MQFL-28-12S-Z-C [SYNQOR]
DC-DC Regulated Power Supply Module, 1 Output, 120W, Hybrid, MODULE-12;
| 型号： | MQFL-28-12S-Z-C |
| 厂家： | 
SYNQOR WORLDWIDE HEADQUARTERS |
| 描述： | DC-DC Regulated Power Supply Module, 1 Output, 120W, Hybrid, MODULE-12 |
| 文件： | 总18页 (文件大小：708K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MQFL-28-12D
Dual Output
HIGH RELIABILITY DC/DC CONVERTER
16-40V
16-50V
12V
10A
91% @ 5A / 89% @ 10A
Efficiency
Continuous Input Transient Input Output Output
FULL POWER OPERATION: -55ºC TO +125ºC
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Design Process
D
F
ESIGNED & MANUFACTURED IN THE USA
MQFL series converters are:
EATURING
QORS
EAL™ H
I-REL
ASSEMBLY
• Designed for reliability per NAVSO-P3641-A guidelines
• Designed with components derated per:
— MIL-HDBK-1547A
— NAVSO P-3641A
Features
• Fixed switching frequency
• No opto-isolators
Qualification Process
• Parallel operation with current share
• Clock synchronization
• Primary and secondary referenced enable
• Continuous short circuit and overload protection
• Input under-voltage lockout/over-voltage shutdown
MQFL series converters are qualified to:
• MIL-STD-810F
— consistent with RTCA/D0-160E
• SynQor’s First Article Qualification
— consistent with MIL-STD-883F
• SynQor’s Long-Term Storage Survivability Qualification
• SynQor’s on-going life test
Specification Compliance
In-Line Manufacturing Process
MQFL series converters (with MQME filter) are designed to meet:
• MIL-HDBK-704-8 (A through F)
• RTCA/DO-160E Section 16
• MIL-STD-1275B
• DEF-STAN 61-5 (part 6)/5
• MIL-STD-461 (C, D, E)
• AS9100 and ISO 9001:2000 certified facility
• Full component traceability
• Temperature cycling
• Constant acceleration
• 24, 96, 160 hour burn-in
• RTCA/DO-160E Section 22
• Three level temperature screening
Product # MQFL-28-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2MQ120D Rev. A
10/23/07
Page 1
MQFL-28-12D
Output:
Current:
±12 V
10 A Total
Technical Specification
BLOCK DIAGRAM
REGULATION STAGE
ISOLATION STAGE
7
CURRENT
SENSE
1
POSITIVE
POSITIVE
INPUT
OUTPUT
T1
T2
T1
T2
2
8
INPUT
RETURN
OUTPUT
RETURN
T1
T2
3
CASE
9
GATE DRIVERS
NEGATIVE
OUTPUT
UVLO
OVSD
GATE DRIVERS
CURRENT
LIMIT
4
MAGNETIC
12
ENABLE 2
ENABLE 1
PRIMARY
CONTROL
5
11
SHARE
DATA COUPLING
SECONDARY
CONTROL
SYNC OUTPUT
10
6
TRIM
SYNC INPUT
BIAS POWER
CONTROL
POWER
POSITIVE
OUTPUT
TRANSFORMER
TYPICAL CONNECTION DIAGRAM
1
12
+VIN
ENA 2
open
means
on
2
11
IN RTN
SHARE
3
10
CASE
TRIM
+
MQFL
4
5
6
9
+
–
28Vdc
Load
Load
ENA 1
– VOUT
–
8
SYNC OUT
SYNC IN
OUT RTN
+
open
means
on
7
+VOUT
–
Product # MQFL-28-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2MQ120D Rev. A
10/23/07
Page 2
MQFL-28-12D
Output:
Current:
±12 V
10 A Total
Technical Specification
MQFL-28-12D ELECTRICAL CHARACTERISTICS
Parameter
Min. Nom. Max. Units Notes & Conditions
Group A
F, free running Subgroup14
10
Vin=28V DC 5%, +Iout = –Iout = 5A, CL = 0
unless otherwise specified
µ
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
60
60
-0.8
-1.2
V
V
V
V
Operating 1
Reverse Bias (TCASE = 125ºC)
Reverse Bias (TCASE = -55ºC)
Isolation Voltage (input/output to case, input to output)
Continuous
-500
-800
-55
500
800
135
135
300
50
V
V
°C
°C
°C
V
Transient (≤100 µs)
Operating Case Temperature 2
Storage Case Temperature
-65
Lead Temperature (20 sec)
Voltage at ENA1, ENA2, SYNC IN
INPUT CHARACTERISTICS
Operating Input Voltage Range (continuous)
Operating Input Voltage Range (transient, 1 sec)
