MQFL-270-12D [SYNQOR]
HIGH RELIABILITY DC-DC CONVERTER; 高可靠性DC-DC转换器
| 型号： | MQFL-270-12D |
| 厂家： | 
SYNQOR WORLDWIDE HEADQUARTERS |
| 描述： | HIGH RELIABILITY DC-DC CONVERTER |
| 文件： | 总19页 (文件大小：1157K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MQFL-270-12D
Dual Output
HIGH RELIABILITY DC-DC CONVERTER
155-400 V
155-475 V
±12 V
10 A
87% @ 5 A / 89% @ 10 A
Continuous Input
Transient Input
Output
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.
-HB
10A
MQFL-270-12@D-Y
CONVERTER
±12Vout
DC/DC
Vin
270
Design Process
MQFL series converters are:
• Designed for reliability per NAVSO-P3641-A guidelines
D
F
ESIGNED & MANUFACTURED IN THE USA
EATURING OR -REL SSEMBLY
EAL™ H
Q
S
I
A
• Designed with components derated per:
— MIL-HDBK-1547A
Features
— NAVSO P-3641A
• Fixed switching frequency
• No opto-isolators
• Parallel operation with current share
• Remote sense
• Clock synchronization
• Primary and secondary referenced enable
Qualification Process
MQFL series converters are qualified to:
• MIL-STD-810F
— consistent with RTCA/D0-160E
• SynQor’s First Article Qualification
• Continuous short circuit and overload protection with
— consistent with MIL-STD-883F
auto-restart feature
• SynQor’s Long-Term Storage Survivability Qualification
• SynQor’s on-going life test
• Input under-voltage lockout/over-voltage shutdown
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-160E Section 16
• MIL-STD-1275B
• AS9100 and ISO 9001:2000 certified facility
• Full component traceability
• Temperature cycling
• DEF-STAN 61-5 (part 6)/5
• MIL-STD-461 (C, D, E)
• RTCA/DO-160E Section 22
• Constant acceleration
• 24, 96, 160 hour burn-in
• Three level temperature screening
Product # MQFL-270-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005043 Rev. A
05/26/09
Page 1
MQFL-270-12D
Output:
Current:
12V
10 A Total
Technical Specification
BLOCK DIAGRAM
ISOLATION STAGE
REGULATION STAGE
CURRENT
SENSE
1
7
Vin
POSITIVE
OUTPUT
T1
T1
T2
2
INPUT
RETURN
8
OUTPUT
RETURN
T2
3
CASE
GATE DRIVERS
9
UVLO
NEGATIVE
OUTPUT
CURRENT
LIMIT
OVSD
4
GATE DRIVERS
ENABLE 1
PRIMARY
CONTROL
MAGNETIC
12
5
ENABLE 2
SYNC OUT
11
DATA COUPLING
BIAS POWER
6
SECONDARY
CONTROL
SHARE
SYNC IN
10
TRIM
CONTROL
POWER
POSITIVE
OUTPUT
TRANSFORMER
1
2
3
12
open
means
on
+VIN
ENA 2
11
10
IN RTN
CASE
SHARE
TRIM
– VOUT
OUT RTN
+VOUT
+
MQFL
4
5
6
9
8
7
+
–
270 Vdc
Load
ENA 1
–
SYNC OUT
SYNC IN
+
open
means
on
Load
–
Product # MQFL-270-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005043 Rev. A
05/26/09
Page 2
MQFL-270-12D
Output:
Current:
12V
10 A Total
Technical Specification
MQFL-270-12D ELECTRICAL CHARACTERISTICS
Parameter
Min. Typ. Max. Units Notes & Conditions
Group A
Vin=270 V dc ±5%, Iout=10 A, CL=0 µF, free running (see Note 10)
unless otherwise specified
Subgroup
(see Note 13)
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
600
550
-0.8
-1.2
V
V
V
V
Operating
See Note 1
See Note 2
Reverse Bias (Tcase = 125ºC)
Reverse Bias (Tcase = -55ºC)
Isolation Voltage (I/O to case, I to O)
Continuous
-500
-800
-55
500
800
125
135
300
50
V
V
°C
°C
°C
V
Transient (≤100 µs)
Operating Case Temperature
Storage Case Temperature
Lead Temperature (20 s)
-65
Voltage at ENA1, ENA2
-1.2
INPUT CHARACTERISTICS
Operating Input Voltage Range
"
155
155
270
270
400
475
V
V
Continuous
Transient, 1 s
