MQFL-28VE-28S-U-HB [SYNQOR]
DC-DC Regulated Power Supply Module, 1 Output, 100W, Hybrid, MODULE-12;
| 型号： | MQFL-28VE-28S-U-HB |
| 厂家： | 
SYNQOR WORLDWIDE HEADQUARTERS |
| 描述： | DC-DC Regulated Power Supply Module, 1 Output, 100W, Hybrid, MODULE-12 转换器 DC-DC转换器 |
| 文件： | 总19页 (文件大小：1198K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MQFL-28VE-28S
Single Output
HI G H RELIABILITY DC-DC CONVERTER
16-70V
5.5-80V
28V
3.3A
89% @ 1/ 88% @ 3.3A
Continuous Input
Transient Input
Output
Output
Efy
FU L L PO W E R OP E R A T I O N : -55ºC TO +12C
®
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 comp
derating guidelines. They are designed and manufactured
to comply with a wide range of military standards.
-HB
rꢁ
VE
3.3
ME-28S-
@
DC/DC
28Vin
Meets all -704 and -1275B under-voltsients
Design Process
MQFL series converters are:
• Designed for reliability per NP3641-A guidelis
D
F
& MA N U F A C T U R E D IN T H E USA
E T O R -REL S S E M B L Y
EAL™ H
Q
S
I
A
• Designed with components dera
— MIL-HDBK-1547A
Features
— NAVSO P-3641
xed switching frequency
• opto-isolators
• Parallel operation with current share
Remote sense
• Clock synchronization
• Primary and secondary referenced enable
Qualificatiocess
MQFL series converters lifieto:
• MIL-S
— coth RTCA/0-160E
• SynQor’s Firsualification
• Continuous short circuit and overload protection
• Input under-voltage lockout/over-voltage shutdown
— consstent i-STD-883
• SynQor’s Long-Term Storage Surity Qution
• SynQor’s on-oing life test
Specification Compliance
In-Line Manufring 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 9001:certifiefacility
• Full component bility
• Temperayclin
• DEF-STAN 61-5 (part 6)/5
• MIL-STD-461 (C, D, E)
• RTCA/DO-160E Section 22
• Constant action
• 24, 96, 160 hrn-in
• Three level temperscreening
Product # MQFL-28VE-28S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005099 Rev. 1
04/22/09
Page 1
MQFL-28VE-28S
Curren
3.3A
ꢁechnical Specification
BLOCK DIAGRAM
BOOST
REGULATION STAGE
ISOLATIO
CONVERTER
SWITCHES
AND
7
+Vout
CURRENT
SENSE
1
+Vin
CONTROL
2
8
INPUT
RETURN
OUPUT
RETURN
CASE
GATE DRIVERS
GATE DRIV
3
STABILITY
CURRENT
LIMIT
12
UVLO
ENABLE 2
4
MAGNETIC
ENABLE 1
11
PRIMARY
CONTROL
DARY
L
SHARE
5
SYNC OUT
DNG
10
+ SENSE
6
SYNC IN
9
SENSE
BIAS POWER
CONTROL
POWER
TYPICAL COCTIODIAGRAM
12
11
10
9
N
ENA 2
open
means
on
al bulk capitor
2
4
5
6
IN TN
SHARE
+ SNS
STABILITY
ENA 1
+
-
MQFL
RSTABLITY
BILITY
+
-
Load
28 Vdc
- SNS
open
means
n
8
SYNC OUT
SYNC IN
OUT RTN
+VOUT
7
Product # MQFL-28VE-28S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005099 Rev. 1
04/22/09
Page 2
MQFL-28VE-28S
Curren
3.3A
ꢁechnical Specification
MQFL-28VE-28S ELECTRICAL CHARACTERISTICS
Parameter
Min. Typ. Max. Units Notes & Conditions
Group A
Subgroup
Vin=28V dc ±5%, Iout=3.3A, CL=0µF, free running (see Note 10)
boost-converter non-operational unless otherwise specified
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
ontinuous
1,
4, 5, 6
5.5
nsient, 1s; see Under-ltage Tranofile
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
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 Temperature
Output Voltage Line Regulation
Output Voltage Load Regulation
Total Output Voltage Range
