MQHR-28-3R3S-X-HB [SYNQOR]
DC-DC Regulated Power Supply Module, 1 Output, 24.75W, Hybrid, MODULE-12;
| 型号： | MQHR-28-3R3S-X-HB |
| 厂家： | 
SYNQOR WORLDWIDE HEADQUARTERS |
| 描述： | DC-DC Regulated Power Supply Module, 1 Output, 24.75W, Hybrid, MODULE-12 |
| 文件： | 总15页 (文件大小：7871K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MQHR-28-3R3S
Single Output
HigH Reliability DC-DC ConveRteR
16-40V
16-50V
3.3V
7.5A
87% @ 3.788% @ 7.5A
Continuous Input
Transient Input
Output
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
Remote sense
Clock synchronization
• Primary referenced enable
MQHR snverters aed to:
•MIL-STD
— consisteTCA/D0-160E
•SynQor’s Frst Aialificatio
— consistent with MIL-STD-88
•SynQor’s Long-Term StoragSurvivQualtion
•SynQor’s on-ging life test
• Continuous short circuit and overload protection
• Input under-voltage and over-voltage shutdown
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-28-3R3S
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005355 Rev. 3
08/13/13
Page 1
MQHR-28-3R3S
Output: 3.3V
Current: 7.5A
Technical Specification
BLOCK DIAGRAM
REGULATION STAGE
ISOLATION STAGE
7
CURRENT
SENSE
1
POSITIVE
POSITIVE
INPUT
OUTPUT
T1
T2
T1
T
2
8
INPUT
RETURN
OUPUT
RETUN
3
CASE
GATE DRIVERS
TE CONTRO
12
UVLO
OVSD
CURRENT
LIMIT
NO COECT
11
4
RIM
ENABLE 1
PRIMARY
CONTROL
CONTRO
ONDAR
ROL
10
5
MAGNETIC
FEE
+ SENSE
SYNC OUT
9
6
−
SENSE
SYNC IN
TYPICAL CONCTIOAGRAM
2
12
+VIN
N/C
11
10
9
TN
CAE
TRIM
+SNS
-SNS
+
+
28 Vdc
MQHR
4
ENA 1
Load
5
6
8
en
m
on
SYNC OUT
SYNC IN
OUT RTN
+VOUT
7
Product# MQHR-28-3R3S
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005355 Rev. 3
08/13/13
Page 2
MQHR-28-3R3S
Output: 3.3V
Current: 7.5A
Technical Specification
MQHR-28-3R3S ELECTRICAL CHARACTERISTICS
Parameter
Min. Typ. Max. Units Notes & Conditions
Group A
Vin=28V dc ±5%, Iout=7.5A, CL=0µF, free running
(see Note 9) unless otherwise specified
Subgroup
(see Note 11)
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 Productotes 13
-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
Shutdown 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
0.85
1.05
See Note 3
52.0
50.5
1.0
55.0
54.0
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 = out = 7.5A
No Load Input Current (operating)
Disabled Input Current
75
Vin = 16V, 28V, 5V; E
width = 100kz – 1ee Figure 14
Input Terminal Current Ripple (pk-pk)
OUTPUT CHARACTERISTICS
Output Voltage Set Point (Tcase = 25ºC)
Output Voltage Set Point Over Temperature
Output Voltage Line Regulation
Output Voltage Load Regulation
Total Output Voltage Range
Output Over-Voltage Shutdown
Output Voltage Ripple and Noise Peak t
Operating Output Current Range
Operating Output Power Range
Output DC Current-Limit Incep
Back-Drive Current Limit while Ena
Back-Drive Current Limit Disabl
Maximum Output Capa
DYNAMIC CHARACTER
Output Voltage Deviation Lont
For a Pos. Step Change in Lot
For a Neg. hange in Load
Output VoltaLine Transi
For a Pos. SteLine Volte
For a Neg. Step ChVoltage
Turn-On Transien
3.27
25
20
3.30
3.30
0
3.3
2
V
mV
V
V
mV
A
W
A
A
Vout at see leads
1
“
2, 3
“ ; Vin = , 40V; Iout=7.A
“ ; Vout @ (- Vout @ (Iout=7.5A)
“
1, 2, 3
1, 2, 3
1, 2, 3
See Note 5
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
See Note 5
-1
0
15
3.23
3.7
3.30
4.3
15
.37
75
Bandwidth = 10MHz; CL1µF
8
7.5
25
2.5
10
11.1
Note 4
2,500
mA
ee Note 6