Input Under-Voltage Lockout 3
-1.2
16
16
28
28
40
50
V
V
1, 2, 3
4, 5, 6
Turn-On Voltage Threshold
14.75
13.80
0.5
15.50
14.40
1.1
16.00
15.00
1.8
V
V
V
1, 2, 3
1, 2, 3
1, 2, 3
Turn-Off Voltage Threshold
Lockout Voltage Hysteresis
Input Over-Voltage Shutdown 3
Turn-Off Voltage Threshold
54.0
50.0
2.0
56.8
51.4
5.3
60.0
54.0
8.0
9.5
160
5
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
Turn-On Voltage Threshold
Shutdown Voltage Hysteresis
Maximum Input Current
Vin = 16V; +Iout = –Iout = 5A
No Load Input Current (operating)
Disabled Input Current (ENA1)
110
2
25
40
Vin = 16V, 28V, 50V
Vin = 16V, 28V, 50V
Bandwidth = 100 kHz – 10 MHz; see Figure 20
Disabled Input Current (ENA2)
50
60
Input Terminal Current Ripple (peak to peak)
OUTPUT CHARACTERISTICS
Output Voltage Set Point (TCASE = 25ºC)
Positive Output 12
+11.88
-12.12
+12.00
-12.00
+12.12
-11.88
V
V
1
1
Negative Output 12
Output Voltage Set Point Over Temperature
Positive Output 12
+11.82
-12.18
-20
50
11.76
200
+12.00
-12.00
0
+12.18
-11.82
20
V
V
mV
mV
V
mV
mV
A
A
W
A
A
A
mA
µF
2, 3
2, 3
Negative Output 12
Positive Output Voltage Line Regulation 12
Positive Output Voltage Load Regulation 12
Total Positive Output Voltage Range 12
Output Voltage Cross Regulation (Negative Output) 11,12
Output Voltage Ripple and Noise Peak to Peak
Total Operating Current Range
Vin = 16V, 28V, 50V
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
See Note 5
65
80
+Vout @ (+Iout = –Iout = 0A) – +Vout @ (+Iout = –Iout = 5A)
12.00
325
20
12.24
600
80
–Vout @ (+Iout = –Iout = 2A) – –Vout @ (+Iout = 8A, –Iout = 2A)
Bandwidth = 100 kHz - 10 MHz; C =11µF on both outputs
L
0
0
0
10.5
10.5
10
8
120
12.5
13.2
(+Iout) + (–Iout)
Single Output Operating Current Range
Operating Output Power Range
Output DC Current-Limit Inception 4
Short Circuit Output Current
Maximum +Iout or –Iout
Total on both outputs
+Iout + –Iout; +Iout = –Iout
11.5
12.1
3.1
+Vout ≤ 1.2V
Back-Drive Current Limit while Enabled
Back-Drive Current Limit while Disabled
Maximum Output Capacitance 5
DYNAMIC CHARACTERISTICS
Output Voltage Deviation Load Transient 6
For a Positive Step Change in Load Current
For a Negative Step Change in Load Current
Settling Time (either case) 7
10
50
3000
Total on both outputs
-750
-400
400
50
mV
mV
µs
Total Iout Step = 5A ↔ 10A, 1A ↔ 5A; C =11µF on both outputs
4, 5, 6
4, 5, 6
4, 5, 6
L
750
200
“
Output Voltage Deviation Line Transient 8
For a Positive Step Change in Line Voltage
For a Negative Step Change in Line Voltage
Settling Time (either case) 7
-500
-500
500
500
500
mV
mV
µs
Vin step = 16V ↔ 50V; C =11µF on both outputs
4, 5, 6
4, 5, 6
See Note 5
L
“
250
Turn-On Transient
Output Voltage Rise Time
6
0
5.5
3.0
1.5
10
2
8.0
6.0
3.0
ms
%
ms
ms
ms
+Vout = 1.2V → 10.8V
4, 5, 6
See Note 5
4, 5, 6
Output Voltage Overshoot
Turn-On Delay, Rising Vin 9
ENA1, ENA2 = 5V
ENA2 = 5V
ENA1 = 5V
Turn-On Delay, Rising ENA1
4, 5, 6
Turn-On Delay, Rising ENA2
4, 5, 6
Product # MQFL-28-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2MQ120D Rev. A
10/23/07
Page 3
MQFL-28-12D
Output:
Current:
±12 V
10 A Total
Technical Specification
MQFL-28-12D ELECTRICAL CHARACTERISTICS (Continued)
Parameter
Min. Nom. Max. Units Notes & Conditions
Vin=28V DC 5%, +Iout = –Iout = 5A, CL = 0
Group A
F, free running Subgroup14
10
µ
unless otherwise specified
EFFICIENCY
Iout = 10A (16Vin)
85
88
85
87
84
86
90
92
89
91
89
90
22
24
%
%
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
Iout = 5A (16Vin)
Iout = 10A (28Vin)
