MQFL-28E-15D-W-C [SYNQOR]
DC-DC Regulated Power Supply Module, 2 Output, 120W, Hybrid, MODULE-12;
| 型号： | MQFL-28E-15D-W-C |
| 厂家： | 
SYNQOR WORLDWIDE HEADQUARTERS |
| 描述： | DC-DC Regulated Power Supply Module, 2 Output, 120W, Hybrid, MODULE-12 输出元件 |
| 文件： | 总20页 (文件大小：7987K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MQFL-28E-15D
Dual Output
HigH Reliability DC-DC ConveRteR
16-70V
16-80V
±15V
8A
89% @ 4A / 88% @ 8A
Continuous Input
Transient Input
Output
Total Output
Efficiency
Full PoweR oPeRation: -55ºC to +125ºC
@
The MilQor series of high-reliability DC-DC converters
brings SynQor’s field proven high-efficiency synchronous
rectifier technology to the Military/Aerospace industry.
TM
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 component derating guidelines. They are
designed and manufactured to comply with a wide range of
military standards.
2
A
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E
R
A
H
S
M
I
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T
T
U
O
V
-
N
T
R
T
U
O
N
I
V
+
T
U
O
V
+
N
T
R
N
I
E
S
A
C
1
A
N
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T
U
O
C
N
Y
S
N
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S
Design Process
D
f
esigneD & ManufactureD in the usa
MQFL series converters are:
•Designed for reliability per NAVSO-P3641-A guidelines
eaturing or sseMbly
Q
s
eal™
hi-rel
a
•Designed with components derated per:
— MIL-HDBK-1547A
Features
— NAVSO P-3641A
• Fixed switching frequency
• No opto-isolators
Qualification Process
• Parallel operation with current share
• Clock synchronization
• Primary and secondary referenced enable
• Continuous short circuit and overload protection
• Input under-voltage and over-voltage shutdown
• Output voltage trim
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
Specification Compliance
In-Line Manufacturing Process
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)
•AS9100 and ISO 9001:2008 certified facility
•Full component traceability
•Temperature cycling
•Constant acceleration
•24, 96, 160 hour burn-in
• RTCA/DO-160(E, F, G) Section 22
•Three level temperature screening
Product# MQFL-28E-15D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005290 Rev. C
08/20/13
Page 1
MQFL-28E-15D
Output: ±15V
Current: 8A Total
Technical Specification
BLOCK DIAGRAM
REGULATION STAGE
ISOLATION STAGE
7
CURRENT
SENSE
1
POSITIVE
OUTPUT
POSITIVE
INPUT
T1
T2
T2
T1
T2
2
8
INPUT
RETURN
OUTPUT
RETURN
T1
3
CASE
9
GATE DRIVERS
NEGATIVE
OUTPUT
UVLO
OVSD
GATE DRIVERS
CURRENT
LIMIT
4
MAGNETIC
12
ENABLE 2
ENABLE 1
PRIMARY
CONTROL
5
11
SHARE
DATA COUPLING
SECONDARY
CONTROL
SYNC OUTPUT
10
6
TRIM
SYNC INPUT
BIAS POWER
CONTROL
POWER
POSITIVE
OUTPUT
TRANSFORMER
TYPICAL CONNECTION DIAGRAM
1
12
+VIN
ENA 2
open
means
on
2
11
10
9
IN RTN
SHARE
TRIM
3
CASE
+
+
--
28 Vdc
MQFL
4
ENA 1
-VOUT
Load
Load
--
+
5
6
8
open
means
on
SYNC OUT
SYNC IN
OUT RTN
+VOUT
7
--
Product# MQFL-28E-15D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005290 Rev. C
08/20/13
Page 2
MQFL-28E-15D
Output: ±15V
Current: 8A Total
Technical Specification
MQFL-28E-15D ELECTRICAL CHARACTERISTICS
Parameter
Min. Typ. Max. Units Notes & Conditions
Group A
Vin=28V dc ±5%, +Iout = -Iout = 4A, CL=0µF, free
Subgroup
running (see Note 10) unless otherwise specified
(see Note 14)
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
Operating
Reverse Bias (Tcase = 125ºC)
Reverse Bias (Tcase = -55ºC)
Isolation Voltage
100
100
-0.8
-1.2
V
V
V
V
See Note 1
Input/Output to Case, Input to Output
HB Grade Products, See Notes 2 & 17
Continuous
Transient (≤100µs)
Operating Case Temperature
Storage Case Temperature
Lead Temperature (20s)
-500
-800
-55
500
800
125
135
300
50
V
V
°C
°C
°C
V
-65
Voltage at ENA1, ENA2
-1.2
INPUT CHARACTERISTICS
Operating Input Voltage Range (continuous)
Operating Input Voltage Range (transient, 1s)
Input Under-Voltage Lockout
Turn-On Voltage Threshold
16
16
28
28
70
80
V
V
1, 2, 3
4, 5, 6
See Note 3
14.75
13.80
0.50
15.50
14.40
1.10
16.00
15.00
1.80
V
V
V
1, 2, 3
1, 2, 3
1, 2, 3
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 (peak to peak)
OUTPUT CHARACTERISTICS
Output Voltage Set Point (Tcase = 25ºC)
Positive Output
Negative Output
Output Voltage Set Point Over Temperature
Positive Output
See Note 16
90.0
82.0
3.0
95.0
86.0
9.0
100.0
90.0
15.0
9.5
160
5
V
V
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
A
Vin = 16V; +Iout = -Iout = 4A
110
2
25
40
mA
mA
mA
mA
Vin = 16V, 28V, 70V
Vin = 16V, 28V, 70V
Bandwidth = 100kHz – 10MHz; see Figure 20
50
60
See Note 12
See Note 12
+14.85 +15.00 +15.15
-15.15 -15.00 -14.85
V
V
1
1
+14.78 +15.00 +15.22
