MQFL-28VE-05S [SYNQOR]
HIGH RELIABILITY DC-DC CONVERTER; 高可靠性DC-DC转换器
| 型号： | MQFL-28VE-05S |
| 厂家： | 
SYNQOR WORLDWIDE HEADQUARTERS |
| 描述： | HIGH RELIABILITY DC-DC CONVERTER |
| 文件： | 总19页 (文件大小：1246K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MQFL-28VE-05S
Single Output
HI G H RELIABILITY DC-DC CONVERTER
16-70 V
5.5-80 V
5.0 V
20 A
89% @ 10A / 88% @ 20A
Continuous Input
Transient Input
Output
Output
ncy
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 environments.
Compatible with the industry standard format, these
converters operate at a fixed frequency, have
no opto-isolators, and follow conservative compnent
derating guidelines. They are designed and manufa
to comply with a wide range of military standards.
r
E
20A
MQFL-S-Y
C
DDC
28V
5.0V
n
Meets all -704 and -1275B under-voransients
Design Process
MQFL series converters are:
• Designed for reliability per NSO-P3641-A guideines
NED & MA N U F A C T U R E D IN T H E USA
O R -REL S S E M B L Y
EAL™ H
Q
S
I
A
• Designed with components r:
— MIL-HDBK-1547A
Features
— NAVSO P-3641A
Fixed witching frequency
o opto-isolators
• Parallel operation with current share
• Remote sense
• Clock synchronization
• Primary and secondary referenced enable
Qualificaroce
MQFL series convertqualifd to:
• MIL-S10F
— t with RTC0-160E
• SynQor’s le Qualification
• Continuous short circuit and overload protection
• Input under-voltage lockout/over-voltage shutdown
— consisteL-STD-883F
• SynQor’s Long-TeStorage abilificatio
• SynQor’s on-going life tes
Specification Compliance
In-Line Manuturing Process
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
• AS9100 and ISO 9000 certifed facility
• Full componceabili
• Tempere cyc
• DEF-STAN 61-5 (part 6)/5
• MIL-STD-461 (C, D, E)
• RTCA/DO-160E Section 22
• Constanleraon
• 24, 96, 16r burn-in
• Three level temre screening
Product # MQFL-28VE-05S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005208 Rev. 1
04/22/09
Page 1
MQFL-258.V0VE-05S
Output:
20A
Current:
Technical Specification
BLOCK DIAGRAM
BOOST
CONVERTER
SWITCHES
AND
REGULATION STAGE
ISOLAT
7
+Vout
CURRENT
SENSE
1
+Vin
CONTROL
2
8
INPUT
RETURN
OUTPUT
TURN
CASE
GATE DRIVERS
GATDRIVE
3
STABILITY
CURRENT
MIT
12
UVLO
ENABLE 2
4
MAGNE
ENABLE 1
11
PRIMARY
CONTROL
ARY
SHARE
5
SYNC OUT
DA
10
+ SENSE
6
SYNC IN
9
SENSE
BIAS POWER
CONTROL
POWER
A
TYPICAL CONTION DIAGRAM
1
12
11
10
9
ENA 2
open
means
on
nal bulk caor
2
4
5
6
IN RTN
SHARE
+ SNS
STABILITY
ENA 1
+
-
MQFL
RSTABILTY
LITY
+
-
Load
28 Vdc
- SNS
open
eans
n
8
SYNC OUT
SYNC IN
OUT RTN
+VOUT
7
Product # MQFL-28VE-05S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005208 Rev. 1
04/22/09
Page 2
MQFL-258.V0VE-05S
Output:
20A
Current:
Technical Specification
MQFL-28VE-05S ELECTRICAL CHARACTERISTICS
Parameter
Min. Typ. Max. Units Notes & Conditions
Group A
Subgroup
Vin=28V dc ±5%, Iout=20A, CL=0µF, free runnie Note 10)
boost-converter non-operational unless othe
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
uous
1, 2, 3
4, 5, 6
5.5
T, 1s; see Uner-Voltage Trasient P
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
Se
14.75 15.50 16.00
13.80 14.40 15.00
0.50
V
V
V
1, 2, 3
1, 2, 3
1, 2, 3
1.10
1.