Output Voltage Ripple and Noise Pea
Operating Output Current Range
Operating Output Power Range
Output DC Current-Limit In
Short Circuit Output Current
Back-Drive Current Lihile En
Back-Drive Current e Disa
Maximum Output Cap
DYNAMIC CHARACTER
Output Voltage Deviation Loent
ote 3
14.75 15.50 16.00
13.80 14.40 15.00
0.50
V
V
V
12, 3
12, 3
1, 2, 3
1.10
1.80
See Not
90.0
82.0
3.0
95.0
86.0
9.0
15.0
7.5
160
5
A
mA
mA
m
m
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
V16V; Iout 3.3A
110
Vin = 16V, 8V,
Vin = 16V, 2V, 70V
Bandwidth = 100kHz z; see Figure 14
50
0
27.72 8.00
27.60 200 28.4
V
V
mV
m
V
mV
A
A
Vose leads
1
2, 3
"
-20
120
0
135
20
150
" ; Vin 8V, 70V; Iout=3.3A
" ; Vout @ A) - Vout @ (Iout=3.3A)
"
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
2.44 28.00 28.56
30
100
3.3
100
.5
Bandwidth = 10 M; CL=11µF
3.5
3.8
4
1
10
See Not4
Vout ≤ 12V
3,0
mA
µF
See Note 6
Total Iout step = 1.65A‹-›3.3A, 0.33A‹-›1.65A;
For a Change in Loent
-1200
m
4, 5, 6
CL=11µF
For a Negge in Load urrent
Settling Time
Output Voltae DeviTransient
For a Pos. Sep CangLine Volta
For a Neg. Stp Change in Line Voltag
Settling Time (ither case)
Turn-On Transient
50
1200
0
mV
µs
"
4, 5, 6
4, 5, 6
See Note 7
Vin step = 16V‹-›50V; CL=11µF; see Note 8
-0
-800
0
800
500
mV
mV
µs
"
"
4, 5, 6
4, 5, 6
See Note 5
See Note 7
Output Voltage ise Time
Output Voltage Overshoo
Turn-On Delay, Rising
Turn-On Delay, Rising EN
Turn-On Delay, Rising ENA2
EFFICIENCY
6
0
5.5
3.0
1.5
10
2
8.0
6.0
3.0
ms
%
ms
ms
ms
Vout = 2.8V-›25.2V
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
Iout = 3.3A (16Vin)
TBD
TBD
TBD
TBD
TBD
TBD
TBD
88
90
88
89
87
88
84
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
1, 2, 3
Iout = 1.65A Vin)
Iout = 3.3A
Iout = 1.65A (2
Iout = 3.3A (40Vi
Iout = 1.65A (40Vin
Iout = 3.3A (70Vin)
Load Fault Power Dissipat
Short Circuit Power Dissipation
24
24
Iout at current limit inception point; See Note 4
Vout ≤ 1.2V
Product # MQFL-28VE-28S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005099 Rev. 1
04/22/09
Page 3
MQFL-28VE-28S
Curren
3.3A
ꢁechnical Specification
MQFL-28VE-28S ELECTRICAL CHARACTERISTICS (Continued)
Parameter
Min. Typ. Max. Units Notes & Conditions
Group A
Subgroup
Vin=28V dc ±5%, Iout=3.3A, CL=0µF, free running (see Note 10)
boost-converter non-operational unless otherwcified
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
%
2, 3
1
Logic Level High
Logic Level Low
Duty Cycle
See Note 5
Synchronization Output
Pull Down Current
Duty Cycle
20
25
mA
%
OUT = 0.8V
Onected tSYNC IN of oMQFL u
SeNote 5
See ote 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
0.8
V
A
V
1, 2, 3
See Note 5
1, 2, 3
See Note 5
1, 2, 3
80
2
Current drain required tmodu
20
4.5
draw from pin owed wdule still on
gure A
3.2
4.0
BOOST-CONVERTER OPERATION
Input Voltage Arming Value
Switching Frequency
Input Terminal Current Ripple (RMS)
Total Converter Efficiency
Iout = 1.65A (10Vin)
17.5
60
.0
18.8
740
V
kH
A
1, 2, 3
1, 2, 3
Vin = 16V; Iot = 3.3
85
7
8
%
%
%
1, 2, 3
1, 2, 3
1, 2, 3
Iout = 1.65A (16Vin)
Iout = 3.3A (16Vin)
RELIABILITY CHARACTERISTICS
Calculated MTBF (MIL-STD-217F2)
GB @ Tcase = 70ºC
3
2200
390
TBD
0 Hrs.
3
AIF @ Tcase = 70ºC
0 Hrs.
Demonstrated MTBF
Hrs.
