10A/120W

MQFL-270-12D
Dual Output
H igH R eliability DC-DC C onveRteR
155-400V
155-475V
±12V
10A
87% @ 5A /89% @ 10A
Continuous Input
Transient Input
Output
Output
Efficiency
F ull P oweR o PeRation : -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.
SynQor’s innovative QorSeal® packaging approach ensures
survivability in the most hostile environments. Compatible
2
ENA
with the industry standard format, these converters operate
RE
SHA
at a fixed frequency, have no opto-isolators, and follow
conservative component derating guidelines.
2
70-1
+VIN
They are
tEr
VEr
A
M DC Con [email protected] 1WX10
E
DC- in ±12V
CAG
1
0
V
5-3
320
270
D/C
-2
QFL
N
IN RT
E
CAS
designed and manufactured to comply with a wide range of
1
ENA
T
C OU
SYN
C IN
SYN
military standards.
-ES
D-Y
TRIM
T
-VOU
RTN
OUT
T
+VOU
0
000
000
S/n
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 certified facility
• Full component traceability
• Temperature cycling
• Constant acceleration
• 24, 96, 160 hour burn-in
• Three level temperature screening
Product# MQFL-270-12D
Phone 1-888-567-9596
DesigneD & ManufactureD in the usa
featuring Qorseal® hi-rel asseMbly
Features
•
•
•
•
•
•
•
•
Fixed switching frequency
No opto-isolators
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
Specification Compliance
MQFL series converters (with MQME filter) are designed to meet:
• MIL-HDBK-704-7 (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.# 005-0005043 Rev. I
12/30/15
Page 1
MQFL-270-12D
Output: ±12V
Current: 10A Total
Technical Specification
BLOCK DIAGRAM
ISOLATION STAGE
REGULATION STAGE
CURRENT
SENSE
1
+Vin
7
POSITIVE
OUTPUT
T1
T1
INPUT
RETURN
T2
3
CASE
GATE DRIVERS
CURRENT
LIMIT
4
NEGATIVE
OUTPUT
GATE DRIVERS
PRIMARY
CONTROL
5
8
OUTPUT
RETURN
9
UVLO
OVSD
ENABLE 1
T2
ISOLATION BARRIER
2
MAGNETIC
12
ENABLE 2
SYNC OUT
11
DATA COUPLING
6
SECONDARY
CONTROL
SYNC IN
SHARE
10
BIAS POWER
TRIM
CONTROL
POWER
TRANSFORMER
POSITIVE
OUTPUT
TYPICAL CONNECTION DIAGRAM
270 Vdc
+
__
open
means
on
1
+VIN
2
IN RTN
3
CASE
4
ENA 1
5
SYNC OUT
6
SYNC IN
ENA 2 12
SHARE 11
MQFL
TRIM 10
-VOUT 9
open
means
on
+
Load
OUT RTN 8
+VOUT 7
__
+
Load
__
Product# MQFL-270-12D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005043 Rev. I
12/30/15
Page 2
MQFL-270-12D
Output: ±12V
Current: 10A Total
Technical Specification
MQFL-270-12D ELECTRICAL CHARACTERISTICS
Parameter
Min.
Typ.
Max. Units Notes & Conditions
Vin=270V dc ±5%, +Iout = -Iout = 5A, CL=0µF, free
running (see Note 10) unless otherwise specified
Specifications subject to change without notice
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
Input Filter Component Values (L\C)
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)
Positive Output
Negative Output
Output Voltage Set Point Over Temperature
Positive Output
Negative Output
Positive Output Voltage Line Regulation
Positive Output Voltage Load Regulation
Total Positive Output Voltage Range
Vout Cross Regulation (Negative)
Vout Ripple and Noise Peak to Peak
Total Operating Current Range
Single Output Operating 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
Product# MQFL-270-12D
-500
-800
-55
-65
-1.2
600
550
-0.8
-1.2
V
V
V
V
500
800
125
135
300
50
V
V
°C
°C
°C
V
155
155
270
270
400
475
V
V
142
133
5
150
140
11
155
145
17
V
V
V
490
450
20
520
475
50
56\0.11
550
500
80
28
1
6
140
1
37
4
11
180
V
V
11.82 12.00 12.18
-12.18 -12.00 -11.82
-20
0
20
50
65
80
11.76 12.00 12.24
200
450
700
20
200
0
10
0
8
0
120
10.5
11.5
12.5
10.5
13
15.5
3.5
10
75
3,000
V
V
mV
mV
V
mV
mV
A
A
W
A
A
A
mA
µF
-900
-2000
-2200
-600
600
300
900
500
mV
mV
µs
450
2000
2200
600
mV
mV
µs
6
0
75
5
2
10
2
120
10
4
ms
%
ms
ms
ms
50
Phone 1-888-567-9596
(see Note 14)
See Note 1
HB Grade Products, See Notes 2 & 17
Continuous
Transient, 1s
See Note 3
1, 2, 3
1, 2, 3
1, 2, 3
See Note 3
V
V
V
μH\μF Internal Values
A
Vin = 155V; +Iout = –Iout = 5A
mA
mA
mA
mA
Bandwidth = 100kHz – 10MHz; see Figure 20
11.88 12.00 12.12
-12.12 -12.00 -11.88
Group A
Subgroup
See Note 5
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
See Note 12
1
1
See Note 12
See Note 12