Note 15
90.0
82.0
3.0
95.0
86.0
9.0
100.0
90.0
15.0
7.5
160
V
V
A
mA
mA
mA
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
Vin = 16V; Iout
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 = 25ºC)
Output Voltage Set Point Over Temperate
Output Voltage Line Regulation
Output Voltage Load Regulation
Total Output Voltage Range
Output Voltage Ripple and Noise Peak to Pea
Operating Output Current Ran
Operating Output Power Rang
Output DC Current-Limit ceptio
Short Circuit Output C
Back-Drive Current Limnabled
Back-Drive Current Limit abled
Maximum Output Capacitan
DYNAMIC RACTERISTI
Output Voation Load Tr
For a Pos. e in Load rent
For a Neg. SteLoad Current
Settling Time (eith
Output Voltage Deviaon Transient
For a Pos. SteChange Line Voltage
For a Neg. Step Change in Line Vtage
Settling Time (eitcase)
Turn-On Transient
25
80
Vin = 16V, 28V70V
Vin = 16V, 28V, 70V
Band= 100 kHz – 10
4.95
.92
-0
15
5.0
5.00
0
25
5.00
15
5.05
5.08
20
V
V
mV
mV
V
V
A
A
A
Vout at ss
1
2, 3
"
" ; Vin = 16; Iout=20A
" ; Vout@(Iout=0- Vout@(Iout=20A)
"
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
35
5.10
30
Bandwidth = 0MHz; CL=11µF
0
21
21
20
0
23
23
6
e Note
≤ 1.2V
10
50
10,000
See Note 6
-450
-
350
100
mV
mV
µs
Total Iout step = 10A‹-›20A, 2A‹-›10A; CL=11µF
4, 5, 6
4, 5, 6
4, 5, 6
0
"
See Note 7
Vin step = 16V‹-›50V; CL=11µF; see Note 8
-5
00
500
500
500
mV
mV
µs
"
"
4, 5, 6
4, 5, 6
See Note 5
2
See Note 7
Output Voltage Rise Time
Output Voltage Oversho
Turn-On Delay, Rising Vin
6
0
5.5
3.0
1.5
10
2
8.0
6.0
3.0
ms
%
ms
ms
ms
Vout = 0.5V-›4.5V
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 Delay, Rising ENA1
Turn-On Delay, RiNA2
EFFICIENCY
Iout = 20A (16)
TBD
TBD
TBD
TBD
TBD
TBD
TBD
88
90
88
89
87
88
85
14
16
%
%
%
%
%
%
%
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 = 10A
Iout = 20A (28V
Iout = 10A (28Vin
Iout = 20A (40Vin)
Iout = 10A (40Vin)
Iout = 20A (70Vin)
Load Fault Power Dissipatio
Short Circuit Power Dissipation
24
24
Iout at current limit inception point; See Note 4
Vout ≤ 1.2V
1, 2, 3
Product # MQFL-28VE-05S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005208 Rev. 1
04/22/09
Page 3
MQFL-258.V0VE-05S
Output:
20A
Current:
Technical Specification
MQFL-28VE-05S ELECTRICAL CHARACTERISTICS (Continued)
Parameter
Min. Typ. Max. Units Notes & Conditions
Group A
Subgroup
Vin=28V dc ±5%, Iout=20A, CL=0µF, free ru(see Note 10)
boost-converter non-operational unless od
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
44
500
550
600
kHz
1, 2, 3
Frequency Range
500
2.0
-0.5
20
600
10
0.8
80
kHz
V
V
%
1, 2, 3
Logic Level High
Logic Level Low
Duty Cycle
See Note 5
Synchronization Output
Pull Down Current
Duty Cycle
20
25
mA
%
UT = 0.8
Oected to SYNC IN of MQFL un
Seote 5
See Note 5
75
Enable Control (ENA1 and ENA2)
Off-State Voltage
Module Off Pulldown Current
On-State Voltage
Module On Pin Leakage Current
Pull-Up Voltage
V
µA
V
1, 2, 3
See Note 5
1, 2, 3
See Note 5
1, 2, 3
80
2
urrent drain required to module
20
4.5
draw from pin allowed wiule still on
See Figure A
3.2
4.0
BOOST-CONVERTER OPERATION
Input Voltage Arming Value
Switching Frequency
Input Terminal Current Ripple (RMS)
Total Converter Efficiency
Iout = 10A (10Vin)
17
600
18.8
740
k
A
1, 2, 3
1, 2, 3
1, 2, 3
Vin = 16V; Iout = 20A
85
7
8
%
%
%
1, 2, 3
1, 2, 3
1, 2, 3
Iout = 10A (16Vin)
Iout = 20A (16Vin)
RELIABILITY CHARACTERISTIC
Calculated MTBF (MIL-STD-217F2
GB @ Tcase = 70ºC
3
2200
390
TBD
0 Hrs.
3
AIF @ Tcase = 70ºC
Hrs.
Demonstrated MTBF
rs.
WEIGHT CHARACTERIST
Device Weight
79
Electrical Charactertes
1. Converter will undt over-shutdown.
2. Derate output power f rated wer at Tcase = 135ºC (see ).
3. High or low state of inpmuspersist for t 200µs to be aby the lockout or shutdown circuitry.
4. Current inception is dthe point whutput voltage hpped to 90% of its nominal value.
5. Paramsted but guad to the limit spe
6. Load curn time ≥ µs.
7. Settling time om start of tranhe point he otput voltage has returned to ±1% of its final value.
8. Line voltae tran100µs.
9. Input voltae rise tim250µs.
10. Operating te converr at a synchrn frbove the free running frequency will cause the converter’s efficiency to be slightly reduced
and it may also cuse a slight redtion in ximum t current/power available. For more information consult the factory.