-250
mV
mV
Iout step = 3.75A to 7.5A, 0.75A to 3.75A; CL=11µF
4, 5, 6
4, 5, 6
250
“
Vin step = 16V to 50V; CL=11µF; see Note 7
-
-1
m
mV
4, 5, 6
4, 5, 6
Output Voltage ise ime
Output Voltage Oershoot
Turn-On Delay, Risg Vin
5.5
3.0
0
10
2
8.0
6.0
150
20
ms
%
ms
ms
ms
ms
Vout = 0.33V to 2.97V; 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
Turn-On Delay, RisinENA
Restart Inhibit Time
Short Circuit Start Time
12
EFFICIENCY
Iout = 7.5 A (16 Vin)
86
85
85
84
84
83
83
89
88
88
87
87
85
86
2.5
%
%
%
%
%
%
%
W
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
Iout = 3.75 A (16 Vin)
Iout = 7.5 A (28 Vin)
Iout = 3.75 A (28 Vin)
Iout = 7.5 A (40
Iout = 3.75 A (4
Iout = 7.5 A (50 Vin
Load Fault Power Dissi
Sustained short circuit on output
Product# MQHR-28-3R3S
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005355 Rev. 3
08/13/13
Page 3
MQHR-28-3R3S
Output: 3.3V
Current: 7.5A
Technical Specification
MQHR-28-3R3S ELECTRICAL CHARACTERISTICS (Continued)
Parameter
Min. Typ. Max. Units Notes & Conditions
Group A
Vin=28V dc ±5%, Iout=7.5A, CL=0µF, free running
(see Note 9) unless otherwise specified
Subgroup
(see Note 11)
ISOLATION CHARACTERISTICS
Isolation Voltage
Dielectric strength
Input RTN to Output RTN
Any Input Pin to Case
500
500
500
100
100
V
V
V
MΩ
MΩ
nF
1
1
1
1
1
1
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
22
500
550
600
kHz
1, 2, 3
Frequency Range
Logic Level High
Logic Level Low
Duty Cycle
500
2.0
-0.5
20
700
5.5
0.8
80
kHz
V
V
1, 2, 3
1, 2, 3
%
SNote 5
Synchronization Output
Pull Down Current
Duty Cycle
20
40
mA
SYNC O
Output connected to SYNC Iher MQ
See Note 5
See Note 5
60
Enable Control (ENA)
Off-State Voltage
Module Off Pulldown Current
On-State Voltage
0.8
µA
V
1, 2, 3
See Note 5
1, 2, 3
80
2
Currenrain requiro ensure modff
Module On Pin Leakage Current
Pull-Up Voltage
20
µA
V
Imax draw froin alith module sl on
ee Figure A
See Note 5
1, 2, 3
3.2
4
RELIABILITY CHARACTERISTICS
Calculated MTBF (MIL-STD-217F2)
GB @ Tcase = 70ºC
4030
338
Hrs.
103 Hrs.
AIF @ Tcase = 70ºC
WEIGHT CHARACTERISTICS
Device Weight
45
g
Electrical Characteristics Notes
1. Converter will undergo input age shutdown
2. Derate output power for continution per Figure 5.
3. High or low state of inpoltage st for about 200µs td on butdowcircuitry.
4. Current limit inceptioed as twhere the output voltadropped of its nominal value. See Current Limit discussion in
Features Description sec
5. Parameter not tested but gd to thmit specifie
6. Load current transition time ≥
7. Line voltage tion time ≥ 1
8. Input volta≤ 250µs.
9. Operating the a synchrization frecy above runnfrequency will cause the converter’s efficiency to be slightly reduced
and it may also caeduction in the mm output /power available. For more information consult the factory.
10. After a disablor fauodule is inbited frestarting ms. See Shut Down section of the Control Features description.
11. Only the ES anHB grade oducts are at thteratureThe C grade products are tested at one temperature. Please refer to the
Construction and Environmental Stress ScOptiofor details.
12. These derating cues apply for thES and e prodThe C grade product has a maximum case temperature of 70ºC.
13. The specified operag case temperture for Eprods is -45ºC to 100ºC. The specified operating case temperature for C grade products
is 0ºC to 70ºC.