+Vout@(+Iout=-Iout=0A) - +Vout@(+Iout=-Iout=5A); See Note 12
See Note 12
-Vout@(+Iout=-Iout=2A) - -Vout@(+Iout=8A, -Iout=2A); See Notes 11,12
Bandwidth = 10MHz; CL=11µF on both outputs
(+Iout) + (–Iout)
Maximum +Iout or –Iout
Total on both outputs
+Iout + –Iout; +Iout = –Iout; See Note 4
Vout ≤ 1.2 V; see Note 15
Total on both outputs
See Note 6
Total Iout step = 5A‹-›10A, 1A‹-›5A; CL=11µF on both outputs
“
See Note 7
Vin step = 155V‹-›400V; CL=11 µF; see Note 8
“
“
+Iout = 5A, -Iout = 0A; See Note 7
Vout = 1.2V-›10.8V
Doc.# 005-0005043 Rev. I
4, 5, 6
4, 5, 6
4, 5, 6
See Note 5
4, 5, 6
4, 5, 6
4, 5, 6
ENA1, ENA2 = 5 V; see Notes 9 & 11
ENA2 = 5 V; see Note 11
ENA1 = 5 V; see Note 11
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2, 3
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
1, 2, 3
1, 2, 3
See Note 5
12/30/15
Page 3
MQFL-270-12D
Output: ±12V
Current: 10A Total
Technical Specification
MQFL-270-12D ELECTRICAL CHARACTERISTICS (Continued)
Parameter
Min.
Typ.
Specifications subject to change without notice
Max.
Units Notes & Conditions
Vin=270V dc ±5%, +Iout = -Iout = 5A, CL=0µF, free
running (see Note 10) unless otherwise specified
Group A
Subgroup
(see Note 14)
EFFICIENCY
Iout = 10A (155Vin)
85
90
%
Iout = 5A (155Vin)
86
90
%
Iout = 10A (270Vin)
84
89
%
1, 2, 3
Iout = 5A (270Vin)
83
87
%
Iout = 10A (400Vin)
81
86
%
Iout = 5A (400Vin)
77
83
%
Load Fault Power Dissipation
22
36
W
Iout at current limit inception point; See Note 4
1
Short Circuit Power Dissipation
24
43
W
+Vout ≤ +1.2V; -Vout ≥ -1.2V
See Note 5
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 (input rtn to output rtn)
100
MΩ
1
Isolation Resistance (any pin to case)
100
MΩ
1
Isolation Capacitance (input rtn to output rtn)
44
nF
1
FEATURE CHARACTERISTICS
Switching Frequency (free running)
500
550
600
kHz
1, 2, 3
Synchronization Input
Frequency Range
500
700
kHz
1, 2, 3
Logic Level High
2.0
5.5
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
80
%
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
Output Voltage Trim Range
-1.5
0.5
V
(+Vout) - 12V; See Figure E
See Note 5
RELIABILITY CHARACTERISTICS
Calculated MTBF (MIL-STD-217F2)
GB @ Tcase = 70ºC
2600
103 Hrs.
AIF @ Tcase = 70ºC
290
103 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 ≥ 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 ≥ 250 µs.
9. Input voltage rise time ≥ 250 µs.
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. After a disable or fault event, module is inhibited from restarting for 300 ms. See Shut Down section.
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 ESS 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 and a maximum junction
temperature rise of 20ºC above TCASE.
16. Converter delivers current into a persisting short circuit for up to 1 second. See Current Limit in the Application Notes section.
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-270-12D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005043 Rev. I
12/30/15
Page 4
MQFL-270-12D
Output: ±12V
Current: 10A Total
Technical Figures
100
22
20
95
18
Power Dissipation (W)
Efficiency (%)
90
85
80
75
70
155 Vin
270 Vin
65
16
14
12
10
8
6
400 Vin
20
40
60
80
100
120
Figure 1: Efficiency vs. output power, from zero load to full load with
equal load on the +12V output and 50% load on the -12V output at
minimum, nominal, and maximum input voltage at 25°C.
0
20
40
60
80
100
Total Output Power (W)
120
Figure 2: Power dissipation vs. output power, from zero load to full load
with equal load on the +12V output and 50% load on the -12V output at
minimum, nominal, and maximum input voltage at 25°C.
22
100
20
95
18
Power Dissipation (W)
90
Efficiency (%)
400 Vin
0
Total Output Power (W)
85
80
75
70
155 Vin
65
16
14
12
10
8
6
155 Vin
270 Vin
4
270 Vin
400 Vin
2
400 Vin
0
60
8/0
7/1
6/2
5/3
4/4
3/5
Load Current (A), +Iout / -Iout
2/6
1/7
8/0
0/8
Figure 3: Efficiency vs. output current, with total output current fixed at
80% load (96W) and loads split as shown between the +12V and -12V
outputs at minimum, nominal, and maximum input voltage at 25°C.