11. SHARE pin outs a power faire warnindurinfault condition. See Current Share section of the Control Features description.
12. After a disable or fault event, module is inhim restarting for 300ms. See Shut Down section of the Control Features description.
13. Only the ES and HB grproducts are tested e temperatures. The C grade products are tested at one temperature. Please refer to the
Construction and EnviroStress Screening Opns table for details.
14. These derating curves r the ES- ad HB- grade products. The C- grade product has a maximum case temperature of 100ºC.
15. Input Over Voltage Shutdois run at no load, full load is beyond derating condition and could cause damage at 125ºC.
Product # MQFL-28VE-05S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005208 Rev. 1
04/22/09
Page 4
MQFL-258.V0VE-05S
Output:
20A
Current:
Technical Specification
Under-Voltage Transient Profile
Boost-Converter is armed when Vin
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 Profg when the bost-converter is guaranteed to bperational. The boost-converter must
first be armed by having V > VARMunder-voltage trsient can occur after a delay equal to four times the duration
IN
of the previous transient the boost-conis rearmed.
Note:
This Undoltage Tranofile is desigcomply (with propiate margins) with all initial-engagement surges, start-
ing or crltage trannts and under-vosurges pecified in:
• MIL-S(A through F)
• RTCA/DO-0E
• MIL-TD-1275B
• DEF-STAN 61-5 (part 6)/5 (opnal portions)
Product # MQFL-28VE-05S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005208 Rev. 1
04/22/09
Page 5
MQFL-258.V0VE-05S
Output:
20A
Current:
Technical Specification
TBD
TBD
Figure 1: Efficiency at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at Tcase=25°C.
Figurciency at nminal output ltage arated power
vs. case ure for nput voltage V, 28 V, 0 V.
TBD
Figure 3: Power din at notput voltage vs. load
current for minimum, and mum input voltage at
Tcase=25°C.
FiPower dissipation at nominal output voltage and 60% rated
power vs. case temperature for input voltage of 16 V, 28 V, and 40 V.
TBD
TBD
Figure 5: Output C/ Output Power derating curve as a
function of Tcase and mum desired power MOSFET junction
temperature at Vin = 28 ee Note 14).
Figure 6: Output voltage vs. load current showing typical current
limit curves.
Product # MQFL-28VE-05S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005208 Rev. 1
04/22/09
Page 6
MQFL-258.V0VE-05S
Output:
20A
Current:
Technical 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
(1 V/div). Ch 2: ENA1 (5 V/div).
Figurn-on transint at full resie load F outut
capacitated by ENA1. Input ve pre-aCh 1:
Vut (1 V/dENA1 (5 iv).
TBD
Figure 9: Turn-on tt at fule load and zero outpu
capacitance initiated . Inpuge pre-applied. Ch 1: V
(1 V/div). Ch 2: ENA2 (
F: Turn-on transient at full resistive load and zero output
capacitance initiated by Vin. ENA1 and ENA2 both previously high.
h 1: Vout (1 V/div). Ch 2: Vin (10 V/div).
TBD
TBD
Figure 11: Output response to step-change in load current
50%-100%-50% of Io)Load cap: 1µF ceramic cap and
10µF, 100mΩ ESR tantacap. Ch 1: Vout (200 mV/div). Ch 2:
Iout (10 A/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 (200 mV/div). Ch 2: Iout
(10 A/div).
Product # MQFL-28VE-05S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005208 Rev. 1
04/22/09
Page 7
MQFL-258.V0VE-05S
Output:
20A
Current:
Technical Specification
See Fig. 15
See Fig. 16
iC
MQME
Filter
Co
VOUT
TBD
VSOURCE
10
µ
W
F,
ESR
1 µF
cer
m
c
Figure 13: Output voltage response to step-change in input voltage
(16 V - 50 V - 16 V). Load cap: 10µF, 100mΩ ESR tantalum cap and
1µF ceramic cap. Ch 1: Vout (200 mV/div). Ch 2: Vin (20 V/div).
Figurst set-up digram showinmeasuroints fo
Input Tipple Crrent (Figure nd Outtage
Rpple (Fi
TBD
Figure 15: Input teurrent c, at full rated output
current and nominal age wiQor MQ filter module
(50 mA/div). Bandwidth. See gure 14.
FiOutput voltage ripple, Vout, at nominal input voltage and
rated load current (20 mV/div). Load capacitance: 1μF ceramic capacitor
nd 10μF tantalum capacitor. Bandwidth: 10 MHz. See Figure 14.
