MQFL-28E-1R5S-X-B [SYNQOR]
DC-DC Regulated Power Supply Module, 1 Output, 60W, Hybrid, MODULE-12;
| 型号： | MQFL-28E-1R5S-X-B |
| 厂家： | 
SYNQOR WORLDWIDE HEADQUARTERS |
| 描述： | DC-DC Regulated Power Supply Module, 1 Output, 60W, Hybrid, MODULE-12 |
| 文件： | 总17页 (文件大小：1762K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MQFL-28E-1R5S
Single Output
HI G H RELIABILITY DC-DC CONVER
16-70V
16-80V
1.5V
40A
8520A % @ 40A
Continuous Input
Transient Input
Output
Output
ciey
FU L L PO W E R OP E R A T I O N : -55ºC TO 25º
The MilQor® series of high-reliability DC-DC converters
brings SynQor’s field proven high-efficiency synchronous
rectifier technology to the Military/Aerospace industry.
TM
SynQor’s innovative QorSeal packaging approach ensures
survivability in the most hostile environments. Compatible
with the industry standard format, these conver
at a fixed frequency, have no opto-isolators, and follow
conservative component derating guilines. They are
designed and manufactured to comply wite range of
military standards.
Design Process
MQFL series converters are:
• Designed for reliability per NAVSO-Pguidelines
D
ESIGNED & MA N U F A C T U R E D IN T H E USA
A T U R IN G O R -REL S S E M B L Y
Q
S
EAL™ H
I
A
• Designed with comporated per:
— MIL-HDBK47A
Features
— NAVSO 1A
• Fixed switching frequency
• No opto-isolators
• Parallel operation with current share
• Remote sense
• Clock synchronization
• Primary and secondary referenced enable
Qucation Pr
MQFL seriters are qualified t
• MIL-STD-810
— consistent wRTCA/D0E
• SynQor’s irst Article Qualificat
• Continuous short circuit and overload protection
• Input under-voltage lockout/over-voltage shutdown
— consisent with MIL-D-883F
• SynQor’s Long-Term Storage Survivabualification
• SynQor’s on-gointest
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
• AS91d ISO 001:2000 certified facility
• Full comptraceability
• Temperature g
• DEF-STAN 61-5 (part 6)/5
• MIL-STD-461 (C, D, E)
• RTCA/DO-160E Section 22
• Constant acceler
• 24, 96, 160 hour burn-in
• Three level temperature screening
Product # MQFL-28E-1R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005155 Rev. 2
02/19/09
Page 1
MQFL-28E-1R5S
1.5V
40A
Output:
Current:
Technical Specification
BLOCK DIAGRAM
REGULATION STAGE
ISOLAN STAG
7
CURRENT
SENSE
1
POSITIVE
OUTPUT
POSITIVE
INPUT
T1
T
T2
2
INPUT
RETURN
O
RETURN
3
CASE
GATE S
GATE DRIVERS
UVLO
OVSD
12
CURRENT
LIMIT
ENABLE 2
4
MA
11
ENABLE 1
PRIMARY
CONTROL
SECONARY
CONTROL
SHARE
5
10
DATA COUPLING
SYNC OUTPUT
+ SENSE
6
9
SYNC INPUT
-
SENSE
IAS PO
P
TRANSFORMER
TYPICONNEON DIAGR
1
12
+VIN
ENA 2
open
means
on
11
10
TN
SHARE
+ SNS
3
CSE
+
–
MQFL
4
5
6
9
8
7
+
–
28 Vdc
Load
ENA 1
– SNS
OUT RTN
+VOUT
SYNC OUT
SYNC IN
op
means
n
Product # MQFL-28E-1R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005155 Rev. 2
02/19/09
Page 2
MQFL-28E-1R5S
1.5V
40A
Output:
Current:
Technical Specification
MQFL-28E-1R5S ELECTRICAL CHARACTERISTICS
Parameter
Min. Typ. Max. Units Notes & Conditions
Group A
Subgroup
Vin=28V dc ±5%, Iout=40A, CL=0ree runn10)
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
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 (≤100 µs)
Operating Case Temperature
Storage Case Temperature
Lead Temperature (20s)
-65
Voltage at ENA1, ENA2
-1.2
INPUT CHARACTERISTICS
Operating Input Voltage Range
"
16
16
28
28
70
80
V
V
us
2, 3
4, 5, 6
Trs
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 N
14.75 15.50
13.80 14.40
0.50
V
"
"
1, 2, 3
1, 2, 3
1, 2, 3
1.10
1.80
Note 3
90
82
95
86
100
90
15
8
V
V
mA
mA
mA
mA
1,3
1,3
1,3
Vin = 16V; Iut = 4
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
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 =
Vout Set Point Over Temperatur
Output Voltage Line Regulation
Output Voltage Load Regulation
Total Output Voltage Rang
Vout Ripple and Noise Peak