-15.22 -15.00 -14.78
V
V
2, 3
2, 3
Negative Output
Positive Output Voltage Line Regulation
Positive Output Voltage Load Regulation
Total Positive Output Voltage Range
Output Voltage Cross Regulation
Output Voltage Ripple and Noise Peak to Peak
Total Operating Current Range
Single Output Operatin 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)
-20
65
14.70
250
0
80
15.00
450
20
20
95
15.30
750
80
8
6.4
120
10.1
10.9
mV
mV
V
mV
mV
A
A
W
A
A
A
mA
µF
Vin = 16V, 28V, 70V; See Note 12
+Vout@(+Iout=-Iout=0A) - +Vout@(+Iout=-Iout=4A); See Note 12
See Note 12
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
1, 2, 3
See Note 5
-Vout@(+Iout=-Iout=1.6A) - -Vout@(+Iout=6.4A, -Iout=1.6A); See Notes 11, 12
Bandwidth = 100kHz - 10MHz; CL=11µF on both outputs
(+Iout) + (-Iout)
Maximum +Iout or -Iout
Total on both outputs
+Iout + -Iout; +Iout = -Iout; See Note 4
+Vout ≤ 1.2V
0
0
0
8.2
8.8
9.2
9.8
2.5
10
60
3,000
Total on both outputs
See Note 6
-500
-300
300
50
mV
mV
µs
Total Iout step = 4A‹-›8A, 0.8A‹-›4A; CL=11µF on both outputs
4, 5, 6
4, 5, 6
4, 5, 6
500
200
“
See Note 7
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)
See Note 8
-500
-500
500
500
500
mV
mV
µs
Vin step = 16V‹-›50V; CL=11µF on both outputs
4, 5, 6
4, 5, 6
See Note 5
“
250
See Note 7
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
6
0
5.5
3.0
1.5
10
2
8.0
6.0
3.0
ms
%
ms
ms
ms
+Vout = 1.5V-›13.5V
4, 5, 6
See Note 5
4, 5, 6
4, 5, 6
4, 5, 6
ENA1, ENA2 = 5V; See Note 9
ENA2 = 5V
ENA1 = 5V
Product# MQFL-28E-15D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005290 Rev. C
08/20/13
Page 3
MQFL-28E-15D
Output: ±15V
Current: 8A Total
Technical Specification
MQFL-28E-15D ELECTRICAL CHARACTERISTICS (Continued)
Parameter
Min. Typ. Max. Units Notes & Conditions
Group A
Vin=28V dc ±5%, +Iout = -Iout = 4A, CL=0µF, free
running (see Note 10) unless otherwise specified
Subgroup
(see Note 14)
EFFICIENCY
Iout = 8A (16Vin)
Iout = 4A (16Vin)
Iout = 8A (28Vin)
Iout = 4A (28Vin)
Iout = 8A (40Vin)
Iout = 4A (40Vin)
Iout = 8A (70Vin)
Load Fault Power Dissipation
Short Circuit Power Dissipation
ISOLATION CHARACTERISTICS
Isolation Voltage
83
87
84
86
83
85
79
88
90
88
89
87
88
84
18
21
%
%
%
%
%
%
%
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
31
32
Iout at current limit inception point; See Note 4
+Vout ≤ +1.2V; -Vout ≥ -1.2V
Dielectric strength
Input RTN to Output RTN
Any Input Pin to Case
500
500
500
100
100
V
V
V
MΩ
MΩ
nF
1
1
1
1
1
1
Any Output Pin to Case
Isolation Resistance (input rtn to output rtn)
Isolation Resistance (any pin to case)
Isolation Capacitance (input rtn to output rtn)
FEATURE CHARACTERISTICS
Switching Frequency (free running)
Synchronization Input
44
500
550
600
kHz
1, 2, 3
Frequency Range
Logic Level High
Logic Level Low
Duty Cycle
500
2.0
-0.5
20
700
10
0.8
80
kHz
V
V
1, 2, 3
1, 2, 3
1, 2, 3
%
See Note 5
Synchronization Output
Pull Down Current
Duty Cycle
20
25
mA
%
VSYNC OUT = 0.8V
Output connected to SYNC IN of other MQFL unit
See Note 5
See Note 5
75
Enable Control (ENA1 and ENA2)
Off-State Voltage
Module Off Pulldown Current
On-State Voltage
0.8
V
µA
V
1, 2, 3
See Note 5
1, 2, 3
80
2
Current drain required to ensure module is off
Module On Pin Leakage Current
Pull-Up Voltage
Output Voltage Trim Range
RELIABILITY CHARACTERISTICS
Calculated MTBF (MIL-STD-217F2)
GB @ Tcase = 70ºC
20
4.5
0.5
µA
V
V
Imax drawn from pin allowed, module on
See Figure A
(+Vout) - 15V; See Figure E
See Note 5
1, 2, 3
See Note 5
3.2
-2.0
4.0
2800
420
103 Hrs.
103 Hrs.
AIF @ Tcase = 70ºC
WEIGHT CHARACTERISTICS
Device Weight
79
g
Electrical Characteristics Notes
1. Converter will undergo input over-voltage shutdown.
2. Derate output power for continuous operation per 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 ≥ 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 slightly reduce the converter’s efficiency and may
also cause a slight reduction in the maximum output current/power available. For more information consult the factory.
11. The regulation stage operates to control the positive output. The negative output displays cross regulation.
12. All +Vout and -Vout voltage measurements are made with Kelvin probes on the output leads.
13. SHARE pin outputs a power failure warning pulse during a fault condition. See Current Share section.
14. 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.
15. These derating curves apply for the ES and HB grade products. The C- grade product has a maximum case temperature of 70ºC.
16. Input Over Voltage Shutdown test is run at no load, full load is beyond derating condition and could cause damage at 125ºC.