TBD
TBD
Figure 17: Rise of voltage after the removal of a short circuit
across the output termh 1: Vout (1 V/div). Ch 2: Iout (10 A/div).
Figure 18: SYNC OUT vs. time, driving SYNC IN of a second SynQor
MQFL converter. Ch1: SYNC OUT: (1 V/div).
Product # MQFL-28VE-05S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005208 Rev. 1
04/22/09
Page 8
MQFL-258.V0VE-05S
Output:
20A
Current:
Technical Specification
TBD
TBD
Figure 19: Magnitude of incremental output impedance
(Zout = vout/iout) for minimum, nominal, and maximum input voltage
at full rated power.
Figuragnitude of ncremental fward traon
(FT = vor minium, nominal, maximut
vltage at wer.
TBD
F2: Magnitude of incremental input impedance
(Zin = vin/iin) for minimum, nominal, and maximum input
ltage at full rated power.
Figure 21: Magnitucremenrse transmission (RT =
iin/iout) for minimuml, and um input voltage at full
rated power.
TBD
TBD
Figure 23: High frconducted emissions of standalone
MQFL-28-05S, 5Vout at 120W output, as measured with
Method CE102. Limit lihown is the ‘Basic Curve’for all
applications with a 28V source.
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.
Product # MQFL-28VE-05S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005208 Rev. 1
04/22/09
Page 9
MQFL-258.V0VE-05S
Output:
20A
Current:
Technical Specification
The MQFL converter’s control circuit does not implement an output
over-voltage limit or an over-temperature shutdown.
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 describe the d operation of addi-
tional control features providy the onverter.
UNDER-VOLTAGE TRIENS
The MQFL-28VE sries of DC/DC conincorporate a special
“boost-convertee thpermits the onverters to deliver full
power through trwhere its nput voltage falls to as low as
5.5V. Noally, thconveris non-o, and the
converter’s input voltassed directly to its n
stag(see the Block DiagWhen an under-voltage tra
occthe boost-converter ecomes opnal, and it steps-up
the iltage to a alue greater han 1hat the nominal
output can be ustained.
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 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 out
the converter have a fundamental ripple frequency of about
kHz in the free-running mode.
It is important to note thae boosrter ste must first
me “armed” before it come opnal. This “arming”
en the conver’s inpage exceeds approximately
18V. boost-coerter then bs operational whenever
the input voltage below the voltage, and it will
remain operatinal aas the inpt voltage remains within
e region shown in ther-Voltage Transient Profile Page.
If the involtage drops this transient profile, the boost-
converteis not guarand to continue operating (it may,
but it will prelf from excessive stresses). Once the boost-
nverter stops g, the converter’s input voltage will be
reconnected directly the input of the pre-regulator stage. The
output voltage will therefore collapse unless the input voltage is
16V, or greater
Rectification of the isolation stage’s output is aclished with
synchronous rectifiers. These devices, which are with a
very low resistance, dissipate far less energy than woy
diodes. This is the primary reason why thMQFL converte
such high efficiency, particularly at low otput voltags.
Besides improving efficiency, thynchronous rectifies permit
operation down to zero load cre is no longea need
for a minimum load, as is typical for hat use diodes for
rectification. The synchronous rectifiers actrmit a negative
load current to flow back ionverter’s outpt terminalf the
load is a source of rt or loenergy. The MQFrt-
ers employ a “baurrent o keep this negative o
terminal current smal
: the oost-converter will not become re-armed for the
nnsient unless the input voltage once again exceeds
approximately 18V.
transient profile shown on the Under-Voltage Transient Profile
age 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 ntrol circuit oe input and osides of the
MQFL cat determine conduction state powe
switches. Thecommunicate wih other s the
isolation barrier thagnetically coudevice. o-
isolators are sed.
• MIL-STD-704-8 (A through F)
• RTCA/DO-160E
• MIL-STD-1275B
A separate bias supply providpower h the t and out-
put control circus. Among other things, ts suply permits
the converter to operate ndefinitely into a circuit and to
avoid a hiccup mode, nder a tough startp 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 under-voltge lockoure withysteresis is provided,
as well as an iover-vshutdown. There is also
an output ent lithat is arly constant as the load
impedance ses o a short circuit (i.e., there is not fold-
back or fold-forharacteristic to the output current under this
condition). When fault is removed, the output voltage rises
exponentially to its novalue 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-05S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005208 Rev. 1
04/22/09
Page 10
MQFL-258.V0VE-05S
Output:
20A
Current:
Technical 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 hold-up
capacitor would be a good starting point. The exact amount of
capacitance required depends on the application (source i
tance, load power, rate of fall of the source voltage, etc).
consult the factory if further assistance is required.
when the converter is inhibited through the ENA1 pin, the bias
supply is also turned off, whereas this supply remains on when
the converter is inhibited through tA2 pin. A higher input
standby current therefore results in thase.