16
95
14
90
12
80
75
70
155 Vin
4/4
3/5
25ºC
85ºC
125ºC
1/7
0/8
8
6
4
155 Vin
270 Vin
400 Vin
0
-55ºC
25ºC
85ºC
125ºC
Case Temperature (ºC)
Case Temperature (ºC)
Figure 5: Efficiency at 60% load (3A load on +12V and 3A load on -12V)
versus case temperature for Vin = 155V, 270V, and 400V.
Phone 1-888-567-9596
2/6
10
2
400 Vin
60
Product# MQFL-270-12D
5/3
270 Vin
65
-55ºC
6/2
Figure 4: Power dissipation vs. output current, with total output current
fixed at 80% load (96W) and loads split as shown between the +12V and
-12V outputs at minimum, nominal, and max input voltage at 25°C.
100
85
7/1
Load Current (A), +Iout / -Iout
Power Dissipation (W)
Efficiency (%)
270 Vin
2
60
0
155 Vin
4
Figure 6: Power dissipation at 60% load (3A load on +12V and 3A load
on -12V) versus case temperature for Vin =155V, 270V, and 400V.
www.SynQor.com
Doc.# 005-0005043 Rev. I
12/30/15
Page 5
MQFL-270-12D
Output: ±12V
Current: 10A Total
12.8
-12.8
12.6
-12.6
12.6
-12.6
12.4
-12.4
12.4
-12.4
12.2
-12.2
12.2
-12.2
12.0
-12.0
12.0
-12.0
11.8
-11.8
11.8
-11.8
-11.6
11.6
+Vout
11.4
-Vout
11.2
8/2
6/4
5/5
+IOUT (A) / -IOUT (A)
4/6
+Vout
-11.4
11.4
-11.2
11.2
8/0
2/8
Figure 7: Load regulation vs. load current with power fixed at full load
(120W) and load currents split as shown between the +12V and -12V
outputs, at nominal input voltage and TCASE = 25ºC.
-11.2
6/2
4/4
+IOUT (A) / -IOUT (A)
2/6
0/8
12.5
-12.5
12.5
-12.5
12.4
-12.4
12.4
-12.4
12.3
-12.3
12.3
-12.3
12.2
-12.2
12.2
-12.2
12.1
-12.1
12.1
-12.1
12.0
-12.0
12.0
-12.0
11.9
-11.9
11.9
-11.9
11.8
-11.8
11.7
+Vout
-11.7
11.6
-Vout
11.5
0
24
48
72
96
11.8
-11.8
+Vout
11.7
-11.6
11.6
-11.5
120
11.5
0
24
12
144
12
10
120
10
8
96
6
72
48
Tjmax = 105º C
Tjmax = 125º C
Tjmax = 145º C
0
45
65
85
105
125
Output Voltage (V)
14
Pout (W)
168
25
96
-11.5
120
6
4
2
0
0
145
Figure 11: Output Current / Output Power derating curve as a function of
TCASE and the maximum desired power MOSFET junction temperature
(see Note 15).
Phone 1-888-567-9596
8
24
270 Vin
0
Case Temperature (ºC)
Product# MQFL-270-12D
72
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.
14
2
48
-11.6
Total Output 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.
4
-11.7
-Vout
Total Output Power (W)
Iout (A)
-11.4
-Vout
Figure 8: Load regulation vs. load current with power fixed at 80% load
(96W) and load currents split as shown between the +12V and -12V
outputs, at nominal input voltage and TCASE = 25ºC.
Positive Output (V)
Positive Output (V)
-11.6
11.6
Negative Output (V)
-12.8
Positive Output (V)
12.8
Negative Output (V)
Positive Output (V)
Technical Figures
2
4
6
8
Load Current (A)
10
12
14
Figure 12: Positive output voltage vs. total load current evenly split
showing typical current limit curves. See Current Limit section in the
Application Notes section.
www.SynQor.com
Doc.# 005-0005043 Rev. I
12/30/15
Page 6
MQFL-270-12D
Output: ±12V
Current: 10A Total
Technical Figures
Figure 13: Turn-on transient at full rated load current (resistive load)
(5 ms/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 (5 ms/div). Input
voltage pre-applied. Ch 1: +Vout (5V/div); Ch 2: -Vout (5V/div); Ch 3:
Enable1 input (5V/div).
Figure 15: Turn-on transient at full rated load current (resistive load)
(5 ms/div). Input voltage pre-applied. Ch 1: +Vout (5V/div); Ch 2: -Vout
(5V/div); Ch 3: Enable2 input (5V/div).
Figure 16: Turn-on transient at full load, after application of input
voltage (ENA 1 and ENA 2 logic high) (5 ms/div). Ch 1: +Vout (5V/div);
Ch 2: -Vout (5V/div); Ch 3: Vin (100V/div).
Figure 17: Output voltage response to step-change in total load current
(50%-100%-50%) of total Iout (max) split 50%/50%. Load cap: 1μF ceramic cap
and 10μF, 100mW ESR tantalum cap. Ch 1: +Vout (1 V/div); Ch 2: +Iout (5A/div);
Ch 3: -Vout (1 V/div); Ch 4: -Iout (5A/div).
