MQHL-28-7R5S [SYNQOR]
HIGH RELIABILITY DC-DC CONVERTER; 高可靠性DC-DC转换器
| 型号： | MQHL-28-7R5S |
| 厂家： | 
SYNQOR WORLDWIDE HEADQUARTERS |
| 描述： | HIGH RELIABILITY DC-DC CONVERTER |
| 文件： | 总14页 (文件大小：1069K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MQHL-28-7R5S
Single Output
HI G H RELIABILITY DC-DC CONVERTER
16-40 V
16-50 V
7.5 V
6.6 A
88@ 3.88% @ 6.6A
Continuous Input
Transient Input
Output
Output
Efficy
FU L L PO W E R OP E R A T I O N : -55ºC TO +125ºC
The MilQor series of high-reliability DC-DC converters
brings SynQor’s field proven high-efficiency synchronous
rectifier technology to the Military/Aerospace industry.
SynQor’s innovative QorSeal™ packaging approach
ensures survivability in the most hostile environment
Compatible with the industry standard format, these
converters operate at a fixed frequency, have
isolators, and follow conservative component derating
guidelines. They are designed and factured to
comply with a wide range of military standa
6
@6.
-Y-HB
MQHL-
8Vin±7.
Design Process
MQHL series converters are:
• Designed for reliability per N41-A guidelines
F
E A T U R IN G O R -REL S S E M B L Y
EAL™ H
Q
S
I
A
• Designed with components derated
— MIL-HDBK-154
Features
— NAVSO P3641A
xed switching frequency
• No opto-isolators
• Remote sense
Qualification ss
• Clock synchronization
• Primary referenced enable
• Continuous short circuit and overload protection
• Input under-voltage lockout/over-voltage shutdown
• Output under voltage and over voltage protection
MQHconverters alified to:
• MIL-STD
— consisRTCA/D0-160E
• SynQors First Ae Qualificn
— conistent with MIL-STD-8
• SynQor’s Lng-Term Stoge Survty Qucation
• SynQor’s on-going life test
Specification Compliance
In-Line Manufang Proess
MQHL series converters (with MQHE filter) are designed to meet:
• MIL-HDBK-704-8 (A through F)
• RTCA/DO-160E Section 16
• MIL-STD-1275B
• AS9100 and 9001:2ertified facility
• Full cent treability
• Temperacling
• DEF-STAN 61-5 (part 6)/5
• MIL-STD-461 (C, D, E)
• RTCA/DO-160E Section 22
• Constant acion
• 24, 96, 160 hon-in
• Three level tempeature screening
Product # MQHL-28-7R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005201 Rev. 1
04/06/09
Page 1
MQHL-28-7R5S
7.5V
6.6A
Output:
Current:
Technical Specification
BLOCK DIAGRAM
REGULATION STAGE
OLATION STAGE
7
CURRENT
SENSE
1
POSITIVE
OUTPT
POSITIVE
INPUT
T1
T2
1
T2
2
INPUT
RETURN
OUTPUT
RTURN
3
CASE
GATE DRIVERS
ATE CO
12
UVLO
OVSD
CURRENT
LIMIT
NO CONNECT
11
4
TRIM
ENABLE 1
PRIMAR
CONT
CONTROL POWR
OVP
SECOND
CONTRO
10
5
AGNE
FEEDBACK
+ SENSE
SYNC OUT
9
6
-
SENSE
SYNC IN
TYPICAL CONION DIAGM
1
12
+VI
RTN
N/C
2
5
6
11
10
9
TRIM
CASE
+SNS
-SNS
+
+
28 Vdc
MQHL
ENA 1
Load
8
open
ans
on
SYNC OUT
SYNC IN
OUT RTN
+VOUT
7
Product # MQHL-28-7R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005201 Rev. 1
04/06/09
Page 2
MQHL-28-7R5S
7.5V
6.6A
Output:
Current:
Technical Specification
MQHL-28-7R5S ELECTRICAL CHARACTERISTICS
Parameter
Min. Typ. Max. Units Notes & Conditions
Group A
Vin=28 V dc ±5%, Iout=6.6 A, CL=0 F, free rote 10)
unless otherwise specified
Subgroup
(see Note 13)
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
60
50
-0.8
-1.2
V
V
V
V
Operating
See Note 1
See Note 2
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 (≤100 µs)
Operating Case Temperature
Storage Case Temperature
Lead Temperature (20 s)
-65
Voltage at ENA1, ENA2
-1.2
INPUT CHARACTERISTICS
Operating Input Voltage Range
"
16
16
28
28
40
50
V
V
Cs
Tra
See Not
1, 2, 3
4, 5, 6
Input Under-Voltage Lockout
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
14.00 14.75
0.80
1, 2, 3
1, 2, 3
1, 2, 3
0.85
0.90
SeNote 3
52.0
50.