Product# MQHR-28-3R3S
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005355 Rev. 3
08/13/13
Page 4
MQHR-28-3R3S
Output: 3.3V
Current: 7.5A
Technical Figures
100
95
90
85
80
75
70
65
60
100
95
90
85
80
75
70
65
60
16 in
16 Vin
28 Vin
40 Vin
28 Vin
in
-C
0.0
0.8
1.5
2.3
3.0
3.8
4.5
5.3
6.0
6.8
7.5
Load Current (A)
Casemperatur
Figure 1: Efficiency at nominal output voltage vs. load current for
igure 2cy at nomnal output voe and 6ed powvs.
minimum, nominal, and maximum input voltage at Tcase=25°C.
cae tempeinput voltage of 16V, nd 40V
6
5
4
3
2
3
2
1.5
1
6 Vin
16 Vin
1
0
2
4Vin
28 Vin
40 Vin
0
0.0
0.8
1.5
2.3
3.0
3.8
4.
6.0
6.8
7.5
-55ºC
25ºC
125ºC
rrent (A)
Case Temperature (ºC)
Figure 4: Power dissipation at nominal output voltage and 60% rated
Figure 3: Power dissinominut voltage vs. load curre
wer vs. case temperature for input voltage of 16V, 28V, and 40V.
for minimum, nominal, anum inpoltage at Tce=25°C.
9.0
7.5
6.0
4.5
3.0
1.5
0.0
30
20
15
10
5
Data Pending
Tjmax = 105º C
Tjmax = 125º C
Tjma
0
25
6
85
105
125
145
Cae Temperature (ºC)
Figure 5: Output Currtput Power derating curve as a
function of Tcase and the mum desired power MOSFET junction
temperature at Vin = 28V (se Note 12).
Figure 6: Output voltage vs. load current showing typical current limit
curves at Vin = 28V.
Product# MQHR-28-3R3S
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005355 Rev. 3
08/13/13
Page 5
MQHR-28-3R3S
Output: 3.3V
Current: 7.5A
Application Section
BASIC OPERATION AND FEATURES
CONTROL FEATURES
The MQHR DC/DC converter uses a two-stage power ENABLE: The MQHR converter has one enable pin, ENA1
conversion topology. The first, or regulation, stage is a (pin 4), which is referenced with rto the converter’s
buck-converter that keeps the output voltage constant over input return (pin 2). It must ave a gh level for the
variations in line, load, and temperature. The second, or converter to be enabled; a w inhe converter.
isolation, stage uses transformers to provide the functions of
The enable pin is internally igh shat an open
input/output isolation and voltage transformation to achieve
connection will enabthe convFiguA shows the
the output voltage required.
equivalent circuit looking into the pin. It is TTL
Both the regulation and the isolation stages switch at a fixed compatible and hystersis.
frequency for predictable EMI performance. The isolation
stage switches at one half the frequency of the regulation
stage, but due to the push-pull nature of this stage it
creates a ripple at double its switching frequency. As a
result, both the input and the output of the converter have a
fundamental ripple frequency of about 550 kHz in the free-
running mode.
82.5K
10K
E
O ENABLE
RCUITRY
Rectification of the isolation stage’s output is accomplished
with synchronous rectifiers. These devices, which are
MOSFETs with a very low resistance, dissipate far less en
than would Schottky diodes. This is the primary reaso
the MQHR converters have such high efficiency, particularly
at low output voltages.
PN4
TN
Figure A: Circuit diaown for refery, actual circuit
cmponents may der fres shown for uivalent circuit.
Besides improving efficiency, the synchrorectifiers
permit operation down to zero load current. s no
longer a need for a minimum load, as is typical for c
that use diodes for rectification. The ynchronous re
actually permit a negative load currento flow back into t
converter’s output terminals if the load is a source of short
or long term energy. The MQHR nvertes employ “back-
drive current limit” to keep ative output trminal
current small.
SHUT DOWN: The Mconverter will shut down in
response only five condENA input low, VIN input
below unltage shutdowthreshold, VIN input above
over-voltage wn threshold, output voltage below the
output under-vohreshold, and output voltage above
thutput over-vlthreshold. Following any shutdown
event, there is a startp inhibit delay which will prevent the
converter from estarting for approximately 100ms. After
e 100ms delay lapses, if the enable inputs are high and
put voltge is within the operating range, the converter
wtart. the VIN input is brought down to nearly 0V
and nto the operating range, there is no startup inhibit,
and the output voltage will rise according to the “Turn-On
ay, Rising Vin” specification.