Figure 18: Output voltage response to step-change in total load current (10%50%-10%) of total Iout (max) split 50%/50%. Load cap: 1μF ceramic cap and
10μF, 100 mW ESR tantalum cap. Ch 1: +Vout (1 V/div); Ch 2: +Iout (5A/div); Ch
4: -Vout (1 V/div); Ch 4: -Iout (5A/div).
Product# MQFL-270-12D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005043 Rev. I
12/30/15
Page 7
MQFL-270-12D
Output: ±12V
Current: 10A Total
Technical Figures
Figure 19: Output voltage response to step-change in input voltage (155V - 400V
- 155V). Load cap: 10μF, 100 mW ESR tantalum cap and 1μF ceramic cap. Ch 1:
+Vout (1V/div); Ch 2: -Vout (1V/div); Ch 3: Vin (100V/div).
Figure 20: Test set-up diagram showing measurement points for Input
Terminal Ripple Current (Fig 21) and Output Voltage Ripple (Fige 22).
Figure 21: Input terminal current ripple, ic, at full rated output current
and nominal input voltage with SynQor MQ filter module (100 mA/div).
Bandwidth: 20MHz. See Fig 20.
Figure 22: Output voltage ripple, +Vout (Ch 1) and -Vout (Ch 2), at
nominal input voltage and full load current evenly split (20 mV/div). Load
capacitance: 1μF ceramic cap and 10μF tantalum cap. Bandwidth: 10
MHz. See Fig 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-270-12D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005043 Rev. I
12/30/15
Page 8
MQFL-270-12D
Output: ±12V
Current: 10A Total
Technical Figures
1
0.1
0.01
155 Vin
270 Vin
400 Vin
0.001
Output Impedance (ohms)
Output Impedance (ohms)
1
0.0001
100
1,000
Hz
10,000
10
0
-10
-20
-20
Forward Transmission (dB)
0
-30
-40
-50
-60
-70
155 Vin
270 Vin
400 Vin
-80
-90
100
1,000
Hz
10,000
10,000
-30
-40
-50
-60
-70
155 Vin
270 Vin
400 Vin
-80
10
-5
-10
-15
-15
Reverse Transmission (dB)
-5
-25
-30
-35
-40
155 Vin
270 Vin
400 Vin
100
1,000
Hz
10,000
100,000
Figure 28: Magnitude of incremental forward transmission (-FT =
-vout /vin) for minimum, nominal, and maximum input voltage at
full rated power.
-10
-20
100,000
-100
100,000
Figure 27: Magnitude of incremental forward transmission (+FT
= +vout /vin) for minimum, nominal, and maximum input voltage
at full rated power.
-50
1,000
Hz
-90
-100
10
100
Figure 26: Magnitude of incremental output impedance (-Zout =
-vout /-iout) for minimum, nominal, and maximum input voltage at
full rated power.
-10
-45
155 Vin
270 Vin
400 Vin
0.001
100,000
Figure 25: Magnitude of incremental output impedance (+Zout =
+vout /+iout) for minimum, nominal, and maximum input voltage
at full rated power.
Forward Transmission (dB)
0.01
0.0001
10
Reverse Transmission (dB)
0.1
-20
-25
-30
-35
-40
155 Vin
270 Vin
400 Vin
-45
-50
-55
-55
10
100
1,000
10,000
100,000
10
100
1,000
10,000
100,000
Hz
Hz
Figure 29: Magnitude of incremental reverse transmission (+RT = Figure 30: Magnitude of incremental reverse transmission (-RT =
iin /+iout) for minimum, nominal, and maximum input voltage at
iin /-iout) for minimum, nominal, and maximum input voltage at
full rated power.
full rated power.
Product# MQFL-270-12D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005043 Rev. I
12/30/15
Page 9
MQFL-270-12D
Output: ±12V
Current: 10A Total
Technical Figures
Input Impedance (ohms)
10000
1000
100
155 Vin
270 Vin
400 Vin
10
1
10
100
1,000
10,000
100,000
Hz
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-270-05S, 5Vout module at 120W output, as measured
with Method CE102. Limit line shown is the ‘Basic Curve’ for all
applications with a 270V source.
Figure 33: High frequency conducted emissions of MQFL-27005S, 5Vout module at 120W output with MQME-270-P filter, as
measured with Method CE102. Limit line shown is the ‘Basic
Curve’ for all applications with a 270V source.
Product# MQFL-270-12D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005043 Rev. I
12/30/15
Page 10
MQFL-270-12D
Output: ±12V
Current: 10A Total
Application Section
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 transformers to provide the functions of input/
output isolation and voltage transformation to achieve the
output voltage required.
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.
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.
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.
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 “backdrive current limit” to keep this negative output terminal
current small.
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. A separate
bias supply provides power to both the input and output
control circuits.
Product# MQFL-270-12D
Phone 1-888-567-9596
An input under-voltage lockout feature with hysteresis is
provided, as well as an input over-voltage shutdown. There
is also an output current limit that is nearly constant as the
load impedance decreases to a short circuit (i.e., there is no
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.