WEIGHT CHARACTERIST
Device Weight
79
Electrical Characteristiotes
1. Converter will undut overshutdown.
2. Derate output poweof rateer at Tcase = 135ºC (see 5).
3. High or low state of ine musrsist for abot 200µs to be n by the lockout or shutdown circuitry.
4. Current limit inception is s the oint where output voltage ed to 90% of its nominal value.
5. Paramettested but guto the limit sp
6. Load cition time ≥
7. Settling timfrom staof transienthe pointhe out voltage has returned to ±1% of its final value.
8. Line voltage tr≥ 100µs.
9. Input voltae rise µs.
10. Operating te convertt a synchron freenabove tfree running frequency will cause the converter’s efficiency to be slightly reduced
and it may also cuse a slight reduction iaximut current/power available. For more information consult the factory.
11. SHARE pin oututs a power faire warne duriault condition. See Current Share section of the Control Features description.
12. After a disable ault event, module is inhrom rarting for 300ms. See Shut Down section of the Control Features description.
13. Only the ES and HB grade products are testee temperatures. The C grade products are tested at one temperature. Please refer to the
Construction and Environml Stress Screening Optable for details.
14. These derating curveor the ES- and HB- gade products. The C- grade product has a maximum case temperature of 100ºC.
15. Input Over Voltage Shutdt is run at no load, full load is beyond derating condition and could cause damage at 125ºC.
Product # MQFL-28VE-28S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005099 Rev. 1
04/22/09
Page 4
MQFL-28VE-28S
Curren
3.3A
ꢁechnical 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 Profilwing when the bot-converter guaranteed erational. The boost-converter must
first be armed by having V > w under-voltage trnsient can occur after a delay equal to four times the duration
IN
of the previous transient if the boost-cr is rearmed.
Note:
This Under-Voltage Trarofie is desigo comply (witopiate margins) with all initial-engagement surges, start-
ing or cvoltage trats and under-vsurges spefied in:
• MIL-8 (A through F
• RCA/DO-E
• MILSTD-1275B
• DEF-TAN 61-5 (part 6)/5 (oonal ortions)
Product # MQFL-28VE-28S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005099 Rev. 1
04/22/09
Page 5
MQFL-28VE-28S
Curren
3.3A
ꢁechnical Specification
T
TBD
Figure 1: Efficiency at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at Tcase=25°C.
FiguEfficiency at nminal output voltag0% rated power vs.
case ture for inpvoltage of 1, 28V,
TBD
D
Figure 3: Power dissipation at output voltage vs. load nt
for minimum, nominmaximt voltage at Tcase=25
e 4: Powr dissipation at nominal output voltage and 60% rated
p. 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 / Output Power derating curve as a
function of Tcase and ximum desired power MOSFET junction
temperature at Vin = 28Note 14).
Product # MQFL-28VE-28S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005099 Rev. 1
04/22/09
Page 6
MQFL-28VE-28S
Curren
3.3A
ꢁechnical Specification
TBD
T
Figure 7: Turn-on transient at full resistive load and zero output
capacitance initiated by ENA1. Input voltage pre-applied. Ch 1:
Vout (5V/div). Ch 2: ENA1 (5V/div).
FiguTurn-on transient at ll resistive ld 10mF output
capainitiated by NA1. Input vtage ped. Ch 1:
Vout (5Ch 2: EN1 (5V/div).
D
TBD
e 10: Tun-on transient at full resistive load and zero output
cnce initiated by Vin. ENA1 and ENA2 both previously high.
Ch 1: Vout (5V/div). Ch 2: Vin (10V/div).
Figure 9: Turn-on transent at ve load and zero outpu
capacitance initiated A2. Inge pre-applied. Ch 1
Vout (5V/div). Ch 2: /div).
TBD
TBD
Figure 11: Outpue response to step-change in load current
50%-100%-50% of Ix). Load cap: 1µF ceramic cap and
10µF, 100mΩ ESR tantp. Ch 1: Vout (500mV/div). Ch 2: Iout
(2A/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 (500mV/div). Ch 2: Iout (2A/div).
Product # MQFL-28VE-28S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005099 Rev. 1
04/22/09
Page 7
MQFL-28VE-28S
Curren
3.3A
ꢁechnical Specification
See Fig. 16
See Fig. 15
iC
MQME
Filter
QFL
ter
VOUT
TBD
VSOURCE
10µF,
1µF
ceramic
100m
ESR
W
capacitor
apacitor
Figu: Test set-up diagram showing meant points for
Input al Ripple Curent (Figure ) and Voltage Ripple
(Figur
Figure 13: Output voltage response to step-change in input voltage
(16V - 50V - 16V). Load cap: 10µF, 100mΩ ESR tantalum cap and 1µF
ceramic cap. Ch 1: Vout (500mV/div). Ch 2: Vin (20V/div).
