MQFL-28V-12S
Single Output
H
igH
R
eliability
DC-DC C
onveRteR
16-40V
Continuous Input
5.5-50V
Transient Input
12.0V
Output
8A
Output
to
90% @ 4A / 90% @ 8A
Efficiency
F
ull
P
oweR
o
PeRation
: -55ºC
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
at a fixed frequency, have no opto-isolators, and follow
conservative component derating guidelines.
They are
+125ºC
2
ENA
RE
SHA
+SNS
-SNS
RTN
OUT
T
+VOU
+VIN
N
IN RT
ILITY
STAB
1
ENA
designed and manufactured to comply with a wide range of
military standards.
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
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
• AS9100 and ISO 9001:2008 certified facility
•
Full component traceability
•
Temperature cycling
•
Constant acceleration
•
24, 96, 160 hour burn-in
•
Three level temperature screening
Product# MQFL-28V-12S
Phone 1-888-567-9596
T
C OU
SYN
C IN
SYN
VEr
FL
MQ
DC Con out@8A
1WX10
E
DC-
2.0V
CAG
in 1
-301
205
28V
/C 3
0D
000
000
S/n
-12
-28V
tEr
-ES
S-Y
D
esigneD
& M
anufactureD in the
usa
f
eaturing
Q
or
s
eal
™
h
i
-r
el
a
sseMbly
Features
•
•
•
•
•
•
•
•
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
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
www.SynQor.com
Doc.# 005-2MQ12VS Rev. F
11/22/13
Page 1
MQFL-28V-12S
Output:
12.0V
Current:
8A
Technical Specification
BLOCK DIAGRAM
+Vin
1
BOOST
CONVERTER
SWITCHES AND
CONTROL
REGULATION STAGE
CURRENT
SENSE
ISOLATION STAGE
7
+Vout
INPUT
RETURN
2
8
OUTPUT
RETURN
CASE
GATE DRIVERS
ISOLATION BARRIER
STABILITY
3
UVLO
GATE DRIVERS
CURRENT
LIMIT
PRIMARY
CONTROL
1
2
1
1
1
0
9
ENABLE 2
SHARE
+ SENSE
ENABLE 1
SYNC OUT
SYNC IN
4
5
6
MAGNETIC
SECONDARY
CONTROL
DATA COUPLING
−
SENSE
BIAS POWER
CONTROL
POWER
TRANSFORMER
TYPICAL CONNECTION DIAGRAM
1
External bulk capacitor
+VIN
IN RTN
STABILITY
ENA 1
SYNC OUT
SYNC IN
2
3
4
open
means
on
ENA 2 12
SHARE 11
28 Vdc
+
_
R
STABILITY
MQFL
+SNS 10
-SNS 9
OUT RTN 8
+VOUT 7
open
means
on
+
Load
5
6
_
C
STABILITY
Product# MQFL-28V-12S
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-2MQ12VS Rev. F
11/22/13
Page 2
MQFL-28V-12S
Output:
12.0V
Current:
8A
Technical Specification
Under-Voltage Transient Profile
20
V
ARM
(~18V)
Boost-Converter is armed (or re-armed)
when Vin exceeds this value
15
dV
≤
0.1V
μ
s
dt
Boost-Converter Operational Area
V
IN
10
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-12S
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-2MQ12VS Rev. F
11/22/13
Page 3
MQFL-28V-12S
Output:
12.0V
Current:
8A
MQFL-28V-12S 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 (≤100 µs)
Operating Case Temperature
Storage Case Temperature
Lead Temperature (20 s)
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 = 8 A (16 Vin)
Iout = 4 A (16 Vin)
Iout = 8 A (28 Vin)
Iout = 4 A (28 Vin)
Iout = 8 A (40 Vin)
Iout = 4 A (40 Vin)
Load Fault Power Dissipation
Short Circuit Power Dissipation
Product# MQFL-28V-12S
Technical Specification
Min. Typ. Max. Units Notes & Conditions
Vin=28V dc ±5%, Iout=8A, CL=0 µF, free running (see Note 10)
boost-converter non-operational unless otherwise specified
Group A
Subgroup
60
60
-0.8
-1.2
-500
-800
-55
-65
-1.2
16
5.5
14.75
13.80
0.50
54.0
50.0
2.0
28
28
15.50
14.40
1.10
56.8
51.4
5.3
110
2
25
80
11.88
11.82
-20
50
11.76
0
0
8.5
8.8
12.00
12.00
0
60
12.00
15
9.5
10.4
2.4
10
500
800
125
135
300
50
40
50
16.00
15.00
1.80
60.0
54.0
8.0
7.5
160
5
50
120
12.12
12.18
20
70
