MQFL-28VE-3R3S-Y-ES [SYNQOR]
HIGH RELIABILITY DC-DC CONVERTER; 高可靠性DC-DC转换器
| 型号： | MQFL-28VE-3R3S-Y-ES |
| 厂家： | 
SYNQOR WORLDWIDE HEADQUARTERS |
| 描述： | HIGH RELIABILITY DC-DC CONVERTER |
| 文件： | 总19页 (文件大小：1257K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MQFL-28VE-3R3S
Single Output
HI G H RELIABILITY DC-DC CONVER
16-70V
5.5-80V
3.3V
30A
8815A 8% @ 30A
Continuous Input
Transient Input
Output
Output
ficiecy
FU L L PO W E R OP E R A T I O N : -55ºC T5º
®
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 environments.
Compatible with the industry standard format, e
converters operate at a fixed frequency, ha
no opto-isolators, and follow conservative component
derating guidelines. They are designed anufactured
to comply with a wide range of military stan
R
ꢀ
O
MQFL-28V
C
ou
DC/DC
28V
3.3V
in
Meets all -704 and -1275B uner-voltage transs
Design Process
MQFL series converters are:
• Designed for reliabilitr NAVSO-P3guidelines
D
ESIGNED & MA N U F A C T U R E D IN T H E USA
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 componated per:
— MIL-HDB7A
eatures
— NAVSO A
• Fixed switching frequency
• No opto-isolators
• Parallel operation with current share
• Remote sense
• Clock synchronization
• Primary and secondary referenced enable
Qucation Pr
MQFL seriers are qualified
• MIL-STD-810F
— conistent wiRTCA/D
• SynQor’s Frst Article Quaificatio
• Continuous short circuit and overload protection
• Input under-voltage lockout/over-voltage shutdown
— consistt with MIL-STD-883F
• SynQor’s Long-Term torage Survivabilalification
• SynQor’s on-goinest
Specification Compliance
In-Line MacturProcess
MQFL series converters (with MQME filter) are designed to meet:
• MIL-HDBK-704-8 (A through F)
• RTCA/DO-160E Section 16
• MIL-STD-1275B
• AS910ISO 001:2000 certified facility
• Full compoaceability
• Temperature c
• DEF-STAN 61-5 (part 6)/5
• MIL-STD-461 (C, D, E)
• RTCA/DO-160E Section 22
• Constant accelera
• 24, 96, 160 hour burn-in
• Three level temperature screening
Product # MQFL-28VE-3R3S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005108 Rev. 1
04/23/09
Page 1
MQFL-28VE-3R3S
Curren
30A
ꢁechnical Specification
BLOCK DIAGRAM
BOOST
REGULATION STAGE
ISOLATION STA
CONVERTER
SWITCHES
AND
7
+Vout
CURRENT
SENSE
1
+Vin
CONTROL
2
INPUT
RETURN
RETUR
CASE
GATE DRIVERS
GARS
3
STABILITY
LIMI
12
UVLO
ENABLE 2
4
ENABLE 1
11
P
SECOARY
CONTROL
SHARE
5
SYNC OUT
DATA COUPL
10
+ SENSE
6
SYNC IN
9
SENSE
R
CONTROL
POWER
RANSFORMER
TYPICONNEON DIAGR
1
12
11
10
9
+VIN
ENA 2
open
means
on
Externulk capac
2
3
4
5
6
IN RTN
SHARE
+ SNS
STABILITY
ENA 1
+
-
MQFL
TABILITY
CSTABILITY
+
Load
28 Vdc
- SNS
open
means
on
8
SYNC OUT
SYNC IN
OUT RTN
+VOUT
7
Product # MQFL-28VE-3R3S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005108 Rev. 1
04/23/09
Page 2
MQFL-28VE-3R3S
Curren
30A
ꢁechnical Specification
MQFL-28VE-3R3S ELECTRICAL CHARACTERISTICS
Parameter
Min. Typ. Max. Units Notes & Condition
Group A
Subgroup
Vin=28V dc ±5%, Iout=30A, CLe runnin10)
boost-converter non-operatiorwise sp
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
100
100
-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
135
135
300
50
V
V
°C
°C
°C
V
Transient (≤100µs)
Operating Case Temperature
Storage Case Temperature
Lead Temperature (20s)
-65
Voltage at ENA1, ENA2
-1.2
INPUT CHARACTERISTICS
Operating Input Voltage Range
"
16
28
28
70
80
V
V
C
1, 2, 3
4, 5, 6
5.5
Traee Under-ltage t Profil
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
See Note 3
14.75 15.50
13.80 14.40 1
0.50
1, 2, 3
1, 2, 3
1, 2, 3
1.10
1.80
See Note 15
90.0
8
3.0
95.0
0
100.0
90.0
15.0
V
V
A
mA
mA
mA
mA
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
Vin = 16V; Iout = 30
No Load Input Current (operating)
Disabled Input Current (ENA1)
Disabled Input Current (ENA2)
Input Terminal Current Ripple (pk-pk)
OUTPUT CHARACTERISTICS
Output Voltage Set Point (Tcase
Output Voltage Set Point Over Temp
Output Voltage Line Regulation
Output Voltage Load Regula
Total Output Voltage Rang
Output Voltage Rippland Noo Peak
Operating Output Range
Operating Output Pge
Output DC Current-Lition
Short Circuit Output Cur
Back-Driurrent Limit wed
Back-Dnt Limit whiled
Maximum pacitance
DYNAMIC CISTICS
Output Voage Dd Transient
For a PosStep hn Load Cu
For a Neg. tep Chane in Load C