TBD
D
Figure 15: Input terminal curric, at full rated output nt
and nominal input vowith SyQ filter module (50mA
Bandwidth: 20MHz. re 14.
e 16: Ouput voltage ripple, Vout, at nominal input voltage and
rd current (20mV/div). Load capacitance: 1μF ceramic capacitor
and 10μF tantalum capacitor. Bandwidth: 10MHz. See Figure 14.
TBD
TBD
Figure 17: Rise ot voltage after the removal of a short circuit
across the output terCh 1: Vout (5V/div). Ch 2: Iout (2A/div).
Figure 18: SYNC OUT vs. time, driving SYNC IN of a second SynQor
MQFL converter. Ch1: SYNC OUT: (1V/div).
Product # MQFL-28VE-28S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005099 Rev. 1
04/22/09
Page 8
MQFL-28VE-28S
Curren
3.3A
ꢁechnical Specification
TBD
T
Figure 19: Magnitude of incremental output impedance (Zout =
vout/iout) for minimum, nominal, and maximum input voltage at full
rated power.
Figu: Magnitude of increental forwarmission (FT =
vout/minimum, nminal, and mimum ltage at full
rated p
D
TBD
e 23: Hih frequency conducted emissions of standalone MQFL-
2Vout module at 120W output, as measured with Method
CE102. Limit line shown is the ‘Basic Curve’for all applications with
28V source.
Figure 22: Magnitude oincremut impedance (Zin = v
iin) for minimum, noand manput voltage at full ra
power.
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 cy conducted emissions of standalone MQFL-
28-05S, 5Vout modu0W output, as measured with Method
CE102. Limit line show‘Basic Curve’for all applications with a
28V source.
Product # MQFL-28VE-28S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005099 Rev. 1
04/22/09
Page 9
MQFL-28VE-28S
Curren
3.3A
ꢁechnical 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 thd operation of addi-
tional control features provided by the onverter.
UNDER-VOLTAGE TRSIEN
The MQFL-28VE series of DC/DC conincorporate a special
“boost-converter” e thapermits the verters to eliver full
power through trwhere its input oltage falls to as low as
5.5V. Normally, thconvertes non-opernal, and the
converter’s it voltaassed directly ttion
stage ee the Block DiagWhen an under-voltage
occurhe boost-converter omes operional, and it steps-up
the inltage to a vlue greater than 1hat the nominal
output can be sstained.
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 outpu
the converter have a fundamental ripple frequency of abou
kHz in the free-running mode.
It is importote that tbooserter stmust first
become “armed” before it come onal. Tis “arming”
en the converter’s intage exapproximately
18oost-converter then bs operational whenever
the input voltage below the voltage, and it will
remain operatioal aas the inpoltage remains within
thregion showin ther-Voltage Transient Profile Page.
If the input voltage drops this transient profile, the boost-
convertee is not guaranto continue operating (it may,
but it will pself from exessive stresses). Once the boost-
converter stops ng, the converter’s input voltage will be
rennected direcy input of the pre-regulator stage. The
output voltage will thefore collapse unless the input voltage is
16V, or greater.
Rectification of the isolation stage’s output is accoplished with
synchronous rectifiers. These devices, which are with a
very low resistance, dissipate far less energy than woky
diodes. This is the primary reason why the MQFL converte
such high efficiency, particularly at low oput voltages.
Besides improving efficiency, the nchronus rectifierpermit
operation down to zero load curere is no longer need
for a minimum load, as is typical for that use diodes for
rectification. The synchronous rectifiers amit a negative
load current to flow back iconverter’s ouerminals ithe
load is a source of short or lenergy. The MQFL crt-
ers employ a “back-current keep this negative
terminal current smal
: the bost-converter will not become re-armed for the
nnsienunless the input voltage once again exceeds
approtely 18V.
transient profile shown on the Under-Voltage Transient Profile
e 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 control circuit ohe input and osides of the
MQFL cohat determinconduction stae power
switches. Ths commucate with each othes the
isolation barrier tmagnetically coudevice. to-
isolators are sed.