Operating Output Cut Rang
Operating Output nge
Output DC Current-Lption
Short Circuit Output Cu
Back-Drive Current Limit bled
Back-Drirent Limit whd
Maximapacitance
DYNAMIC ERISTIC
Output Voltage ad Transient
For a PosStep Load Curret
For a Neg. Step Chanin Load C
Settling Tim(either case)
Output Voltage eviation Line Trnsient
For a Pos. Stehange in Line oltage
For a Neg. Step Change in Line Voltage
Settling Time (either c)
Turn-On Transient
1
2
25
0
V, 28V, 80V
Vin 8V, 80V
Bandwi0kHz – 10MHz; see Figure 14
60
1.48
1.47
0
1.5
1.5
0
7
1.50
15
1.52
1.53
20
V
mV
mV
W
A
A
Vout asensl
1
2, 3
"
" ; Vin = 16V, 28V, 80V; Iout=40A
" ; Vout (Iout=0A) - Vout @ (Iout=40A)
"
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
11
1.54
50
Bandwth = 10MHz; CL=11µF
0
0
41
41
46
47
13
10
See Note 4
Vout ≤ 1.2V
53
50
10,00
µF
See Note 6
50
-300
300
50
mV
mV
µs
Total Iout step = 20A‹-›40A, 4A‹-›20A; CL=11µF
4, 5, 6
4, 5, 6
4, 5, 6
450
"
See Note 7
Vin step = 16V‹-›80V; CL=11µF; see Note 8
00
200
200
500
mV
mV
µs
"
"
4, 5, 6
4, 5, 6
See Note 5
250
See Note 7
Output Voltage Rise Ti
Output Voltage Overshoot
Turn-On DelaVin
Turn-On Delay, RNA1
Turn-On y, RisiA2
EFFICIEN
6
0
5.5
3.0
1.5
10
25
8.0
6.0
3.0
ms
%
ms
ms
ms
Vout = 0.15V -› 1.35V
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 = 40A (1
TBD
TBD
TBD
TBD
TBD
TBD
TBD
83
87
%
%
%
%
%
%
%
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 = 20A (16V
Iout = 40A (28Vin)
82
Iout = 20A (28Vin)
85
Iout = 40A (40Vin)
80
Iout = 20A (40Vin)
83
Iout = 40A (70Vin)
TBD
TBD
Load Fault Power Dissipation
Iout at current limit inception point; See Note 4
Product # MQFL-28E-1R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005155 Rev. 2
02/19/09
Page 3
MQFL-28E-1R5S
1.5V
40A
Output:
Current:
Technical Specification
MQFL-28E-1R5S ELECTRICAL CHARACTERISTICS (Continued)
Parameter
Min. Typ. Max. Units Notes & Conditions
Group A
Subgroup
Vin=28V dc ±5%, Iout=40A, CL=0free run10)
unless otherwise specified
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
700
kHz
Frequency Range
500
2.0
-0.5
20
kHz
V
V
%
1, 2, 3
1, 2, 3
, 2, 3
Logic Level High
Logic Level Low
0.8
80
Duty Cycle
SeNote 5
Synchronization Output
Pull Down Current
Duty Cycle
20
25
mA
VSYNC = 0.8V
Output connected to SYf otheunit
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
µA
V
µA
1, 2, 3
See Note 5
1, 2, 3
See Note 5
1, 2, 3
80
2
Cent drain ired to ensure is off
20
4.5
Imax drafrolowed, moduln
See Figure
3.2
RELIABILITY CHARACTERISTICS
Calculated MTBF (MIL-STD-217F2)
GB @ Tcase = 70ºC
3
2800
40
TD
10 Hrs.
3
AIF @ Tcase = 70ºC
10 Hrs.
3
Demonstrated MTBF
10 Hrs.
WEIGHT CHARACTERISTICS
Device Weight
79
g
Electrical Characteristics Notes
1. Converter will undergo input over-voltage
2. Derate output power tted power at = 135ºC.
3. High or low state of nput vst persist for about 200be actthe locout or shutdown circuitry.
4. Current limit incedefinepoint where the outpue has to 90% of its nominal value.
5. Parameter not tesuarantthe limit specified.
6. Load current transitio10µs.
7. Settling me measured fof tansient to nt where the otage has returned to ±1% of its final value.
8. Line ansition time .
9. Input vme ≤ 250
10. Operating tr at a synchroniquency e fre running frequency will cause the converter’s efficiency to be slightly reduced
and it may also ight reducon in taximum ourrent/power available. For more information consult the factory.
11. SHARE piouputs wer failurng pug a faucondition. See Current Share section of the Control Features description.
12. After a disale or fault event, modulbited ftarting for 300ms. See Shut Down section of the Control Features description.
13. Only the ES ad HB grade pucts are at thremperatures. The B and C grade products are tested at one temperature. Please refer to the
Construction nd Environmental Stress ScrOptins table for details.