%
Iout = 5A (28Vin)
%
Iout = 10A (40Vin)
%
Iout = 5A (40Vin)
%
Load Fault Power Dissipation
Short Circuit Power Dissipation
ISOLATION CHARACTERISTICS
Isolation Voltage (dielectric strength)
Input RTN to Output RTN
Any Input Pin to Case
32
33
W
W
Iout at current limit inception point 4
+Vout ≤ +1.2V; –Vout ≥ –1.2V
500
500
500
100
100
V
V
V
1
1
1
1
1
1
Any Output Pin to Case
Isolation Resistance (input rtn to output rtn)
Isolation Resistance (any pin to case)
Isolation Capacitance (input rtn to output rtn)
FEATURE CHARACTERISTICS
Switching Frequency (free running)
Synchronization Input
M
Ω
MΩ
44
nF
500
550
600
kHz
1, 2, 3
Frequency Range
500
2
-0.5
20
700
10
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
20
25
mA
%
VSYNC OUT = 0.8V
Output connected to SYNC IN of another MQFL converter
See Note 5
See Note 5
Duty Cycle
75
Enable Control (ENA1 and ENA2)
Off-State Voltage
0.8
V
µA
V
µA
V
V
1, 2, 3
See Note 5
1, 2, 3
Module Off Pulldown Current
On-State Voltage
Module On Pin Leakage Current
Pull-Up Voltage
80
2
Current drain required to ensure module is off
20
4.5
0.5
Maximum current draw from pin allowed with module still on See Note 5
3.2
-1.5
4.0
See Figure A
(+Vout) 12V; See Figure E
1, 2, 3
See Note 5
Output Voltage Trim Range
RELIABILITY CHARACTERISTICS
Calculated MTBF (MIL-STD-217F2)
–
3
GB @ Tcase=70
º
C
2800
420
TBD
10 Hrs.
3
AIF @ Tcase=70
º
C
10 Hrs.
3
Demonstrated MTBF
10 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 = 135º C.
3. High or low state of input voltage must persist for about 200 s to be acted on by the lockout or shutdown circuitry.
µ
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
7. Settling time measured from start of transient to the point where the output voltage has returned to 1% of its final value.
8. Line voltage transition time ≥ 100 s.
9. Input voltage rise time ≤ 250 s.
µs.
µ
µ
10. Operating the converter at a synchronization frequency above the free running frequency will cause the converter’s efficiency to be
slightly reduced and it may also cause a slight reduction in the maximum output current/power available. For more information consult
the factory.
11. The regulation stage operates to control the positive output. The negative output displays cross regulation.
12. All +Vout and -Vout voltage measurements are made with Kelvin probes on the output leads.
13. SHARE pin outputs a power failure warning pulse during a fault condition. See Current Share section on page 12.
14. Only the ES and HB grade products are tested at three temperatures. The B and C grade products are tested at one temperature.
Please refer to the ESS table on Page 15 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. The B- grade product has a maximum case temperature of 85º C and
a maximum junction temperature rise of 20º C at full load.
Product # MQFL-28-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2MQ120D Rev. A
10/23/07
Page 4
MQFL-28-12D
Output:
Current:
±12 V
10 A Total
Technical Specification
100
95
90
85
80
75
70
65
60
16
14
12
10
8
6
4
16 Vin
28 Vin
40 Vin
16 Vin
28 Vin
40 Vin
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 0 load to full load with 50%
Figure 2: Power dissipation vs. output power, from 0 load to full load
load on the +12V output and 50% load on the -12V output at minimum,
with 50% load on the +12V output and 50% load on the -12V output at
nominal, and maximum input voltage at 25
°C.
minimum, nominal, and maximum input voltage at 25°C.