• MIL-STD-704-8 (A through F)
• RTCA/DO-160E
• MIL-STD-1275B
A separate bias upply provides power th the and out-
put control circuitAmong other things, ts supy permits
the converter to operate idefinitely into a circuit and to
avoid a hiccup mode, ender a tough start-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-voltage lockoture with hysteresis is provided,
as well as an over-vshutdown. There is also
an output cuent lhat is constant as the load
impedance ses ta 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 nvalue 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-28S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005099 Rev. 1
04/22/09
Page 10
MQFL-28VE-28S
Curren
3.3A
ꢁ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 hold-up
capacitor would be a good starting point. The exact amount of
capacitance required depends on the application (source induc-
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 the ENA2 pin. A higher input
standby current therefore results in tcase.
Both enable pins are intepulled o that an open
connection on both pins wie the verter. Figure A
shows the equivalent uit lookeitheenable pins. It is
TTL compatible.
V
82K
1N
P
(or P
ENABE
TO ENABLE
CIRCUITRY
K
125K
2N39
(or PIN 8)
IN N
Because input system stability is harder to maintain as the input
voltage gets lower, the MQFL-28VE series convertdesigned
to give external access to the voltage node between -con-
verter and the pre-regulator stages. This access, at the “S
pin (pin 3), permits the user to add a sbilizing blk ca
with series resistance to this node. Since te voltage at this no
stays above 16V, the amount of pacitace required is much
less than would be required on verter’s input pinwhere
the voltage might drop as low as ecommended that a
22µF capacitor with an ESR of about 1nected between
the STABILITY pin and the RETURN pin ). Without this
special connection to the intde of the converter, a 0µF
stabilizing bulk car woubeen required acr
converter’s input pi
ure A: Equivent cioking into either the ENA1 or ENA2
pins with respect to its coring return pin.
SHUT DOhe MQFL coverter will shut down in response
to only four co: ENA1 input low, ENA2 input low, VIN
iut below unde-vlockout threshold, or VIN input above
over-voltage shutdowthreshold. Following a shutdown event,
there is a startup inhibit delay which will prevent the converter
om restartig fapproximately 300ms. After the 300ms delay
ses, if te enable inputs are high and the input voltage is
he 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
ording to the “Turn-On Delay, Rising Vin” specification.
Another advantage of thITY in is that vides a volt-
age sourstays above hen the under-transient
occurs. Thisource mht be useful for otheitry 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 converter has two epins. Both must
have a logic high level the converter to babled. A logic
low on either pin will inhe converter.
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 (piis referwith repect to the converter’s
input return (pin 2ENA2 pin 12) is referenced with
respect to onvertoutput return (pin 8). This permits the
converter to bitefrom either the input or the output side.
Regardless of whin is used to inhibit the converter, the
regulation and the in stages are turned off. However,
Product # MQFL-28VE-28S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005099 Rev. 1
04/22/09
Page 11
MQFL-28VE-28S
Curren
3.3A
ꢁ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 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
IRCUITRY
SIN
IN RT
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 synchroniza-
tion signals. A pulse train at the desired frequency shou
applied to the SYNC IN pin (pin 6) with respect to the I
RETURN (pin 2). This pulse train should have a duty cycle in the
20% to 80% range. Its low value should be below 0.8V to be
guaranteed to be interpreted as a logic low, ahigh value
should be above 2.0V to be guaranteed to be ias a
logic high. The transition time between the two states e
less than 300ns.
FigB: Equivalent circuit oking intNC IN pin with
resphe IN RTN (nput return) pn.
5K
YNC OUT
FRONC
CIRCUITRY
PIN 5
IN RTN
PIN 2
OPEN CR
OUTP
If the MQFL converter is not to be synchronzed, the SYNC IN pin
should be left open circuit. The erter wl then opete in its
free-running mode at a frequenximately 550 kHz.
Figure C: Equrcuit looking into SYNC OUT pin with
pect to the IN t return) pin.
CURRENT SHARE: When several MQFL converters are placed
parallel tachieve either a higher total load power or N+1
ndancytheir SHARE pins (pin 11) should be connected
to. The voltage on this common SHARE node represents the
average current delivered by all of the paralleled converters. Each
onverter monitors this average value and adjusts itself so that its
put current closely matches that of the average.