Both enable pins are interulled o that an open
connection on both pins will the cverter. Figure A
shows the equivalent circuit lookieitheenable pins. It is
TTL compatible.
.6V
82K
1N4
P
(or P
ENABE
TO ENABLE
CIRCTRY
25K
2N3904
PIN
(or PIN 8)
IN
Because input system stability is harder to maintaas the input
voltage gets lower, the MQFL-28VE series conversigned
to give external access to the voltage node between tn-
verter and the pre-regulator stages. This access, at the “STA
pin (pin 3), permits the user to add a bilizing buk capac
with series resistance to this node. Since the voltage athis node
stays above 16V, the amount of pacitane required is much
less than would be required on rter’s input pinwhere
the voltage might drop as low as 5.ommended that a
22µF capacitor with an ESR of about 1W ected between
the STABILITY pin and the IETURN pin (pi2). Withothis
special connection the intee of the converter, µF
stabilizing bulk cwould been required acros
converter’s input pins
gure A: Equivalnt cirking into either the ENA1 or ENA2
pins with spect to its correng return pin.
SHUT DOWMQFL converter will shut down in response
tonly four conENA1 input low, ENA2 input low, VIN
input below under-voe lockout threshold, or VIN input above
over-voltage shutdown threshold. Following a shutdown event,
there is a startuinhibit delay which will prevent the converter
m restartig for approximately 300ms. After the 300ms delay
es, if te enable inputs are high and the input voltage is
wie operating range, the converter will restart. If the VIN
input is brought down to nearly 0V and back into the operating
nge, there is no startup inhibit, and the output voltage will rise
cording to the “Turn-On Delay, Rising Vin” specification.
Another antage of the Y pin is that ides a volt-
age sourys above 1hen the under-voransien
occurs. This urce might be usr other ry 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 FEATURES
ENABLE: The MQFL conerter has two enins. Both must
have a logic high levethe converter to be nabled. A logic
low on either pin will inhconverter.
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 pin (prefereith respect to the converter’s
input return in 2). ENA2 in 12) is referenced with
respect to verteoutput return (pin 8). This permits the
converter to be ited from either the input or the output side.
Regardless of whicis used to inhibit the converter, the
regulation and the ison stages are turned off. However,
Product # MQFL-28VE-05S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005208 Rev. 1
04/22/09
Page 11
MQFL-258.V0VE-05S
Output:
20A
Current:
Technical 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 circuit looking into the SYNC IN
pin. Figure C shows the equivalent circuit looking 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
RCUITRY
N
IN RTN
5K
PIN 2
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 600 kHz
range. The boost-converter stage is free-running at about 670
kHz while it is operational, and is not affected by synchrona-
tion signals. A pulse train at the desired frequency sho
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 belw 0.8V to be
guaranteed to be interpreted as a logic low, agh value
should be above 2.0V to be guaranteed to be ints a
logic high. The transition time between the two states s
less than 300ns.
Fig: Equivalent crcuit looking into tC IN pin with
respee IN RTN (put return) .
5
5K
NC OUT
FROM SYNC
CIRCUITRY
PIN 5
IN RTN
PIN 2
OPEN CO
OUTPU
If the MQFL converter is not to be schronied, the SYNC IN pin
should be left open circuit. The er will then opere in its
free-running mode at a frequency mately 550 kHz.
igure C: Equivuit looking into SYNC OUT pin with
resct to the IN TN ut return) pin.
CURRENT SHAE: When several MQFL converters are placed
parallel tachieve either a higher total load power or N+1
dancy, their SHARE pins (pin 11) should be connected
togThe voltage on this common SHARE node represents the
average current delivered by all of the paralleled converters. Each
nverter monitors this average value and adjusts itself so that its
tput current closely matches that of the average.
If, due to a fault, the SYNN pin is held er a logic low
or logic high state continue MQFL converter wivert
to its free-running ency.
The MQFL converter as a C OUT pin (pin 5). Th
output can be used to dSYNIN pins many as ten
(10) othFL convertersulse train comt of SYNC
OUT has cle of 50% nd a frequency thahes the
switching freqhe converter wh it is ated.
This frequecy is free-runng frency if theo
synchronization signat the SYNpin, ynchrniza-
tion frequency f there is.
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 is available only we voltage at the
STABILITY pin (pin 3) bove approximate2V and when
the converter is not inhthrough the ENA1 pin. An inhibit
through the ENA2 pin will rn the SNC 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 MQFL cter thas SYNC IN pin driven by
the SYNC pin second MQFL converter will have its
start of its swg cycle delayed approximately 180 degrees
relative to that osecond converter.