The MQFL converter’s control circuit does not implement an
output over-voltage limit or an over-temperature shutdown.
The following sections describe the use and operation of
additional 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.
The ENA1 pin (pin 4) is referenced with respect to the
converter’s input return (pin 2). The ENA2 pin (pin 12) is
referenced with respect to the converter’s output return (pin
8). This permits 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.
Both enable pins are internally pulled high so that an open
connection on both pins will enable the converter. Figure A
shows the equivalent circuit looking into either enable pins.
It is TTL compatible.
5.0V
PIN 4
(OR PIN 12)
1N4148
68K
ENABLE
TO ENABLE
CIRCUITRY
250K
2N3904
125K
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.
www.SynQor.com
Doc.# 005-0005043 Rev. I
12/30/15
Page 11
MQFL-270-12D
Output: ±12V
Current: 10A Total
Application Section
SYNCHRONIZATION: The MQFL converter’s switching
frequency 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.
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.
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
frequency if there is no synchronization signal at the SYNC
IN pin, or the synchronization frequency if there is.
The SYNC OUT signal is available only when the dc input
voltage is above approximately 125V 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.
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 relative to that of the second converter.
Figure B shows the equivalent circuit looking into the SYNC
IN pin. Figure C shows the equivalent circuit looking into
the SYNC OUT pin.
CURRENT SHARE: Like the single output MQFL converters, the dual output converters have a SHARE pin (pin 11).
In this case, however, the voltage at this pin represents the
sum of the positive and negative output currents. As such,
the share pin cannot cause two or more paralleled converters
to share load currents on the positive or negative outputs
independently. Nevertheless, there may be applications
where the two currents have a fixed ratio, in which case it
can make sense to force the sharing of total current among
several converters.
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.
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 total current, with a linear relationship in between. The internal source resistance
of a converter’s SHARE pin signal is 2.5 kΩ.
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. During a current limit auto-restart event, the SHARE pin
outputs a startup synchronization pulse. The SHARE pin will go
to 5V for approximately 2ms before the converter restarts.
NOTE: Converters operating from separate input filters with
reverse polarity protection (such as the MQME-270-R filter)
with their outputs connected in parallel may exhibit autorestart operation at light loads. Consult factory for details.
OUTPUT VOLTAGE TRIM: If desired, it is possible to increase
or decrease the MQFL dual converter’s output voltage from its
5V
5V
5K
5K
PIN 6
PIN 2
SYNC IN
5K
TO SYNC
CIRCUITRY
IN RTN
OPEN COLLECTOR
OUTPUT
IN RTN
Figure B: Equivalent circuit looking into the SYNC IN pin with
respect to the IN RTN (input return) pin.
Product# MQFL-270-12D
SYNC OUT
FROM SYNC
CIRCUITRY
Phone 1-888-567-9596
PIN 5
PIN 2
Figure C: Equivalent circuit looking into SYNC OUT pin with
respect to the IN RTN (input return) pin.
www.SynQor.com
Doc.# 005-0005043 Rev. I
12/30/15
Page 12
MQFL-270-12D
Output: ±12V
Current: 10A Total
Application Section
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
equation:
Vnom – 2.5
Vout – Vnom
– 2 x Vnom + 5
1,000.0
Trim Resistance (kOhms)
(
Rup = 10 x
10,000.0
)
where:
Vnom = the converter’s nominal output voltage,
Vout = the desired output voltage (greater than Vnom), and
Rup is in kiloOhms (kΩ).
The maximum value of output voltage that can be achieved is
0.5V above the nominal output.
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:
Rdown = 10 x
[
][
Vnom – 1
2.5
x
Vout – 2.5
Vnom – Vout
]
– 5
where:
Vnom = the converter’s nominal output voltage,
Vout = the desired output voltage (less than Vnom), and
Rdown is in kiloOhms (kΩ).
100.0
Trim Down Configuration
10.0
Trim Up Configuration
1.0
-2
-1.5
-1
-0.5
0
0.5
1
Change in Vout (V)
Figure E: Change in Output Voltage Graph.
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 converter will not respond to a state of the input voltage unless it
has remained 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 enviroment.
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.
1
2
3
270 Vdc
4
+
–
5
open
means
on
6
+VIN
ENA 2
IN RTN
CASE
ENA 1
SHARE
MQFL
SYNC OUT
TRIM
– VOUT
OUT RTN
SYNC IN
+VOUT
12
open
means
on
11
10
9
Rup
8
Rdown
7
+
Load
–
+
Load
–
Figure D: Typical connection for output voltage trimming.
Product# MQFL-270-12D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005043 Rev. I
12/30/15
Page 13
MQFL-270-12D
Output: ±12V
Current: 10A Total
Application Section
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.
SHUT DOWN: The MQFL converter will shut down in response
to following conditions:
- ENA1 input low
- ENA2 input low
- VIN input below under-voltage lockout threshold
- VIN input above over-voltage shutdown threshold
- Persistent current limit event lasting more than 1 second
Following a shutdown from a disable event or an input voltage fault, 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.
Refer to the following Current Limit section for details regarding
persistent current limit behavior.