If, due to a fault, the SYNC IN pin is heher a logic low
or logic high state continthe MQFL coerter will evert
to its free-running fruency
The MQFL convertehas a C OUT pin (pin 5). T
output can be used to SYNIN pins os many as ten
(10) otheQFL convertepulse train cout of SYNC
OUT haycle of 50d a frequency thches th
switching fref the converter witich it is ated
This frequency is free-running frncy if thno
synchronizaon signat the SYNpin, the synchriza-
tion frequency if 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 ignal is available only he vtage at the
STABILITY pin (pin 3) iabove approxima2V and when
the converter is not id through the EN1 pin. An inhibit
through the ENA2 pin wturn the 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 MQFL rter thits SYNC IN pin driven by
the SYNC T pin second QFL converter will have its
start of its sng cle delayed approximately 180 degrees
relative to that second converter.
Product # MQFL-28VE-28S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005099 Rev. 1
04/22/09
Page 12
MQFL-28VE-28S
Curren
3.3A
ꢁ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
1,000
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
0.5
1.5
2
2.5
Vnom
ncꢂease in
Rtrim = 100 x
[
Vout – Vnom – 0.025
]
where:
Figurput Voltae Trim Grap
Vnom = the converter’s nominal output voltage,
Vout = the desired output voltage (greater than Vnom), and
Rtrim is in Ohms.
INPUT UNDER-VOLTAGOCKOhe MQL converter
under-voltage lockout that ethe converter will
e input voltagis toThis lockout only appears
when the boost-conter is not op. The threshold of input
voltage at which therter will turn higher that the thresh-
d at which it ill turIn additionthe MQFL converter will
not respond to a state of put voltage unless it has remained
in that sfor more than 200µs. This hysteresis and the
delay ensper operation hen the source impedance is high
or in a noisy ment.
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 volat the low
end of the input voltage range at the higher end d cur-
rent and temperature range. Please consult the factory .
Factory trimmed converters are available y request
INPUT OVER-VOLGE SHUTDOWN: The MQFL converter
also has an over-voltage feature that ensures the converter will be
off if the input voage is too high. It also has a hysteresis and time
ay to ensre proper operation.
12
VIN
ENA 2
2
3
5
6
11
nal bulk capacito
RSTABILIT
TN
SHARE
10
STABILITY
ENA 1
+SNS
+
28 Vdc
RTRIM
MQFL
9
-SNS
8
me
o
SYNC OUT
SYNC IN
OUT RTN
Load
7
+VOUT
CSTABILITY
+
Figure D: Typical confor output voltage trimming.
Product # MQFL-28VE-28S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005099 Rev. 1
04/22/09
Page 13
MQFL-28VE-28S
Curren
3.3A
ꢁechnical Specification
The Mil-HDBK-1547A component derating guideline calls for
a maximum component temperature of 105ºC. Power Derating
Curve figure; therefore has one power derating curve that ensures
this limit is maintained. It has beeor’s extensive experi-
ence that reliable long-term certer n can be achieved
with a maximum componeerature 5ºC. In extreme
cases, a maximum temperatur5ºC is missible, but not
recommended for lonrm opehere high reliability is
required. Derating curves for these emperature limits are
also included in e. Thmaximum temperate at which
the converter shoperated 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.
When the verter ied oa metal will
help tmake the converte bottom a uniform te
How ell it does so depeon the thckness of the plate an
on trmal condutance of the interfer (e.g. thermal
greasal pad, ec.) between case platenless
this is dy well, it is importot to mthe plate’s
temperature e maximucase rature. is easy for
em to be as much as 5-1ferent poweand at high
ures. It is sugested thermocuple be attached
direthe converter’s case tha small hole in the plate
when investigatinhot the conis getting. Care must
also be made tensut there is not large thermal resistance
ween the thermocouthe case due to whatever adhesive
might be used to hold the couple 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 back-
drive current limit is placed sufficiently below zero so that the
verter may operate properly down to zero load, but its ab
value (see the Electrical Characteristics page) is small compared
to the converter’s rated output current.
THERMAL CONSIDERATIONS: Figure 5 shogested
Power Derating Curves for this converter as a fune
case temperature, input voltage and the maximum desired
MOSFET junction temperature. All othecomponentwithin t
converter are cooler than the hottest MOSFET.
INPUT SINSTABILTY: This condition can occur
because any converter appears incrementally as a
ative resista. A detailed application note titled
“Input System Instabty” is available on the SynQor website
which provides an understanding of why this instability arises,
nd shows he eferred solution for correcting it.