Product # MQFL-28VE-05S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005208 Rev. 1
04/22/09
Page 12
MQFL-258.V0VE-05S
Output:
20A
Current:
Technical 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
1,000
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:
0
0.1
0.3
0.4
0.5
ncꢂease in
Vnom
Rtrim = 100 x
[
Vout – Vnom – 0.025
]
where:
Figurput Voltge Trim Grap
Vnom = the converter’s nominal output voltage,
Vout = the desired output voltage (greater than Vnom), and
Rtrim is in Ohms.
INPUT UNDER-VOLTACKOe MQFL converter
nder-voltage lockout fthat enshe converter will
be input voltage is too This lockout only appears
when the boost-coer is not opeThe threshold of input
voltage at whicthe rter will turn is higher that the thresh-
at which it ill turn addition, the MQFL converter will
not respond to a state of tut voltage unless it has remained
in that or more than a200µs. This hysteresis and the
delay ensuer operation when the source impedance is high
or in a noisy eent.
As the output voltage is trimmed up, it produces a greater voltage
stress on the converter’s internal components and may cause the
converter to fail to deliver the desired output vt the low
end of the input voltage range at the higher end ocur-
rent and temperature range. Please consult the factory fo
Factory trimmed converters are availablby request.
INPUT OVER-VOLTGE SHUTDOWN: The MQFL converter
also has an over-voltage feature that ensures the converter will be
ff if the input voage is too high. It also has a hysteresis and time
y to ensre proper operation.
12
VIN
ENA 2
2
3
5
6
11
ernal bulk cpacitor
RSTABILITY
TN
SHARE
10
STABILITY
ENA 1
+SNS
+
28 Vdc
RTRIM
MQFL
9
-SNS
8
me
on
SYNC OUT
SYNC IN
OUT RTN
Load
7
+VOUT
CSTABILITY
+
Figure D: Typical conn for output voltage trimming.
Product # MQFL-28VE-05S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005208 Rev. 1
04/22/09
Page 13
MQFL-258.V0VE-05S
Output:
20A
Current:
Technical Specification
The Mil-HDBK-1547A component derating guideline calls for
a maximum component temperature of 105ºC. Power Derating
Curve figure; therefore has one porating curve that ensures
this limit is maintained. It has been ’s extensive experi-
ence that reliable long-term rter ocan be achieved
with a maximum componenrature 5ºC. In extreme
cases, a maximum temerature ºC is missible, but not
recommended for long-term operhere high reliability is
required. Deratincurves for these hemperatue limits are
also included i. Thaximum cse temperature at which
the converter shoperated i135ºC.
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.
When the converter is d on a metal plateill
help make the convertese bottom a uniform tempe
How ll it does so depends on the ths of the plate and
on tmal conduance of the nterfar (e.g. thermal
greasal pad, c.) between case aplateUnless
this is dowell, it is iportato misthe plate’s
temperature for the maximcase tature. is easy for
be as much as 5-10ºrent at ower and at high
es. It is suggsted tthermocouple be attached
directly to the coner’s case thrsmall hole in the plate
when investigating hot the convis getting. Care must
lso be made tensurthere is not a large thermal resistance
between the thermocouplthe case due to whatever adhesive
might bed to hold the thouple in place.
To avoid any problems that might arise due to back-drive current,
the MQFL converters limit the negative current that the converter
can draw from its output terminals. The threshold for this bk-
drive current limit is placed sufficiently below zero so that t
verter may operate properly down to zero load, but its absolute
value (see the Electrical Characteristics page) is small compared
to the converter’s rated output current.
THERMAL CONSIDERATIONS: Figure 5 shows sted
Power Derating Curves for this converter as a functi
case temperature, input voltage and the aximum desired
MOSFET junction temperature. All other components within te
converter are cooler than the hotteMOSFT.
INPUT SYINSTABILITY: This condition can occur
ecause any Dconverter appears incrementally as a
negative resistance d. A detailed application note titled
“Input System Instability” is available on the SynQor website
which provides n understanding of why this instability arises,
d shows he preferred solution for correcting it.