See Note 3
1, 2, 3
4, 5, 6
Input Under-Voltage Lockout
Turn-On Voltage Threshold
Turn-Off Voltage Threshold
Lockout Voltage Hysteresis
Input Over-Voltage Shutdown
Turn-Off Voltage Threshold
Turn-On Voltage Threshold
Shutdown Voltage Hysteresis
Maximum Input Current
142
133
5
150
140
11
155
145
17
V
V
V
1, 2, 3
1, 2, 3
1, 2, 3
See Note 3
490
450
20
520
475
50
550
500
80
1
37
4
V
V
V
A
mA
mA
mA
mA
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
Vin = 155 V; Iout = 10 A
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
28
1
6
140
Vin = 155 V, 270 V, 475 V
Vin = 155 V, 270 V, 475 V
Bandwidth = 100 kHz – 10 MHz; see Figure 20
11
180
1
1
2, 3
1
1
2, 3
11.88 12.00 12.12
-12.12 -12.00 -11.88
V
V
Negative Output
Output Voltage Set Point Over Temperature
Positive Output
11.82 12.00 12.18
-12.18 -12.00 -11.82
-20
50
11.76 12.00 12.24
200
V
V
mV
mV
V
mV
mV
A
A
W
A
A
A
mA
µF
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
0
65
20
80
Vin = 155 V, 270 V, 475 V; Iout=10 A
Vout @ (Iout=0 A) - Vout @ (Iout=10 A)
"
Bandwidth = 10 MHz; CL=11µF
Bandwidth = 10 MHz; CL=11µF
(+Iout) + (–Iout)
Maximum +Iout or –Iout
Total on both outputs
+Iout + –Iout; +Iout = –Iout; See Note 4
Vout ≤ 1.2 V; see Note 15
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
450
20
700
80
10
8
120
12.5
15.5
0
0
0
10.5
10.5
11.5
13
3.5
10
75
3,000
Total on both outputs
See Note 6
-900
-600
600
300
mV
mV
µs
Total Iout step = 5A‹-›10A, 1A‹-›5A; CL=11µF
4, 5, 6
4, 5, 6
4, 5, 6
900
500
"
See Note 7
Vin step = 155V‹-›475V; CL=11 µF; see Note 8
-2000
-2200
2000
2200
600
mV
mV
µs
"
"
4, 5, 6
4, 5, 6
See Note 5
450
Iout = 5 A; See Note 7
Output Voltage Rise Time
6
0
75
5
2
10
2
120
10
4
ms
%
ms
ms
ms
Vout = 1.2V-›10.8V
4, 5, 6
See Note 5
4, 5, 6
4, 5, 6
4, 5, 6
Output Voltage Overshoot
Turn-On Delay, Rising Vin
50
ENA1, ENA2 = 5 V; see Notes 9 & 11
ENA2 = 5 V; see Note 11
ENA1 = 5 V; see Note 11
Turn-On Delay, Rising ENA1
Turn-On Delay, Rising ENA2
Product # MQFL-270-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005043 Rev. A
05/26/09
Page 3
MQFL-270-12D
Output:
Current:
12V
10 A Total
Technical Specification
MQFL-270-12D ELECTRICAL CHARACTERISTICS (Continued)
Parameter
Min. Typ. Max. Units Notes & Conditions
Group A
Vin=270 V dc ±5%, Iout=10 A, CL=0 µF, free running (see Note 10)
unless otherwise specified
Subgroup
(see Note 13)
EFFICIENCY
Iout = 10 A (155 Vin)
85
86
84
83
81
77
90
90
89
87
86
83
22
24
%
%
%
%
%
%
%
%
1, 2, 3
1, 2, 3
Iout = 5 A (155 Vin)
Iout = 10 A (270 Vin)
1, 2, 3
Iout = 5 A (270 Vin)
1, 2, 3
Iout = 10 A (400 Vin)
1, 2, 3
Iout = 5 A (400 Vin)
1, 2, 3
Load Fault Power Dissipation
Short Circuit Power Dissipation
ISOLATION CHARACTERISTICS
Isolation Voltage
36
43
1, 2, 3
See Note 5
Dielectric strength
Input RTN to Output RTN
Any Input Pin to Case
500
500
500
100
100
V
V
1
1
1
1
1
1
Any Output Pin to Case
Isolation Resistance (in rtn to out rtn)
Isolation Resistance (any pin to case)
Isolation Capacitance (in rtn to out rtn)
FEATURE CHARACTERISTICS
Switching Frequency (free running)
Synchronization Input
V
MΩ
MΩ
nF
44
500
550
600
kHz
1, 2, 3
Frequency Range
500
2
-0.5
20
700
5.5
0.8
80
kHz
V
V
%
1, 2, 3
1, 2, 3
1, 2, 3
Logic Level High
Logic Level Low
Duty Cycle
See Note 5
Synchronization Output
Pull Down Current
Duty Cycle
20
25
mA
%
VSYNC OUT = 0.8 V