1.0
55.0
5
58.0
56.5
2.0
V
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 = 16 V; Iout = 6.
No Load Input Current (operating)
Disabled Input Current (ENA)
Input Terminal Current Ripple (pk-pk)
OUTPUT CHARACTERISTICS
Output Voltage Set Point (Tcase = )
Output Voltage Set Point Over T
Output Voltage Line Regulation
Output Voltage Load Regulation
Total Output Voltage Range
Output Voltage Ripple and ak to Peak
Operating Output Cuent Ra
Operating Output Range
Output DC Curreneption
Back-Drive Current LEnabl
Back-Drive Current Limisable
Maximuutput Capacita
DYNRACTERIST
Output Vtion Load nsient
For a Pos. e in Load Curren
For a Ng. SteLoad Curent
Output Voltge Dviaine Transi
For a Pos. tep Change in Line Volt
For a Neg. Sep Change in Lie Volta
Turn-On Transie
75
10
40
V28 V, 50 V
Band00 kHz – 10 MHz; see Figure 14
6
7.42
7.40
-20
7.5
7.50
0
0
7.50
20
7.58
7.60
20
10
7.65
40
6
V
mV
mV
W
A
A
Vout asens
1
2, 3
"
" ; Vin = 16 V, 28 V, 50 V; Iout=6.6 A
" ; Vout @ (Iout=0 A) - Vout @ (Iout=6.6 A)
"
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
Bandwith = 10 MHz; CL=11µF
0
0
8
9
3
10
Se Note 4
30
5,000
See Note 6
00
-
350
mV
mV
Total Iout step = 3.3A‹-›6.6A, 0.66A‹-›3.3A; CL=11µF
4, 5, 6
4, 5, 6
0
"
Vin step = 16V‹-›50V; CL=11 µF; see Note 8
-100
100
100
mV
mV
"
"
4, 5, 6
4, 5, 6
Output Voltae Rise Time
Output Voltage Overst
Turn-On Delay, Risi
6
0
5.5
3.0
180
20
10
2
8.0
6.0
250
25
ms
%
ms
ms
ms
ms
Vout = 0.75V-›6.75V; Full Resistive Load
Resistive load
ENA = 5 V; see Notes 9 & 11
See Note 9
See Note 11
4, 5, 6
See Note 5
4, 5, 6
Turn-On Delay, Rising
Restart Inhibit Time
4, 5, 6
4, 5, 6
Short Circuit ime
15
4, 5, 6
EFFICIENCY
Iout = 6.6 6 Vin)
TBD
TBD
TBD
TBD
TBD
TBD
88
89
%
%
%
%
%
%
W
W
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
Iout = 3.3 Vin)
Iout = 6.6 A )
88
Iout = 3.3 A (2
88
Iout = 6.6 A (40 V
86
Iout = 3.3 A (40 Vin
86
Load Fault Power Dission
Short Circuit Power Dissipation
TBD
TBD
TBD
TBD
Iout at current limit inception point; see Note 4
Vout ≤ 1.2 V
Product # MQHL-28-7R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005201 Rev. 1
04/06/09
Page 3
MQHL-28-7R5S
7.5V
6.6A
Output:
Current:
Technical Specification
MQHL-28-7R5S ELECTRICAL CHARACTERISTICS (Continued)
Parameter
Min. Typ. Max. Units Notes & Conditions
Group A
Vin=28 V dc ±5%, Iout=6.6 A, CL0 µF, free Note 10)
unless otherwise specified
Subgroup
(see Note 13)
ISOLATION CHARACTERISTICS
Isolation Voltage
Input RTN to Output RTN
Any Input Pin to Case
Dielectric strength
500
500
500
100
100
V
V
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
V
MΩ
MΩ
nF
22
500
550
600
kHz
Frequency Range
500
2.0
-0.5
20
700
5.5
0.8
80
kHz
V
V
%
1, 2, 3
1, 2, 3
2, 3
Logic Level High
Logic Level Low
Duty Cycle
Se Note 5
Synchronization Output
Pull Down Current
20
40
mA
VSYNC T = 0.8 V
See Note 5
See Note 5
Duty Cycle
Output connected to Sof othunit
Enable Control (ENA)
Off-State Voltage
Module Off Pulldown Current
On-State Voltage
Module On Pin Leakage Current
Pull-Up Voltage
0.8
µA
V
µA
1, 2, 3
See Note 5
1, 2, 3
See Note 5
1, 2, 3
80
2
rrent drain uired to ensule is off
20
4.8
Imax drfrolowed with mule still on
See FigurA
3
RELIABILITY CHARACTERISTICS
Calculated MTBF (MIL-STD-217F2)