CURRENT LIMIT: The converter will reduce its output voltage in response to an overload condition, as shown in Figure
12. If the output voltage drops to below approximately 50% of
the nominal setpoint for longer than 1 second, the auto-restart
feature will engage. The auto-restart feature will stop the
converter from delivering load current, in order to protect the
converter and the load from thermal damage. After four seconds have elapsed, the converter will automatically restart.
In a system with multiple converters configured for load sharing using the SHARE pin, if the auto-restart feature engages,
the converters will synchronize their restart using signals communicated on the SHARE pin.
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
paralleled 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.
Product# MQFL-270-12D
Phone 1-888-567-9596
To avoid any problems that might arise due to back-drive
current, the MQFL converters limit the negative current
that the converter can draw from its output terminals.
The threshold for this back-drive current limit is placed
sufficiently below zero so that the 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
negative 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, which at full power is no more than 20ºC higher
than the case temperature directly below this 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.
When the converter is mounted on a metal plate, the plate
will help to make the converter’s case bottom a uniform temperature. How well it does so depends on the thickness of the
plate and on the thermal conductance of the interface layer
(e.g. thermal 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.
www.SynQor.com
Doc.# 005-0005043 Rev. I
12/30/15
Page 14
MQFL-270-12D
Output: ±12V
Current: 10A Total
Stress Screening
CONSTRUCTION AND ENVIRONMENTAL STRESS SCREENING OPTIONS
Consistent with
MIL-STD-883F
Screening
C-Grade
ES-Grade
from
( specified
0 °C to +70 °C )
Element Evaluation
HB-Grade
from
from
( -45specified
( -55specified
°C to +100 °C )
°C to +125 °C )
No
Yes
Yes
Yes
Yes
Internal Visual
*
Yes
Temperature Cycle
Method 1010
No
Constant Acceleration
Method 2001
(Y1 Direction)
No
500g
Condition A
(5000g)
Burn-in
Method 1015
24 Hrs @ +125 °C
96 Hrs @ +125 °C
160 Hrs @ +125 °C
Final Electrical Test
Method 5005 (Group A)
+25 °C
-45, +25, +100 °C
-55, +25, +125 °C
Full QorSeal
Full QorSeal
Yes
Yes
QorSeal
QorSeal
Mechanical Seal,
Thermal, and
Coating Process
External Visual
2009
*
Construction Process
Condition B
Condition C
(-55 °C to +125 °C) (-65 °C to +150 °C)
* Per IPC-A-610 Class 3
MilQor® Hi-Rel converters and filters are offered in three variations of environmental stress screening options. All ES-Grade and HB-Grade MilQor
Hi-Rel 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-270-12D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005043 Rev. I
12/30/15
Page 15
MQFL-270-12D
Output: ±12V
Current: 10A Total
Technical Specifications
MIL-STD-810F Qualification Testing
MIL-STD-810F Test
Fungus
Method
Description
508.5
Table 508.5-I
500.4 - Procedure I
Storage: 70,000 ft / 2 hr duration
500.4 - Procedure II
Operating: 70,000 ft / 2 hr duration; Ambient Temperature
Rapid Decompression
500.4 - Procedure III
Storage: 8,000 ft to 40,000 ft
Acceleration
513.5 - Procedure II
Operating: 15 g
Salt Fog
509.4
Storage
501.4 - Procedure I
Storage: 135°C / 3 hrs
501.4 - Procedure II
Operating: 100°C / 3 hrs
502.4 - Procedure I
Storage: -65°C / 4 hrs
502.4 - Procedure II
Operating: -55°C / 3 hrs
Altitude
High Temperature
Low Temperature
Temperature Shock
503.4 - Procedure I - C Storage: -65°C to 135°C; 12 cycles
Rain
506.4 - Procedure I
Wind Blown Rain
Immersion
512.4 - Procedure I
Non-Operating
Humidity
507.4 - Procedure II
Random Vibration
514.5 - Procedure I
10 - 2000 Hz, PSD level of 1.5 g2/Hz (54.6 grms), duration = 1 hr/axis
516.5 - Procedure I
20 g peak, 11 ms, Functional Shock (Operating no load) (saw tooth)
516.5 - Procedure VI
Bench Handling Shock
Shock
Sinusoidal vibration
Sand and Dust
Product# MQFL-270-12D
514.5 - Category 14