Output connected to SYNC IN of other MQFL unit
See Note 5
See Note 5
80
Enable Control (ENA1 and ENA2)
Off-State Voltage
Module Off Pulldown Current
On-State Voltage
Module On Pin Leakage Current
Pull-Up Voltage
0.8
V
µA
V
µA
V
1, 2, 3
See Note 5
1, 2, 3
See Note 5
1, 2, 3
80
2
Current drain required to ensure module is off
20
4.5
Imax draw from pin allowed with module still on
See Figure A
3.2
4.0
RELIABILITY CHARACTERISTICS
Calculated MTBF (MIL-STD-217F2)
GB @ Tcase = 70ºC
2600
290
TBD
103 Hrs.
103 Hrs.
103 Hrs.
AIF @ Tcase = 70ºC
Demonstrated MTBF
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 = 135º C.
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 100º C and a maximum
junction temperature rise of 20º C above TCASE.
16. Converter delivers current into a persisting short circuit for up to 1 second. See Current Limit in the Application Notes section.
Product # MQFL-270-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005043 Rev. A
05/26/09
Page 4
MQFL-270-12D
Output:
Current:
12V
10 A Total
Technical Specification
100
95
90
85
80
75
70
65
60
22
20
18
16
14
12
10
8
6
155 Vin
270 Vin
400 Vin
155 Vin
270 Vin
400 Vin
4
2
0
0
20
40
60
80
100
120
0
20
40
60
80
100
120
Total Output Power (W)
Total Output Power (W)
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
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 out-
minimum, nominal, and maximum input voltage at 25
°
C.
put at minimum, nominal, and maximum input voltage at 25
°
C.
100
95
90
85
80
75
70
65
60
22
20
18
16
14
12
10
8
6
155 Vin
270 Vin
400 Vin
155 Vin
270 Vin
400 Vin
4
2
0
8/0
7/1
6/2
5/3
4/4
3/5
2/6
1/7
0/8
8/0
7/1
6/2
5/3
4/4
3/5
-Iout
2/6
1/7
0/8
Load Current (A), +Iout
/
Load Current (A), +Iout / -Iout
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
Figure 4: Power dissipation vs. output current, with total output cur-
rent 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.
25
°C.
100
16
95
90
85
80
75
70
65
60
14
12
10
8
6
4
155 Vin
270 Vin
400 Vin
155 Vin
270 Vin
400 Vin
2
0
-55ºC
25ºC
85ºC
125ºC
-55ºC
25ºC
85ºC
125ºC
Case Temperature (ºC)
Case Temperature (ºC)
Figure 5: Efficiency at 60% load (3A load on +12V and 3A load on
Figure 6: Power dissipation at 60% load (3A load on +12V and 3A
-12V) versus case temperature for Vin = 155V, 270V, and 400V.
load on -12V) versus case temperature for Vin =155V, 270V, and 400V.
Product # MQFL-270-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005043 Rev. A
05/26/09
Page 5
MQFL-270-12D
Output:
Current:
12V
10 A Total
Technical Specification
12.8
-12.8
-12.6
-12.4
-12.2
-12.0
-11.8
-11.6
-11.4
-11.2
12.8
12.6
12.4
12.2
12.0
11.8
11.6
11.4
11.2
-12.8
Input voltage has virtually no
Input voltage has virtually no
effect on cross regulation
12.6
-12.6
-12.4
-12.2
-12.0
-11.8
-11.6
-11.4
-11.2
effect on cross regulation
12.4
12.2
12.0
11.8
11.6
+Vout
+Vout
-Vout
11.4
-Vout
11.2
8 / 2
6 / 4
5 / 5
+IOUT (A) -IOUT (A)
4 / 6
2 / 8
8 / 0
6 / 2
4 / 4
+IOUT (A) -IOUT (A)
2 / 6
0 / 8
/
/
Figure 7: Load regulation vs. load current with power fixed at full load
Figure 8: Load regulation vs. load current with power fixed at 80%
(120W) and load currents split as shown between the +12V and -12V
load (96W) and load currents split as shown between the +12V and
outputs, at nominal input voltage and T
= 25ºC.