There is a control circuit in the MQnverter that
determines the conductte of the pwer swies.
It communicates ross ation barrier thra
magnetically couvice. to-isolators are use
An input under-voltatdown ature with hysteresis i
provided, as well as an veroltage sown and an
output ooltage limit. e is also an t current
limit that constant ahe load impedancreases
(i.e., there is back or fold-focharacc to
the output currehis condition). hen a lolt
is removed, the outvoltage s exnentially tits
nominal value without an overshoa load pulls the
output voltage below about 0% of nal, thonverter
will shut down attempt to clear thfau. After a
short delay it will try to uto-restart.
RMOTE SENSE: The purpose of the remote sense pins
is to correct for the voltage drop along the conductors that
connect the converter’s output to the load. To achieve
this goal, a separate conductor should be used to connect
the +SENSE pin (pin 10) directly to the positive terminal
of the load, as shown in the connection diagram on Page
2. Similarly, the –SENSE pin (pin 9) should be connected
through a separate conductor to the return terminal of the
load.
NOTE: Even if remote sensing of the load voltage is not
desired, the +SENSE and the -SENSE pins must be connected
to +Vout (pin 7) and OUTPUT RETURN (pin 8), respectively,
to get proper regulation of the converter’s output. If they
are left open, the converter will have an output voltage that
is approximately 200mV higher than its specified value.
The MQHR converter’s ol circuit does not implement an
over-temperature shutdo
The following ss desche use and operation of
additional ctrol fes provy the MQHR converter.
Product# MQHR-28-3R3S
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005355 Rev. 3
08/13/13
Page 6
MQHR-28-3R3S
Output: 3.3V
Current: 7.5A
Application Section
Inside the converter, +SENSE is connected to +Vout with a Figure B shows the equivalent circuit looking into the SYNC
100Ω resistor and –SENSE is connected to OUTPUT RETURN IN pin and Figure C shows the equivalent circuit looking into
with a 10Ω resistor.
the SYNC OUT pin.
It is also important to note that when remote sense is used,
the voltage across the converter’s output terminals (pins 7
and 8) will be higher than the converter’s nominal output
voltage due to resistive drops along the connecting wires.
This higher voltage at the terminals produces a greater
voltage stress on the converter’s internal components and
may cause the converter to fail to deliver the desired output
voltage at the low end of the input voltage range at the
higher end of the load current and temperature range.
Please consult the factory for details.
5V
T
FROM SYNC
CIRCUITRY
PIN 5
PIN 2
IN RTN
OPOR
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 guarant
to be interpreted as a logic low, and its high value s
be above 2.0V to be guaranteed to be interpreted as a logic
Figure ivalent circulooking into YNC Owith
spect tTN (inpureturn) pin.
OUTPUT VOE TRIMthe Tpin (pi11) can
st the MQHR converter’ut vo±10% around
value.
high. The transition time between the two states should be To trim thoutput vage above iminal value, connect
less than 300ns.
an external resistothe TRIM the –SENSE pin
as shown in Figre De value of his trim up resistor
shold be chosen accoto the following equation or
from Figure E:
If the MQHR converter is not to be synchroniSYNC
IN pin should be left open circuit. The conl
then operate in its free-running mode at a feque
approximately 550 kHz.
Rtrim 6000Ω*Vnom
- 30000Ω
ut - Vnom
If, due to a fault, the SYNC IN pin s held n either a ogic low
or logic high state continuouslthe SNC IN freuency
is outside the 500-700 kHz rQHR converter will
revert to its free-running frequenc
whre:
Vnom = the corter’s nominal output voltage,
Vout = the desired output voltage (greater than
Vnom), and
Rtrim up is in Ohms.
The MQHR converter alsa SYNC OUT pin 5). This
output can be used to drivYNC IN pins of as mas
ten (10) other MQHnverte pulse train comi
of SYNC OUT has cycle % and a frequency t
matches the switchinency he converter with whic
it is associated. This cy ieither three-running
frequency here is no nchronizatioal at the
SYNC IN e synchrotion frequency ie is.
As tput voltage is trimmed up, it produces a greater
voltage stress on the converter’s internal components
d may cause the converter to fail to deliver the
ed output voltage at the low end of the input
vge range at the higher end of the load current and
temperature range. Please consult the factory for details.