100
95
90
85
80
75
70
65
60
16
14
12
10
8
6
4
16 Vin
28 Vin
40 Vin
16 Vin
28 Vin
40 Vin
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
2/6
1/7
0/8
Load Current (A), +Iout / -Iout
Load Current (A), +Iout / -Iout
Figure 3: Efficiency vs. output current, with total output current fixed at
Figure 4: Power dissipation vs. output current, with total output current
80% load (96W) and loads split as shown between the +12V and -12V
fixed at 80% load (96W) and loads split as shown between the +12V
outputs at minimum, nominal, and maximum input voltage at 25
°C.
and -12V outputs at minimum, nominal, and max input voltage at 25°C.
100
95
90
85
80
75
70
16
14
12
10
8
6
4
16 Vin
28 Vin
40 Vin
16 Vin
28 Vin
65
60
2
40 Vin
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 = 16V, 28V, and 40V.
load on -12V) versus case temperature for Vin =16V, 28V, and 40V.
Product # MQFL-28-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2MQ120D Rev. A
10/23/07
Page 5
MQFL-28-12D
Output:
Current:
±12 V
10 A Total
Technical Specification
12.5
-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
Input voltage has virtually no
Input voltage has virtually no
effect on cross regulation
12.4
effect on cross regulation
12.3
12.2
12.1
12.0
11.9
11.8
11.7
+Vout
+Vout
-Vout
11.6
-Vout
11.5
-11.5
0 / 8
8 / 2
6 / 4
5 / 5
+IOUT (A) / -IOUT (A)
4 / 6
2 / 8
8 / 0
6 / 2
4 / 4
2 / 6
+IOUT (A) / -IOUT (A)
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
6
14
12
10
8
168
144
120
96
5
4
3
2
1
6
72
4
48
Tj
Tj
Tj
= 105ºC
= 125ºC
max
max
2
24
max = 145ºC
28 Vin
0
0
0
0
25
45
65
85
105
125
145
135
2
4
6
8
10
12
14
Case Temperature (ºC)
Total Load Current (A)
Figure 11: Output Current / Output Power derating curve as a function
of T and the maximum desired power MOSFET junction temperature
Figure 12: Positive output voltage vs. total load current evenly split
showing typical current limit curves.
CASE
(see Note 15).
Product # MQFL-28-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2MQ120D Rev. A
10/23/07
Page 6
MQFL-28-12D
Output:
Current:
±12 V
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 volt-
age (ENA 1 and ENA 2 logic high) (5 ms/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 current
Figure 18: Output voltage response to step-change in total load current
(50%-100%-50%) of total Iout (max) split 50%/50%. Load cap: 1
cap and 10 F, 100 m ESR tantalum cap. Ch 1: +Vout (500mV/div);
Ch 2: -Iout (5A/div); Ch 3: -Vout (500mV/div); Ch 4: -Iout (5A/div).
Product # MQFL-28-12D Phone 1-888-567-9596 www.synqor.com
µ
F ceramic
(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 (500mV/div);
Ch 2: -Iout (5A/div); Ch 4: -Vout (500mV/div); Ch 4: -Iout (5A/div).
Doc.# 005-2MQ120D Rev. A 10/23/07
µF ceramic
µ
Ω
µ
Ω
Page 7
MQFL-28-12D
Output:
Current:
±12 V
10 A Total
Technical Specification
See Fig. 22
See Fig. 21
+VOUT
RTN
iC
MQME
Filter
MQFL
Converter
–VOUT
VSOURCE
1 µF
10
µF,
Ω
ceramic
100m
ESR
capacitors
capacitors
Figure 20: Test set-up diagram showing measurement points for Input
Figure 19: Output voltage response to step-change in input voltage (16V -
Terminal Ripple Current (Figure 21) and Output Voltage Ripple (Figure
22).
50V - 16V). Load cap: 10µF, 100 mΩ ESR tantalum cap and 1µF ceramic cap.
Ch 1: +Vout (500mV/div); Ch 2: -Vout (500mV/div); Ch 3: Vin (20V/div).
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-28-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2MQ120D Rev. A
10/23/07
Page 8
MQFL-28-12D
Output:
Current:
±12 V
10 A Total
Technical Specification
1
1
0.1
0.01
0.1
0.01
0.001
16Vin
28Vin
40Vin
16Vin
28Vin
40Vin
0.001
10
100
1,000
Hz
10,000
100,000
10
100
1,000
Hz
10,000
100,000
Figure 25: Magnitude of incremental output impedance (+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
16Vin
16Vin
28Vin
40Vin
-80
-90
-80
-90
28Vin
40Vin
-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.