12.24
45
8
100
10.5
12.0
50
3,000
V
V
V
V
V
V
°C
°C
°C
V
V
V
V
V
V
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 1
HB Grade Products, See Notes 2 & 15
Continuous
Transient, 1 s; 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
See Note 3
Vin = 16 V; Iout = 8 A
Vin = 16 V, 28 V, 50 V
Vin = 16 V, 28 V, 50 V
Bandwidth = 100 kHz – 10 MHz; see Figure 14
Vout at sense leads
“
“ ; Vin = 16V, 28V, 40V; Iout=8A
“ ; Vout @ (Iout=0 A) - Vout @ (Iout=8 A)
“
Bandwidth = 10 MHz; CL=11µF
See Note 4
Vout ≤ 1.2 V
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
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,
11/22/13
-750
-375
375
50
750
200
500
500
500
10
2
8.0
6.0
3.0
-500
-500
See Note 6
Total Iout step = 4A‹-›8A, 0.8A‹-›4A; CL=11µF
“
See Note 7
Vin step = 16V‹-›50V; CL=11 µF; see Note 8
See Note 7
Vout = 1.2V-›10.8V
ENA1, ENA2 = 5 V; see Notes 9 & 12
ENA2 = 5 V; see Note 12
ENA1 = 5 V; see Note 12
250
6
0
5.5
3.0
1.5
86
88
86
87
85
85
90
91
90
90
89
89
14
16
24
24
Iout at current limit inception point; See Note 4
Vout ≤ 1.2 V
Doc.# 005-2MQ12VS Rev. F
2,
2,
2,
2,
2,
2,
2,
2,
3
3
3
3
3
3
3
3
Phone 1-888-567-9596
www.SynQor.com
Page 4
MQFL-28V-12S
Output:
12.0V
Current:
8A
MQFL-28V-12S ELECTRICAL CHARACTERISTICS (Continued)
Parameter
Min. Typ. Max. Units Notes & Conditions
Dielectric strength
500
500
500
100
100
44
500
500
2.0
-0.5
20
20
25
550
600
600
10
0.8
80
V
V
V
MΩ
MΩ
nF
kHz
kHz
V
V
%
mA
%
V
µA
V
µA
V
V
kHz
A
%
%
%
VSYNC OUT = 0.8 V
Output connected to SYNC IN of other MQFL unit
ISOLATION CHARACTERISTICS
Isolation Voltage
Input RTN to Output RTN
Any Input Pin to Case
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
Frequency Range
Logic Level High
Logic Level Low
Duty Cycle
Synchronization Output
Pull Down Current
Duty Cycle
Enable Control (ENA1 and ENA2)
Off-State Voltage
Module Off Pulldown Current
On-State Voltage
Module On Pin Leakage Current
Pull-Up Voltage
BOOST-CONVERTER OPERATION
Input Voltage Arming Value
Switching Frequency
Input Terminal Current Ripple (RMS)
Total Converter Efficiency
Iout = 4A (10 Vin)
Iout = 4A (16 Vin)
Iout = 8A (16 Vin)
RELIABILITY CHARACTERISTICS
Calculated MTBF (MIL-STD-217F2)
GB @ Tcase = 70ºC
AIF @ Tcase = 70ºC
WEIGHT CHARACTERISTICS
Device Weight
Vin=28V dc ±5%, Iout=8A, CL=0 µF, free running (see Note 10)
boost-converter non-operational unless otherwise specified
Technical Specification
Group A
Subgroup
1
1
1
1
1
1
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
See Note 5
See Note 5
See Note 5
1, 2, 3
See Note 5
1, 2, 3
See Note 5
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
75
0.8
80
2
3.2
17.5
600
4.0
18.0
670
1.0
86
88
88
20
4.5
18.8
740
Current drain required to ensure module is off
Imax draw from pin allowed with module still on
See Figure A
Vin = 16V; Iout = 8A
2200
390
79
10
3
Hrs.
10
3
Hrs.
g
Electrical Characteristics Notes
1. Converter will undergo input over-voltage shutdown.
2. Derate output power to 50% of rated power at Tcase = 135ºC (see Figure 5). 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 ≥ 10 µs.
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 ≥ 100 µs.
9. Input voltage rise time ≤ 250 µs.
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 300 ms. 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
Product# MQFL-28V-12S
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-2MQ12VS Rev. F
11/22/13
Page 5