GB @ Tcase = 70ºC
3
2800
440
BD
10 Hrs.
3
AIF @ Tcase = 70ºC
10 Hrs.
3
Demonstrated MTBF
10 Hrs.
WEIGHT CHARACTERISTICS
Device Weight
5
g
Electrical Characteristics Notes
1. Converter will undergo input over-voltage .
2. Derate output power ated power at e = 135º
3. High or low state oinput vst persist for about 20be acy the loout or shutdown circuitry.
4. Current limit incs define point where the outpge has to 90% of its nominal value.
5. Parameter not teuarantthe limit specified.
6. Load current transiti10 µs
7. Line voage transition t0 µs
8. Inpurise time ≤ 2
9. Operaterter at a chronization frequencthe frrunning frequency will slightly reduce the converter’s efficiency and
may also creduction in the m outpunt/poer available. For more information consult the factory.
10. After a disable ent, moduis inhd from restor 180 ms. See Shut Down section.
11. The modle will attpt to start overd 0ms bre shutting down and waiting to Auto Retry.
12. Only the Eand HB grade products ted at emperatures. The B and C grade products are tested at one temperature.
Please refer o the ESS tabor detail
13. These deratig curves apply for the ES- agradproducts. The C- grade product has a maximum case temperature of 100º C and
a maximum junction mperature rise of 20º ve TCASE. The B- grade product has a maximum case temperature of 85º C and a
maximum junction rature rise of 20º C aull load.
Product # MQHL-28-7R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005201 Rev. 1
04/06/09
Page 4
MQHL-28-7R5S
7.5V
6.6A
Output:
Current:
Technical Specification
BASIC OPERATION AND FEATURES
CONTROL FEATURES
The MQHL DC/DC converter uses a two-stage power ENABLE: The MQFL convertene enable pin, ENA1
conversion topology. The first, or regulation, stage is a (pin 4), which is referencwith to the converter’s
buck-converter that keeps the output voltage constant over input return (pin 2). It ave a high level for the
variations in line, load, and temperature. The second, or converter to be enabled; a ow inhs the converter.
isolation, stage uses transformers to provide the functions of
The enable pin is internally high so that an open
input/output isolation and voltage transformation to achieve
connection will enable the convFigure A shows the
the output voltage required.
equivalent ciookg into the enable pin. It is TTL
Both the regulation and the isolation stages switch at a fixed compatible anysteresis
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
82.5K
result, both the input and the output of the converter have a
fundamental ripple frequency of about 550 kHz in the free-
running mode.
10K
EN
TO ENABLE
CIRCUITRY
Rectification of the isolation stage’s output is accomphed
PIN4
with synchronous rectifiers. These devices, w
MOSFETs with a very low resistance, dissipate far less en
RTN
than would Schottky diodes. This is the primary reason why
PIN2
the MQHL converters have such high efficiency, particularly
at low output voltages.
Figure A: Equlent looking into he ENA1 pin.
Besides improving efficiency, the synchrotifiers
permit operation down to zero load current. To
SHUT WN: The Mconverter will shut down in
longer a need for a minimum load, is typical for cns
responsly five condtions: ENA input low, VIN input
that use diodes for rectification. Thsynchronus recters
below undge lockout threshold, VIN input above
actually permit a negative loacurrento flow back into the
ver-voltage sthreshold, output voltage below the
converter’s output terminalload is a sourcof short
output under-voltthreshold, and output voltage above
or long term energy. The Mrters employ a “bac-
the output over-voltage threshold. Following any shutdown
drive current limit” to keep this output termi
event, there ia startup inhibit delay which will prevent the
current small.
onverter rom restarting for approximately 100ms. After
100ms delay elapses, if the enable inputs are high and
put voltage is within the operating range, the converter
will restart. If the VIN input is brought down to nearly 0V
and back into the operating range, there is no startup inhibit,
d the output voltage will rise according to the “Turn-On
Delay, Rising Vin” specification.