14. These derating curves ply for the ES- and Hde products. The C- grade product has a maximum case temperature of 100ºC and a maximum
junction temperaturf 20ºC above TCASEhe B- grade product has a maximum case temperature of 85ºC and a maximum junction
temperature rise of 20ll load.
Product # MQFL-28E-1R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005155 Rev. 2
02/19/09
Page 4
MQFL-28E-1R5S
1.5V
40A
Output:
Current:
Technical Specification
100
95
90
85
80
75
70
65
60
100
95
90
85
80
75
70
65
0
16 Vin
28 Vin
40 Vin
70 Vin
16 Vin
n
C
2ºC
125ºC
0
4
8
12
16
20
24
28
32
36
40
Load Current (A)
Case Temature (º
Figure 1: Efficiency at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at Tcase=25°C.
Figure cy at nominal output e and 6ated power vs.
case temperatfor input voe of 1640V, an0V.
22
20
18
16
14
12
10
8
18
16
14
12
10
8
6
6
16 Vin
16 Vin
28 Vin
40 Vin
70 Vin
4
2
28 Vin
40 Vin
70 Vin
4
2
0
0
-55ºC
25ºC
125ºC
0
4
8
12
24
28
32
40
Lont (A)
Case Temperature (ºC)
Figure 3: Power dissipnomintput voltage vs. load curre
for minimum, nominal, anum iut voltage ase=25°C.
Figure 4: Power dissipation at nominal output voltage and 60% rated
wer vs. case temperature for input voltage of 16V, 28V, 40V, and 70V.
50
40
30
20
10
0
5
60
45
30
15
0
2.00
1.75
1.50
1.25
1.00
0.75
Tmax = 105ºC, Vin = 70
Tmax = 105ºC, Vin = 50
Tm= 28
T70
Tmax = 1
ax = 125
= 145ºC,
145ºC, Vi
ºC, Vi8
0.50
28 Vin
0.25
0.00
25
35
4
65
75
85
95
105 115 125 135 145
0
5
10
15
20
25
30
35
40
45
50
ase Temperature (ºC)
Load Current (A)
Figure 6: Output voltage vs. load current showing typical current
limit curves.
Figure 5: Output Curren/ Output Power derating curve as a
function of Tcase and the Maximum desired power MOSFET junction
temperature (see Note 14).
Product # MQFL-28E-1R5S
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www.synqor.com
Doc.# 005-0005155 Rev. 2
02/19/09
Page 5
MQFL-28E-1R5S
1.5V
40A
Output:
Current:
Technical Specification
Figure 7: Turn-on transient at full resistive load and zero output
capacitance initiated by ENA1. Input voltage pre-applied. Ch 1:
Vout (500mV/div). Ch 2: ENA1 (5V/div).
Figure transient at full resiad and F output
capacitance ited by ENAnput vore-appli. Ch 1:
t (500mV/div). Ch 2: ENdiv).
Figure 10: Turn-on transient at full resistive load and zero output
acitance initiated by Vin. ENA1 and ENA2 both previously high.
h 1: Vout (500mV/div). Ch 2: Vin (10V/div).
Figure 9: Turn-on tranull resie load and zro output
capacitance initiated by Eput vltage pre-ad. Ch 1:
Vout (50v). Ch 2: ENiv).
Figure 11: Output voltaesponse 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-28E-1R5S
Phone 1-888-567-9596
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Doc.# 005-0005155 Rev. 2
02/19/09
Page 6
MQFL-28E-1R5S
1.5V
40A
Output:
Current:
Technical Specification
See Fig. 16
See Fi
iC
MQME
M
Convr
VOUT
VSOURCE
10 µF,
c
capacitor
capacitor
Figure et-up diagram showinsurements for
Input Termiple Currenigure 1Output tage Ripple
Figure 16).
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 (200mV/div). Ch 2: Vin (20V/div).
Figure 15: Input termint rippc, at full ratd output curre
and nominal input voltagnQor MQ filter me (50 mA/div).
BandwidMHz. See Fig
Figure 16: Output voltage ripple, Vout, at nominal input voltage
d rated load current (20mV/div). Load capacitance: 1µF ceramic
apacitor and 10µF tantalum capacitor. Bandwidth: 10MHz. See
Figure 14.
Figure 17: Rise of outpuoltage after the removal of a short circuit
across the output terminals. Ch 1: Vout (500mV/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-28E-1R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005155 Rev. 2
02/19/09
Page 7
MQFL-28E-1R5S
1.5V
40A
Output:
Current:
Technical Specification
0.1
0
-10
-20
-30
-40
-50
-60
-70
-8
-90
00
0.01
0.001
16Vin
28Vin
40Vin
40
0.0001
10
100
1,000
Hz
10,000
100,000
0
0
1,0
H
0
100,000
Figure 19: Magnitude of incremental output impedance (Zout =
vout/iout) for minimum, nominal, and maximum input voltage at full
rated power.