17. 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-28E-15D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005290 Rev. C
08/20/13
Page 4
MQFL-28E-15D
Output: ±15V
Current: 8A Total
Technical Figures
25
20
15
10
5
100
95
90
85
80
75
70
65
60
16 Vin
28 Vin
40 Vin
70 Vin
16 Vin
28 Vin
40 Vin
70 Vin
0
0
12
24
36
48
60
72
84
96
108
120
0
20
40
60
80
100
120
TotalOutput Power (W)
TotalOutput Power (W)
Figure 1: Efficiency vs. output power, from zero load to full load with
equal load on the +15V and -15V outputs at minimum, nominal, and
maximum input voltage at 25°C.
Figure 2: Power dissipation vs. output power, from zero load to full load
with equal load on the +15V and -15V outputs at minimum, nominal,
and maximum input voltage at 25°C.
20
18
16
14
12
10
8
100
95
90
85
80
75
6
16 Vin
16 Vin
70
28 Vin
4
2
0
28 Vin
40 Vin
70 Vin
40 Vin
65
70 Vin
60
6.4/0
6.4/0
5.6/0.8 4.8/1.6
4/2.4
3.2/3.2
2.4/4
1.6/4.8 0.8/5.6
-Iout
0/6.4
5.6/0.8 4.8/1.6
4/2.4
3.2/3.2
2.4/4
1.6/4.8 0.8/5.6
0/6.4
Load Current (A), +Iout
/
-Iout
Load Current (A), +Iout
/
Figure 3: Efficiency vs. output current, with total output current fixed at
80% load (96 W) and loads split as shown between the +15V and -15V
outputs at minimum, nominal, and maximum input voltage at 25°C.
Figure 4: Power dissipation vs. output current, with total output current
fixed at 80% load (96 W) and loads split as shown between the +15V
and -15V outputs at minimum, nominal, and max input voltage at 25°C.
20
18
16
14
12
10
100
95
90
85
80
75
16 Vin
28 Vin
40 Vin
70 Vin
70
65
60
8
16 Vin
28 Vin
40 Vin
70 Vin
6
4
-55ºC
25ºC
125ºC
-55ºC
25ºC
125ºC
Case Temperature (ºC)
Case Temperature (ºC)
Figure 5: Efficiency at 60% load (2.4A load on +15V and 2.4A load on
Figure 6: Power dissipation at 60% load (2.4A load on +15V and 2.4A
-15V) versus case temperature for Vin = 16V, 28V, 40V, and 70V.
load on -15V) versus case temperature for Vin =16V, 28V, 40V, and 70V.
Product# MQFL-28E-15D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005290 Rev. C
08/20/13
Page 5
MQFL-28E-15D
Output: ±15V
Current: 8A Total
Technical Figures
15.8
-15.8
-15.6
-15.4
-15.2
-15.0
-14.8
-14.6
-14.4
-14.2
15.8
15.6
15.4
15.2
15.0
14.8
14.6
14.4
14.2
-15.8
-15.6
-15.4
-15.2
-15.0
-14.8
-14.6
-14.4
-14.2
Inputvoltage has virtually no
effecton cross regulation
Inputvoltage has virtually no
effecton cross regulation
15.6
15.4
15.2
15.0
14.8
14.6
+Vout
+Vout
-Vout
14.4
-Vout
14.2
6.4 / 1.6
4.8 / 3.2
4 / 4
+IOUT (A)
3.2 / 4.8
1.6 / 6.4
6.4 / 0
4.8 / 1.6
3.2 / 3.2
1.6 / 4.8
0 / 6.4
/
-IOUT (A)
+IOUT (A) / -IOUT (A)
Figure 7: Load regulation vs. load current with power fixed at full load
(120W) and load currents split as shown between the +15V and -15V
outputs, at nominal input voltage and Tcase = 25ºC.
Figure 8: Load regulation vs. load current with power fixed at 80% load
(96W) and load currents split as shown between the +15V and -15V
outputs, at nominal input voltage and Tcase = 25ºC.
15.8
15.6
15.4
15.2
15.0
14.8
14.6
14.4
14.2
-15.8
-15.6
-15.4
-15.2
-15.0
-14.8
-14.6
-14.4
-14.2
15.8
15.6
15.4
15.2
15.0
14.8
14.6
14.4
14.2
-15.8
-15.6
-15.4
-15.2
-15.0
-14.8
-14.6
-14.4
-14.2
Inputvoltage has virtually no
effecton cross regulation
Inputvoltage has virtually no
effecton cross regulation
+Vout
-Vout
+Vout
-Vout
0
24
48
72
96
120
0
24
48
72
96
120
TotalOutput Power (W)
TotalOutput Power (W)
Figure 9: Load regulation vs. total output power from zero to to full
load where +Iout equals three times -Iout at nominal input voltage and
Tcase = 25ºC.
Figure 10: Load regulation vs. total output power from zero to to full
load where -Iout equals three times +Iout at nominal input voltage and
Tcase = 25ºC.
10
8
150
120
90
60
30
0
16
14
12
10
8
6
Tmax = 105ºC, Vin = 70
Tmax = 105ºC, Vin = 50
Tmax = 105ºC, Vin = 28
Tmax = 125ºC, Vin = 70
Tmax = 125ºC, Vin = 50
Tmax = 125ºC, Vin = 28
Tmax = 145ºC, Vin = 70
Tmax = 145ºC, Vin = 50
Tmax = 145ºC, Vin = 28
4
6
4
2
2
0
0
25
35
45
55
65
75
85
95 105 115 125 135 145
0
2
4
6
8
10
12
Load Current (A)
Case Temperature (ºC)
Figure 11: Total Output Current / Total Output Power derating curve as
a function of Tcase and the maximum desired power MOSFET junction
temperature (see Note 15).
Figure 12: Positive output voltage vs. total load current, evenly split,
showing typical current limit curves at Vin = 28V.
Product# MQFL-28E-15D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005290 Rev. C
08/20/13
Page 6
MQFL-28E-15D
Output: ±15V
Current: 8A Total
Technical Figures
Figure 13: Turn-on transient at full rated load current (resistive load)
(5ms/div). Input voltage pre-applied. Ch 1: +Vout (5V/div); Ch 2: -Vout
(5V/div); Ch 3: Enable1 input (5V/div).