30
20
10
0
30
20
10
0
-10
-20
-10
-20
-30
-30
16Vin
16Vin
28Vin
28Vin
-40
-40
40Vin
40Vin
-50
-50
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-28-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2MQ120D Rev. A
10/23/07
Page 9
MQFL-28-12D
Output:
Current:
±12 V
10 A Total
Technical Specification
100
10
1
16Vin
0.1
28Vin
40Vin
0.01
10
100
1,000
Hz
10,000
100,000
Figure 32: High frequency conducted emissions of standalone MQFL-28-
05S, 5Vout module at 120W output, as measured with Method CE102.
Limit line shown is the 'Basic Curve' for all applications with a 28V source.
Figure 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-28-05S, 5Vout mod-
ule at 120W output with MQFL-28-P filter, as measured with Method CE102.
Limit line shown is the 'Basic Curve' for all applications with a 28V source.
Product # MQFL-28-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2MQ120D Rev. A
10/23/07
Page 10
MQFL-28-12D
Output:
Current:
±12 V
10 A Total
Technical Specification
the converter to operate indefinitely into a short circuit and to
avoid a hiccup mode, even under a tough start-up condition.
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 transform-
ers to provide the functions of input/output isolation and voltage
transformation to achieve the output voltage required.
An input under-voltage lockout feature with hysteresis is provided,
as well as an input over-voltage shutdown. There is also an out-
put current limit that is nearly constant as the load impedance
decreases to a short circuit (i.e., there is not fold-back or fold-for-
ward characteristic to the output current under this condition).
When a load fault is removed, the output voltage rises exponen-
tially to its nominal value without an overshoot.
In the dual output converter there are two secondary windings in
the transformer of the isolation stage, one for each output. There
is only one regulation stage, however, and it is used to control
the positive output. The negative output therefore displays
“Cross-Regulation”, meaning that its output voltage depends on
how much current is drawn from each output.
The MQFL converter’s control circuit does not implement an out-
put 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.
Both the positive and the negative outputs share a common OUT-
PUT RETURN pin.
CONTROL FEATURES
Both the regulation and the isolation stages switch at a fixed fre-
quency 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 dou-
ble 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.
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.
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 con-
verters have such high efficiency, particularly at low output volt-
ages.
Regardless of which pin is used to inhibit the converter, the reg-
ulation 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 con-
verter is inhibited through the ENA2 pin. A higher input standby
current therefore results in the latter case.
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 neg-
ative load current to flow back into the converter’s output termi-
nals if the load is a source of short or long term energy. The
MQFL converters employ a “back-drive current limit” to keep this
negative output terminal current small.
5.6V
82K
1N4148
PIN 4
(or PIN 12)
ENABLE
TO ENABLE
CIRCUITRY
250K
125K
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.
2N3904
PIN 2
(or PIN 8)
IN RTN
A separate bias supply provides power to both the input and out-
put control circuits. Among other things, this bias supply permits
Figure A: Equivalent circuit looking into either the ENA1 or ENA2
pins with respect to its corresponding return pin.
Product # MQFL-28-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2MQ120D Rev. A
10/23/07
Page 11
MQFL-28-12D
Output:
Current:
±12 V
10 A Total
Technical Specification
Both enable pins are internally pulled high so that an open con-
nection on both pins will enable the converter. Figure A shows
the equivalent circuit looking into either enable pins. It is TTL
compatible.
put 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 synchroniza-
tion frequency if there is.
SYNCHRONIZATION: The MQFL converter’s switching fre-
quency can be synchronized to an external frequency source that
is in the 500 kHz to 700 kHz range. A pulse train at the desired
frequency should be applied to the SYNC IN pin (pin 6) with
respect to the INPUT RETURN (pin 2). This pulse train should
have a duty cycle in the 20% to 80% range. Its low value should
be below 0.8V to be guaranteed to be interpreted as a logic low,
and its high value should be above 2.0V to be guaranteed to be
interpreted as a logic high. The transition time between the two
states should be less than 300ns.
The SYNC OUT signal is available only when the dc input volt-
age is above approximately 12V and when the converter is not
inhibited through the ENA1 pin. An inhibit through the ENA2
pin will not turn the SYNC OUT signal off.
NOTE: An MQFL converter that has its SYNC IN pin driven by
the SYNC OUT pin of a second MQFL converter will have its start
of its switching cycle delayed approximately 180 degrees rela-
tive to that of the second converter.
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.
Figure B shows the equivalent circuit looking into the SYNC IN
pin. Figure C shows the equivalent circuit looking into the SYNC
OUT pin.
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.
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.