There is a contol cirthe MQHL convthat
determines the ductioe of the power ses.
It communicatess thlation barrier thro
magnetically couplce. Nopto-isolaors are used
An inpnder-voltagut feature hysteresis is
providell as an inover-voltage shwn and an
output ove limit. There io an ocurrt
limit that is neant as the loaedance ases
(i.e., there is not back or -forwd characttic to
the output urrent under this con). a load fault
is removed, the output oltage expoially to its
nominal value ithout an overshoot. oad ult pulls the
output voltage below about 60% of nl, the converter
will shut down to mpt to clear the d fault. After a
short delay it will try to-restart.
REMOTE 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 MQHL conter’s ccircuit does not implement an
over-temperatuutdow
The follsectns describe the use and operation of
additional l features provided by the MQHL converter.
Product # MQHL-28-7R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005201 Rev. 1
04/06/09
Page 5
MQHL-28-7R5S
7.5V
6.6A
Output:
Current:
Technical Specification
Inside the converter, +SENSE is connected to +Vout with a Figure B shows the equivalent circuit looking into the SYNC
100W resistor and –SENSE is connected to OUTPUT RETURN IN pin and Figure C shows the equivalent circuit looking into
with a 10W 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
C OUT
FROM SYNC
CIRCUITRY
PIN 5
2
IN
OPEOR
SYNCHRONIZATION: The MQHL converter’s switching
frequency can be synchronized to an external frequency
source that is in the 500 kHz to 700 kHz range. A puls
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%
range. Its low value should be below 0.8V to be guar
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
Figuivalent crcuit looking SYNC n with
respect tRTN (input return) p
PUT VOLTAGE TRthe Tpin (pin 11) can
he MQHL cverterput voltage ±10% around
its nonal value
high. The transition time between the two es should be To trim the outpage above nominal value, connect
less than 300ns.
external rsistothe TRIM pin to the –SENSE pin
as shown in Figure De value of this trim up resistor
should chosen accoto the following equation or
from F:
If the MQHL converter is not to be synchronizedC
IN pin should be left open circt. The convll
then operate in its free-running mode at a requencof
approximately 550 kHz.
6000Ω *Vnom
Rtrim
- 30000Ω
If, due to a fault, the SYNC held in either logic low
or logic high state continuousSYNC IN frequeny
is outside the 500-700 kHz range, HL converter w
revert to its free-runquency.
Vout – Vnom
where:
Vom = the converter’s nominal output voltage,
Vout = the desired output voltage (greater than
Vnom), and
The MQHL conveer also SYNC OUT pin (pThis
output can be drive YNC IN pins of as as
ten (10) other MverteThe pulse train comin
of SYNC OUT has a ycle o50% and frequency t
matchehe switching ncy of the cer with which
it is ad. This frncy is either tee-runnng
frequencis no vlid synchization l at t
SYNC IN pin, nchronization ency if is.
Rtrim up is in Ohms.
As the output voltage is trimmed up, it produces a greater
ltage 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.
The synchonizatioeature irely mtible wh that
of SynQor’s MQFL family of cons.
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:
5V
15000Ω *Vout—6000Ω *Vnom
Rtrim down(Ω ) =
- 30000Ω
Vnom—Vout
TO SYNC
CIRCUITRY
PIN 6
where:
SN
RTN
Vnom = the converter’s nominal output voltage,
Vout = the desired output voltage (less than Vnom),
PIN 2
and
Rtrim down is in Ohms.
Figure B: Equivalent uit looking into the SYNC IN pin with
respect to the IN RTN (input return) pin.
Factory trimmed converters are available by request.
Product # MQHL-28-7R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005201 Rev. 1
04/06/09
Page 6
MQHL-28-7R5S
7.5V
6.6A
Output:
Current:
Technical Specification
shutdown threshold does not change with output trim or
sense drops; excessive trim-up or output wiring drops may
cause an output over-voltage own event. After a
startup inhibit delay, the cvertetempt to restart.