Figure 14: Turn-on transient at zero load current (5ms/div). Input
voltage pre-applied. Ch 1: +Vout (5V/div); Ch 2: -Vout (5V/div); Ch 3:
Enable1 input (5V/div).
; : .
ceramic cap and 10μF, 100mΩ ESR tantalum cap. Ch 1: +Vout (500mV/div);
Ch 2: +Iout (5A/div); Ch 3: -Vout (500mV/div); Ch 4: -Iout (5A/div).
cap and 10μF, 100mΩ ESR tantalum cap. Ch 1: +Vout (500mV/div); Ch 2:
+Iout (5A/div); Ch 3: -Vout (500mV/div); Ch 4: -Iout (5A/div).
Product# MQFL-28E-15D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005290 Rev. C
08/20/13
Page 7
MQFL-28E-15D
Output: ±15V
Current: 8A Total
Technical Figures
Figure 19: 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: -Vout (500mV/div); Ch 3: Vin (20V/div).
Figure 20: Test set-up diagram showing measurement points for Input
Terminal Ripple Current (Figure 21) and Output Voltage Ripple (Figure
22).
Figure 22: Output voltage ripple, +Vout (Ch 1) and -Vout (Ch 2), at nominal
input voltage and full load current evenly split (20mV/div). Load capacitance:
1μF ceramic cap and 10μF tantalum cap. Bandwidth: 10MHz. See Figure 20.
Figure 21: Input terminal current ripple, ic, at full rated output current
and nominal input voltage with SynQor MQ filter module (50mA/div).
Bandwidth: 20MHz. See Figure 20.
Figure 23: Rise of output voltage after the removal of a short circuit
across the positive output terminals. Ch 1: +Vout (5V/div); Ch 2: -Vout
(5V/div); Ch 3: +Iout (10A/div).
Figure 24: SYNC OUT vs. time, driving SYNC IN of a second SynQor
MQFL converter.
Product# MQFL-28E-15D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005290 Rev. C
08/20/13
Page 8
MQFL-28E-15D
Output: ±15V
Current: 8A Total
Technical Figures
1
1
0.1
0.01
0.1
16Vin
28Vin
40Vin
16Vin
28Vin
40Vin
0.01
0.001
0.001
10
100
1,000
Hz
10,000
100,000
10
100
1,000
Hz
10,000
100,000
Figure 25: Magnitude of incremental output impedance of +15V output
(+Zout = +vout /+iout) for minimum, nominal, and maximum input
voltage at full rated power.
Figure 26: Magnitude of incremental output impedance of -15V output
(-Zout = -vout /-iout) for minimum, nominal, and maximum input
voltage at full rated power.
voltage at full rated power.
voltage at full rated power.
voltage at full rated power.
voltage at full rated power.
Product# MQFL-28E-15D
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Doc.# 005-0005290 Rev. C
08/20/13
Page 9
MQFL-28E-15D
Output: ±15V
Current: 8A Total
Technical Figures
100
10
1
16Vin
0.1
28Vin
40Vin
0.01
10
100
1,000
Hz
10,000
100,000
Figure 31: Magnitude of incremental input impedance (Zin = vin/iin)
for minimum, nominal, and maximum input voltage at full rated power
with 50% / 50% split.
Figure 32: High frequency conducted 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.
Figure 33: High frequency conducted emissions of MQFL-28-05S,
5Vout module at 120W output with MQFL-28-P filter, as measured
with Method CE102. Limit line shown is the ‘Basic Curve’for all
applications with a 28V source.
Product# MQFL-28E-15D
Phone 1-888-567-9596
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Doc.# 005-0005290 Rev. C
08/20/13
Page 10
MQFL-28E-15D
Output: ±15V
Current: 8A Total
Application Section
vided, as well as an input over-voltage shutdown. There is also
an output current limit that is nearly constant as the load imped-
ance decreases to a short circuit (i.e., there is not fold-back
or fold-forward characteristic to the output current under this
condition). When a load fault is removed, the output voltage
rises exponentially to its nominal value without an overshoot.
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 trans-
formers to provide the functions of input/output isolation and
voltage transformation to achieve the output voltage required.
The MQFL converter’s control circuit does not implement an out-
put over-voltage limit or an over-temperature shutdown.
In the dual output converter there are two secondary windings
in the transformer of the isolation stage, one for each output.
There is only one regulation stage, however, and it is used
to control the positive output. The negative output therefore
displays “Cross-Regulation”, meaning that its output voltage
depends on how much current is drawn from each output.
The following sections describe the use and operation of addi-
tional control features provided by the MQFL converter.
CONTROL FEATURES
ENABLE: The MQFL converter has two enable pins. Both must
have a logic high level for the converter to be enabled. A logic
low on either pin will inhibit the converter.
Both the positive and the negative outputs share a common
OUTPUT RETURN pin.
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.
The ENA1 pin (pin 4) is referenced with respect to the convert-
er’s input return (pin 2). The ENA2 pin (pin 12) is referenced
with respect to the converter’s output return (pin 8). This per-
mits the converter to be inhibited from either the input or the
output side.
Regardless of which pin is used to inhibit the converter, the
regulation and the isolation stages are turned off. However,
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 the latter case.
Rectification of the isolation stage’s output is accomplished with
synchronous rectifiers. These devices, which are MOSFETs
with a 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
voltages.
Both enable pins are internally pulled high so that an open con-
nection on both pins will enable the converter. Figure A shows
the equivalent circuit looking into either enable pins. It is TTL
compatible.
Besides improving efficiency, the synchronous rectifiers permit
operation down to zero load current. There is no longer a need
for a minimum load, as is typical for converters that use diodes
for rectification. The synchronous rectifiers actually permit a
negative load current to flow back into the converter’s output
terminals if the load is a source of short or long term energy.
The MQFL converters employ a “back-drive current limit” to
keep this negative output terminal current small.