Settling Tim(either case)
Output Voltage evation Line nsient
For a Pos. SteChange in Line Voltage
For a Neg. Step Changn Line Voltage
Settling Time (either
Turn-On Transient
110
2
25
0
V28V, 70V
Vin = , 70V
BandwidtHz – 10MHz; see Figure 14
120
3.27
3.25
3
3.3
3.30
0
16
3.30
15
3.33
3.35
20
V
V
mV
V
W
A
Vout at sense le
1
2, 3
"
" ; Vin 16V, 28V, 70V; Iout=30A
" ; Vout (Iout=0A) - Vout @ (Iout=30A)
"
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
22
3.37
0
Bandwdth = 10MHz; CL=11µF
0
0
31
3
3
34
35
10
0
See Note 4
Vout ≤ 1.2V
39
50
10,00
mA
µF
See Note 6
00
-250
250
00
mV
mV
µs
Total Iout step = 15A‹-›30A, 3A‹-›15A; CL=11µF
4, 5, 6
4, 5, 6
4, 5, 6
400
250
"
See Note 7
Vin step = 16V‹-›50V; CL=11µF; see Note 8
0
350
350
500
mV
mV
µs
"
"
4, 5, 6
4, 5, 6
See Note 5
250
See Note 7
Output Voltage Rise Tim
Output Voltagrshoot
Turn-On Delay, Vin
6
0
5.5
3.0
1.5
10
2
8.0
6.0
3.0
ms
%
ms
ms
ms
Vout = 0.3V-›3.0V
4, 5, 6
See Note 5
4, 5, 6
4, 5, 6
4, 5, 6
ENA1, ENA2 = 5V; see Notes 9 & 12
ENA2 = 5V; see Note 12
ENA1 = 5V; see Note 12
Turn-On ay, RiNA1
Turn-ORisinNA2
EFFICIENC
Iout = 30A (16
TBD
TBD
TBD
TBD
TBD
TBD
TBD
88
89
88
88
87
87
85
14
14
%
%
%
%
%
%
%
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
1, 2, 3
Iout = 15A (16Vin
Iout = 30A (28Vin)
Iout = 15A (28Vin)
Iout = 30A (40Vin)
Iout = 15A (40Vin)
Iout = 30A (70Vin)
Load Fault Power Dissipation
Short Circuit Power Dissipation
32
34
Iout at current limit inception point; See Note 4
Vout ≤ 1.2V
Product # MQFL-28VE-3R3S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005108 Rev. 1
04/23/09
Page 3
MQFL-28VE-3R3S
Curren
30A
ꢁechnical Specification
MQFL-28VE-3R3S ELECTRICAL CHARACTERISTICS (Contin
Parameter
Min. Typ. Max. Units Notes & Condition
Group A
Subgroup
Vin=28V dc ±5%, Iout=30A, Crunning 10)
boost-converter non-operatiol wise spe
ISOLATION CHARACTERISTICS
Isolation Voltage
Input RTN to Output RTN
Any Input Pin to Case
Dielectric strengt
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
44
500
550
600
kHz
Frequency Range
500
2.0
-0.5
20
600
10
0.8
80
kHz
V
V
%
1, 2, 3
1, 2, 3
2, 3
Logic Level High
Logic Level Low
Duty Cycle
See Note 5
Synchronization Output
Pull Down Current
Duty Cycle
20
25
mA
VSYNC OUT = 0.8V
utput connected to SYNother nit
See Note 5
See Note 5
Enable Control (ENA1 and ENA2)
Off-State Voltage
Module Off Pulldown Current
On-State Voltage
Module On Pin Leakage Current
Pull-Up Voltage
0.8
V
µA
V
A
1, 2, 3
See Note 5
1, 2, 3
See Note 5
1, 2, 3
80
2
Current draired to ensure is off
20
4.5
Imax drafrom wed with moule still on
See Figure
3.2
BOOST-CONVERTER OPERATION
Input Voltage Arming Value
Switching Frequency
Input Terminal Current Ripple (RMS)
Total Converter Efficiency
Iout = 15A (10Vin)
17.5
600
18.0
670
0.9
V
kHz
A
1, 2, 3
1, 2, 3
Vin = = 30A
85
87
86
%
%
1, 2, 3
1, 2, 3
1, 2, 3
Iout = 15A (16Vin)
Iout = 30A (16Vin)
RELIABILITY CHARACTERISTICS
Calculated MTBF (MIL-STD)
GB @ Tcase = 70ºC
2200
39
TBD
s.
AIF @ Tcase = 70
1
3
Demonstrated MT
10
WEIGHT CHARACCS
Device Weight
79
g
Electrical Characteristics
1. Conveill undergo inoltage shutdo
2. Deraower to 50% ted power at TcasºC (see gure 5).
3. High or input volte must perfor aboto be ed on by the lockout or shutdown circuitry.
4. Current limit defined as the re the ooltae has dropped to 90% of its nominal value.
5. Parametr not tuaranteed o the lpecified.
6. Load current transitime ≥ 10µ
7. Settling timmeasurefrom start of nt to twhere the output voltage has returned to ±50mV of its final value.
8. Line voltage tansition time ≥ 00µs.
9. Input voltage time ≤ 250µ
10. Operating thconverter at a synhronizatioencabove the free running frequency will cause the converter’s efficiency to be slightly reduced
and it may also cause a slt reduction in the maoutput current/power available. For more information consult the factory.
11. SHARE pin outputs r failure waning pulsduring a fault condition. See Current Share section of the Control Features description.
12. After a disable or fault module is inhibited from restarting for 300ms. See Shut Down section of the Control Features description.
13. Only the ES and HB gradcts are teted at three temperatures. The C grade products are tested at one temperature. Please refer to the
Construction and nmentaScreenng Options table for details.