The MQFL converter also has a SYNC OUT pin (pin 5). This out-
5V
5K
TO SYNC
CIRCUITRY
PIN 6
SYNC IN
IN RTN
5K
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 con-
verters will deliver their appropriate fraction of the total load cur-
rent to within +/- 10% at full rated load.
PIN 2
Figure B: Equivalent circuit looking into the SYNC IN pin with
respect to the IN RTN (input return) pin.
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 dis-
able event, the SHARE pin outputs a power failure warning pulse.
The SHARE pin will go to 3V for approximately 14ms as the out-
put voltage falls.
5V
5K
SYNC OUT
FROM SYNC
CIRCUITRY
PIN 5
IN RTN
PIN 2
OPEN COLLECTOR
OUTPUT
Figure C: Equivalent circuit looking into SYNC OUT pin with
respect to the IN RTN (input return) pin.
NOTE: Converters operating from separate input filters with
reverse polarity protection (such as the MQME-28-T filter) with
Product # MQFL-28-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2MQ120D Rev. A
10/23/07
Page 12
MQFL-28-12D
Output:
Current:
±12 V
10 A Total
Technical Specification
their outputs connected in parallel may exhibit hiccup operation
at light loads. Consult factory for details.
10,000.0
1,000.0
100.0
10.0
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 connected between the TRIM pin (pin 10) and the OUT-
PUT RETURN pin (pin 8), as shown in Figure D. The value of this
resistor should be determined according to the following equa-
tion:
Trim Down Configuration
Trim Up Configuration
Vnom – 2.5
Vout – Vnom
– 2 x Vnom + 5
Rup = 10 x
(
)
1.0
-2
-1.5
-1
-0.5
0
0.5
1
Change in Vout (V)
where:
Vnom = the converter’s nominal output voltage,
Figure E: Change in Output Voltage Graph
Vout = the desired output voltage (greater than Vnom), and
Rup is in kiloOhms (kΩ).
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-
rent and temperature range. Please consult the factory for
details. Factory trimmed converters are available by request.
The maximum value of output voltage that can be achieved is
12.5V.
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:
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 200
µs. This hysteresis
and the delay ensure proper operation when the source imped-
ance is high or in a noisy enviroment.
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
Rdown is in kiloOhms (kΩ).
1
12
+VIN
ENA 2
SHARE
TRIM
open
means
on
2
11
10
IN RTN
3
CASE
+
Rup
MQFL
4
5
6
9
8
7
+
–
28Vdc
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-28-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2MQ120D Rev. A
10/23/07
Page 13
MQFL-28-12D
Output:
Current:
±12 V
10 A Total
Technical Specification
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.
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 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.
SHUT DOWN: The MQFL converter will shut down in response
to only four conditions: ENA1 input low, ENA2 input low, VIN
input below under-voltage lockout threshold, or VIN input above
over-voltage shutdown threshold. Following a shutdown event,
there is a startup inhibit delay which will prevent the converter
from restarting for approximately 300ms. After the 300ms delay
elapses, if the enable inputs are high and the input voltage is
within the operating range, the converter will restart. If the VIN
input is brought down to nearly 0V and back into the operating
range, there is no startup inhibit, and the output voltage will rise
according to the "Turn-On Delay, Rising Vin" specification.
When the converter is mounted on a metal plate, the plate will
help to make the converter’s case bottom a uniform 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 ther-
mal resistance between the thermocouple and the case due to
whatever adhesive might be used to hold the thermocouple in
place.
BACK-DRIVE CURRENT LIMIT: Converters that use MOSFETs
as synchronous rectifiers are capable of drawing a negative cur-
rent from the load if the load is a source of short- or long-term
energy. This negative current is referred to as a “back-drive cur-
rent”.
Conditions where back-drive current might occur include paral-
leled converters that do not employ current sharing, or where the
current share feature does not adequately ensure sharing during
the startup or shutdown transitions. It can also occur when con-
verters 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.
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.
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.
THERMAL CONSIDERATIONS: Figure 11 shows the suggest-
ed Power Derating Curves for this converter as a function of the
case temperature and the maximum desired power MOSFET junc-
tion 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.