5.6V
82K
1N4148
PIN 4
(OR PIN 12)
There is a control circuit on both the input and output sides
of the MQFL converter that determines the conduction state
of the power switches. These circuits communicate with each
other across the isolation barrier through a magnetically coupled
device. No opto-isolators are used.
ENABLE
TO ENABLE
CIRCUITRY
250K
125K
2N3904
A separate bias supply provides power to both the input and
output control circuits. Among other things, this bias supply
permits the converter to operate indefinitely into a short circuit
and to avoid a hiccup mode, even under a tough start-up condi-
tion.
PIN 2
(OR PIN 8)
IN RTN
Figure A: Circuit diagram shown for reference only, actual circuit
components may differ from values shown for equivalent circuit.
An input under-voltage lockout feature with hysteresis is pro-
Product# MQFL-28E-15D
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Doc.# 005-0005290 Rev. C
08/20/13
Page 11
MQFL-28E-15D
Output: ±15V
Current: 8A Total
Application Section
SYNCHRONIZATION: The MQFL converter’s switching fre-
quency can be synchronized to an external frequency source
that is in the 500 kHz to 700 kHz range. A pulse train at the
desired frequency should be applied to the SYNC IN pin (pin
6) with respect to the INPUT RETURN (pin 2). This pulse train
should have a duty cycle in the 20% to 80% range. Its low
value should be below 0.8V to be guaranteed to be interpreted
as a logic low, and its high value should be above 2.0V to be
guaranteed to be interpreted as a logic high. The transition time
between the two states should be less than 300ns.
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.
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.
If the MQFL converter is not to be synchronized, the SYNC IN
pin should be left open circuit. The converter will then operate
in its free-running mode at a frequency of approximately 550
kHz.
Whether or not converters are paralleled, the voltage at the
SHARE pin could be used to monitor the approximate aver-
age 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
If, due to a fault, the SYNC IN pin is held in either a logic low
or logic high state continuously, the MQFL converter will revert
to its free-running frequency.
The MQFL converter also has a SYNC OUT pin (pin 5). This
output can be used to drive the SYNC IN pins of as many as
ten (10) other MQFL converters. The pulse train coming out
of SYNC OUT has a duty cycle of 50% and a frequency that
matches the switching frequency of the converter with which
it is associated. This frequency is either the free-running fre-
quency if there is no synchronization signal at the SYNC IN pin,
or the synchronization frequency if there is.
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: 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.
The SYNC OUT signal is available only when the DC input volt-
age is above approximately 12V and when the converter is not
inhibited through the ENA1 pin. An inhibit through the ENA2 pin
will not turn the SYNC OUT signal off.
5V
NOTE: An MQFL converter that has its SYNC IN pin driven by
the SYNC OUT pin of a second MQFL converter will have its start
of its switching cycle delayed approximately 180 degrees rela-
tive to that of the second converter.
5K
SYNC OUT
FROM SYNC
CIRCUITRY
PIN 5
Figure B shows the equivalent circuit looking into the SYNC IN
pin. Figure C shows the equivalent circuit looking into the
SYNC OUT pin.
IN RTN
PIN 2
OPEN COLLECTOR
OUTPUT
5V
Figure C: Equivalent circuit looking into SYNC OUT pin with
respect to the IN RTN (input return) pin.
5K
TO SYNC
CIRCUITRY
PIN 6
SYNC IN
IN RTN
5K
PIN 2
Figure B: Equivalent circuit looking into the SYNC IN pin with
respect to the IN RTN (input return) pin.
Product# MQFL-28E-15D
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Page 12
MQFL-28E-15D
Output: ±15V
Current: 8A Total
Application Section
OUTPUT VOLTAGE TRIM: If desired, it is possible to increase
the MQFL dual converter’s output voltage above its nominal
value. To increase the output voltage a resistor, Rup, should
be connected between the TRIM pin (pin 10) and the OUTPUT
RETURN pin (pin 8), as shown in Figure D. The value of this
resistor should be determined according to the following equa-
tion:
10,000
1,000
100
10
Vnom – 2.5
Vout – Vnom
– 2 x Vnom + 5
Rup = 10 x
(
)
Trim Down Configuration
Trim Up Configuration
where:
Vnom = the converter’s nominal output voltage,
Vout = the desired output voltage (greater than Vnom), and
Rup is in kiloOhms (kW).
1
-2.5
-2
-1.5
-1
-0.5
0
0.5
1
Change in Vout (V)
The maximum value of output voltage that can be achieved is
0.5V above the nominal output.
Figure E: Output Voltage Trim Graph
To decrease the output voltage a resistor, Rdown, should be
connected between the TRIM pin and the POSITIVE OUTPUT pin
(pin 7), as shown in Figure D. The value of this resistor should
be determined according to the following equation:
INPUT UNDER-VOLTAGE LOCKOUT: The MQFL converter
has an under-voltage lockout feature that ensures the converter
will be off if the input voltage is too low. The threshold of input
voltage at which the converter will turn on is higher that the
threshold at which it will turn off. In addition, the MQFL con-
verter will not respond to a state of the input voltage unless it
has remained in that state for more than about 200µs. This hys-
teresis and the delay ensure proper operation when the source
impedance is high or in a noisy environment.
Vnom
2.5
Vnom – 2.5
Vnom – Vout
– 1
– 5
Rdown = 10 x
x
[
]
[
]
where:
Vnom = the converter’s nominal output voltage,
Vout = the desired output voltage (less than Vnom), and
INPUT 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.
Rdown is in kiloOhms (kW).
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 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. Factory trimmed converters are available
by request.
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
1
12
+VIN
ENA 2
SHARE
open
means
on
2
11
10
9
IN RTN
3
CASE
TRIM
+
+
--
28 Vdc
Rup
Rdown
MQFL
4
5
6
ENA 1
-VOUT
Load
Load
--
+
8
open
means
on
SYNC OUT
SYNC IN
OUT RTN
+VOUT
7
--
Figure D: Typical connection for output voltage trimming.
Product# MQFL-28E-15D
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Doc.# 005-0005290 Rev. C
08/20/13
Page 13
MQFL-28E-15D
Output: ±15V
Current: 8A Total
Application Section
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.