-12V outputs, at nominal input voltage and T
= 25ºC.
CASE
CASE
12.5
12.4
12.3
12.2
12.1
12.0
11.9
11.8
11.7
11.6
11.5
-12.5
-12.4
-12.3
-12.2
-12.1
-12.0
-11.9
-11.8
-11.7
-11.6
-11.5
12.5
12.4
12.3
12.2
12.1
12.0
11.9
11.8
11.7
11.6
11.5
-12.5
-12.4
-12.3
-12.2
-12.1
-12.0
-11.9
-11.8
-11.7
-11.6
-11.5
Input voltage has virtually no
Input voltage has virtually no
effect on cross regulation
effect on cross regulation
+Vout
-Vout
+Vout
-Vout
0
24
48
72
96
120
0
24
48
72
96
120
Total Output Power (W)
Total Output Power (W)
Figure 9: Load regulation vs. total output power from zero to to full
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
load where -Iout equals three times +Iout at nominal input voltage and
T
= 25ºC.
T
= 25ºC.
CASE
CASE
14
14
168
144
120
96
12
10
8
12
10
8
6
72
6
4
48
4
Tjmax
Tjmax
Tjmax
= 105ºC
= 125ºC
= 145ºC
2
24
2
270 Vin
0
0
0
25
45
65
85
105
125
145
135
0
2
4
6
8
10
12
14
Case Temperature (ºC)
Load Current (A)
Figure 11: Output Current / Output Power derating curve as a function
of T 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. See Current Limit section in the
Application Notes section.
CASE
Product # MQFL-270-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005043 Rev. A
05/26/09
Page 6
MQFL-270-12D
Output:
Current:
12V
10 A Total
Technical Specification
+Vout
+Vout
-Vout
-Vout
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).
+Vout
+Vout
-Vout
-Vout
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) (20ms/div). Ch 1: +Vout (5V/
div); Ch 2: -Vout (5V/div); Ch 3: Vin (10V/div).
+Vout
+Iout
+Vout
+Iout
-Vout
-Iout
-Vout
-Iout
Figure 17: Output voltage response to step-change in total load cur-
Figure 18: Output voltage response to step-change in total load current
rent (50%-100%-50%) of total Iout (max) split 50%/50%. Load cap: 1
ceramic cap and 10 F, 100 m 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).
µ
F
(0%-50%-0%) of total Iout (max) split 50%/50%. Load cap: 1
cap and 10 F, 100 m ESR tantalum cap. Ch 1: +Vout (1 V/div);
2: +Iout (5A/div); Ch 3: -Vout (1 V/div); Ch 4: -Iout (5A/div).
µ
F ceramic
µ
W
µ
W
Ch
Product # MQFL-270-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005043 Rev. A
05/26/09
Page 7
MQFL-270-12D
Output:
Current:
12V
10 A Total
Technical Specification
See Fig. 22
See Fig. 21
+VOUT
IC
MQME
Filter
MQFL
Converter
RTN
–VOUT
VSOURCE
1 µF
10 µF,
ceramic
100mΩ ESR
capacitors
capacitors
Figure 19: Output voltage response to step-change in input voltage (16V - 50V
- 16V). Load cap: 10µF, 100 mW 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 21: Input terminal current ripple, i , at full rated output current
and nominal input voltage with SynQor MQ filter module (50 mA/div).
Bandwidth: 20MHz. See Figure 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 Figure 20.
c
Figure 24: SYNC OUT vs. time, driving SYNC IN of a second SynQor
MQFL converter.
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).
Product # MQFL-270-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005043 Rev. A
05/26/09
Page 8
MQFL-270-12D
Output:
Current:
12V
10 A Total
Technical Specification
1
1
0.1
0.1
0.01
0.01
155 Vin
270 Vin
400Vin
155 Vin
270 Vin
400 Vin
0.001
0.0001
0.001
0.0001
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 (+Zout = +vout /+iout
)
Figure 26: Magnitude of incremental output impedance (-Zout = -vout /-iout) for
for minimum, nominal, and maximum input voltage at full rated power.
minimum, nominal, and maximum input voltage at full rated power.