10000000
Trim Up
Output Trim Vs Trim Resistance
Trim Down
OUTPUT UNDER-VOLSHUWN: The MQHL
converter will also hut dthe vage at its power
output pins ever ips below the nominal value for
more than a few milliseconds. ut voltage reduction
due to outpurent verload (cent limits the most
common trigghis shutdwn. The shutdown threshold
does not changoutput m but ay 10%, trim-
down shonot this vent. Atinhibit
dela, the converter empt to restart. Thiwn
is dabled during startu
1000000
100000
10000
BARIVE CURRENT LIMIT: rters that use
MOSs synchonous rectrs are le of rawing
a negrrent from the lothe loa source of
short- or loerm enerThis ve curnt is referred
o as a “back-drive curr
-12% -10% -8% -6% -4% -2% 0% 2%
Trim Up/Down
4%
6%
8% 10% 12%
Figure D: Trim up and Trim down as a function of external trim
ns where bk-drivrent might occur include
paralled convers that do mploy current sharing.
It can also occen convertaving different output
voltages are onntogether rough either explicit or
arasitic diodethatnormally off, become conductive
during tartup or shutFinally, some loads, such as
motoreturn energtheir power rail. Even a load
capacitor urce of back-drive energy for some period of
time during own transient.
INPUT UNDER-VOLTAGE LOCKOUT: The MQHL
converter has an under-voltage lockout feature that ensures
the converter will be off if the input voltago low. The
input voltage turn-on threshold is higher turn-off
threshold. In addition, the MQHL converter will nd
to a state of the input voltage unlesit has remainet
state for more than about 200µs. his hysteesis anhe
delay ensure proper operation when the source impedance
is high or in a noisy environ.
To avoid any probms that might arise due to back-drive
current, the MQHL converters limit the negative current
that the convrter can draw from its output terminals. The
hreshold or this back-drive current limit is placed sufficiently
ow zerso that the converter may operate properly
to zero load, but its absolute value (see the Electrical
Characteristics page) is small compared to the converter’s
rated output current.
INPUT OVER-VOLTAGE WN: The MQL
converter also has an over-voltagthat ensures t
converter will be off if input voltagoo high. It al
has a hysteresis and tiy to ensure proper oation.
OUTPUT OVLTAHUTDOWN: The HL
converter will shn if tholtage at its power o
pins ever exceeds 30% f the nonal value. T
RTRIM DOWN
12
11
10
9
+VIN
N/C
TRIM
+SNS
-SNS
RTRIM UP
2
RTN
28 Vdc
4
5
6
CASE
+
-
+
MQHL
ENA 1
Load
8
en
mns
on
SYNC OUT
OUT RTN
7
SYNC IN
+VOUT
Figure E: Typical connection for output voltage trimming.
Product # MQHL-28-7R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005201 Rev. 1
04/06/09
Page 7
MQHL-28-7R5S
7.5V
6.6A
Output:
Current:
Technical Specification
THERMAL CONSIDERATIONS:
Figure 5 shows the When the converter is mounted on a metal plate, the plate
suggested Power Derating Curves for this converter as a will help to make the converter’s case bottom a uniform
function of the case temperature and the maximum desired temperature. How well it does ends on the thickness
power MOSFET junction temperature. All other components of the plate and on the themal conce of the interface
within the converter are cooler than its hottest MOSFET, layer (e.g. thermal grthermd, etc.) between
which at full power is no more than 20ºC higher than the the case and the plate. this one very well, it
case temperature directly below this MOSFET.
is important not to istake te’s tmperature for the
maximumcasetemperature. Itforthemtobeasmuch
as 5-10ºC diffnt at ull power t high tmperatures.
It is suggesta trmocoupbe attached directly to
the converter’s hrough a small hole in the plate when
investigag how e conerter is Care must
also be made to enhat there is not mal
resance between thrmocouple and the caso
whver adhesive mighbe used d the thermocouple
in
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 limit is maintained. It has been SynQor’s extensive
experience that reliable long-term converter operation can
be achieved with a maximum component temperature of
125ºC. In extreme cases, a maximum temperature of 145ºC
is permissible, but not recommended for long-term operation
where high reliability is required. Derating curves for these
higher temperature limits are also included in Figure 5. The INPTEM INSTABILIThis con cn occur
maximum case temperature at which the converter should because c-dc convrter rs incentally as a
be operated is 135ºC.
negative resistance loadetaiplicatn note titled
t System Instabilityailable e SynQor website
rovides an ndersng of why this instability
arisend showthe preferreution for correcting it.