When the converter is mounted on a metal plate, the plate will
help to make the converter’s case bottom a uniform tempera-
ture. How well it does so depends on the thickness of the plate
and on the thermal conductance of the interface layer (e.g. ther-
mal grease, thermal pad, etc.) between the case and the plate.
Unless this is done very well, it is important not to mistake the
plate’s temperature for the maximum case temperature. It is
easy for them to be as much as 5-10ºC different at full power
and at high temperatures. It is suggested that a thermocouple
be attached directly to the converter’s case through a small hole
in the plate when investigating how hot the converter is getting.
Care must also be made to ensure that there is not a large
thermal resistance between the thermocouple and the case due
to whatever adhesive might be used to hold the thermocouple
in place.
BACK-DRIVE CURRENT LIMIT: Converters that use MOSFETs
as synchronous rectifiers are capable of drawing a negative cur-
rent 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 converters 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.
To avoid any problems that might arise due to back-drive cur-
rent, 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 converter may operate properly down to zero load,
but its absolute value (see the Electrical Characteristics page) is
small compared to the converter’s rated output current.
INPUT SYSTEM INSTABILITY: This condition can occur
because any DC/DC converter appears incrementally as a nega-
tive resistance load. A detailed application note titled “Input
System Instability” is available on the SynQor website which
provides an understanding of why this instability arises, and
shows the preferred solution for correcting it.
THERMAL CONSIDERATIONS: Figure 11 shows the
suggested Power Derating Curves for this converter as a
function of the case temperature and the maximum desired
power MOSFET junction temperature. All other components
within the converter are cooler than its hottest MOSFET.
The Mil-HDBK-1547A component derating guideline calls for
a maximum component temperature of 105ºC. Figure 11
therefore has one power derating curve that ensures this limit
is maintained. It has been SynQor’s extensive experience that
reliable long-term converter operation can be achieved with
a maximum component temperature of 125ºC. In extreme
cases, a maximum temperature of 145ºC is permissible, but not
recommended for long-term operation where high reliability is
required. Derating curves for these higher temperature limits
are also included in Figure 11. The maximum case temperature
at which the converter should be operated is 135ºC.
Product# MQFL-28E-15D
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Doc.# 005-0005290 Rev. C
08/20/13
Page 14
MQFL-28E-15D
Output: ±15V
Current: 8A Total
Stress Screening
CONSTRUCTION AND ENVIRONMENTAL STRESS SCREENING OPTIONS
C-Grade
ES-Grade
HB-Grade
Consistent with
MIL-STD-883F
Screening
specified from
specified from
(
0spºeCcitfioe+d7f0roºmC ) (-45 ºC to +100 ºC) (-55 ºC to +125 ºC
)
Element Evaluation
No
Yes
No
No
Yes
Yes
Internal Visual
Temperature Cycle
Constant Acceleration
*
Yes
Yes
Condition B
(-55 ºC to +125 ºC)
Condition C
(-65 ºC to +150 ºC)
Method 1010
Method 2001
(Y1 Direction)
Condition A
(5000g)
500g
Burn-in
Method 1015
24 Hrs @ +125 ºC
96 Hrs @ +125 ºC
160 Hrs @ +125 ºC
Final Electrical Test
Method 5005 (Group A)
+25 ºC
Full QorSeal
*
-45, +25, +100 ºC
Full QorSeal
Yes
-55, +25, +125 ºC
Full QorSeal
Yes
Mechanical Seal,
Thermal, and
Coating Process
External Visual
2009
Construction Process
QorSeal
QorSeal
QorSeal
* Per IPC-A-610 Class 3
MilQor converters and filters are offered in three variations of environmental stress screening options. All MilQor converters use SynQor’s proprietary
QorSeal™ Hi-Rel assembly process that includes a Parylene-C coating of the circuit, a high performance thermal compound filler, and a nickel barrier
gold plated aluminum case. Each successively higher grade has more stringent mechanical and electrical testing, as well as a longer burn-in cycle. The ES-
and HB-Grades are also constructed of components that have been procured through an element evaluation process that pre-qualifies each new batch of
devices.
Product# MQFL-28E-15D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005290 Rev. C
08/20/13
Page 15
MQFL-28E-15D
Output: ±15V
Current: 8A Total
Mechanical Diagrams
0.250 [6.35]
+VIN
ENA 2
SHARE
TRIM
1
12
SEE NOTE 7
IN RTN
2
11
1.50 [38.1]
0.200 [5.08]
TYP. NON-CUM.
MQFL-28E-15D-X-ES
DC-DC ConvErtEr
CASE
3
10 1.260
ENA 1
28viꢀ ±15vꢁuꢂ @ 8A
4
-VOUT
[32.00]
9
8
7
MADE IN USA
SYNC OUT
OUT RTN
+VOUT
5
0.040 [1.02]
S/N 0000000 D/C 3205-301 CAGE 1WX10
SYNC IN
6
PIN
2.50 [63.50]
2.760 [70.10]
3.00 [76.2]
0.050 [1.27]
0.128 [3.25]
0.22 [5.6]
2.96 [75.2]
0.228 [5.79]
0.390 [9.91]
Case X
0.250 [6.35]
+VIN
ENA 2
1
2
3
4
12
11
SEE NOTE 7
0.200 [5.08]
TYP.
IN RTN
CASE
SHARE
TRIM
1.50 [38.1]
MQFL-28E-15D-U-ES
DC-DC ConvErtEr
28viꢀ ±15vꢁuꢂ @ 8A
10 1.260
NON-CUM.