0
-10
-20
-30
-40
-50
-60
-70
0
-10
-20
-30
-40
-50
-60
-70
155 Vin
155 Vin
-80
-80
270 Vin
270 Vin
-90
-90
400 Vin
400 Vin
-100
-100
10
100
1,000
Hz
10,000
100,000
10
100
1,000
Hz
10,000
100,000
Figure 27: Magnitude of incremental forward transmission (+FT = +vout /vin)
Figure 28: Magnitude of incremental forward transmission (-FT = -vout /vin)
for minimum, nominal, and maximum input voltage at full rated power.
for minimum, nominal, and maximum input voltage at full rated power.
-5
-10
-15
-20
-25
-30
-35
-40
-5
-10
-15
-20
-25
-30
-35
-40
155 Vin
155 Vin
-45
-45
270 Vin
270 Vin
-50
-50
400 Vin
400 Vin
-55
-55
10
100
1,000
Hz
10,000
100,000
10
100
1,000
Hz
10,000
100,000
Figure 29: Magnitude of incremental reverse transmission (+RT = iin /+iout
)
Figure 30: Magnitude of incremental reverse transmission (-RT = iin /-iout) for
for minimum, nominal, and maximum input voltage at full rated power.
minimum, nominal, and maximum input voltage at full rated power.
Product # MQFL-270-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005043 Rev. A
05/26/09
Page 9
MQFL-270-12D
Output:
Current:
12V
10 A Total
Technical Specification
10000
1000
100
155 Vin
10
270 Vin
400 Vin
1
10
100
1,000
Hz
10,000
100,000
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 31: Magnitude of incremental input impedance (Z = v /i
for minimum, nominal, and maximum input voltage at full rated power
with 50% / 50% split.
)
in
in in
Figure 33: High frequency conducted emissions of MQFL-270-05S,
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. A
05/26/09
Page 10
MQFL-270-12D
Output:
Current:
12V
10 A Total
Technical Specification
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
transformers 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
output over-voltage limit or an over-temperature shutdown.
The following sections describe the use and operation of addi-
tional control features provided by the MQFL converter.
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.
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 con-
verter’s input return (pin 2). The ENA2 pin (pin 12) is refer-
enced 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.
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.
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
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.
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 con-
verter’s output terminals if the load is a source of short or long
term energy. The MQFL converters employ a “back-drive cur-
rent limit” to keep this negative output terminal current small.
5.0V
68K
1N4148
PIN 4
(or PIN 12)
ENABLE
TO ENABLE
CIRCUITRY
250K
125K
2N3904
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.
PIN 2
(or PIN 8)
IN RTN
Figure A: Equivalent circuit looking into either the ENA1 or ENA2
pins with respect to its corresponding return pin.
An input under-voltage lockout feature with hysteresis is pro-
vided, 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-
Product # MQFL-270-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005043 Rev. A
05/26/09
Page 11
MQFL-270-12D
Output:
Current:
12V
10 A Total
Technical Specification
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 interpret-
ed as a logic low, and its high value should be above 2.0V
to be guaranteed to be interpreted as a logic high. The transi-
tion time between the two states should be less than 300ns.
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 cur-
rents 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.
If the MQFL converter is not to be synchronized, the SYNC IN
pin should be left open circuit. The converter will then oper-
ate 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.
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 kW.
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.
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 approxi-
mately 2ms before the converter restarts.
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: Converters operating from separate input filters with
reverse polarity protection (such as the MQME-270-T filter)
with their outputs connected in parallel may exhibit auto-restart
operation at light loads. Consult factory for details.
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.
5V
Figure B shows the equivalent circuit looking into the SYNC
IN pin. Figure C shows the equivalent circuit looking into the
SYNC OUT pin.
5K
SYNC OUT
FROM SYNC
CIRCUITRY
PIN 5
5V
IN RTN
PIN 2
OPEN COLLECTOR
5K
OUTPUT
TO SYNC
CIRCUITRY
PIN 6
Figure C: Equivalent circuit looking into SYNC OUT pin with
respect to the IN RTN (input return) pin.