Figure itude of incremental d transn (FT =
vout/vin) foum, nominand minput vge at full
ated power.
10
0
10
-10
-20
1
-30
16V
0.1
28Vin
40Vin
16Vin
-40
-50
28Vin
40Vin
0.01
10
10,000
10
100
1,000
Hz
10,000
100,000
Figure 21: Magnitude ental rse transmision (RT =
iin/iout) for minimum, nod mamum inpuage at full
rated po
Figure 22: Magnitude of incremental input impedance (Zin = vin/iin)
minimum, nominal, and maximum input voltage at full rated power.
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-28E-1R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005155 Rev. 2
02/19/09
Page 8
MQFL-28E-1R5S
1.5V
40A
Output:
Current:
Technical Specification
BASIC OPERATION AND FEATURES
CONTROL FEATURES
ENABLE: The MQFL conas two pins. Both must
have a logic high level for thrter to nabled. A logic
low on either pin will ibit the er.
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 ENA1 pin (p4) is rferenced wpect to thconverter’s
input return (The A2 pin (pn 12) is referenced with
respect to the cooutput urn (pin 8). This permits the
converter be inhibm eitr the inpt side.
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 output of
the converter have a fundamental ripple frequency of about 550
kHz in the free-running mode.
Regdless of which pin id to inhibit the converter, the
latind the isolation stages are turn. However, when
the er is inhibed through e ENAthe bias supply
is alsoff, whreas this suremainhen he con-
verter is through thENA2 A highput standby
current therefore results in tter ca
Rectification of the isolation stage’s output is accomplish
synchronous rectifiers. These devices, which are MOSFETs wit
very low resistance, dissipate far less energy than would Schottky
diodes. This is the primary reason why the MQFL converters have
such high efficiency, particularly at low output .
ble pins are nternalled high so that an open
connecon on bopins will enhe converter. Figure A
shows the equivarcuit looking either enable pins. It
is TTL compatle.
5.6V
Besides improving efficiency, the synchronous rectifit
operation down to zero load current. ere is no onger
for a minimum load, as is typical for converters that ue diodes or
rectification. The synchronous reifiers actually permit a nega-
tive load current to flow back inconverter’s output rminals
if the load is a source of short energy. The MQFL
converters employ a “back-drive currekeep this nega
tive output terminal currall.
82K
4148
PN 4
(or PIN 12)
ENABLE
TO ENABLE
CIRCUITRY
250K
125K
2N3904
There is a control it on binput and output sidhe
MQFL converter tmines nduction state of the p
switches. These circmunicwith each ther across t
isolation barrier througgneically coudevice. No
opto-isoare used.
PIN 2
r PIN 8)
IN RTN
Figure A: Equivalent circuit looking into either the ENA1 or ENA2
pins with respect to its corresponding return pin.
A separate bprovides power h the ind ou
put controcircuig other thngs, tias supplits
the converter to opee indefinto a ircuit nd to
avoid a hiccumode, even under a start-udition.
SHUT DOWN: The MQFL converter will shut down in response
to only four conditions: ENA1 input low, ENA2 input low, VIN
input below under-voltage lockout threshold, or VIN input above
over-voltage shutdown threshold. Following a shutdown event,
there is a startup inhibit delay which will prevent the converter
from restarting for approximately 300ms. After the 300ms delay
elapses, if the enable inputs are high and the input voltage is
within the operating range, the converter will restart. If the VIN
input is brought down to nearly 0V and back into the operating
range, there is no startup inhibit, and the output voltage will rise
according to the “Turn-On Delay, Rising Vin” specification.
An input under-oltage lockout feature witresiis provided,
as well as an input or-voltage shutdownere is also an
output current limit thaarly constant as the load impedance
decreases to a short circe., there s not fold-back or fold-
forward charato the t current under this condition).
When a load faulmoved, put voltage rises exponen-
tially to itnal ve without an overshoot.
The MQFL concontrol circuit does not implement an output
over-voltage limit over-temperature shutdown.
The following sectiondescribe the use and operation of addi-
tional control features provided by the MQFL converter.
Product # MQFL-28E-1R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005155 Rev. 2
02/19/09
Page 9
MQFL-28E-1R5S
1.5V
40A
Output:
Current:
Technical Specification
synchronization signal at the SYpin, or the synchroniza-
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 con-
nection diagram on Page 2. Similarly, the –SENSE pin (pin 9)
should be connected through a separate conductor to the return
terminal of the load.
tion frequency if there is.
The SYNC OUT signal is avonly whe DC input volt-
age is above approxiately 1when converter is not
inhibited through the ENA1 pin. At through the ENA2 pin
will not turn the SNC OUT signal of
NOTE: An MQerter that as its SYNC IN pin driven by
the SYNC UT pin ond MFL convertve its start
of its switching cycle dpproximately 180 ve
to tht of the second con.