Product # MQFL-28VE-05S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005208 Rev. 1
04/22/09
Page 14
MQFL-258.V0VE-05S
Output:
20A
Current:
Technical Specification
CONSTRUCTION AND ENVIRONMENTAL STRESS SCREENING OPTIONS
ES-Gꢂade
(-55 ºC to +125 ºC)
(Element Evaluation)
-Gꢂade
(-525 ºC)
Elemetion)
Consistent with
MIL-SꢁD-883F
C-Gꢂade
(-40 ºC to +100 ºC)
Scꢂeening
Inteꢂnal Visual
Yes
ꢀo
Yes
Yes
*
ConditioB
(-55 ºC to 125 ºC)
on
(-65 50 ºC)
ꢁempeꢂatuꢂe Cycle
Method 1010
Constant
Acceleꢂation
Method 2001
(Y1 Diꢂection)
Conition A
(5000g)
ꢀo
5
Method 1015
Load Cycled
Buꢂn-in
• 10s period
24 Hꢂs @ +125 ºC
96 Hꢂs @ +125 ºC
160 Hꢂs 125 ºC
• 2s @ 100% Load
• 8s @ 0% Load
Method 5005
(Gꢂoup A)
Final Electꢂical ꢁest
+25 ºC
00 ºC
Full QoꢂSeal
-55125 ºC
QoꢂSeal
Mechanical Seal,
ꢁheꢂmal, and Coating
Pꢂocess
Full QoꢂS
Exteꢂnal Visual
2009
es
Yes
*
Constꢂuction Pꢂocess
l
QoꢂSeal
QoꢂSeal
* Pꢂ IPC-A-610 (rev. D) Class 3
MilQor converters and filters are offevariations of coruction technique and environmental stress screening options. The
three highest grades, C, ES, and HB, all use r’s proprietary eal™ Hi-Rel assmbly process that includes a Parylene-C coating
of the circuit, a high perfohermal compound fillernd a narrier gd plated aluminum case. Each successively higher
grade has more strnt meand electrical testiwell anger burn-in cycle. The ES- and HB-Grades are also con-
structed of compoat have procured through an nt evaluprocess that pre-qualifies each new batch of devices.
Product # MQFL-28VE-05S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005208 Rev. 1
04/22/09
Page 15
MQFL-258.V0VE-05S
Output:
20A
Current:
Technical Specification
0.093
[2.36]
0.250 [
[5.08]
+VIN
ENA 2
1
12
IN RTN
SHARE
2
11
1.50 [38.10]
STABILITY
+SNS
-SNS
3
4
5
6
10 1.260
MQFL-28VE-05S-X-HB
DC-DC CONVERTER
28Vin 5.0VVout @ 20A
T-CU.
[32.00]
ENA 1
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]
0.050 [1.27]
0.20 [5.5
128 [3.25]
2.96 [75.2]
0.228 [
0 [9.91]
ase X
0.093
[2.36]
0.250
+VIN
1
12
11
0.200 [5.08]
TYP. NON-CUM.
IN RTN
STABILITY
SHRE
2
3
4
5
6
1.5]
+SNS
S
10 1.260
MQFL-28VES-U-HB
DC-DC CONVER
28Vin 5.0VVo
.00]
ENA 1
9
OUT RTN
+VOUT
SYNC OUT
SYNC IN
DE IN USA
0.040 [1.02]
PIN
S/N 0000000 D/C 3205-30
0.42
[10.7]
.50]
2.710]
3.00 [20]
0.050 [1.27]
0.220 [5.59]
3.25]
0 [71.1]
Case U
0.390 [9.91]
NOTES
PIN DESIGNATIONS
1)
2)
Pins 0.040” (1.02mm) ameter
Pin Function
Pin Function
Pins Material: Copper
Finish: Gold over Nickel
1
2
3
4
5
6
Positive input
Input return
Stability
7
8
9
Positive output
Output return
- Sense
3)
All dimensioes (mmances: x.xx +/-0.02 in. (x.x +/-0.5mm)
x.xxx +/.010 ix +/-0.
4)
5)
6)
Weigh(78.5 typical
Enable 1
10 + Sense
11 Share
Workmanshts or exceeds IPC-A-610C Class III
Print Labeling ourface per Product Label Format Drawing
Sync output
Sync input
12 Enable 2
Product # MQFL-28VE-05S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005208 Rev. 1
04/22/09
Page 16
MQFL-258.V0VE-05S
Output:
20A
Current:
Technical Specification
0.300 [7.62]
1.15 [29.21]
0.140 [3.56]
0.250 [6.35]
TYP
0.250 [6.35]
1
2
3
4
5
6
+VIN
12
11
10
9
ENA 2
.200 [5
NON-.
2.00
[50.80]
IN RTN
STABILITY
SHARE
MQFL-28VE-05S-Y-HB
DC-DC CONVERTER
28Vin 5.0VVout @ 20A
+SNS
-SNS
1.50
[38.10]
ENA 1
OUT RTN
+VOUT
SYNC OUT
SYNC IN
MADE IN USA
8
1.750
[44.45]
S/N 0000000 D/C 3205-301 CAGE 1WX10
7
0.040 [1.0
PIN
0.050
0.220
1.750 [44.45]
2.50 [63.50]
0.375 [9.52]
2.96 [75.2]
0.228 [5.79]
Case Y
se Z
(vaY)
Case W
(variant of Y)
0.6.35]
0.250 [6.35]
0.200 [5.08]
0.20[5.08]
YP. NON-CUM.
TYP. NON-CUM.