Aggravated cycle @ 95% RH (Figure 507.5-7 aggravated temp humidity cycle, 15 cycles)
Rotary wing aircraft - helicopter, 4 hrs/axis, 20 g (sine sweep from
10 - 500 Hz)
510.4 - Procedure I
Blowing Dust
510.4 - Procedure II
Blowing Sand
Phone 1-888-567-9596
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Doc.# 005-0005043 Rev. I
12/30/15
Page 16
MQFL-270-12D
Output: ±12V
Current: 10A Total
Technical Specifications
First Article Testing consistent with MIL-STD-883F
MIL-STD-883F Test
Method
Description
Electrical Tests
5005
Physical Dimensions test
2016
Resistance to Solvents test
2015.13
Solderability test
2003.8
Lead Integrity test
2004.5
Salt Atmosphere test
1009.8
Adhesion of Lead Finish test
2025.4
Altitude Operation test
1001
Condition “C”
ESD Sensitivity
3015.7
Class 2
Stabilization Bake test
1008.2
Condition “C”
Vibration Fatigue test
2005.2
Condition “A”
Random Vibration test
2026
Condition “II K”
Condition “A”
Sequential Test Group #1
Life Test – Steady State test
1005.8
Life Test – Intermittent Duty test
1006
Sequential Test Group #2
Temperature Cycle test
1010.8
Condition “C”
Constant Acceleration test
2001.2
Condition “A”
Thermal Shock test
1011.9
Condition “B”
Temperature Cycle test
1010.8
Condition “C”
Moisture Resistance test
1004.7
With Sub cycle
Mechanical Shock test
2002.4
Condition “B”
Variable Frequency Vibration test
2007.3
Condition “A”
Sequential Test Group #3
Sequential Test Group #4
Product# MQFL-270-12D
Phone 1-888-567-9596
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Doc.# 005-0005043 Rev. I
12/30/15
Page 17
MQFL-270-12D
Output: ±12V
Current: 10A Total
Mechanical Diagrams
1
2
3
4
5
6
SEE NOTE 7
+VIN
IN RTN
SHARE
MQFL-270-12D-X-ES
CASE
TRIM
DC-DC ConvErtEr
270vin ±12vout @ 10A
ENA 1
-VOUT
SYNC OUT
SYNC IN
12
11
10
9
8
7
ENA 2
MADE IN USA
OUT RTN
S/N 0000000 D/C 3205-301 CAGE 1WX10
+VOUT
0.250 [6.35]
1.50 [38.1]
0.040 [1.02]
PIN
2.50 [63.50]
2.760 [70.10]
3.00 [76.2]
0.22 [5.6]
0.228 [5.79]
0.390 [9.91]
SEE NOTE 7
6
+VIN
ENA 2
IN RTN
SHARE
MQFL-270-12D-U-ES
CASE
TRIM
DC-DC ConvErtEr
270vin ±12vout @ 10A
ENA 1
SYNC OUT
SYNC IN
0.050 [1.27]
0.128 [3.25]
2.96 [75.2]
1
2
3
4
5
0.200 [5.08]
TYP. NON-CUM.
1.260
[32.00]
-VOUT
MADE IN USA
S/N 0000000 D/C 3211-301 CAGE 1WX10
OUT RTN
+VOUT
12
11
10
9
8
7
2.50 [63.5]
2.760 [70.10]
3.00 [76.2]
Case X
0.250 [6.35]
0.200 [5.08]
TYP.
NON-CUM.
1.50 [38.1]
1.260
[32.00]
0.040
[1.02]
PIN
0.050 [1.27]
0.42
[10.7]
0.128 [3.25]
0.22 [5.6]
2.80 [71.1]
0.390 [9.91]
PIN DESIGNATIONS
NOTES
1)
2)
3)
4)
5)
6)
7)
8)
Pins 0.040’’ (1.02mm) diameter
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.
Product# MQFL-270-12D
Case U
Phone 1-888-567-9596
www.SynQor.com
Pin # Function
1
2
3
4
5
6
Pin # Function
Positive input
Input return
Case
Enable 1
Sync output
Sync input
Doc.# 005-0005043 Rev. I
7
8
9
10
11
12
Positive output
Output return
Negative Output
Trim
Share
Enable 2
12/30/15
Page 18
MQFL-270-12D
Output: ±12V
Current: 10A Total
Mechanical Diagrams
0.300 [7.62]
0.140 [3.56]
1.150 [29.21]
0.250 [6.35]
TYP
1
2
3
4
5
6
+VIN
ENA 2
IN RTN
SHARE
MQFL-270-12D-Y-ES
CASE
ENA 1
-VOUT
SYNC OUT
SYNC IN
TRIM
DC-DC ConvErtEr
270vin ±12vout @ 10A
MADE IN USA
S/N 0000000 D/C 3211-301 CAGE 1WX10
OUT RTN
+VOUT
1.750 [44.45]
12
2.000
11
[50.80]
10
1.50
9 [38.1]
8
1.750
7
[44.45]
0.250 [6.35]
0.200 [5.08]
TYP. NON-CUM.
0.040 [1.02]
PIN
0.050 [1.27]
0.22 [5.6]
0.375 [9.52]
2.50 [63.5]
2.96 [75.2]
0.228 [5.79]
0.390 [9.91]
Case Y
Case Z
(variant of Y)
0.250 [6.35]
Case W
(variant of Y)
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]
0.36 [9.14]
0.050 [1.27]
0.22 [5.6]
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
NOTES
1)
2)
3)
4)
5)
6)
7)
8)
Pins 0.040’’ (1.02mm) diameter
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.
Product# MQFL-270-12D
Phone 1-888-567-9596
www.SynQor.com
Pin # Function
1
2
3
4
5
6
Pin # Function
Positive input
Input return
Case
Enable 1
Sync output
Sync input
Doc.# 005-0005043 Rev. I
7
8
9
10
11
12
Positive output
Output return
Negative Output
Trim
Share
Enable 2
12/30/15
Page 19
MQFL-270-12D
Output: ±12V
Current: 10A 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
Full Size
MQFL-28
16-40Vin Cont.
