MQFL-28V-7R5S
Single Output
H
igH
R
eliability
DC-DC C
onveRteR
16-40V
Continuous Input
5.5-50V
Transient Input
7.5V
Output
13A
Output
to
90% @ 6.5A / 90% @ 13A
Efficiency
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F
ull
P
oweR
o
PeRation
: -55ºC
+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
TM
packaging approach ensures
survivability in the most hostile environments. Compatible
with the industry standard format, these converters operate
2
ENA
RE
SHA
at a fixed frequency, have no opto-isolators, and follow
conservative component derating guidelines.
They are
+VIN
N
IN RT
designed and manufactured to comply with a wide range of
military standards.
ILITY
STAB
1
ENA
MQ
DC Con ut@13A
0
000
000
S/n
T
C OU
SYN
C IN
SYN
X
o
E 1W
DC-
CAG
7.5V
01
Vin
05-3
32
28
D/C
-7
28V
tER
FL-
VER
S
-Y-E
R5S
+SNS
-SNS
RTN
OUT
T
+VOU
10
Meets all -704 and -1275D under-voltage transients
Design Process
MQFL series converters are:
•
Designed for reliability per NAVSO-P3641-A guidelines
•
Designed with components derated per:
— MIL-HDBK-1547A
— NAVSO P-3641A
Qualification Process
D
esigneD
& M
anufactureD in the
usa
f
eaturing
Q
or
s
eal
™
h
i
-r
el
a
sseMbly
Features
MQFL series converters are qualified to:
•
MIL-STD-810F
— consistent with RTCA/D0-160E
• SynQor’s First Article Qualification
— consistent with MIL-STD-883F
• SynQor’s Long-Term Storage Survivability Qualification
•
SynQor’s on-going life test
In-Line Manufacturing Process
•
•
•
•
•
•
•
•
Fixed switching frequency
No opto-isolators
Parallel operation with current share
Remote sense
Clock synchronization
Primary and secondary referenced enable
Continuous short circuit and overload protection
Input under-voltage and over-voltage shutdown
Specification Compliance
• AS9100 and ISO 9001:2008 certified facility
•
Full component traceability
•
Temperature cycling
•
Constant acceleration
•
24, 96, 160 hour burn-in
•
Three level temperature screening
Phone 1-888-567-9596
MQFL series converters (with MQME filter) are designed to meet:
•
MIL-HDBK-704-8 (A through F)
•
RTCA/DO-160 Section 16, 17, 18
•
MIL-STD-1275 (B, D)
•
DEF-STAN 61-5 (part 6)/(5, 6)
•
MIL-STD-461 (C, D, E, F)
•
RTCA/DO-160(E, F, G) Section 22
Doc.# 005-0005188 Rev. 2
08/14/13
Product# MQFL-28V-7R5S
www.SynQor.com
Page 1
MQFL-28V-7R5S
Output:
7.5V
Current:
13A
Technical Specification
BLOCK DIAGRAM
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+Vin
1
BOOST
CONVERTER
SWITCHES AND
CONTROL
REGULATION STAGE
CURRENT
SENSE
ISOLATION STAGE
7
+Vout
INPUT
RETURN
2
8
OUTPUT
RETURN
CASE
ISOLATION BARRIER
STABILITY
3
GATE DRIVERS
GATE DRIVERS
UVLO
CURRENT
LIMIT
1
2
1
1
1
0
ENABLE 2
SHARE
ENABLE 1
4
5
6
MAGNETIC
SYNC OUT
PRIMARY
CONTROL
SECONDARY
CONTROL
DATA COUPLING
+ SENSE
SYNC IN
9
−
SENSE
BIAS POWER
CONTROL
POWER
TRANSFORMER
TYPICAL CONNECTION DIAGRAM
1
2
3
4
5
6
+VIN
External bulk capacitor
IN RTN
ENA 1
ENA 2 12
SHARE 11
+SNS 10
-SNS 9
28 Vdc
+
_
STABILITY
SYNC OUT
SYNC IN
R
STABILITY
MQFL
open
means
on
+
C
STABILITY
open
means
on
OUT RTN 8
+VOUT 7
Load
_
Product# MQFL-28V-7R5S
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005188 Rev. 2
08/14/13
Page 2
MQFL-28V-7R5S
Output:
7.5V
Current:
13A
Technical Specification
Under-Voltage Transient Profile
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V
ARM
(~18V)
20
Boost-Converter is armed (or re-armed)
when Vin exceeds this value
15
Boost-Converter Operational Area
V
IN
10
dV
≤
0.1V
μ
s
dt
12.5V
5.5V
5
0
0
1.5
9
Time (s)
27
Under-Voltage Transient Profile showing when the boost-converter is guaranteed to be operational. Before the boost
converter will operate, it must first be armed (or re-armed) by making V
IN
greater than V
ARM
.