Product # MQFL-28VE-28S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005099 Rev. 1
04/22/09
Page 14
MQFL-28VE-28S
Curren
3.3A
ꢁechnical Specification
CONSTRUCTION AND ENVIRONMENTAL STRESS SCREENING OPTIONS
ES-Gꢂade
(-55 ºC to +125 ºC)
(Element Evaluation)
HB-Gꢂade
(+125 ºC)
(Elemation)
Consistent with
MIL-SꢁD-883F
C-Gꢂade
(-40 ºC to +100 ºC)
Scꢂeening
Inteꢂnal Visual
Yes
ꢀo
Yes
Ye
*
Condition
(-55 ºC to +125 ºC)
tion
(-6150 ºC)
ꢁempeꢂatuꢂe Cycle
Method 1010
Constant
Acceleꢂation
Method 2001
(Y1 Diꢂection)
Conon A
(5000g)
ꢀo
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
, +100 ºC
Full QoꢂSea
-5+125 º
ll QoꢂSeal
Mechanical Seal,
ꢁheꢂmal, and Coating
Pꢂocess
Full
Exteꢂnal Visual
2009
es
es
*
Constꢂuction Pꢂocess
QoꢂSeal
QoꢂSeal
* Pꢂ IPC-A-0 (rev. D) Class 3
MilQor converters and filters are our variations of coruction technique and environmental stress screening options. The
three highest grades, C, ES, and HB, all or’s proprietary Seal™ Hi-Rel assmbly process that includes a Parylene-C coating
of the circuit, a high pere thermal comnd filler, nd a barrier gld plated aluminum case. Each successively higher
grade has more strinent ml and electrical testis well onger brn-in cycle. The ES- and HB-Grades are also con-
structed of compohat haprocured through aent evan process that pre-qualifies each new batch of devices.
Product # MQFL-28VE-28S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005099 Rev. 1
04/22/09
Page 15
MQFL-28VE-28S
Curren
3.3A
ꢁechnical Specification
0.093
[2.36]
0.250
+VIN
ENA 2
1
12
IN RTN
SHARE
2
11
1.50 [38.10]
[5.08]
N-CU
MQFL-28VE-28S-X-HB
DC/DC CONVERTER
28Vin 28Vout @ 3.3A
STABILITY
+SNS
-SNS
3
4
5
6
10 1.260
[32.00]
ENA 1
9
8
7
MADE IN USA
OUT RTN
+VOUT
SYNC OUT
SYNC IN
0.041.02]
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]
0.220 [5
0128 [3.25]
2.96 [75.2]
0.228
0.390 [9.91]
ase
0.093
[2.36]
0.25]
+VIN
1
12
1
0.200 [5.08]
TYP. NON-CUM.
IN RTN
STABILITY
SHA
2
3
4
5
6
10]
MQFL-28VE-28S-U-HB
DC/DC CONVERTER
28Vin 28Vout @ 3
+SNS
SN
10 1.260
2.00]
ENA 1
9
OURTN
+VOUT
SYNC OUT
SYNC IN
MADE IN USA
0.040 [1.02]
PIN
S/N 0000000 D/C 3210
0.42
[10.7]
3.50]
210]
3.00 0]
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) dameter
Pin Function
1 Positive input
2 Input return
3 Stability
Pin Function
7 Positive output
8 Output return
9 - Sense
Pins Material: Copp
Finish: Gold over Nicke
3)
All dimensions ches (mrances: x.xx +/-0.02 in. (x.x +/-0.5mm)
x.xxx +/-0.010 x +/-)
4)
5)
6)
Weightz (78.typical
4 Enable 1
10 + Sense
Workmansets or exceeds IPC-A-610C Class III
Print Labeling Surface per Product Label Format Drawing
5 Sync output
6 Sync input
11 Share
12 Enable 2
Product # MQFL-28VE-28S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005099 Rev. 1