16-50Vin 1s Trans.*
Dual Output †
1.5V
(1R5S)
1.8V
(1R8S)
2.5V
(2R5S)
3.3V
(3R3S)
5V
(05S)
6V
(06S)
7.5V
(7R5S)
9V
(09S)
12V
(12S)
15V
(15S)
28V
(28S)
5V
(05D)
12V
(12D)
15V
(15D)
40A
40A
40A
30A
24A
20A
16A
13A
10A
8A
4A
24A
Total
10A
Total
8A
Total
40A
40A
40A
30A
24A
20A
16A
13A
10A
8A
4A
24A
Total
10A
Total
8A
Total
40A
40A
40A
30A
20A
17A
13A
11A
8A
6.5A
3.3A
40A
40A
40A
30A
20A
17A
13A
11A
8A
6.5A
3.3A
40A
40A
40A
30A
24A
20A
16A
13A
10A
8A
4A
24A
Total
10A
Total
8A
Total
40A
40A
30A
22A
15A
12A
10A
8A
6A
5A
2.7A
15A
Total
6A
Total
5A
Total
1.5V
(1R5S)
1.8V
(1R8S)
2.5V
(2R5S)
3.3V
(3R3S)
5V
(05S)
6V
(06S)
7.5V
(7R5S)
9V
(09S)
12V
(12S)
15V
(15S)
28V
(28S)
5V
(05D)
12V
(12D)
15V
(15D)
20A
20A
20A
15A
10A
8A
6.6A
5.5A
4A
3.3A
1.8A
10A
Total
4A
Total
3.3A
Total
20A
20A
20A
15A
10A
8A
6.6A
5.5A
4A
3.3A
1.8A
10A
Total
4A
Total
3.3A
Total
10A
10A
10A
7.5A
5A
4A
3.3A
2.75A
2A
1.65A
0.9A
5A
Total
2A
Total
1.65A
Total
10A
10A
10A
7.5A
5A
4A
3.3A
2.75A
2A
1.65A
0.9A
5A
Total
2A
Total
1.65A
Total
Absolute Max Vin = 60V
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
MQFL-28VE
16-70Vin Cont.
5.5-80Vin 1s Trans.*
Absolute Max Vin = 100V
MQFL-270
155-400Vin Cont.
155-475Vin 1s Trans.*
Absolute Max Vin = 550V
MQFL-270L
65-350Vin Cont.
65-475Vin 1s Trans.*
Absolute Max Vin = 550V
Single Output
Half Size
MQHL-28
16-40Vin Cont.
16-50Vin 1s Trans.*
Dual Output †
Absolute Max Vin = 60V
MQHL-28E
16-70Vin Cont.
16-80Vin 1s Trans.*
Absolute Max Vin =100V
MQHR-28
16-40Vin Cont.
16-50Vin 1s Trans.*
Absolute Max Vin = 60V
MQHR-28E
16-70Vin Cont.
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 MILHDBK-1547A guidelines.
Product# MQFL-270-12D
Phone 1-888-567-9596
www.SynQor.com
Doc.# 005-0005043 Rev. I
12/30/15
Page 20
MQFL-270-12D
Output: ±12V
Current: 10A 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:
Input
Voltage
Range
Model
Name
28
28E
28V
28VE
MQFL
MQHL
MQHR
270
270L
MQFL-270-12D-Y-ES
Output Voltage(s)
Single
Output
Dual
Output
1R5S
1R8S
2R5S
3R3S
05S
06S
7R5S
09S
12S
15S
28S
05D
12D
15D
Package Outline/
Pin Configuration
Screening
Grade
U
X
Y
W
Z
C
ES
HB
APPLICATION NOTES
A variety of application notes and technical white papers can be downloaded in pdf format from the SynQor website.
Contact SynQor for further information and to order:
Phone:
Toll Free:
Fax:
E-mail:
Web:
Address:
Product# MQFL-270-12D
978-849-0600
1-888-567-9596
978-849-0602
[email protected]
www.synqor.com
155 Swanson Road
Boxborough, MA 01719
USA
Phone 1-888-567-9596
PATENTS
SynQor holds numerous U.S. patents, one or more of which apply to most of its power converter
products. Any that apply to the product(s) listed in this document are identified by markings on
the product(s) or on internal components of the product(s) in accordance with U.S. patent laws.
SynQor’s patents include the following:
5,999,417
6,222,742
6,545,890
6,594,159 6,731,520
6,894,468
6,896,526
6,927,987
7,050,309
7,072,190
7,085,146
7,119,524
7,269,034
7,272,021
7,272,023
7,558,083
7,564,702
7,765,687
7,787,261
8,023,290
8,149,597
8,493,751 8,644,027
9,143,042
Warranty
SynQor offers a two (2) year limited warranty. Complete warranty information
is listed on our website or is available upon request from SynQor.
www.SynQor.com
Doc.# 005-0005043 Rev. I
12/30/15
Page 21
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