14. These derating apply fS- and HB- grade products. The C- grade product has a maximum case temperature of 100ºC.
15. Input OVoltagtdown teun at no load, full load is beyond derating condition and could cause damage at 125ºC.
Product # MQFL-28VE-3R3S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005108 Rev. 1
04/23/09
Page 4
MQFL-28VE-3R3S
Curren
30A
ꢁechnical Specification
Under-Voltage Transient Profile
Boost-Converter is armed when
exceeds this value
V
ARM (~18 V)
Boost-Converter Operational Area
dV 0.1V
VIN
dt
µs
5.5 V
0
1.5
15
Time (s)
Under-Voltage Transient Profile showinthe boost-coner is guaranteeto be operational. The boost-converter must
first be armed by havinVRM. A new under-vge tracan ocur after a delay equal to four times the duration
of the previous ent if ost-converter is rea
Note
This Under-Vansient Profile igned tply with appropiate margins) with all initial-engagement surges, start-
ing or craking votransienand uer-voltage ges specified in:
• MI-STD-704-8 (throu
• RTCA/DO-160E
• MIL-STD-5B
• DEF-STAN part 6)/5 (operational portions)
Product # MQFL-28VE-3R3S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005108 Rev. 1
04/23/09
Page 5
MQFL-28VE-3R3S
Curren
30A
ꢁechnical Specification
TBD
TBD
Figure 1: Efficiency at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at Tcase=25°C.
Figure 2cy at nominaoutput e and 6ated power vs.
case temperature for input ve of 16nd 40
TBD
TBD
Figure 3: Power dissipnominutput voltagvs. load curre
for minimum, nominal, anum iput voltagase=25°C.
Figure 4: Power dissipation at nominal output voltage and 60% rated
wer vs. case temperature for input voltage of 16V, 28V, and 40V.
TBD
TBD
Figure 6: Output voltage vs. load current showing typical current
limit curves.
Figure 5: Output Curre/ Output Power derating curve as a
function of Tcase and the Maximum desired power MOSFET junction
temperature at Vin = 28V (see Note 14).
Product # MQFL-28VE-3R3S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005108 Rev. 1
04/23/09
Page 6
MQFL-28VE-3R3S
Curren
30A
ꢁechnical Specification
TBD
TBD
Figure 7: Turn-on transient at full resistive load and zero output
capacitance initiated by ENA1. Input voltage pre-applied. Ch 1:
Vout (1V/div). Ch 2: ENA1 (5V/div).
Figure n transient at full resoad and F output
capacitance ted by ENAnput vre-appl. Ch 1:
t (1V/div). Ch 2: ENA1 (.
TBD
TBD
Figure 10: Turn-on transient at full resistive load and zero output
pacitance initiated by Vin. ENA1 and ENA2 both previously high.
Ch 1: Vout (1V/div). Ch 2: Vin (10V/div).
Figure 9: Turn-on tranull resie load and ro output
capacitane initiated by Eut voltage pre-d. Ch 1:
Vout (1h 2: ENA2 (
TBD
TBD
Figure 11: Output voltaresponse to step-change in load current
50%-100%-50% of Iout (max). Load cap: 1µF ceramic cap and
10µF, 100mΩ ESR tantalum cap. Ch 1: Vout (200mV/div). Ch 2: Iout
(20A/div).
Figure 12: Output voltage response to step-change in load current 0%-
50%-0% of Iout (max). Load cap: 1µF ceramic cap and 10µF, 100mΩ
ESR tantalum cap. Ch 1: Vout (200mV/div). Ch 2: Iout (20A/div).
Product # MQFL-28VE-3R3S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005108 Rev. 1
04/23/09
Page 7
MQFL-28VE-3R3S
Curren
30A
ꢁechnical Specification
See Fig. 16
See F
iC
MQME
M
Conver
VOUT
TBD
VSOUR
0µF,
ce
E
capacitor
capacitor
Figure et-up diagram showisurements for
Input Terminipple Curreigure 1Output ltage Ripple
ure 16).
Figure 13: Output voltage response to step-change in input voltage
(16V - 50V - 16V). Load cap: 10µF, 100mΩ ESR tantalum cap anµF
ceramic cap. Ch 1: Vout (200mV/div). Ch 2: Vin (20V/div).
TBD
TBD
Figure 15: Input termint rippic, at full rad output curre
and nominal input voltage nQoMQ filter e (50mA/div).
BandwiHz. See Fig
Figure 16: Output voltage ripple, Vout, at nominal input voltage and
ed load current (20mV/div). Load capacitance: 1μF ceramic capacitor
and 10μF tantalum capacitor. Bandwidth: 10MHz. See Figure 14.
TBD
TBD
Figure 17: Rise of outpuvoltage after the removal of a short circuit
across the output terminals. Ch 1: Vout (1V/div). Ch 2: Iout
(20A/div).
Figure 18: SYNC OUT vs. time, driving SYNC IN of a second SynQor
MQFL converter. Ch1: SYNC OUT: (1V/div).
Product # MQFL-28VE-3R3S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005108 Rev. 1
04/23/09
Page 8
MQFL-28VE-3R3S
Curren
30A
ꢁechnical Specification
TBD
TBD
Figure itude of incremental rd transon
(FT = vout/minimumminal, ximum ut voltage at
ll rated power.
Figure 19: Magnitude of incremental output impedance
(Zout = vout/iout) for minimum, nominal, and maximum input
voltage at full rated power.
TBD
TBD
Figure 22: Magnitude of incremental input impedance (Zin = vin/iin)
r minimum, nominal, and maximum input voltage at full rated power.
Figure 21: Magnitude ontal rerse transmion (RT =
iin/iout) fminimum, nommaximum inge at full
rated p
TBD
TBD
Figure 24: High frequency conducted emissions of MQFL-28-05S,
5Vout module at 120W output with MQFL-28-P filter, as measured
with Method CE102. Limit line shown is the ‘Basic Curve’for all
applications with a 28V source.