04/22/09
Page 16
MQFL-28VE-28S
Curren
3.3A
ꢁ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
0.200 [
P. NON.
2.00
[50.80]
IN RTN
STABILITY
SHARE
+SNS
11
10
9
MQFL-28VE-28S-Y-HB
DC/DC CONVERTER
28Vin 28Vout @ 3.3A
1.50
[38.10]
-SNS
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 [1.02]
PIN
0.050 [7]
0.22
1.750 [44.45]
2.50 [63.50]
0.375 [9.52]
2.96 [75.2]
0.228 [579]
Case Y
ase Z
(vf Y)
Case W
(variant of Y)
0.250 [6.35]
0.250 [6.35]
0.200 [5.08]
0.[5.08]
TYP. 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]
050 [1.27]
0.6 [9.2]
2.80 [71.1]
0.525 [13.33]
0.390
[9.91]
0.390
[9.91]
5 [1
0 [71.1]
PIN DESIGNATIONS
Pin Function Pin Function
NOTES
1)
Pins 0.040” (1.02mm) er
2)
Pins Material: Copper
1 Positive input
2 Input return
3 Stability
4 Enable 1
5 Sync output
6 Sync input
7 Positive output
8 Output return
9 - Sense
10 + Sense
11 Share
Finish: Gold el plate
All dimenns in (mm) Ts: x.xx +/-0.02 in. (x.x +/-0.5mm)
x.xxx 0 in. (x +/-0.25mm)
Weight: 2.8.5 g) typical
Workmanshipor exceeds IPC-A-610C Class III
Print Labeling on rface per Product Label Format Drawing
3)
4)
5)
6)
12 Enable 2
Product # MQFL-28VE-28S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005099 Rev. 1
04/22/09
Page 17
MQFL-28VE-28S
Curren
3.3A
ꢁechnical Specification
MilQor Converter FAMILY MATRIX
The tables below show the array of MQFL converters available. When ordering SynQor converters, please ensure that you use
the complete part number according to the table in the last page. Contact the factory for other requir
Single Output
Output †
28
1.5V
1.8V
2.5V
3.3V
5V
6V
7.5V
9V
12V
(12S)
15
(
±5V
)
2V
2D)
±15V
(15D)
Full Size
(1R5S) (1R8S) (2R5S) (3R3S) (05S)
(06S) (7R5S) (09S)
(28S)
MQFL-28
16-40Vin Cont.
Tl
10A
Total
8A
otal
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
17A
20A
16A
16A
13A
13A
13A
13
11A
10
0A
8A
8A
4A
4A
16-50Vin 1s Trans.*
Absolute Max Vin = 60V
MQFL-28E
16-70Vin Cont.
16-80Vin 1s Trans.*
Absolute Max Vin =100V
24A
Total
To
MQFL-28V
16-40Vin Cont.
5.5-50Vin 1s Trans.*
Absolute Max Vin = 60V
Tota
8A
l
6.5A
Ttal
6A
6.5A
8A
3.3A
A
4A
MQFL-28VE
16-70Vin Cont.
5.5-80Vin 1s Trans.*
Absolute Max Vin = 100V
8
Total
6.5A
Total
MQFL-270
155-400Vin Cont.
155-475Vin 0.1s Trans.*
Absolute Max Vin = 550V
24A
otal
10A
Total
8A
Total
10A
Single Output
Dual Output †
8V
1.5V
1.8V
2.5V
3.3V
6V
7.5
9V
12V
(12S)
1
(15S)
±5V
(05D)
±12V
(12D)
±15V
(15D)
Half Size
(1R5S) (1R8S) (2R5S) (3R3S)
) (7R5S) (09S)
)
MQHL-28 (50W)
16-40Vin Cont.
16-50Vin 1s Trans.*
Absolute Max Vin = 60V
10A
Total
4A
Total
3.3A
Total
20A
20A
20A
15A
15A
10A
10A
8A
6.6A
6.6A
5.5
5.5A
4A
3.3A
1
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
10
10A
10A
0A
7.
7.5A
5A
5A
4A
4
.3A
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 Max Vin =100V
5A
Total
2A
Total
1.65A
Total
Check wittory for availa
Product # MQFL-28VE-28S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005099 Rev. 1
04/22/09
Page 18
MQFL-28VE-28S
Curren
3.3A
ꢁechnical 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
eenin
de
Voltage
range
Single
Output
Dual
Output
1r5S
1r8S
2r5S
3r3S
05S
06S
7r5S
09S
28
28E
28V
28VE
U
X
Y
C
ES
B
MQFL
MQHL
MQHr
05D
12D
15D
270
12S
15S
28S
Examp
QFL-28VE-28S–Y–ES
APPLICATION NOTES
A variety of application notes aechnical white paers can be dwnloaded in pt from the SynQor website.
PATENTS
SynQor holds thing paone or more of whicht applis product:
5,999,417
6,927,9
6,222
7,050,3
6,5,890
,072,190
677,109
5,146
,159
7,124
6,731,520
7,269,034
6,894,468
7,272,021
6,896,526
7,272,023
Contact SQor for further matn:
Phone:
978-849-0600
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: 8-567-9596
Fax:
949-0602
E-ma
b:
mqne@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.
Ass: 155 Swanson Road
Boxborough, MA 01719
USA
Product # MQFL-28VE-28S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005099 Rev. 1
04/22/09
Page 19
相关型号：
©2020 ICPDF网 联系我们和版权申明