To trim the output voltage below its nominal value, connect
an external resistor between the TRIM pin and the +SENSE
pin. The value of this trim down resistor should be chosen
according to the following equation or from Figure E:
The synchronizure is entirely atible at
of SynQor’s MQFL f converrs.
5V
5K
Rtrim down(Ω) = 15100Ω*Vout - 6000Ω*Vnom
- 30000Ω
Vnom - Vout
TO SYNC
PIN 6
CIRCUITRY
SYNC IN
N RT
PIN 2
where:
Vnom = the converter’s nominal output voltage,
Vout = the desired output voltage (less than Vnom),
and
Figure B: Equivaleit looking into the SYNC IN pin with
respect to the IN RTN (turn) pin.
Rtrim down is in Ohms.
Factory trimmed converters are available by request.
Product# MQHR-28-3R3S
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005355 Rev. 3
08/13/13
Page 7
MQHR-28-3R3S
Output: 3.3V
Current: 7.5A
Application Section
shutdown threshold does not change with output trim or
sense drops; excessive trim-up or output wiring drops may
cause an output over-voltage shutdown event. After a
startup inhibit delay, the converter empt to restart.
10000
Trim Up
Trim Down
OUTPUT UNDER-VOLTAGSHUT: The MQHR
converter will also shut dhe voat its power
output pins ever dips below 6the nnal value for
more than a few milonds. t voage reduction
due to output current overload (cimit) is the most
common trigger fhis shtdown. Thutdown reshold
does not changoutputrim buat only 10%, trim-
down should not this eveAfter a rtup inhibit
delay, the certer mpt restart. own
is disabled during startu
1000
100
10
BACKRIVE CURRENT LIMIT: verters that use
MOSFs synchronus rectifiers are e of drawing
negarrent frothe load the losoure of
sort- or rm enrgy. This neve currreferred
to as a “bacurrent”.
-10% -8%
-6%
-4%
-2%
0%
2%
4%
6%
8%
10%
Output Voltage Adjustment
Figure E: Trim up and Trim down as a function of external trim resistance.
tions where back-drivrent occur include
converters tat do mploy current sharing.
It caoccur when convertving different output
voltages are conntogether th either explicit or
parasitic diodes hat, normally obecome conductive
dug startup oshutFinally, some loads, such as
motors, can return energheir power rail. Even a load
apacitor source of backenergy for some period of
time durintdown transnt.
INPUT UNDER-VOLTAGE SHUTDOWN: The M
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 igher than
the turn-off threshold. In addition, the Mverter
will not respond to a state of the input voltagit
has remained in that state for more than about 200µ
hysteresis and the delay ensure propoperatiowhen
source impedance is high or in a noisy nvironment.
To avoid any prthat might arise due to back-drive
cunt, the MQHrters limit the negative current
that the converter can draw from its output terminals. The
threshold for this back-drive current limit is placed sufficiently
low zero so tt the converter may operate properly
to zero oad, but its absolute value (see the Electrical
Ceristicpage) is small compared to the converter’s
rateut current.
INPUT OVER-VOLTAGE STDOWN: The MQHR
converter also has an over-vure that ensues the
converter will be off if the input voo high. It also
has a hysteresis and time delay to enser operation.
OUTPUT OVER-VOLTHUTDOWN: The HR
converter will shut wn if age at its power t
pins ever exceed130he nominal value.
RTRIM DOWN
1
12
+VIN
N/C
RTRIM UP / RTRIM SENSE
2
11
RTN
TRIM
10
CASE
+SNS
+
+
28 Vdc
MQHL
MQHR
_
4
5
6
9
8
7
1
-SNS
OUT RTN
+VOUT
Load
_
pen
ns
SYNC OUT
SYNC IN
Figure D: Typical connecr output voltage trimming.