Figure 23: High frequenconducted emissions of standalone
MQFL-28-05S, 5Vout module at 120W output, as measured with Method
CE102. Limit line shown is the ‘Basic Curve’for all applications with a
28V source.
Product # MQFL-28VE-3R3S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005108 Rev. 1
04/23/09
Page 9
MQFL-28VE-3R3S
Curren
30A
ꢁechnical Specification
The MQFL converter’s control circnot implement an output
over-voltage limit or an overmperadown.
BASIC OPERATION AND FEATURES
The MQFL 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 transform-
ers to provide the functions of input/output isolation and voltage
transformation to achieve the output voltage required.
The following sections dese use operation of addi-
tional control featurerovideMQFonverter.
UNDER-VTAGE TRANIENTS
The MQFL-28VE DC/DC nverters inrporate a special
“boost-crter” stt perits the coliver full
power through transiene its input voltage falls as
5.. Normally, the booonverter is non-operational, and e
cor’s input voage is passed diro its pre-regulation
stathe Block Diagram). Wen an oltage transient
occurost-coverter becomperationd it steps-up
the input to a value reater 16V so t the nominal
output voltage can be su.
In the MQFL-28VE series of converters the regulation stage is
preceeded by a boost-converter that permits these converters
to operate through various Military and Aircraft under-voltage
transients. Further discussion of this feature can be found later in
these notes.
Both the regulation and the isolation stages switch at a fixed
frequency for predictable EMI performance. The isolation ge
switches at one half the frequency of the regulation stage,
to the push-pull nature of this stage it creates a ripple at double i
switching frequency. As a result, both the input and the output of
the converter have a fundamental ripple frequenof about 550
kHz in the free-running mode.
ortant to note that thst-converter stage must first
become “armed” ore it can becperational. This “arming”
occurs when the cer’s input vole exceeds approximately
8V. The bot-conthen becomes operational whenever
the input voltage dropw the arming voltage, and it will
remairational as lonthe input voltage remains within
the regiwn in the Uder-Voltage Transient Profile Page.
If the input vdrops below this transient profile, the boost-
onverter stage uaranteed to continue operating (it may,
but it will protect itlf from excessive stresses). Once the boost-
converter stops operating, the converter’s input voltage will be
reconnected dectly to the input of the pre-regulator stage. The
tput voltge will therefore collapse unless the input voltage is
or greater.
Rectification of the isolation stage’s output is accomph
synchronous rectifiers. These devices, ich are MOSFEs
very low resistance, dissipate far less enrgy than wuld Schotky
diodes. This is the primary reasowhy the MQFL converters have
such high efficiency, particularoutput voltages
Besides improving efficiency, the srectifiers perm
operation down to zero current. Thero longer a nee
for a minimum load, as is r converters that use des for
rectification. The ronours actually permit a ve
load current to flonto the erter’s output terminals
load is a source of song teenergy. TMQFL conv
ers employ a “back-drivt limt” to keep egative output
termint small.
Note: the boost-converter will not become re-armed for the
next transient unless the input voltage once again exceeds
approximately 18V.
The transient profile shown on the Under-Voltage Transient Profile
page is designed to comply (with appropriate margins) with all
initial-engagement surges, starting or cranking voltage transients,
and under-voltage surges specified in:
There is a cot on both the inpoutput of the
MQFL conerter rmines the onducstate of twer
switches. These circucommuniith eer acrss the
isolation barrir through a magneticapled e. No opto-
isolators are us.
• MIL-STD-704-8 (A through F)
• RTCA/DO-160E
• MIL-STD-1275B
A separate bias supplovides power to bohe input and out-
put control circuits. Aother things, this bias supply permits
the converter to operate nitely ino a short circuit and to
avoid a hiccup even a tough start-up condition.
• DEF-STAN 61-5 (Part 6)/5 (operational portions)
Any input voltage transient that fits within the Under-Voltage
Transient Profile can be repeated after a delay that is at least four
times longer than the duration of the previous transient.
An input voltagockout feature with hysteresis is provided,
as well as input over-voltage shutdown. There is also
an output curmit that is nearly constant as the load
impedance decreo a short circuit (i.e., there is not fold-
back or fold-forward racteristic to the output current under this
condition). When a load fault is removed, the output voltage rises
exponentially to its nominal value without an overshoot.
During the time when the boost-converter stage is operational, the
converter’s efficiency is reduced and the input ripple current is
increased. The lower the input voltage, the more these parameters
are affected.
Product # MQFL-28VE-3R3S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005108 Rev. 1
04/23/09
Page 10
MQFL-28VE-3R3S
Curren
30A
ꢁechnical Specification
Usually the converter has an EMI filter upstream of it, and the
source voltage is connected to the input of this EMI filter. When,
during compliance testing, the source voltage goes low during
an under-voltage transient, the input to the converter will go even
lower. This is because the inductance of the EMI filter (as well
as the parasitic source inductance) will cause an oscillatory ring
with the bulk capacitor. With the bulk capacitor that is present
in an MQME-28 filter, the peak of this under-voltage ring may
be approximately 2 volts if the source voltage drops to 6V (it
will be smaller than this at a higher transient source voltage
due to the lower current drawn by the converter). As a result, it
is necessary to add extra bulk capacitor across the converter’s
input pins if the source voltage is going to drop to 6V, as it does
for MIL-STD-704(A) or MIL-STD 1275B. It is recommended that a
100µF/0.25W ESR capacitor be connected across the input pins
of the converter be used as a starting point. For MIL-STD-704(B-F),
where the source voltage drops to only 7V, a 47µF
capacitor would be a good starting point. The exact amoun
capacitance required depends on the application (source induc-
tance, load power, rate of fall of the source voltage, etc). Please
consult the factory if further assistance is requir
when the converter is inhibited the ENA1 pin, the bias
supply is also turned off, wreas tly remains on when
the converter is inhibited the Ein. A higher input
standby current therefore reshe lattese.