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-270-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005043 Rev. A
05/26/09
Page 12
MQFL-270-12D
Output:
Current:
12V
10 A Total
Technical Specification
OUTPUT VOLTAGE TRIM: If desired, it is possible to increase or
decrease the MQFL dual converter’s output voltage from its nominal
value. To increase the output voltage a resistor, Rup, should be con-
nected 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:
10,000.0
1,000.0
100.0
10.0
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).
1.0
-2
-1.5
-1
-0.5
0
0.5
1
The maximum value of output voltage that can be achieved is
5.5V.
Change in Vout (V)
Figure E: Change in Output Voltage Graph
To decrease the output voltage a resistor, Rdown, should be con-
nected 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:
rent and temperature range. Please consult the factory for details.
Factory trimmed converters are available by request.
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 thresh-
old 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
Vnom
Vout – 2.5
– 1
– 5
Rdown = 10 x
x
[
2.5 ] [Vnom – Vout ]
where:
Vnom = the converter’s nominal output voltage,
Vout = the desired output voltage (less than Vnom), and
in that state for more than about 200 s. This hysteresis and the
µ
Rdown is in kiloOhms (kW).
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 cur-
1
12
+VIN
ENA 2
SHARE
TRIM
open
means
on
2
11
10
IN RTN
3
CASE
+
MQFL-270-12D
Rup
4
5
6
9
8
7
+
–
270 Vdc
Load
Load
ENA 1
– VOUT
OUT RTN
+VOUT
Rdown
–
SYNC OUT
SYNC IN
+
open
means
on
–
Figure D: Typical connection for output voltage trimming.
Product # MQFL-270-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005043 Rev. A
05/26/09
Page 13
MQFL-270-12D
Output:
Current:
12V
10 A Total
Technical Specification
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 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
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 web-
site which provides an understanding of why this instability
arises, and shows the preferred solution for correcting it.
- 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 con-
verter 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 operat-
ing range, there is no startup inhibit, and the output voltage will
rise according to the “Turn-On Delay, Rising Vin” specification.
THERMAL CONSIDERATIONS: Figure 11 shows the sug-
gested 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.
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 nomi-
nal 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.
The Mil-HDBK-1547A component derating guideline calls for a
maximum component temperature of 105ºC. Figure 11 there-
fore has one power derating curve that ensures this limit is main-
tained. 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 con-
verter should be operated is 135ºC.
In a system with multiple converters configured for load sharing
using the SHARE pin, if the auto-restart feature engages, the con-
verters will synchronize their restart using signals communicated
on the SHARE pin.
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 adhe-
sive 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 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 dur-
ing a shutdown transient.
Product # MQFL-270-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005043 Rev. A
05/26/09
Page 14
MQFL-270-12D
Output:
Current:
12V
10 A Total
Technical Specification
CONSTRUCTION AND ENVIRONMENTAL STRESS SCREENING OPTIONS
ES-Grade
(-55 ºC to +125 ºC)
(Element Evaluation)
HB-Grade
(-55 ºC to +125 ºC)
(Element Evaluation)
Consistent with
MIL-STD-883F
C-Grade
(-40 ºC to +100 ºC)
Screening
Internal Visual
Yes
No
Yes
Yes
*
Condition B
(-55 ºC to +125 ºC)
Condition C
(-65 ºC to +150 ºC)
Temperature Cycle
Method 1010
Constant
Acceleration
Method 2001
(Y1 Direction)
Condition A
(5000g)
No
500g
Method 1015
Load Cycled
Burn-in
• 10s period
24 Hrs @ +125 ºC
96 Hrs @ +125 ºC
160 Hrs @ +125 ºC
• 2s @ 100% Load
• 8s @ 0% Load
Method 5005
(Group A)
Final Electrical Test
+25 ºC
-45, +25, +100 ºC
Full QorSeal
-55, +25, +125 ºC
Full QorSeal
Mechanical Seal,
Thermal, and Coating
Process
Full QorSeal
External Visual
2009
Yes
Yes
*
Construction Process
QorSeal
QorSeal
QorSeal
* Per IPC-A-610 (Rev. D) Class 3
MilQor converters and filters are offered in four variations of construction technique and environmental stress screening options. The
three highest grades, C, ES, and HB, all 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 con-
structed 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. A
05/26/09
Page 15
MQFL-270-12D
Output:
Current:
12V
10 A Total
Technical Specification
0.093
[2.36]
0.250 [6.35]
0.200 [5.08]
+VIN
ENA 2
1
12
IN RTN
SHARE
2
11
1.50 [38.10]
MQFL-270-12D-X-HB
DC-DC CONVERTER
270Vin ±12out @ 10 A
CASE
TRIM
-VOUT
3
4
5
6
10 1.260
TYP. NON-CUM.