Product# MQHR-28-3R3S
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005355 Rev. 3
08/13/13
Page 8
MQHR-28-3R3S
Output: 3.3V
Current: 7.5A
Application Section
CURRENT LIMIT: In the event of excess load, the MQHR When the converter is mounted on a metal plate, the plate
converter will quickly reduce its output voltage to keep will help to make the converter’s case bottom a uniform
the load current within safe limits (see Figure 6). If the temperature. How well it does so depends on the thickness
overload persists for more than 14 milliseconds, the converter of the plate and on the thermal coce of the interface
will shut off, wait a restart delay, and then automatically layer (e.g. thermal grease, hermetc.) between
attempt to re-start. The timeout is internally implemented the case and the plate. Uthis very well, it
with an integrator: counting up whenever current limit is is important not to mistake te’s teature for the
active, and counting down at 1/5th the rate whenever current maximumcasetemperaure. Itorthetobeasmuch
limit becomes inactive. In this way a series of short-duration as 5-10ºC different at full power high temperatures.
overloads will not cause the converter to shut down, while it It is suggested thaa thermocouple ached directly to
will shut down in response to sustained overloads.
the converter’s chroua small he in the plae when
investigating how e converer is getting. Care must
also be mae to ehat theis not a thermal
resistance beteen thocouple and tho
whatever adhesive mighed to hold the thermo
in pla
THERMAL CONSIDERATIONS: Figure 5 shows the suggested
Power Derating Curves for this converter as a function of the case
temperature and the maximum desired power MOSFET junction
temperature.Allothercomponentswithintheconverterarecooler
thanitshottestMOSFET, whichatfullpowerisnomorethan20ºC
higher than the case temperature directly below this MOSFET.
INPUTEM INSABILITY: his cn can occur
ecausdc-dc cnverter aprs incrtally s a
negative ce load. A detaileplicatiote titled
“Input System ability” is ailable e SynQwebsite
h provides an underng of this instability
d shows the peferrution for rrecting it.
The Mil-HDBK-1547A component derating guideline calls
for a maximum component temperature of 105ºC. Figure 5
therefore has one power derating curve that ensures this
is maintained. It has been SynQor’s extensive experience
reliable long-term converter operation can be achieved with
a maximum component temperature of 125ºC. In extreme
cases, a maximum temperature of 145ºC is permle, but not
recommended for long-term operation where ility is
required. Derating curves for these higher temperts
are also included in Figure 5. The maximum case temp
at which the converter should be operd is 135ºC
Product# MQHR-28-3R3S
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005355 Rev. 3
08/13/13
Page 9
MQHR-28-3R3S
Output: 3.3V
Current: 7.5A
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-28-3R3S
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005355 Rev. 3
08/13/13
Page 10
MQHR-28-3R3S
Output: 3.3V
Current: 7.5A
Mechanical Diagrams
MQHR-28-3R3S-U-ES
DC-DC ConvERtER
28viꢀ 3.3vꢁuꢂ @ 7.5A
PIN DIGNATINS
Pin Functi
1
2
3
Positive
Input return
4
Ena
5
6
7
Sync o
c inpu
e ouput
Output return
Sense
10
11
12
ense
Trim
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-28-3R
-DC ConvERtER
.3vꢁuꢂ @ 7.5A
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-28-3R3S
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005355 Rev. 3
08/13/13
Page 11
MQHR-28-3R3S
Output: 3.3V
Current: 7.5A
Mechanical Diagrams
MQHR-28-3R3S-X-ES
DC-DC ConvERtER
28viꢀ 3.3vꢁuꢂ @ 7.5A
PIN DIGNATINS
Pin Functin
1
2
3
Positiv
Input return
4
Ena
5
6
7
Sync o
c inpu
e ouput
Outpreturn
- Sense
10
11
12
ense
rim
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-28-3R
ConvERtER
uꢂ @ 7.5A
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-28-3R3S
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005355 Rev. 3
08/13/13
Page 12
MQHR-28-3R3S
Output: 3.3V
Current: 7.5A
Mechanical Diagrams
PIN SIGNATONS
MQHR-28-3R3S-Z-ES
DC-DC ConvERtER
28viꢀ 3.3vꢁuꢂ @ 7.5A
Pi# Function
1
2
3
Post
Input return
e
4
E
6
7
Sync ut
ync inp
ive otput
Outreturn
- Sense
10
11
12
Sense
Trim
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-28-3R3S
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005355 Rev. 3
08/13/13
Page 13
MQHR-28-3R3S
Output: 3.3V
Current: 7.5A
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-28-3R3S
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005355 Rev. 3
08/13/13
Page 14
MQHR-28-3R3S
Output: 3.3V
Current: 7.5A
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-28-3R3S-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-28-3R3S
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005355 Rev. 3
08/13/13
Page 15
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