Both enable pins are internally high so that an open
connection on th pinwill enabe convertr. Figure A
shows the eqcirclooking io either enable pins. It is
TTL compatible.
5.6V
2K
1N4148
PIN
or PIN 1
ENABLE
TO ENABLE
CIRCUITRY
25
2N3904
PIN 2
(or PIN 8)
N RT
Because input system stability is harder to maintain ut
voltage gets lower, the MQFL-28VE sericonverterare
to give external access to the voltage noe between the boost-n-
verter and the pre-regulator stagesThis acess, at the STABILITY”
pin (pin 3), permits the user to a stablizing bulk pacitor
with series resistance to this noe voltage at this nod
stays above 16V, the amount of carequired is muc
less than would be requon the convernput pins where
the voltage might drop as 5.5V. It is recommendhat a
22µF capacitor wn ESR t 1W be connected en
the STABILITY pin INPUT RN pin (pin 2). Witho
special connection to rnal ne of the coverter, a 300
stabilizing bulk capacitd have been ed across the
converut pins.
Figure alent circuit lking into either the ENA1 or ENA2
pins with ress corresponding return pin.
SHUT DOWN: The MQFL converter will shut down in response
to only four conditions: ENA1 input low, ENA2 input low, VIN
input below uner-voltage lockout threshold, or VIN input above
er-voltagshutdown threshold. Following a shutdown event,
is a tartup inhibit delay which will prevent the converter
from starting for approximately 300ms. After the 300ms delay
elapses, if the enable inputs are high and the input voltage is
ithin 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, and the output voltage will rise
according to the “Turn-On Delay, Rising Vin” specification.
Another advahe STABILITY pt it provo-
age source that se 16V wn the er-voltage ent
occurs. This voltage urce migheful r circitry in
the system.
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. Similarly, the –SENSE pin (pin 9) should be
connected through a separate conductor to the return terminal of
the load.
CONTROL FEAURES
ENABLE: The MQFL cor has two enable pins. Both must
have a logic hivel for nverteto be enabled. A logic
low on either pin hibit therter.
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. If only the +SENSE pin is left
open, the output voltage will be approximately 25mV too high.
The ENA1 n 4) s referenced with respect to the converter’s
input return (pThe ENA2 pin (pin 12) is referenced with
respect to the cor’s output return (pin 8). This permits the
converter to be inhibrom either the input or the output side.
Regardless of which pin is used to inhibit the converter, the
regulation and the isolation stages are turned off. However,
Product # MQFL-28VE-3R3S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005108 Rev. 1
04/23/09
Page 11
MQFL-28VE-3R3S
Curren
30A
ꢁechnical Specification
Inside the converter, +SENSE is connected to +Vout with a resistor
value from 100W to 301W, depending on output voltage, and
–SENSE is connected to OUTPUT RETURN with a 10W resistor
Figure B shows the equivalent cking into the SYNC IN
pin. Figure C shows the equalent coking into the SYNC
OUT pin.
5V
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 volt-
age 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.
5K
TO SYNC
PIN 6
CUITRY
SYN
IN RTN
5K
PI
SYNCHRONIZATION: The MQFL converter’s regulation and
isolation stage switching frequencies can be synchronized to an
external frequency source that is in the 500 kHz to 60
range. The boost-converter stage is free-running at a
kHz while it is operational, and is not affected by synchroniza-
tion signals. A pulse train at the desired frequency should be
applied to the SYNC IN pin (pin 6) with respto the INPUT
RETURN (pin 2). This pulse train should have le in the
20% to 80% range. Its low value should be belobe
guaranteed to be interpreted as a logic low, anits hi
should be above 2.0V to be guaranted to be intrpreted a
logic high. The transition time between te two states should be
less than 300ns.
Figurvalent circuit lookinthe SYNpin with
respect to TN (inputurn) p
5V
SYNC OUT
ROM SYNC
CIRCUITRY
PIN 5
IN RTN
PIN 2
EN COLLECTOR
UTPUT
If the MQFL converter is not to be sd, the SYNC IN p
should be left open circuit. The converteen operate in i
free-running mode at a fy of approximtely 550 z.
Figure C: Equivalent circuit looking into SYNC OUT pin with
respect to the IRTN (input return) pin.
ENT SHARE: When several MQFL converters are placed
in parallel to achieve either a higher total load power or N+1
redundancy, their SHARE pins (pin 11) should be connected
gether. The voltage on this common SHARE node represents the
average current delivered by all of the paralleled converters. Each
converter monitors this average value and adjusts itself so that its
output current closely matches that of the average.
If, due to a faulYNC Is held in either a low
or logic high state uouslyMQFL converter will r
to its free-running fre
The Mverter also a SYNC OUT n 5). Tis
output cato drive e SYNC Iins of ay as t
(10) other MQers. The pulse troming oYNC
OUT has a duty cy50% anfrequcy that mats the
switching frequency of the converh whicassociated.
This frequencis either the ee-runnquencthere is no
synchronizatiosignal at the SYNC IN r the synchroniza-
tion frequency if there .
Since the SHARE pin is monitored with respect to the OUTPUT
RETURN (pin 8) by each converter, it is important to connect all of
the converters’ OUTPUT RETURN pins together through a low DC
and AC impedance. When this is done correctly, the converters
will deliver their appropriate fraction of the total load current to
within +/- 10% at full rated load.
The SYNC OUT signal ilable only when the voltage at the
STABILITY pin (pin 3) is approimately 12V and when
the converter is hibited gh the ENA1 pin. An inhibit
through thNA2 will not tthe SYNC OUT signal off.