Product # MQFL-28-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2MQ120D Rev. A
10/23/07
Page 14
MQFL-28-12D
Output:
Current:
±12 V
10 A Total
Technical Specification
CONSTRUCTION AND ENVIRONMENTAL STRESS SCREENING OPTIONS
B-Grade
(-40oC to +85oC)
C-Grade
(-40oC to +100oC)
ES-Grade
(-55oC to +125oC)
(Element Evaluation)
HB-Grade
(-55oC to +125oC)
(Element Evaluation)
Consistent with
MIL-STD-883F
Screening
Yes
No
Yes
No
Yes
Yes
Internal Visual
*
Condition B
(-55oC to +125oC)
Condition C
(-65oC to +150oC)
Method 1010
Temperature Cycle
Method 2001
(Y1 Direction)
Condition A
(5000g)
Constant
Acceleration
No
No
500g
Method 1015
Load Cycled
•10s period
12 Hrs @ +100oC
24 Hrs @ +125oC
96 Hrs @ +125oC
160 Hrs @ +125oC
Burn-in
•2s @ 100% Load
•8s @ 0% Load
Method 5005
(Group A)
+25oC
+25oC
-45, +25, +100oC
Full QorSeal
-55, +25, +125oC
Full QorSeal
Final Electrical Test
Mechanical Seal,
Thermal, and
Anodized Package
Full QorSeal
Coating Process
2009
Yes
Yes
External Visual
*
*
Construction
Process
Ruggedized
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 coat-
ing of the circuit, a high performance thermal compound filler, and a nickel barrier gold plated aluminum case. The B-grade version
uses a ruggedized assembly process that includes a medium performance thermal compound filler and a black anodized 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.
† Note: Since the surface of the black anodized case is not guaranteed to be electrically conductive, a star washer or similar device
should be used to cut through the surface oxide if electrical connection to the case is desired.
Product # MQFL-28-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2MQ120D Rev. A
10/23/07
Page 15
MQFL-28-12D
Output:
Current:
±12 V
10 A Total
Technical Specification
MQFL-28-12D-X-HB
DC/DC CONVERTER
28Vin ±12Vout @ 10A
PACKAGE PINOUTS
Pin #
1
2
Function
POSITIVE INPUT
INPUT RETURN
CASE
3
4
5
6
7
8
9
10
11
12
ENABLE 1
MQFL-28-12D-Y-HB
DC/DC CONVERTER
SYNC OUTPUT
SYNC INPUT
POSITIVE OUTPUT
OUTPUT RETURN
NEGATIVE OUTPUT
TRIM
28Vin ±12Vout @ 10A
SHARE
ENABLE 2
NOTES
1) Case: Aluminum with gold over nick-
el plate finish for the C-, ES-, and HB-
Grade products.
Aluminum with black anodized finish
for the B-Grade products.
2) Pins: Diameter: 0.040” (1.02mm)
Material: Copper
Finish: Gold over Nickel plate
3) All dimensions as inches (mm)
4) Tolerances: a) x.xx +0.02”
(x.x +0.5mm)
b) x.xxx +0.010”
(x.xx +0.25mm)
5) Weight: 2.8 oz. (79 g) typical
6) Workmanship: Meets or exceeds IPC-
A-610C Class III
Product # MQFL-28-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2MQ120D Rev. A
10/23/07
Page 16
MQFL-28-12D
Output:
Current:
±12 V
10 A Total
Technical Specification
MilQor MQFL 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 Converters
1.5V 1.8V 2.5V 3.3V 5V 6V 7.5V 9V 12V 15V 28V
(1R5S) (1R8S) (2R5S) (3R3S) (05S) (06S) (7R5S) (09S) (12S) (15S)
(28S)
MQFL-28
16-40Vin Cont.
16-50Vin 1s Trans.
40A 40A 40A 30A 24A 20A 16A 13A 10A 8A
4A
*
Absolute Max Vin = 60V
MQFL-28E
16-70Vin Cont.
40A 40A 40A 30A 24A 20A 16A 13A 10A 8A
4A
*
16-80Vin 1s Trans.
Absolute Max Vin =100V
MQFL-28V
16-40Vin Cont.
40A 40A 40A 30A 20A 17A 13A 11A 8A 6.5 3.3A
40A 40A 40A 30A 20A 17A 13A 11A 8A 6.5 3.3A
*
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.
40A 40A 40A 30A 24A 20A 16A 13A 10A 8A
4A
*
155-475Vin 0.1s Trans.
Absolute Max Vin = 550V
MQFL-270E
130-475Vin Cont.
40A 40A 40A 30A 20A 17A 13A 11A 8A 6.5 3.3A
40A 40A 30A 22A 15A 12A 10A 8A 6A 5A 2.7A
*
130-520Vin 0.1s Trans.
Absolute Max Vin = 600V
MQFL-270L
65-350Vin Cont.
*
65-475Vin 0.1s Trans.