0.040 [1.2]
PIN
0.040 [1.02]
PIN
0.420 [10.7]
0.050 [1.27]
0.220 [5.59]
0.220 [5.59]
0 [1.27]
0.36 [9.2]
2.80 [71.1]
0.525 [13.33]
0.390
[9.91]
0.390
[9.91]
[13.3
2.80 [71.1]
PIN DESIGNATIONS
Pin Function Pin Function
NOTES
1)
Pins 0.040” (1.02mm) d
2)
Pins Material: er
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: Gold ovl plate
All dims in in(mm) Tolnces: x.xx +/-0.02 in. (x.x +/-0.5mm)
x.xxx +in. (x +/-0.25mm)
Weight: 2.8 .5 g) typical
Workmanship: r exceeds IPC-A-610C Class III
Print Labeling on ace per Product Label Format Drawing
3)
4)
5)
6)
10 + Sense
11 Share
12 Enable 2
Product # MQFL-28VE-05S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005208 Rev. 1
04/22/09
Page 17
MQFL-258.V0VE-05S
Output:
20A
Current:
Technical Specification
MilQor Converter FAMILY MATRIX
The tables below show the array of MQFL converters available. When ordering SynQor converterse ensure that you use
the complete part number according to the table in the last page. Contact the factory for other equire
Single Output
Output †
28V
1.5V
1.8V
2.5V
3.3V
5V
6V
7.5V
9V
12V
(12S)
(15S)
5V
2V
12D)
±15V
(15D)
Full Size
(1R5S) (1R8S) (2R5S) (3R3S) (05S)
(06S) (7R5S) (09S)
(28S)
MQFL-28
16-40Vin Cont.
Ttal
10A
Total
8A
Ttal
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
17A
20A
16A
16A
13A
13A
16A
13A
13A
11A
1
A
8A
A
8
4A
A
16-50Vin 1s Trans.*
Absolute Max Vin = 60V
MQFL-28E
16-70Vin Cont.
16-80Vin 1s Trans.*
Absolute Max Vin =100V
24A
Total
Total
MQFL-28V
16-40Vin Cont.
5.5-50Vin 1s Trans.*
Absolute Max Vin = 60V
20
Total
A
.5A
Totl
6A
6.5A
8A
3.3A
A
4A
MQFL-28VE
16-70Vin Cont.
5.5-80Vin 1s Trans.*
Absolute Max Vin = 100V
8A
Total
6.5A
Total
MQFL-270
155-400Vin Cont.
155-475Vin 0.1s Trans.*
Absolute Max Vin = 550V
24A
al
10A
Total
8A
Total
10A
Single Ouput
Dual Output †
V
1.5V
1.8V
2.5V
3.3V
V
7.5
9V
12V
(12S)
15
(15S)
±5V
(05D)
±12V
(12D)
±15V
(15D)
Half Size
(1R5S) (1R8S) (2R5S) (3R3S) (05
(7R5S) (09
MQHL-28 (50W)
16-40Vin Cont.
16-50Vin 1s Trans.*
Absolute Max Vin = 60V
10A
Total
4A
Total
3.3A
Total
20A
20A
20A
2
20A
15A
15A
0A
10A
8
8A
6.6A
6.6A
5.5A
5.5A
4A
3.3A
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
10A
10A
10A
7.5A
7.5A
5A
5A
4A
4A
A
2.75A
2.75A
2A
2A
1.65A
1.65A
0.9A
0.9A
MQHr-28E (25W)
16-70Vin Cont.
16-80Vin 1s Trans.*
Absolute Man =100V
5A
Total
2A
Total
1.65A
Total
Check wy for availabi
Product # MQFL-28VE-05S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005208 Rev. 1
04/22/09
Page 18
MQFL-258.V0VE-05S
Output:
20A
Current:
Technical Specification
PART NUMBERING SYSTEM
The part numbering system for SynQor’s MilQor DC-DC converters follows the format shown in the table below.
Output Voltage(s)
Input
Model
ꢀame
Package Outline/
Pin Configuration
ening
e
Voltage
range
Single
Output
Dual
Output
1r5S
1r8S
2r5S
3r3S
05S
06S
7r5S
09S
28
28E
28V
28VE
U
X
C
S
MQFL
MQHL
MQHr
05D
12D
15D
270
12S
15S
28S
Example:
FL-28VE-0S-Y-ES
APPLICATION NOTES
A variety of application notes hnical white pars can be downloaded in pdf at 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
6,545,890
072,190
77,109
7146
6,59
7,11524
6,731,520
7,269,034
6,894,468
7,272,021
6,896,526
7,272,023
Contact SynQor for further inmaton:
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
979-0602
E-mail
:
mqnb@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.
Ads: 155 Swanson Road
Boxborough, MA 01719
USA
Product # MQFL-28VE-05S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005208 Rev. 1
04/22/09
Page 19
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