[32.00]
ENA 1
9
8
7
MADE IN USA
OUT RTN
+VOUT
SYNC OUT
SYNC IN
0.040 [1.02]
PIN
S/N 0000000 D/C 3205-301 CAGE 1WX10
2.50 [63.50]
2.76 [70.10]
3.00 [76.20]
0.050 [1.27]
0.220 [5.59]
0.128 [3.25]
2.96 [75.2]
0.228 [5.79]
0.390 [9.91]
Case X
0.093
[2.36]
0.250 [6.35]
+VIN
ENA 2
1
12
11
0.200 [5.08]
TYP. NON-CUM.
IN RTN
CASE
SHARE
2
3
4
5
6
1.50 [38.10]
MQFL-270-12D-U-HB
DC-DC CONVERTER
270Vin ±12out @ 10 A
TRIM
-VOUT
10 1.260
[32.00]
ENA 1
9
8
7
OUT RTN
+VOUT
SYNC OUT
SYNC IN
MADE IN USA
0.040 [1.02]
PIN
S/N 0000000 D/C 3205-301 CAGE 1WX10
0.42
[10.7]
2.50 [63.50]
2.76 [70.10]
3.00 [76.20]
0.050 [1.27]
0.220 [5.59]
0.128 [3.25]
2.80 [71.1]
Case U
0.390 [9.91]
NOTES
PIN DESIGNATIONS
1)
2)
Pins 0.040” (1.02mm) diameter
Pin Function
Pin Function
12 Enable 2
11 Share
Pins Material: Copper
Finish: Gold over Nickel plate
1
2
3
4
5
6
Positive input
Input return
CASE
3)
All dimensions in inches (mm) Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm)
x.xxx +/-0.010 in. (x.xx +/-0.25mm)
10 Trim
4)
5)
6)
Weight: 2.8 oz (78.5 g) typical
Enable 1
9
8
7
Negative output
Workmanship: Meets or exceeds IPC-A-610C Class III
Print Labeling on Top Surface per Product Label Format Drawing
Sync output
Sync input
Output return
Positive output
Product # MQFL-270-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005043 Rev. A
05/26/09
Page 16
MQFL-270-12D
Output:
Current:
12V
10 A Total
Technical Specification
0.300 [7.62]
0.140 [3.56]
1.15 [29.21]
0.250 [6.35]
TYP
0.250 [6.35]
1
2
3
4
5
6
+VIN
12
ENA 2
2.00
[50.80]
IN RTN
CASE
SHARE
TRIM
11
10
9
0.200 [5.08]
MQFL-270-12D-Y-HB
DC-DC CONVERTER
270Vin ±12out @ 10 A
1.50
[38.10]
TYP.
-VOUT
ENA 1
NON-CUM.
OUT RTN
+VOUT
SYNC OUT
SYNC IN
MADE IN USA
8
1.750
[44.45]
S/N 0000000 D/C 3205-301 CAGE 1WX10
7
0.040
[1.02]
PIN
0.050 [1.27]
0.220 [5.59]
1.750 [44.45]
2.50 [63.50]
0.375 [9.52]
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
0.420 [10.7]
0.050 [1.27]
0.220 [5.59]
0.220 [5.59]
0.050 [1.27]
0.36 [9.2]
2.80 [71.1]
0.525 [13.33]
0.390
[9.91]
0.390
[9.91]
0.525 [13.33]
2.80 [71.1]
PIN DESIGNATIONS
Pin Function Pin Function
NOTES
1)
2)
Pins 0.040” (1.02mm) diameter
Pins Material: Copper
1
2
3
4
5
6
Positive input
Input return
CASE
Enable 1
Sync output
Sync input
12 Enable 2
11 Share
10 Trim
Finish: Gold over Nickel plate
3)
All dimensions in inches (mm) Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm)
x.xxx +/-0.010 in. (x.xx +/-0.25mm)
9
8
7
Negative output
Output return
Positive output
4)
5)
6)
Weight: 2.8 oz (78.5 g) typical
Workmanship: Meets or exceeds IPC-A-610C Class III
Print Labeling on Top Surface per Product Label Format Drawing
Product # MQFL-270-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005043 Rev. A
05/26/09
Page 17
MQFL-270-12D
Output:
Current:
12V
10 A Total
Technical Specification
MilQor Converter FAMILY MATRIX
The tables below show the array of MQFL 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 †
28V
1.5V
1.8V
2.5V
3.3V
5V
6V
7.5V
9V
12V
(12S)
15V
(15S)
±5V
(05D)
±12V
(12D)
±15V
(15D)
Full Size
(1R5S) (1R8S) (2R5S) (3R3S) (05S)
(06S) (7R5S) (09S)
(28S)
MQFL-28
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.