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 regu-
lation 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.
Figuhows the euivalent circit looto the SYNC IN
pin. C shows the equivnt circuking o the
SYNC .
5V
Inside the converter, +SENSE is connected to +Vout with
resistor and –SENSE is connected to OUTPUT RETURN with a
10W resistor.
5K
It is also important to note that when remote used, the
voltage across the converter’s output terminals (pd 8)
will be higher than the converter’s nominal output volta
resistive drops along the connecting wi. This higer voa
the terminals produces a greater voltage tress on the converter’s
internal components and may cauthe converter to fail to deliver
the desired output voltage at end of the inpuvoltage
range at the higher end of the nt and temperature
range. Please consult the factory for de
TO SYNC
CIRCUITRY
N 6
SYNC IN
TN
K
PIN 2
Figure B: Equivalent rcuit looking into the SYNC IN pin with
respect to the IN RTN (input return) pin.
SYNCHRONIZATION: FL converter’s switcfre-
quency can be sonized external frequency e
that is in the 500 700 knge. A pulse train a
desired frequency shoapplieo the SYNIN pin (pin 6
with respt to the INPUT N (pin 2). Thtrain should
have a e in the 200% range. Its lue shoud
be below 0guaranted to be inreted as c low
and its high valbe above 2.0V guarantbe
interpreted s a ogih. The trtion tie between ttwo
states should be less than 300ns.
5V
5K
SYNC OUT
ROM SYNC
CIRCUITRY
PIN 5
IN RTN
PIN 2
OPEN COLLECTOR
OUTPUT
If the MQFL conrter is not to be synchrothe NC IN pin
should be left open circu. The converter wn operate in its
free-running mode at uency of approximely 550 kHz.
Figure C: Equivalent circuit looking into SYNC OUT pin with
respect to the IN RTN (input return) pin.
If, due to a fault, the SYNC n is held in either a logic low or
logic high state cously, QFL converter will revert to its
free-runninequen
CURRENT 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
together. 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.
The MQFL cr also has a SYNC OUT pin (pin 5). This
output can be udrive the SYNC IN pins of as many as ten
(10) other MQFL cors. The pulse train coming out of SYNC
OUT has a duty cycle 50% and a frequency that matches the
switching frequency of the converter with which it is associated.
This frequency is either the free-running frequency if there is no
Product # MQFL-28E-1R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005155 Rev. 2
02/19/09
Page 10
MQFL-28E-1R5S
1.5V
40A
Output:
Current:
Technical Specification
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.
100,000
10,000
1,000
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.
0.03
0.06
0.15
0.18
Increase t (V)
Figure E: Output Voltage aph
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 hp operation
at light loads. Consult factory for details.
As thput voltagis trimmed uoduces a greater voltage
stress on the convinternal comts and may cause the
converter to fato dthe desired utput voltage at the low
d of the input voltage at the higher end of the load
current ad temperature rPlease consult the factory for
details. y trimmed coners are available by request.
OUTPUT VOLTAGE TRIM: If desired, it is possible to
the MQFL converter’s output voltage abe its nominal vaue.
do this, use the +SENSE pin (pin 10) for tis trim functon instead
of for its normal remote sense ftion, ashown in igure D.
In this case, a resistor connectNSE pin to the SENSE
pin (which should still be connecteutput return, either
remotely or locally). The value of the istor should be
chosen according to the g equation or m Figure :
INPUT UNDETAGE LOCKOUT: The MQFL converter
han under-voakout feature that ensures the converter
will be off if the input voltage is too low. The threshold of
input voltage awhich the converter will turn on is higher that
he threshold awhich it will turn off. In addition, the MQFL
erter wnot respond to a state of the input voltage unless
iemained in that state for more than about 200µs. This
hysteresis and the delay ensure proper operation when the source
impedance is high or in a noisy environment.
407.5
Rtrim =
Vom – 5
where:
Vnom converter’s noutput voltag
Vout = d output vage (greater than Vand
Rtrim is in O
NPUT OVER-VOLTAGE SHUTDOWN: The MQFL converter
also has an over-voltage feature that ensures the converter will be
off if the input voltage is too high. It also has a hysteresis and
time delay to ensure proper operation.
12
VIN
ENA 2
2
11
RTN
SHARE
3
10
CASE
+ SNS
Rtrim
4
5
6
9
+
–
28 Vdc
ENA 1
– SNS
–
8
7
SYNC OUT
SYNC IN
OUT RTN
+VOUT
open
eans
Load
+
Figure D: Typical connection for output voltage trimming.