Whether or not converters are paralleled, the voltage at the
SHARE pin could be used to monitor the approximate average
current delivered by the converter(s). A nominal voltage of 1.0V
represents zero current and a nominal voltage of 2.2V represents
the maximum rated current, with a linear relationship in between.
The internal source resistance of a converter’s SHARE pin signal is
2.5 kW. During an input voltage fault or primary disable event, the
SHARE pin outputs a power failure warning pulse. The SHARE pin
will go to 3V for approximately 14ms as the output voltage falls.
NOTE: An Mconverter that has its SYNC IN pin driven by
the SYNC OUT f a second MQFL converter will have its
start of its switchine delayed approximately 180 degrees
relative to that of the cond converter.
Product # MQFL-28VE-3R3S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005108 Rev. 1
04/23/09
Page 12
MQFL-28VE-3R3S
Curren
30A
ꢁechnical Specification
NOTE: Converters operating from separate input filters with
reverse polarity protection (such as the MQME-28-T filter) with
their outputs connected in parallel may exhibit hiccup operation
at light loads. Consult factory for details.
100,000
10,000
1,0
100
OUTPUT VOLTAGE TRIM: If desired, it is possible to increase
the MQFL converter’s output voltage above its nominal value. To
do this, use the +SENSE pin (pin 10) for this trim function instead
of for its normal remote sense function, as shown in Figure D.
In this case, a resistor connects the +SENSE pin to the –SENSE
pin (which should still be connected to the output return, either
remotely or locally). The value of the trim resistor should be chosen
according to the following equation or from Figure E:
.00
0.0
0.12
0.18
0.3
0.36
Vnom
IncreaVout (V)
Rtrim = 100 x
[
Vout – Vnom – 0.025
]
where:
Figure E: Output Voltagraph
Vnom = the converter’s nominal output voltage,
Vout = the desired output voltage (greater than Vnom), and
Rtrim is in Ohms.
INPUNDER-OLTAGE LUT: The MQFL converter
has an under-voltckout feature nsures the converter will
be off if the put is too lowThis lockout only appears
when the boost-converot operating. The threshold of input
voltage t which the convill turn on is higher that the thresh-
old at t will turn off. addition, the MQFL converter will
not respontate of the input voltage unless it has remained
in that state fohan about 200µs. This hysteresis and the
deay ensure proper eration when the source impedance is high
or in a noisy environment.
As the output voltage is trimmed up, it producer voltage
stress on the converter’s internal components and mthe
converter to fail to deliver the desired output volage a
end of the input voltage range at the gher end of the load r-
rent and temperature range. Please consut the factorfor details.
Factory trimmed converters are lable brequest.
INPUT OVER-VOLTAGE SHUTDOWN: The MQFL converter
o has an over-voltage feature that ensures the converter will be
e input voltage is too high. It also has a hysteresis and time
delay to ensure proper operation.
1
12
+VIN
ENA 2
2
3
4
5
6
11
Exteal bulk c
RSTABITY
IN RTN
SHARE
10
STABILITY
ENA 1
+SNS
+
28 Vdc
RTRIM
MQFL
9
-SNS
8
open
means
on
SYNC OUT
SYNC IN
OUT RTN
Load
7
+VOUT
BILITY
+
Figure D: Typical connection for output voltage trimming.
Product # MQFL-28VE-3R3S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005108 Rev. 1
04/23/09
Page 13
MQFL-28VE-3R3S
Curren
30A
ꢁechnical Specification
The Mil-HDBK-1547A componeing guideline calls for
a maximum component temerature ºC. Power Derating
Curve figure; therefore haower dcurve that ensures
this limit is maintained. It hn Synextensive experi-
ence that reliable loerm coperan can be achieved
with a maximum component temof 125ºC. In extreme
cases, a maxitemprature of 1is permible, but not
recommended g-term opration where high reliability is
required. Deratins for thehigher teature limits are
also includin Figumaxmum case twhich
the onverter should be ed is 135ºC.
BACK-DRIVE CURRENT LIMIT: Converters that use MOSFETs as
synchronous rectifiers are capable of drawing a negative current
from the load if the load is a source of short- or long-term energy.
This negative current is referred to as a “back-drive current”.
Conditions where back-drive current might occur include paral-
leled converters that do not employ current sharing, or where the
current share feature does not adequately ensure sharing during
the startup or shutdown transitions. It can also occur when con-
verters having different output voltages are connected together
through either explicit or parasitic diodes that, while normally
off, become conductive during startup or shutdown. Finally, some
loads, such as motors, can return energy to their power rail. Even
a load capacitor is a source of back-drive energy for some period
of time during a shutdown transient.
Whe converter is mounted on a late, the plate will
helke the coverter’s case ottom rm temperature.
How oes so depends on thicknethe plate and
on the thonductancof the ace lay(e.g. thermal
grease, thermal pad, etceen the and thplate. Unless
done very wel, it is tant not istake the plate’s
tre for the maximum temperature. It is easy for
them to be as ms 5-10ºC diffat full power and at high
temperatures. It is ested that a ermocouple be attached
irectly to the onverase through a small hole in the plate
when investigating how e converter is getting. Care must
also e to ensure that e is not a large thermal resistance
between mocouple and the case due to whatever adhesive
might be used the thermocouple in place.
To avoid any problems that might arise due to back-drive c
the MQFL converters limit the negative current that the
can draw from its output terminals. The threshold for this back-
drive current limit is placed sufficiently below zero so that the con-
verter may operate properly down to zero loadt its absolute
value (see the Electrical Characteristics page) mpared
to the converter’s rated output current.