Note:
This Under-Voltage Transient Profile is designed to comply (with appropriate margins) with all initial-engagement surges,
starting or cranking voltage transients and under-voltage surges specified in:
• MIL-STD-704-8 (A through F)
• RTCA/DO-160
• MIL-STD-1275
• DEF-STAN 61-5 (part 6)/5 (operational portions)
Product# MQFL-28V-7R5S
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005188 Rev. 2
08/14/13
Page 3
MQFL-28V-7R5S
Output:
7.5V
Current:
13A
MQFL-28V-7R5S ELECTRICAL CHARACTERISTICS
Parameter
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
Operating
Reverse Bias (Tcase = 125ºC)
Reverse Bias (Tcase = -55ºC)
Isolation Voltage (I/O to case, I to O)
Continuous
Transient (≤100µs)
Operating Case Temperature
Storage Case Temperature
Lead Temperature (20s)
Voltage at ENA1, ENA2
INPUT CHARACTERISTICS
Operating Input Voltage Range
“
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 Peak to Peak
Operating Output Current Range
Operating Output Power Range
Output DC Current-Limit Inception
Short Circuit Output Current
Back-Drive Current Limit while Enabled
Back-Drive Current Limit while Disabled
Maximum Output Capacitance
DYNAMIC CHARACTERISTICS
Output Voltage Deviation Load Transient
For a Pos. Step Change in Load Current
For a Neg. Step Change in Load Current
Settling Time (either case)
Output Voltage Deviation Line Transient
For a Pos. Step Change in Line Voltage
For a Neg. Step Change in Line Voltage
Settling Time (either case)
Turn-On Transient
Output Voltage Rise Time
Output Voltage Overshoot
Turn-On Delay, Rising Vin
Turn-On Delay, Rising ENA1
Turn-On Delay, Rising ENA2
EFFICIENCY
Iout = 13A (16Vin)
Iout = 6.5A (16Vin)
Iout = 13A (28Vin)
Iout = 6.5A (28Vin)
Iout = 13A (40Vin)
Iout = 6.5A (40Vin)
Load Fault Power Dissipation
Short Circuit Power Dissipation
Technical Specification
Min. Typ. Max. Units Notes & Conditions
Vin=28V dc ±5%, Iout=13A, CL=0µF, free running (see Note 10) boost-converter
non-operational unless otherwise specified
Group A
Subgroup
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-500
-800
-55
-65
-1.2
16
5.5
500
800
125
135
300
50
40
50
V
V
°C
°C
°C
V
V
V
V
V
V
HB Grade Products, See Notes 2 & 15
28
28
14.75
13.80
0.50
54.0
50.0
2.0
15.50
14.40
1.10
56.8
51.4
5.3
110
2
25
80
16.00
15.00
1.80
60.0
54.0
8.0
7.5
160
5
50
120
7.58
7.60
20
45
7.65
40
13
100
16.5
17.5
Continuous
Transient, 1s; see Under-Voltage Transient Profile
See Note 3
1, 2, 3
4, 5, 6
1, 2, 3
1, 2, 3
1, 2, 3
1,
1,
1,
1,
1,
1,
1,
1,
2,
2,
2,
2,
2,
2,
2,
2,
3
3
3
3
3
3
3
3
V
V
V
A
mA
mA
mA
mA
V
V
mV
mV
V
mV
A
W
A
A
A
mA
µF
mV
mV
µs
mV
mV
µs
ms
%
ms
ms
ms
%
%
%
%
%
%
W
W
See Note 3
Vin = 16V; Iout = 13A
Vin = 16V, 28V, 50V
Vin = 16V, 28V, 50V
Bandwidth = 100kHz – 10MHz; see Figure 14
7.42
7.40
-20
25
7.35
0
0
13.5
13.5
7.50
7.50
0
35
7.50
20
Vout at sense leads
“
“ ; Vin = 16V, 28V, 40V; Iout=13A
“ ; Vout @ (Iout=0A) - Vout @ (Iout=13A)
“
Bandwidth = 10MHz; CL=11µF
See Note 4
Vout ≤ 1.2V
15
15.5
4
10
50
5,000
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
1, 2, 3
See Note 5
4, 5, 6
4, 5, 6
4, 5, 6
-550
-350
350
100
550
250
500
500
500
10
2
8.0
6.0
3.0
-500
-500
250
6
0
5.5
3.0
1.5
90
91
90
90
89
89
14
16
See Note 6
Total Iout step = 6.5A‹-›13A, 1.3A‹-›6.5A; CL=11µF
“
See Note 7
Vin step = 16V‹-›50V; CL=11µF; see Note 8
“
“
See Note 7
Vout = 0.75V-›6.75V
4, 5, 6
4, 5, 6
See Note 5
4, 5, 6
See Note 5
4, 5, 6
4, 5, 6
4, 5, 6
1,
1,
1,
1,
1,
1,
1,
1,
2,
2,
2,
2,
2,
2,
2,
2,
3
3
3
3
3
3
3
3
ENA1, ENA2 = 5V; see Notes 9 & 12
ENA2 = 5V; see Note 12
ENA1 = 5V; see Note 12
TBD
TBD
TBD
TBD
TBD
TBD
24
24
Iout at current limit inception point; See Note 4
Vout ≤ 1.2V
Doc.# 005-0005188 Rev. 2
Product# MQFL-28V-7R5S
Phone 1-888-567-9596
www.SynQor.com
08/14/13
Page 4
60
60
-0.8
-1.2
V
V
V
V
See Note 1
MQFL-28V-7R5S
Output:
7.5V
Current:
13A