Product # MQFL-28E-1R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005155 Rev. 2
02/19/09
Page 11
MQFL-28E-1R5S
1.5V
40A
Output:
Current:
Technical Specification
The Mil-HDBK-1547A component guideline calls for a
maximum component temperare of Figure 5 therefore
has one power derating cat enis limit is main-
tained. It has been SynQor’s ve expnce that reliable
long-term converter option cahievewith a maximum
component temperature of 125ºC. me cases, a maximum
temperature of 1C is ermissible, ot recomended for
long-term operere high reliabily is required. Derating
curves for these himperatulimits are o included in
Figure 5. maximtemperature at erter
shoulbe operated is 13
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.
Whconverter is mounted on a mete, the plate will
help e the convrter’s case btom a temperature.
How wes so depends on tickness e plate and
on the theductance the ie laye.g. thermal
grease, thermal pad, etc.) n the cd the ate. Unless
one very well, it is int not take the plate’s
tfor the maximum cmperature. It is easy for
them to be as muc5-10ºC diffefull power and at high
temperatures. t is sted that a tmocouple be attached
ctly to the cnvertee through a small hole in the plate
when investigating how hconverter is getting. Care must
also be to ensure that ts not a large thermal resistance
between tocouple anthe case due to whatever adhe-
sive might be uhold the thermocouple in place.
To avoid any problems that might arise due to back-drive cur
the MQFL converters limit the negative current that the co
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 load, its absolute
value (see the Electrical Characteristics page) is pared
to the converter’s rated output current.
THERMAL CONSIDERATIONS: Figu5 shows the sugges
Power Derating Curves for this converter aa function f the case
temperature and the maximum ded power MOSFET junction
temperature. All other componethe converter acooler
than its hottest MOSFET, which at fulo more than 20ºC
higher than the case temperature directly is MOSFET.
INPUT SYSTEM ITABILITY: This condition can occur
because any DC/DC converter appears incrementally as a
negative resistae load. A detailed application note titled
put SysteInstability” is available on the SynQor website
provies an understanding of why this instability arises,
and s the preferred solution for correcting it.
Product # MQFL-28E-1R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005155 Rev. 2
02/19/09
Page 12
MQFL-28E-1R5S
1.5V
40A
Output:
Current:
Technical Specification
CONSTRUCTION AND ENVIRONMENTAL STRESS SCREENING OPTIONS
ESe
(-55 ºC)
(Element En)
HB-Grade
5 ºC to +125 ºC)
ment Evaluation)
Consistent with
MIL-STD-883F
B-Grade
(-40 ºC to +85 ºC)
C-Grade
(-40 ºC to +100 ºC)
Screening
Internal Visual
Yes
No
Yes
No
Yes
Yes
*
Cotion B
ºC to +12C)
Conditon C
(-65 ºC to +10 ºC)
Temperature Cycle
Method 1010
Constant
Acceleration
Method 2001
(Y1 Direction)
(50
No
No
g
Method 1015
Load Cycled
Burn-in
• 10s period
12 Hrs @ +100 ºC
24 Hrs C
6 Hrs @ +12
s @ +1ºC
• 2s @ 100% Load
• 8s @ 0% Load
Method 5005
(Group A)
Final Electrical Test
+25
ºC
-5, +25C
ll QorSeal
+25, +125 ºC
Full QorSeal
Mechanical Seal,
Thermal, and Coating
Process
Ad Package
Full QorSeal
External Visual
2009
Yes
*
Construction Process
Ruggedized
QorSeal
QorSeal
QorSeal
* Pr IPC-A-60 (Rev. D) Class 3
MilQor converterfilters ered in four variatioonstruchnique and environmental stress screening options. The
three highest gradS, and ll use SynQor’s propriQorSeal™ Hi-Rel assembly process that includes a Parylene-C coating
of the circuit, a high ance trmal compund filler, and kel barrier gold plated aluminum case. The B-grade version uses
a ruggeded assembly that includes ium performaermal compound filler and a black anodized aluminum case†.
Each sly higher gas more stringchanicaand electrical testing, as well as a longer burn-in cycle. The ES- and
HB-Gradeconstrucd of compents that been cured through an element evaluation process that pre-qualifies each
new batch of d
† Note: Since the sue of the black anodized case is not guaranteed to be electrically conductive, a star washer or similar device
should be used to cut through the surface oxide if electrical connection to the case is desired.
Product # MQFL-28E-1R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005155 Rev. 2
02/19/09
Page 13
MQFL-28E-1R5S
1.5V
40A
Output:
Current:
Technical Specification
0.093
[2.36]
[6.35]
+VIN
ENA 2
1
12
IN RTN
SHARE
2
11
1.50 [38.10]
0.2]
TYP. NN-CUM.
CASE
MQFL-28-1R5S-X-HB
DC/DC CONVERTER
28Vin 3.3Vout @ 40A
+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
0.040 [1.02]
PIN
S/N 0000000 D/C 3205-301 CAGE 1WX10
2.50 [63.50]
2.76 [70.10]
3.00 [76.20]
50 [1.2
0.59]
.25]
2.96 [75.2]
8 [5.79]
0.390
CX
0.093
[2.36]
0.250 [6.3]
+VIN
ENA 2
1
12
11
0.200 [5.08]
TYP. NON-CUM.