THERMAL CONSIDERATIONS: Fige 5 shows he suggd
Power Derating Curves for this convertr as a function of the
case temperature, input voltage the mximum desed power
MOSFET junction temperaturr components ithin the
converter are cooler than the hotte
INPUT SYSTEM NSTABILITY: This condition can occur
because any DC/DC converter appears incrementally as a
negative resisnce load. A detailed application note titled
nput Sysem Instability” is available on the SynQor website
h proides an understanding of why this instability arises,
anows the preferred solution for correcting it.
Product # MQFL-28VE-3R3S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005108 Rev. 1
04/23/09
Page 14
MQFL-28VE-3R3S
Curren
30A
ꢁechnical Specification
CONSTRUCTION AND ENVIRONMENTAL STRESS SCREENING OPTIONS
ES-Grade
(-55 ºC to +125 ºC)
(Element Evalution)
H
5 ºC to ºC)
nt Evtion)
Consistent with
MIL-SꢁD-883F
C-Grade
(-40 ºC to +100 ºC)
Screening
Internal Visual
Yes
ꢀo
Yes
*
CB
(-55 ºC t)
Codition C
5 ºC to +15C)
ꢁemperature Cycle
Method 1010
Constant
Acceleration
Method 2001
(Y1 Direction)
Condition
(5000g)
ꢀo
500g
Method 1015
Load Cycled
Burn-in
• 10s period
24 Hrs @ 25 ºC
rs @ +15 ºC
1rs @ +
• 2s @ 100% Load
• 8s @ 0% Load
Method 5005
(Group A)
Final Electrical ꢁest
-45, +25, +10ºC
FQo
5, +25, +ºC
FQorSeal
Mechanical Seal,
ꢁhermal, and Coating
Process
Full QorSeal
External Visual
2009
Yes
Yes
Construction Process
QorSeal
Q
QorSeal
* Per IPC-A-6(Rev. D) Class 3
MilQor converters and filtoffered in four variatiof conn technue and environmental stress screening options. The
three highest gra, ES, aall use SynQor’s prry QorHi-Rel assembly process that includes a Parylene-C coating
of the circuit, a hiormanrmal compound filler, nickel barrier gold plated aluminum case. Each successively higher
grade has more strinchanil and eleccal testing, aas a longer burn-in cycle. The ES- and HB-Grades are also con-
structed components e been procuough an elemaluation process that pre-qualifies each new batch of devices.
Product # MQFL-28VE-3R3S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005108 Rev. 1
04/23/09
Page 15
MQFL-28VE-3R3S
Curren
30A
ꢁechnical Specification
0.093
[2.36]
[6.35]
+VIN
ENA 2
1
12
IN RTN
SHARE
2
11
1.50 [38.10]
0.208]
TYP. ON-CUM.
STABILITY
MQFL-28VE-3R3S-X-HB
3
+SNS
-SNS
10 1.260
DC/DC CONVERTER
[32.00]
ENA 1
28Vin 3.3Vout @ 30A
4
5
6
9
8
7
MADE IN USA
OUT RTN
+VOUT
SYNC OUT
SYNC IN
0.040 [1.02]
S/N 0000000 D/C 3205-301 CAGE 1WX10
PIN
2.50 [63.50]
2.76 [70.10]
3.00 [76.20]
50 [1.27
059]
.25]
2.96 [75.2]
8 [5.79]
0.390 [9.9]
CaX
0.093
[2.36]
0.250 [6.35]
+VIN
ENA 2
1
12
11
0.200 [5.08]
TYP. NON-CUM.
IN RTN
STABILITY
RE
2
3
4
5
6
1.50 [38.10]
MQFL-28
DC/DC CONVERTER
28Vin 3.3Vout @ 30A
+SNS
-SNS
10 1.260
[32.00]
ENA 1
7
OU
SYNC OUT
MADE IN USA
0.040 [1.02]
PIN
S/N 005-301 CAGE 1WX10
0.42
[10.7]
2.50 3.50]
6 [70.10]
00 [76.20]
0.050 [1.27]
0.220 [5.59]
0.128 [3.25]
2.80 [71.1]
Case U
0.390 [9.91]
NOTES
PIN DESIGNATIONS
1)
2)
Pins 0.040” (1.02mm) d
Pin Function
Pin Function
Pins Material: r
Finish: d oveel plate
1
2
3
4
5
6
Positive input
Input return
Stability
7
8
9
Positive output
Output return
- Sense
3)
All dimin inhes (mm) Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm)
x.xxx +/-n. (x.xx +/-0.25mm)
4)
5)
6)
Weight: 2.8 og) typical
Enable 1
10 + Sense
11 Share
Workmanship: Mer exceeds IPC-A-610C Class III
Print Labeling on Top Surface per Product Label Format Drawing
Sync output
Sync input
12 Enable 2
Product # MQFL-28VE-3R3S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005108 Rev. 1
04/23/09
Page 16
MQFL-28VE-3R3S
Curren
30A
ꢁechnical Specification
0.300 [7.62]
0.140 [3.56]
1.15 [29.21]
0.250 [6.35]
TYP
0.250 [6.35]
1
2
3
4
5
6
+VIN
12
ENA 2
5.08
TN-CUM.
2.00
[50.80]
IN RTN
STABILITY
SHARE
+SNS
11
10
9
MQFL-28VE-3R3S-Y-HB
DC/DC CONVERTER
28Vin 3.3Vout @ 30A
1.50
[38.10]
-SNS
ENA 1
OUT RTN
+VOUT
SYNC OUT
SYNC IN
MADE IN USA
8
1.750
[445]
S/N 0000000 D/C 3205-301 CAGE 1WX10
7
0.040 [1.02]
0 [1.27]
0 [5.59]
1.750 [44.45]
2.50 [63.50]
0.375 [9.52]
2.96 [75.2]
0.2
0.390 [9.91]
e Y
Ca
(variant oY)
Case W
(variant of Y)
0.250 [6
0.250 [6.35]
0.200 [5.08]
00 [5.08]
P. NON-CUM.
TYP. NON-CUM.