Absolute Max Vin = 550V
Dual Output Converters†
Triple Output Converters
±5V ±12V ±15V
3.3V/±12V 3.3V/±15V 5V/±12V 5V/±15V 30V/±15V
(05D)
(12D)
(15D)
(3R312T)
(3R315T)
(0512T)
(0515T)
(3015T)
MQFL-28
16-40Vin Cont.
16-50Vin 1s Trans.
MQFL-28
16-40Vin Cont.
16-50Vin 1s Trans.
24A
10A
8A
22A/
±1A
22A/
±0.8A
15A/
±1A
15A/
±0.8A
2.5A/
±0.8A
*
*
Total Total Total
Absolute Max Vin = 60V
Absolute Max Vin = 60V
MQFL-28E
MQFL-28E
24A
10A
8A
22A/
±1A
22A/
±0.8A
15A/
±1A
15A/
±0.8A
2.5A/
±0.8A
16-70Vin Cont.
16-70Vin Cont.
*
*
16-80Vin 1s Trans.
Absolute Max Vin =100V
Total Total Total
16-80Vin 1s Trans.
Absolute Max Vin =100V
MQFL-28V
MQFL-28V
20A
8A
6.5A
22A/
±1A
22A/
±0.8A
15A/
±1A
15A/
±0.8A
2.5A/
±0.8A
16-40Vin Cont.
16-40Vin Cont.
*
*
5.5-50Vin 1s Trans.
Absolute Max Vin = 60V
Total Total Total
5.5-50Vin 1s Trans.
Absolute Max Vin = 60V
MQFL-28VE
MQFL-28VE
20A
8A
6.5A
22A/
22A/
15A/
15A/
2.5A/
16-70Vin Cont.
16-70Vin Cont.
*
*
5.5-80Vin 1s Trans.
Total Total Total
5.5-80Vin 1s Trans.
±1A
±0.8A
±1A
±0.8A
±0.8A
Absolute Max Vin = 100V
Absolute Max Vin = 100V
MQFL-270
MQFL-270
24A
10A
8A
22A/
±1A
22A/
±0.8A
15A/
±1A
15A/
±0.8A
2.5A/
±0.8A
155-400Vin Cont.
155-400Vin Cont.
*
*
155-475Vin 0.1s Trans.
155-475Vin 0.1s Trans.
Total Total Total
Absolute Max Vin = 550V
Absolute Max Vin = 550V
MQFL-270E
MQFL-270E
20A
8A
6.5A
22A/
22A/
15A/
15A/
2.5A/
130-475Vin Cont.
130-475Vin Cont.
*
*
130-520Vin 0.1s Trans.
Total Total Total
130-520Vin 0.1s Trans.
±1A
±0.8A
±1A
±0.8A
±0.8A
Absolute Max Vin = 600V
Absolute Max Vin = 600V
22A/
±1A
22A/
±0.8A
15A/
±1A
15A/
±0.8A
2.5A/
±0.8A
MQFL-270L
MQFL-270L
15A
6A
5A
65-350Vin Cont.
65-350Vin Cont.
*
*
65-475Vin 0.1s Trans.
Absolute Max Vin = 550V
Total Total Total
65-475Vin 0.1s Trans.
Absolute Max Vin = 550V
(75Wmax Total Output Power)
*Converters may be operated continuously at the highest transient input voltage, but some
component electrical and thermal stresses would be beyond MIL-HDBK-1547A guidelines.
†80% of total output current available on
any one output.
Product # MQFL-28-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2MQ120D Rev. A
10/23/07
Page 17
MQFL-28-12D
Output:
Current:
±12 V
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.
Input
Voltage
Range
Output Voltage(s)
Model
Name
Package Outline/
Pin Configuration
Screening
Grade
Single
Dual
Triple
Output
Output
Output
1R5S
1R8S
2R5S
3R3S
05S
28
28E
28V
28VE
3R312T
3R315T
0512T
X
Y
B
C
05D
12D
15D
MQFL
06S
W
Z
ES
HB
7R5S
09S
0515T
270
3015T
270E
270L
12S
15S
28S
Example:
MQFL – 28 – 12D – Y – ES
APPLICATION NOTES
A variety of application notes and technical white papers can be downloaded in pdf format from the SynQor website.
PATENTS (additional patent applications may be filed)
SynQor holds the following patents, one or more of which might apply to this product:
5,999,417
6,594,159
6,927,987
6,222,742
6,731,520
7,050,309
6,545,890
6,894,468
7,072,190
6,577,109
6,896,526
7,085,146
Contact SynQor for further information:
Warranty
Phone:
978-849-0600
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:
power@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-28-12D
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2MQ120D Rev. A
10/23/07
Page 18
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