IN RTN
CASE
E
2
3
4
5
6
1.50 [38.1]
MQFL-
DC/DC CONVERTER
28Vin 3.3Vout @ 40A
+SNS
-SNS
10 1.260
[32.00]
ENA 1
7
OUT
SYNC OUT
S
DE IN USA
0.040 [1.02]
PIN
S/N 0205-301 CAGE 1WX10
0.42
[10.7]
2.50 .50]
76 [70.10]
0 [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) r
Pin Function
Pin Function
Pins Materar
Finish: ld oveel plate
1
2
3
4
5
6
Positive input
Input return
CASE
7
8
9
Positive output
Output return
- Sense
3)
All dimin ines (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: Meexceeds IPC-A-610C Class III
Print Labeling on Top Surface per Product Label Format Drawing
Sync output
Sync input
12 Enable 2
Product # MQFL-28E-1R5S
Phone 1-888-567-9596
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02/19/09
Page 14
MQFL-28E-1R5S
1.5V
40A
Output:
Current:
Technical Specification
0.300 [7.62]
0.140 [3.56]
1.15 [29.21]
0.250 [6.35]
0.250 [6.35]
TYP
1
2
3
4
5
6
+VIN
12
ENA 2
2.00
[50.80]
IN RTN
CASE
SHARE
+SNS
11
10
9
MQFL-28-1R5S-Y-HB
DC/DC CONVERTER
28Vin 3.3Vout @ 40A
0.5.08]
1.50
[38.10]
-SNS
ENA 1
NO
OUT RTN
+VOUT
SYNC OUT
SYNC IN
MADE IN USA
8
1.750
[44.4
S/N 0000000 D/C 3205-301 CAGE 1WX10
7
0.040
[1.02]
PIN
0.050 1.27]
0.220 [5.5
1.750 [44.45]
2.50 [63.50]
0.375 [9.52]
2.96 [75.2]
0
0.390 [9.91]
Ce Y
Ca
(variant oY)
Case W
(variant of Y)
0.250 [
0.250 [6.35]
0.200 [5.08]
0 [5.08]
TYP. NON-CUM.
NON-CUM.
0.040 [1.02]
PIN
.040 [1.02]
PIN
0.420 [10.7]
0.050 [1.27]
0.220 [5.59]
0.22
0.050
0.36 [9.
2.80 [71.1]
0.525 [13.33]
0.390
[9.91]
0.390
[9.91]
0.525
2.80 [71.1]
PIN DESIGNATIONS
Pin Function Pin Function
NOTES
1)
Pins 0.040” (1.diame
Pins Ml: Cop
2)
1
2
3
4
5
6
Positive input
Input return
CASE
Enable 1
Sync output
Sync input
7
8
9
Positive output
Output return
- Sense
Finish: er Nkel plate
All dimensinches (mm) Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm)
x.xxx +/-0.0.xx +/-0.25mm)
3)
4)
5)
6)
Weight: 2.8 oz (7ypical
Workmanship: Meeor exceeds IPC-A-610C Class III
Print Labeling on Top Surface per Product Label Format Drawing
10 + Sense
11 Share
12 Enable 2
Product # MQFL-28E-1R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005155 Rev. 2
02/19/09
Page 15
MQFL-28E-1R5S
1.5V
40A
Output:
Current:
Technical Specification
MilQor MQFL 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
1.5V
1.8V
2.5V
3.3V
5V
6V
9V
12V
12S
1
(1)
28V
(28S)
Single Output
(1R5S) (1R8S) (2R5S) (3R3S) (05S)
(06S) 9S)
MQFL-28
16-40Vin Cont.
16-50Vin 1s Trans.*
Absolute Max Vin = 60V
40A
40A
40A
40A
40A
0A
40A
40A
40A
40A
40A
40A
40A
40A
40A
40A
40A
A
40A
3
30A
30A
30A
30
30A
22A
24A
24A
0A
24A
20A
1
2
0A
1
A
20A
12A
16A
16A
13A
6A
13A
1A
13A
11A
A
11A
10A
10A
8A
8A
8
A
MQFL-28E
16-70Vin Cont.
16-80Vin 1s Trans.*
Absolute Max Vin =100V
MQFL-28V
16-40Vin Cont.
5.5-50Vin 1s Trans.*
Absolute Max Vin = 60V
6.5A
3.3A
3.3A
4A
MQFL-28VE
16-70Vin Cont.
5.5-80Vin 1s Trans.*
Absolute Max Vin = 100V
MQFL-270
155-400Vin Cont.
155-475Vin 0.1s Trans.*
Absolute Max Vin = 550V
10A
MQFL-270E
130-475Vin Cont.