0.040 [1.02]
PIN
0.040 [1.2]
P
0.420 [10.7]
0.050 [1.27]
0.220 [5.59]
0.
0.05
0.3
2.80 [71.1]
0.525 [13.33]
0.390
[9.91]
0.390
[9.91]
0.523]
2.80 [71.1]
PIN DESIGNATIONS
Pin Function Pin Function
NOTES
1)
Pins 0.0” (1.diamet
2)
Pins : Cop
1
2
3
4
5
6
Positive input
Input return
Stability
Enable 1
Sync output
Sync input
7
8
9
Positive output
Output return
- Sense
Finish: Gr Nickel plate
All dimensioches (mm) Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm)
x.xxx +/-0.01xx +/-0.25mm)
Weight: 2.8 oz (7typical
Workmanship: Mees or exceeds IPC-A-610C Class III
Print Labeling on Top Surface per Product Label Format Drawing
3)
4)
5)
6)
10 + Sense
11 Share
12 Enable 2
Product # MQFL-28VE-3R3S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005108 Rev. 1
04/23/09
Page 17
MQFL-28VE-3R3S
Curren
30A
ꢁechnical Specification
MilQor Converter FAMILY MATRIX
The tables below show the array of MQFL converters available. When ordering SynQor crs, plesure that you use
the complete part number according to the table in the last page. Contact the factory for otheement
Single Output
Dual Output †
28V
1.5V
1.8V
2.5V
3.3V
5V
6V
7.5V
9V
(
15V
5S)
V
(05D)
±12V
(12D)
±15V
15D)
Full Size
(1R5S) (1R8S) (2R5S) (3R3S) (05S)
(06S) (7R5S) (09S)
28S
MQFL-28
16-40Vin Cont.
24A
Total
A
40A
40A
40A
40A
40A
40A
40A
40A
40A
40A
40A
40A
40A
40A
40A
30A
30A
30A
30A
24A
24A
20A
20A
20A
20A
17A
17A
20A
16A
16A
1A
A
A
11
13A
10A
10A
8A
4A
4A
16-50Vin 1s Trans.*
Absolute Max Vin = 60V
MQFL-28E
16-70Vin Cont.
16-80Vin 1s Trans.*
Absolute Max Vin =100V
T
10A
otal
8A
Total
MQFL-28V
16-40Vin Cont.
5.5-50Vin 1s Trans.*
Absolute Max Vin = 60V
0A
Tot
6.5A
Total
6.5A
6
3.3A
3
4A
MQFL-28VE
16-70Vin Cont.
5.5-80Vin 1s Trans.*
Absolute Max Vin = 100V
20A
Total
8A
Total
6.5A
Total
8A
MQFL-270
155-400Vin Cont.
155-475Vin 0.1s Trans.*
Absolute Max Vin = 550V
24A
Total
10A
Total
8A
Total
A
Output
Dual Output †
8V
1.5V
1.8V
2V
3.3V
5
7.5V
9
15V
(15S)
±5V
(05D)
±12V
(12D)
±15V
(15D)
Half Size
(1R5S) (1R8S) (2R5) (3R3S) 05S)
(06S) (7R5S) (09S)
(28S)
MQHL-28 (50W)
16-40Vin Cont.
16-50Vin 1s Trans.*
Absolute Max Vin = 60V
10A
Total
4A
Total
3.3A
Total
20A
0A
A
20A
15A
1
10A
8A
8A
6.6A
A
5.5A
5.5A
A
4A
3A
3.3A
1.8A
1.8A
MQHL-28E (50W)
16-70Vin Cont.
16-80Vin 1s Trans.*
Absolute Max Vin =100V
10A
Total
4A
Total
3.3A
Total
MQHR-28 (25W
16-40Vin Cont.
16-50Vin 1s Trans.*
Absolute Max Vin = 60V
5A
Total
2A
Total
1.65A
Total
10A
10
0A
10A
10A
7.5A
7.5
5A
4
3.3A
3.3A
2.75A
2.75A
2A
2A
1.65A
1.65A
0.9A
0.9A
MQHR(25W)
16-70V
16-80Vin
Absolute Max
5A
Total
2A
Total
1.65A
Total
Check witfactobility.
Product # MQFL-28VE-3R3S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005108 Rev. 1
04/23/09
Page 18
MQFL-28VE-3R3S
Curren
30A
ꢁechnical Specification
PART NUMBERING SYSTEM
The part numbering system for SynQor’s MilQor DC-DC converters follows the format shown he tabw.
Output Voltage(s)
Input
Model
ꢀame
Package Outline/
Pin Configuon
Scg
Gra
Voltage
Range
Single
Output
Dual
Output
1R5S
1R8S
2R5S
3R3S
05S
06S
7R5S
09S
28
28E
28V
28VE
Y
W
Z
H
MQFL
MQHL
MQHR
05D
12D
1
270
12S
15S
28
Exampe:
MQFL-28VE-3RES
APPLICATION NOTES
A variety of application notes and techhite papers cadownloaded ipdf format from the SynQor website.
PATENTS
SynQolds the followtents, one or of which mighply to this product:
5,999,4
6,927,987
22,742
09
6,545,80
7,072,1
6,509
7,085
,594,159
7,119,524
6,731,520
7,269,034
6,894,468
7,272,021
6,896,526
7,272,023
Contact SynQor further information:
Ph:
949-0600
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 F888-9596
:
978-849-0602
E:
We
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.
Addres155 Swanson Road
Boxborough, MA 01719
USA
Product # MQFL-28VE-3R3S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005108 Rev. 1
04/23/09
Page 19
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