MQFL-28V-7R5S ELECTRICAL CHARACTERISTICS (Continued)
Parameter
Min. Typ. Max. Units Notes & Conditions
Vin=28V dc ±5%, Iout=13A, CL=0µF, free running (see Note 10) boost-
converter non-operational unless otherwise specified
Technical Specification
Group A
Subgroup
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Product# MQFL-28V-7R5S
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005188 Rev. 2
08/14/13
ISOLATION CHARACTERISTICS
Isolation Voltage
Dielectric strength
Input RTN to Output RTN
500
V
1
Any Input Pin to Case
500
V
1
Any Output Pin to Case
500
V
1
Isolation Resistance (in rtn to out rtn)
100
MΩ
1
Isolation Resistance (any pin to case)
100
MΩ
1
Isolation Capacitance (in rtn to out rtn)
44
nF
1
FEATURE CHARACTERISTICS
Switching Frequency (free running)
500
550
600
kHz
1, 2, 3
Synchronization Input
Frequency Range
500
600
kHz
1, 2, 3
Logic Level High
2.0
10
V
1, 2, 3
Logic Level Low
-0.5
0.8
V
1, 2, 3
Duty Cycle
20
80
%
See Note 5
Synchronization Output
Pull Down Current
20
mA
VSYNC OUT = 0.8V
See Note 5
Duty Cycle
25
75
%
Output connected to SYNC IN of other MQFL unit
See Note 5
Enable Control (ENA1 and ENA2)
Off-State Voltage
0.8
V
1, 2, 3
Module Off Pulldown Current
80
µA
Current drain required to ensure module is off
See Note 5
On-State Voltage
2
V
1, 2, 3
Module On Pin Leakage Current
20
µA
Imax drawn from pin allowed, module on
See Note 5
Pull-Up Voltage
3.2
4.0
4.5
V
See Figure A
1, 2, 3
BOOST-CONVERTER OPERATION
Input Voltage Arming Value
17.5
18.0
18.8
V
1, 2, 3
Switching Frequency
600
670
740
kHz
1, 2, 3
Input Terminal Current Ripple (RMS)
0.9
A
Vin = 16V; Iout = 13A
Total Converter Efficiency
Iout = 15A (10Vin)
86
%
1, 2, 3
Iout = 15A (16Vin)
88
%
1, 2, 3
Iout = 30A (16Vin)
88
%
1, 2, 3
RELIABILITY CHARACTERISTICS
Calculated MTBF (MIL-STD-217F2)
GB @ Tcase = 70ºC
2200
10
3
Hrs.
AIF @ Tcase = 70ºC
390
10
3
Hrs.
WEIGHT CHARACTERISTICS
Device Weight
79
g
Electrical Characteristics Notes
1. Converter will undergo input over-voltage shutdown.
2. Derate output power to 50% of rated power at Tcase = 135ºC. 135ºC is above specified operating range.
3. High or low state of input voltage must persist for about 200µs to be acted on by the lockout or shutdown circuitry.
4. Current limit inception is defined as the point where the output voltage has dropped to 90% of its nominal value.
5. Parameter not tested but guaranteed to the limit specified.
6. Load current transition time ≥ 10µs.
7. Settling time measured from start of transient to the point where the output voltage has returned to ±1% of its final value.
8. Line voltage transition time ≥ 100µs.
9. Input voltage rise time ≤ 250µs.
10. Operating the converter at a synchronization frequency above the free running frequency will cause the converter’s efficiency to be slightly reduced and it
may also cause a slight reduction in the maximum output current/power available. For more information consult the factory.
11. SHARE pin outputs a power failure warning pulse during a fault condition. See Current Share section of the Control Features description.
12. After a disable or fault event, module is inhibited from restarting for 300ms. See Shut Down section of the Control Features description.
13. Only the ES and HB grade products are tested at three temperatures. The C- grade products are tested at one temperature. Please refer to the
Construction and Environmental Stress Screening Options table for details.
14. These derating curves apply for the ES and HB grade products. The C- grade product has a maximum case temperature of 70ºC and a maximum junction
temperature rise of 20ºC above Tcase.
15. The specified operating case temperature for ES grade products is -45ºC to 100ºC. The specified operating case temperature for C- grade products is 0ºC
to 70ºC.
Page 5
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