ENA 1
-VOUT
[32.00]
9
8
7
SYNC OUT
SYNC IN
OUT RTN
+VOUT
5
MADE IN USA
0.040
[1.02]
PIN
S/N 0000000 D/C 3211-301 CAGE 1WX10
6
0.42
[10.7]
2.50 [63.5]
2.760 [70.10]
3.00 [76.2]
0.050 [1.27]
0.128 [3.25]
0.22 [5.6]
2.80 [71.1]
0.390 [9.91]
Case U
PIN DESIGNATIONS
Pin # Function Pin # Function
NOTES
1)
Pins 0.040’’ (1.02mm) diameter
2)
Pin Material: Copper Alloy
Finish: Gold over Nickel plating, followed by Sn/Pb solder dip
All dimensions in inches (mm) Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm)
x.xxx +/-0.010 in. (x.xx +/-0.25mm)
Weight: 2.8 oz (78.5 g) typical
Workmanship: Meets or exceeds IPC-A-610 Class III
Print Labeling on Top Surface per Product Label Format Drawing
Pin 1 identification hole, not intended for mounting (case X and U)
Baseplate flatness tolerance is 0.004” (.10mm) TIR for surface.
1
2
3
4
5
6
Positive input
Input return
Case
Enable 1
Sync output
Sync input
7
8
9
Positive output
Output return
Negative Output
3)
4)
5)
6)
7)
8)
10 Trim
11 Share
12 Enable 2
Product# MQFL-28E-15D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005290 Rev. C
08/20/13
Page 16
MQFL-28E-15D
Output: ±15V
Current: 8A Total
Mechanical Diagrams
0.300 [7.62]
1.150 [29.21]
0.140 [3.56]
0.250 [6.35]
TYP
0.250 [6.35]
+VIN
ENA 2
SHARE
1
12
11
10
9
0.200 [5.08]
TYP. NON-CUM.
2.000
[50.80]
IN RTN
2
3
4
5
6
CASE
TRIM
MQFL-28E-15D-Y-ES
DC-DC ConvErtEr
28viꢀ ±15vꢁuꢂ @ 8A
1.50
[38.1]
ENA 1
-VOUT
SYNC OUT
SYNC IN
MADE IN USA OUT RTN
8
1.750
[44.45]
S/N 0000000 D/C 3211-301 CAGE 1WX10
+VOUT
7
0.040 [1.02]
PIN
0.050 [1.27]
1.750 [44.45]
2.50 [63.5]
0.375 [9.52]
0.22 [5.6]
2.96 [75.2]
0.228 [5.79]
0.390 [9.91]
Case Y
Case Z
(variant of Y)
Case W
(variant of Y)
0.250 [6.35]
0.250 [6.35]
0.200 [5.08]
TYP. NON-CUM.
0.200 [5.08]
TYP. NON-CUM.
0.040 [1.02]
PIN
0.040 [1.02]
PIN
0.22 [5.6]
0.050 [1.27]
0.42 [10.7]
0.050 [1.27]
0.22 [5.6]
0.36 [9.14]
2.80 [71.1]
0.525 [13.33]
0.390
[9.91]
0.525 [13.33]
0.390
[9.91]
2.80 [71.1]
PIN DESIGNATIONS
Pin # Function Pin # Function
NOTES
1)
Pins 0.040’’ (1.02mm) diameter
2)
Pin Material: Copper Alloy
Finish: Gold over Nickel plating, followed by Sn/Pb solder dip
All dimensions in inches (mm) Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm)
x.xxx +/-0.010 in. (x.xx +/-0.25mm)
Weight: 2.8 oz (78.5 g) typical
Workmanship: Meets or exceeds IPC-A-610 Class III
Print Labeling on Top Surface per Product Label Format Drawing
Pin 1 identification hole, not intended for mounting (case X and U)
Baseplate flatness tolerance is 0.004” (.10mm) TIR for surface.
1
2
3
4
5
6
Positive input
Input return
Case
Enable 1
Sync output
Sync input
7
8
9
Positive output
Output return
Negative Output
3)
4)
5)
6)
7)
8)
10 Trim
11 Share
12 Enable 2
Product# MQFL-28E-15D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005290 Rev. C
08/20/13
Page 17
MQFL-28E-15D
Output: ±15V
Current: 8A Total
Mechanical Diagrams
0.250 [6.35]
+VIN
ENA 2
SHARE
TRIM
1
12
SEE NOTE 7
IN RTN
2
11
1.50 [38.1]
0.200 [5.08]
TYP. NON-CUM.
MQFL-28E-15D-X-ES
DC-DC ConvErtEr
CASE
3
10 1.260
ENA 1
28viꢀ ±15vꢁuꢂ @ 8A
4
-VOUT
[32.00]
9
8
7
MADE IN USA
SYNC OUT
OUT RTN
+VOUT
5
0.040 [1.02]
S/N 0000000 D/C 3205-301 CAGE 1WX10
SYNC IN
6
PIN
2.50 [63.50]
2.760 [70.10]
3.00 [76.2]
0.050 [1.27]
0.128 [3.25]
0.22 [5.6]
2.96 [75.2]
0.228 [5.79]
0.390 [9.91]
Case X
0.250 [6.35]
+VIN
ENA 2
1
2
3
4
12
11
SEE NOTE 7
0.200 [5.08]
TYP.
IN RTN
CASE
SHARE
TRIM
1.50 [38.1]
MQFL-28E-15D-U-ES
DC-DC ConvErtEr
28viꢀ ±15vꢁuꢂ @ 8A
10 1.260
NON-CUM.
ENA 1
-VOUT
[32.00]
9
8
7
SYNC OUT
SYNC IN
OUT RTN
+VOUT
5
MADE IN USA
0.040
[1.02]
PIN
S/N 0000000 D/C 3211-301 CAGE 1WX10
6
0.42
[10.7]
2.50 [63.5]
2.760 [70.10]
3.00 [76.2]
0.050 [1.27]
0.128 [3.25]
0.22 [5.6]
2.80 [71.1]
0.390 [9.91]
Case U
PIN DESIGNATIONS
Pin # Function Pin # Function
NOTES
1)
Pins 0.040’’ (1.02mm) diameter
2)
Pin Material: Copper Alloy
Finish: Gold over Nickel plating, followed by Sn/Pb solder dip
All dimensions in inches (mm) Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm)
x.xxx +/-0.010 in. (x.xx +/-0.25mm)
Weight: 2.8 oz (78.5 g) typical
Workmanship: Meets or exceeds IPC-A-610 Class III
Print Labeling on Top Surface per Product Label Format Drawing
Pin 1 identification hole, not intended for mounting (case X and U)
Baseplate flatness tolerance is 0.004” (.10mm) TIR for surface.