130-520Vin 0.1s Trans.*
Absolute Max Vin = 600V
6.5A
5A
3.3A
2.7A
MQFL-270L
65-350Vin Cont.
65-475Vin 0.1s T
Absolute Max Vin = 55
6A
12V
2D)
15V
(15D)
3.3V/±1V
(3R312)
3.3V/±15V
(3R315T)
5V/±12V
(0512T)
5V/±15V
(0515T)
30V/±15V
(3015T)
Dual Outp
e Outp
MQFL-28
MQ
16-40Vin Cont.
24A
Total
8A
Total
16-40Vin
22A/
±1A
22A/
±0.8A
15A/
±1A
15A/
±0.8A
2.5A/
±0.8A
otal
16-50Vin 1s Trans.*
Absolute Max Vin = 60V
16-50Vin 1s
Absolute Max V
M-28E
MQFL-28E
-70Vin Con
Vin 1s Ts.*
1.
T
8A
Total
22A/
±1A
22A/
±0.8A
15A/
±1A
15A/
±0.8A
2.5A/
±0.8A
10A Total
16*
AbsoluV
e Max V100V
MQFL-28
8V
16-40VCont.
20A
Total
A
Tl
16-4t.
22A/
±1A
22A/
±0.8A
15A/
±1A
15A/
±0.8A
2.5A/
±0.8A
5.5-50Vi1s Tns.*
Absolute ax Vin = 60
5.5-501s Trans.*
Absolute Max Vin = 60V
MQFL-2VE
MQFL-28VE
16-70Vin Con
2
Total
8A
Total
6-70Vin Cont.
22A/
±1A
22A/
±0.8A
15A/
±1A
15A/
±0.8A
2.5A/
±0.8A
5.5-80Vin 1s ans.*
Absolute Max Vin = 100V
5.5-80Vin 1s Trans.*
Absolute Max Vin = 100V
MQFL-270
MQFL-270
155-400Vin Cont.
4A
155-400Vin Cont.
22A/
±1A
22A/
±0.8A
15A/
±1A
15A/
±0.8A
2.5A/
±0.8A
10A Totl 8A Total
155-475Vin 0.1s Trans.*
Absolute Max V550V
155-475Vin 0.1s Trans.*
Absolute Max Vin = 550V
MQFL-20
MQFL-270E
130-475n Cont.
20
Total
Total
6.5A
Total
130-475Vin Cont.
22A/
±1A
22A/
±0.8A
15A/
±1A
15A/
±0.8A
2.5A/
±0.8A
130-5.1s Tra
Absoln = 60
130-520Vin 0.1s Trans.*
Absolute Max Vin = 600V
MQFL
MQFL-270L
22A/
±1A
22A/
±0.8A
15A/
±1A
15A/
±0.8A
2.5A/
±0.8A
65-350Vin C
15A
Total
6A
Total
5A
Total
65-350Vin Cont.
65-475Vin 0.1
Absolute Max Vin =
65-475Vin 0.1s Trans.*
Absolute Max Vin = 550V
(75W
Total Output Power)
max
*Converters may be operated continuously at the highest transient input voltage, but some
component electrical and thermal stresses would be beyond MIL-HDBK-1547A guidelines.
†80% of total output current available on
any one output.
Product # MQFL-28E-1R5S
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005155 Rev. 2
02/19/09
Page 16
MQFL-28E-1R5S
1.5V
40A
Output:
Current:
Technical Specification
PART NUMBERING SYSTEM
The part numbering system for SynQor’s MilQor DC-DC converters follows the format showtable .
Output Voltage(s)
Input
Model
Name
Packae Outline/
Pin uratn
eening
Grade
Voltage
Range
Single
Output
Dual
Output
Triple
Output
1R5S
1R8S
2R5S
3R3S
05S
06S
7R5S
09S
28
28E
28V
28VE
3RT
3R315T
2T
3015T
U
X
Y
W
Z
C
ES
05D
12D
15D
MQFL
270
270E
270L
12S
15S
28S
Example:
MQFL-28E-1R5S
APPLICATION NOTES
A variety of application s and technicite papers can ownloaded in pdf format from the SynQor website.
PATENS
SynQor hfollowinpatents, ne or mwhicmight apply to this product:
,999,
94,1
6987
7,11
6,42
6,73,520
7,050,309
7,269,034
6,545,890
6,894,468
7,072,190
7,272,021
6,577,109
6,896,526
7,085,146
7,272,023
Contact SynQfor further inrmation:
Warranty
Phone:
8-849-0600
SynQor offers a two (2) year limited warranty. Complete warranty
information is listed on our website or is available upon request from
SynQor.
Tree: 67-9596
Fax:
978-0602
mail
power@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
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www.synqor.com
Doc.# 005-0005155 Rev. 2
02/19/09
Page 17
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