Product # MQHL-28-7R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005201 Rev. 1
04/06/09
Page 8
MQHL-28-7R5S
7.5V
6.6A
Output:
Current:
Technical Specification
CONSTRUCTION AND ENVIRONMENTAL STRESS SCREENING OPTIONS
ES-Grade
(-55 ºC 125 ºC
(Elemeation)
HB-Grade
55 ºC to +125 ºC)
ment Evaluation)
Consistent with
MIL-STD-883F
B-Grade
(-40 ºC to +85 ºC)
C-Grade
(-40 ºC to +100 ºC)
Screening
Internal Visual
Yes
No
Yes
No
Yes
Yes
*
Condition B
(-55 ºto +125 ºC)
Condtion C
(-65 ºC +150 ºC)
Temperature Cycle
Method 1010
Constant
Acceleration
Method 2001
(Y1 Direction)
ondition A
No
No
500g
Method 1015
Load Cycled
Burn-in
• 10s period
12 Hrs @ +100 ºC
24 H125 ºC
6 Hrs @ +125 ºC
Hrs @ +125 ºC
• 2s @ 100% Load
• 8s @ 0% Load
Method 5005
(Group A)
Final Electrical Test
+25 ºC
+25 ºC
-45, 00 ºC
Full QorSe
-55, +5, +125 ºC
Full QorSeal
Mechanical Seal,
Thermal, and Coating
Process
Anodized Packag
Full QorSeal
External Visual
2009
Yes
*
Construction Process
Ruggedized
QorSe
Qoreal
QorSeal
* Pr IPC-A-610 (. D) Clas3
MilQor converters and filters are offer variations of ctruction technique and environmental stress screening options. The
three highest grades, Cnd HB, all use or’s proprietarSeal™ Hi-Rel asembly process that includes a Parylene-C coating
of the circuit, a high perfothermal compound filand a barrier old plated aluminum case. The B-grade version uses
a ruggedized asy procincludes a medium mance al compound filler and a black anodized aluminum case†.
Each successively grade more stringent mechannd electrical testing, as well as a longer burn-in cycle. The ES- and
HB-Grades are also ted of mponents at have been red through an element evaluation process that pre-qualifies each
new batcof devices.
† Note: surface oe black anodized cnot ganteed to be electrically conductive, a star washer or similar device
shouto cut through tface oxelecrical connection to the case is desired.
Product # MQHL-28-7R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005201 Rev. 1
04/06/09
Page 9
MQHL-28-7R5S
7.5V
6.6A
Output:
Current:
Technical Specification
MQHL-28-7R5S-U-HB
PACKAGE PINOUTS
DC-DC CONVERTER
28Vin 7.5VVout @ 6.6AA
Pin #
1
2
Func
POSITIVE INPUT
UT RETURN
C
4
ENA1
5
8
NC OUTPUT
SYNC INPUT
POSITIVE OUTPUT
OUTPUT RETURN
- SENSE
Cas
9
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.
Aluminum with black anodized
finish for the B-Grade products.
2) Pins: Diameter: 0.040" (1.02mm)
Material: Copper
MQHL-28-7RB
ONVERTER
ut @ 6.6AA
Finish:
Gold over Nickel plate
3) All dimensions as inches (mm)
4) Tolerances: a) x.xx +0.02"
(x.x +0.5mm)
b) x.xxx +0.010"
(x.xx +0.25mm)
5) Weight: 1.6 oz.(45.4 g) typical
6) Workmanship: Meets or exceeds
IPC-A-610C Class III
Case W
Product # MQHL-28-7R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005201 Rev. 1
04/06/09
Page 10
MQHL-28-7R5S
7.5V
6.6A
Output:
Current:
Technical Specification
MQHL-28-7R5S-X-HB
DC-DC CONVERTER
28Vin 7.5VVout @ 6.6AA
PACKAGE PINOUTS
Pin #
1
2
Func
POSITIVE INPUT
UT RETURN
C
4
ENA1
5
8
NC OUTPUT
SYNC INPUT
POSITIVE OUTPUT
OUTPUT RETURN
- SENSE
Cas
9
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.
Aluminum with black anodized
finish for the B-Grade products.