1
2
3
4
5
6
Positive input
Input return
Case
Enable 1
Sync output
Sync input
7
8
9
Positive output
Output return
Negative Output
3)
4)
5)
6)
7)
8)
10 Trim
11 Share
12 Enable 2
Product# MQFL-28E-15D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005290 Rev. C
08/20/13
Page 18
MQFL-28E-15D
Output: ±15V
Current: 8A Total
Ordering Information
MilQor Converter FAMILY MATRIX
The tables below show the array of MilQor 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 requirements.
Single Output
Dual Output †
1.5V
1.8V
2.5V
3.3V
5V
6V
7.5V
9V
12V
15V
28V
5V
12V
15V
Full Size
MQFL-28
(1R5S) (1R8S) (2R5S) (3R3S)
(05S)
(06S)
(7R5S)
(09S)
(12S)
(15S)
(28S)
(05D)
(12D)
(15D)
16-40Vin Cont.
24A
Total
10A
Total
8A
Total
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
16A
13A
13A
11A
11A
13A
10A
10A
8A
8A
8A
4A
4A
16-50Vin 1s Trans.*
Absolute Max Vin = 60V
MQFL-28E
16-70Vin Cont.
24A
Total
10A
Total
8A
Total
16-80Vin 1s Trans.*
Absolute Max Vin =100V
MQFL-28V
16-40Vin Cont.
6.5A
6.5A
8A
3.3A
3.3A
4A
5.5-50Vin 1s Trans.*
Absolute Max Vin = 60V
MQFL-28VE
16-70Vin Cont.
8A
5.5-80Vin 1s Trans.*
Absolute Max Vin = 100V
MQFL-270
155-400Vin Cont.
24A
Total
10A
Total
8A
Total
10A
155-475Vin 1s Trans.*
Absolute Max Vin = 550V
MQFL-270L
15A
Total
6A
Total
5A
Total
65-350Vin Cont.
40A
40A
30A
22A
15A
12A
10A
8A
6A
5A
2.7A
65-475Vin 1s Trans.*
Absolute Max Vin = 550V
Single Output
Dual Output †
1.5V
1.8V
2.5V
3.3V
5V
6V
7.5V
9V
12V
15V
28V
5V
12V
15V
Half Size
(1R5S) (1R8S) (2R5S) (3R3S)
(05S)
(06S)
(7R5S)
(09S)
(12S)
(15S)
(28S)
(05D)
(12D)
(15D)
MQHL-28
16-40Vin Cont.
10A
Total
4A
Total
3.3A
Total
20A
20A
10A
20A
20A
10A
20A
20A
10A
15A
15A
7.5A
10A
10A
5A
8A
8A
4A
6.6A
6.6A
3.3A
5.5A
5.5A
4A
4A
2A
3.3A
3.3A
1.8A
1.8A
0.9A
16-50Vin 1s Trans.*
Absolute Max Vin = 60V
MQHL-28E
16-70Vin Cont.
10A
Total
4A
Total
3.3A
Total
16-80Vin 1s Trans.*
Absolute Max Vin =100V
MQHR-28
16-40Vin Cont.
5A
Total
2A
Total
1.65A
Total
2.75A
1.65A
16-50Vin 1s Trans.*
Absolute Max Vin = 60V
MQHR-28E
16-70Vin Cont.
5A
Total
2A
Total
1.65A
Total
10A
10A
10A
7.5A
5A
4A
3.3A
2.75A
2A
1.65A
0.9A
16-80Vin 1s Trans.*
Absolute Max Vin = 100V
Check with factory for availability.
†80% of total output current available on any one output.
*Converters may be operated at the highest transient input voltage, but some component electrical and thermal stresses would be beyond MIL-
HDBK-1547A guidelines.
Product# MQFL-28E-15D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005290 Rev. C
08/20/13
Page 19
MQFL-28E-15D
Output: ±15V
Current: 8A Total
Ordering Information
PART NUMBERING SYSTEM
The part numbering system for SynQor’s MilQor DC-DC converters follows the format shown in the table below.
Not all combinations make valid part numbers, please contact SynQor for availability. See the Product Summary web page for more options.
Example: MQFL-28E-15D-Y-ES
Output Voltage(s)
Input
Voltage
Range
Model
Name
Package Outline/
Pin Configuration
Screening
Grade
Single
Dual
Output
Output
1R5S
1R8S
2R5S
3R3S
05S
06S
7R5S
09S
28
28E
28V
28VE
U
X
Y
W
Z
MQFL
MQHL
MQHR
05D
12D
15D
C
ES
HB
270
270L
12S
15S
28S
APPLICATION NOTES
A variety of application notes and technical white papers can be downloaded in pdf format from the SynQor website.
PATENTS
SynQor holds the following U.S. patents, one or more of which apply to each product listed in this document. Additional patent applications may be
pending or filed in the future.
5,999,417
6,894,468
7,119,524
7,765,687
6,222,742
6,896,526
7,269,034
7,787,261
6,545,890
6,927,987
7,272,021
8,023,290
6,577,109
7,050,309
7,272,023
8,149,597
6,594,159
7,072,190
7,558,083
6,731,520
7,085,146
7,564,702
Contact SynQor for further information and to order:
Warranty
SynQor offers a two (2) year limited warranty. Complete warranty informa-
tion is listed on our website or is available upon request from SynQor.
Phone:
Toll Free: 1-888-567-9596
978-849-0600
Fax:
E-mail:
Web:
978-849-0602
mqnbofae@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.
Address: 155 Swanson Road
Boxborough, MA 01719
USA
Product# MQFL-28E-15D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005290 Rev. C
08/20/13
Page 20
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