1
H
270
270L
12S
15S
28S
APPLICATION NOTES
A variety of application notes and technie papers can bwnloaded in pformat from the SynQor website.
PATENTS
SynQor holds the followiatents, or more of which apply to roduct listed in this document. Additional patent applications may be
pending or filed in the futu
5,999,4
6,894,468
5,687
6,222,742
6,896,52
7,269,034
1
6,
6,927,9
,272,021
890
6,57709
7,050,3
2,023
149,597
6,594,159
7,072,190
7,558,083
6,731,520
7,085,146
7,564,702
Contact SynQor for furer information aorder:
Warranty
SynQor offers a two (2) year limited warranty. Complete warranty informa-
tion is listed on our website or is available upon request from SynQor.
Phone:
Toll Free: 1-567-996
-849-0600
Fax:
ail:
W
978-0602
mqnbofae@synqor.com
www.synqor.com
Information furnished by SynQor is believed to be accurate and reliable.
However, no responsibility is assumed by SynQor for its use, nor for any
infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any
patent or patent rights of SynQor.
Addr155 Swanson Road
oxborough, MA 01719
USA
Product# MQHR-28-05D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005953 Rev. 2
08/14/13
Page 14
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