16-80Vin 1s Trans.*
Absolute Max Vin =100V
24A
Total
10A
Total
8A
Total
MQFL-28V
16-40Vin Cont.
5.5-50Vin 1s Trans.*
Absolute Max Vin = 60V
20A
Total
8A
Total
6.5A
Total
6.5A
6.5A
8A
3.3A
3.3A
4A
MQFL-28VE
16-70Vin Cont.
5.5-80Vin 1s Trans.*
Absolute Max Vin = 100V
20A
Total
8A
Total
6.5A
Total
8A
MQFL-270
155-400Vin Cont.
155-475Vin 0.1s Trans.*
Absolute Max Vin = 550V
24A
Total
10A
Total
8A
Total
10A
Single Output
Dual Output †
28V
1.5V
1.8V
2.5V
3.3V
5V
6V
7.5V
9V
12V
(12S)
15V
(15S)
±5V
(05D)
±12V
(12D)
±15V
(15D)
Half Size
(1R5S) (1R8S) (2R5S) (3R3S) (05S)
(06S) (7R5S) (09S)
(28S)
MQHL-28 (50W)
16-40Vin Cont.
16-50Vin 1s Trans.*
Absolute Max Vin = 60V
10A
Total
4A
Total
3.3A
Total
20A
20A
20A
20A
20A
20A
15A
15A
10A
10A
8A
8A
6.6A
6.6A
5.5A
5.5A
4A
4A
3.3A
3.3A
1.8A
1.8A
MQHL-28E (50W)
16-70Vin Cont.
16-80Vin 1s Trans.*
Absolute Max Vin =100V
10A
Total
4A
Total
3.3A
Total
MQHR-28 (25W)
16-40Vin Cont.
16-50Vin 1s Trans.*
Absolute Max Vin = 60V
5A
Total
2A
Total
1.65A
Total
10A
10A
10A
10A
10A
10A
7.5A
7.5A
5A
5A
4A
4A
3.3A
3.3A
2.75A
2.75A
2A
2A
1.65A
1.65A
0.9A
0.9A
MQHR-28E (25W)
16-70Vin Cont.
16-80Vin 1s Trans.*
Absolute Max Vin =100V
5A
Total
2A
Total
1.65A
Total
Check with factory for availability.
†80% of total output current available on any one output.
Product # MQFL-270-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005043 Rev. A
05/26/09
Page 18
MQFL-270-12D
Output:
Current:
12V
10 A Total
Technical Specification
PART NUMBERING SYSTEM
The part numbering system for SynQor’s MilQor DC-DC converters follows the format shown in the table below.
Output Voltage(s)
Input
Model
Name
Package Outline/
Pin Configuration
Screening
Grade
Voltage
Range
Single
Output
Dual
Output
1R5S
1R8S
2R5S
3R3S
05S
06S
7R5S
09S
28
28E
28V
28VE
U
X
Y
W
Z
C
ES
HB
MQFL
MQHL
MQHR
05D
12D
15D
270
12S
15S
28S
MQFL – 270 – 12D – Y – ES
Example:
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 patents, one or more of which might apply to this product:
5,999,417
6,927,987
6,222,742
7,050,309
6,545,890
7,072,190
6,577,109
7,085,146
6,594,159
7,119,524
6,731,520
7,269,034
6,894,468
7,272,021
6,896,526
7,272,023
Contact SynQor for further information:
Phone:
978-849-0600
Warranty
SynQor offers a two (2) year limited warranty. Complete warranty
information is listed on our website or is available upon request from
SynQor.
Toll Free: 888-567-9596
Fax:
978-849-0602
E-mail:
Web:
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-270-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005043 Rev. A
05/26/09
Page 19
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