2) Pins: Diameter: 0.040” (1.02mm)
Material: Copper
MQHL-28-7RY-HB
VERTER
t @ 6.6AA
Finish:
Gold over Nickel plate
3) All dimensions as inches (mm)
4) Tolerances: a) x.xx +0.02”
(x.x +0.5mm)
b) x.xxx +0.010”
(x.xx +0.25mm)
5) Weight: 1.6 oz.(45.4 g) typical
6) Workmanship: Meets or exceeds
IPC-A-610C Class III
Case Y
Product # MQHL-28-7R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005201 Rev. 1
04/06/09
Page 11
MQHL-28-7R5S
7.5V
6.6A
Output:
Current:
Technical Specification
PACKAGE PINOUTS
MQHL-28-7R5S-Z-HB
DC-DC CONVERTER
28Vin 7.5VVout @ 6.6AA
Pin #
1
2
Func
POSITIVE INPUT
UT RETURN
C
4
ENA1
5
8
NC OUTPUT
SYNC INPUT
POSITIVE OUTPUT
OUTPUT RETURN
- SENSE
Ca
9
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.
Aluminum with black anodized
finish for the B-Grade products.
2) Pins: Diameter: 0.040” (1.02mm)
Material: Copper
Finish:
Gold over Nickel plate
3) All dimensions as inches (mm)
4) Tolerances: a) x.xx +0.02”
(x.x +0.5mm)
b) x.xxx +0.010”
(x.xx +0.25mm)
5) Weight: 1.6 oz.(45.4 g) typical
6) Workmanship: Meets or exceeds
IPC-A-610C Class III
Product # MQHL-28-7R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005201 Rev. 1
04/06/09
Page 12
MQHL-28-7R5S
7.5V
6.6A
Output:
Current:
Technical Specification
MilQor MQHL FAMILY MATRIX
The tables below show the array of MQHL converters available. When ordering SynQor convertersensure that you use
the complete part number according to the table in the last page. Contact the factory for oquire
1.5V
(1R5S)
1.8V
(1R8S)
2.5V
(2R5S)
3.3V
(3R3S)
5V
(05S)
6V
(06S)
7.5
(7R5S)
9V
(09S)
V
15V
(15S)
28V
(28S)
Single Output
MQHL-28
16-40Vin Cont.
16-50Vin 1s Trans.*
Absolute Max Vin = 60V
20A
20A
20A
20A
20A
20A
15A
15A
10A
10A
8.3A
8.3A
6.6A
.5A
A
4
4.2A
3.3A
1.8A
MQHL-28E
16-70Vin Cont.
16-80Vin 1s Trans.*
Absolute Max Vin =100V
5V
(05D)
12V
(12D)
15V
(15D)
Dual Output
MQHL-28
16-40Vin Cont.
10A
Total
8.3A
Total
6.6A
Total
16-50Vin 1s Trans.*
Absolute Max Vin = 60V
MQHL-28E
16-70Vin Cont.
10A
Total
8.3A
Total
6.6A
Total
16-80Vin 1s Trans.*
Absolute Max Vin =100V
*Converters may be operated continuously at the hignsient input voage, but some copontrical and therstresses would be beyond
MIL-HDBK-1547A guidelines.
†80% of total output current available on anone output
Product # MQHL-28-7R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005201 Rev. 1
04/06/09
Page 13
MQHL-28-7R5S
7.5V
6.6A
Output:
Current:
Technical Specification
PART NUMBERING SYSTEM
The part numbering system for SynQor’s MilQor DC-DC converters follows the format shown in the tow.
Output Voltage(s)
Input
Voltage
Range
Model
Name
Package /
Pinfigur
Screening
Grade
Single
Dual
Output
Output
1R5S
1R8S
2R5S
3R3S
05S
06S
7R5S
09S
X
Y
W
Z
B
C
ES
HB
15
28
28E
MQHL
12S
1
28S
E:
MQH-28-7R5S--ES
APPLICATION NOTES
A variety of application notes echnical white pers can be dwnloaded in pdmat from the SynQor website.
PATENTS
SynQor holds the ng patone or more of which apply to this product:
5,999,417
6,927,
6,222,
7,050,30
6,55,890
072,190
77,109
,146
659
7,1,524
6,731,520
7,269,034
6,894,468
7,272,021
6,896,526
7,272,023
Contact SynQor for further imation:
Phone:
78-849-0600
Warranty
SynQor offers a two (2) year limited warranty. Complete warranty
information is listed on our website or is available upon request from
SynQor.
Toll Free: -567-9596
Fax
949-0602
-mail
b:
pownqor.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.
As: 155 Swanson Road
Boxborough, MA 01719
USA
Product # MQHL-28-7R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005201 Rev. 1
04/06/09
Page 14
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