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MCOTS-C-270-28-FT-F-M

更新时间：2024-09-18 18:57:29
品牌：SYNQOR
描述：DC-DC Regulated Power Supply Module, 1 Output, 600W, Hybrid, FULL BRICK PACKAGE-18

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MCOTS-C-270-28-FT-F-M 概述

DC-DC Regulated Power Supply Module, 1 Output, 600W, Hybrid, FULL BRICK PACKAGE-18 电源模块

MCOTS-C-270-28-FT-F-M 规格参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Contact Manufacturer零件包装代码：MODULE
包装说明：FULL BRICK PACKAGE-18针数：18
Reach Compliance Code：compliantECCN代码：EAR99
风险等级：5.85模拟集成电路 - 其他类型：DC-DC REGULATED POWER SUPPLY MODULE
最大输入电压：425 V最小输入电压：155 V
标称输入电压：270 VJESD-30 代码：R-XXMA-P18
JESD-609代码：e3长度：119.02 mm
最大负载调整率：0.3%功能数量：1
输出次数：1端子数量：18
最大输出电压：30.8 V最小输出电压：22.4 V
标称输出电压：28 V封装主体材料：UNSPECIFIED
封装形状：RECTANGULAR封装形式：MICROELECTRONIC ASSEMBLY
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
座面最大高度：13.08 mm表面贴装：NO
技术：HYBRID端子面层：MATTE TIN OVER NICKEL
端子形式：PIN/PEG端子位置：UNSPECIFIED
处于峰值回流温度下的最长时间：NOT SPECIFIED最大总功率输出：600 W
微调/可调输出：YES宽度：80 mm
Base Number Matches：1

MCOTS-C-270-28-FT-F-M 数据手册

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MCOTS-C-270-28-FT  
Single Output  
Full-brick  
MILITARY COTS DC/DC CONVERTER  
155-425V  
155-475V  
28V  
21.4A  
92% @ 10.7A /91% @ 21.4A  
Continuous Input Transient Input  
Output  
Output  
Efficiency  
Operation: -55°C to +100°C  
The MilQor series of Mil-COTS DC-DC converters brings  
SynQor’s field proven high-efficiency synchronous  
rectification technology to the Military/Aerospace industry.  
SynQor’s ruggedized encased packaging approach ensures  
survivability in demanding environments. Compatible with  
the industry standard format, these converters operate  
at a fixed frequency, and follow conservative component  
derating guidelines. They are designed and manufactured  
to comply with a wide range of military standards.  
Mil-COTS  
A
@ 21.4  
OUT  
28V  
IN  
VERTER  
MCOTS-C-270-28-FT-N-M-F  
DC/DC CON  
270 (155-425V)  
Safety Features  
• 4250V dc, 100 MΩ input-to-output isolation  
• (see Standards and Qualifications page)  
Designed and Manufactured in the USA  
Operational Features  
Mechanical Features  
• High efficiency, 91% at full rated load current  
Operating input voltage range: 155-425 V  
• Industry standard full-brick pin-out configuration  
• Size:  
4.686” x 2.476” x .512”  
Fixed frequency switching provides predictable EMI  
119.0 x 62.9 x 13.0 mm  
• Total weight: 9.9oz (280g)  
• Flanged baseplate version available  
nput under-voltage lockout/over-voltage shutdown  
Output current limit and short circuit protection  
nput over-voltage protection  
Output over-voltage protection  
Thermal shutdown  
• Fully Isolated On/Off control  
• Remote sense for the output voltage  
• Output voltage trim range of +10%, -20%  
• Active current sharing (full feature option)  
• Clock synchronization (full feature option)  
• Start synchronization (full feature option)  
Screening/Qualification  
S9100 and ISO 9001:2008 certified facility  
ualification consistent with MIL-STD-883  
vailable with S-Grade or M-Grade screening  
re-cap inspection per IPC-610, Class III  
emperature cycling per MIL-STD-883, Method 1010,  
ondition B, 10 cycles  
urn-In at 100C baseplate temperature  
inal visual inspection per MIL-STD-2008  
ull component traceability  
Specification Compliance  
MCOTS series converters (with an MCOTS filter) are designed to meet:  
•
MIL-HDBK-704 (A-F)  
RTCA/DO-160E Section 16  
MIL-STD-1275 (B,D)  
DEF-STAN 61-5 (Part 6)/(5 or 6)  
MIL-STD-461 (C, D, E)  
RTCA/DO-160E Section 22  
•
•
•
•
•
Podut # MCOTSC-27028-T  
Phon1-888567-9596  
www.ynq
MCOTS-C-270-28-FT  
Output: 28V  
Current: 21.4A  
Technical Specification  
BLOCK DIAGRAM  
REGULATION STAGE  
ISOLATION STAGE  
CURR ENT  
SENSE  
5
16-18  
POSITIVE  
INPUT  
POSITIVE  
OUTPUT  
T1  
T1  
T2  
6
T2  
NEGATIVE  
INPUT  
13-15  
NEGATIVE  
OUTPUT  
GATE DRIVERS  
GATE CONTROL  
7
VAUX  
10  
UVLO  
OVSD  
CURR ENT  
LIMIT  
3
OPTO-ISOLATION  
TRIM  
ON/OFF+  
PRIMARY  
CONTROL  
SECONDARY  
CONTROL  
11  
4
+ SENSE  
ON/OFF-  
12  
SENSE  
1
−
SyncIn (Full Feature Option)  
8
DATA COUPLING  
2
Start Sync  
(Full Feature Option)  
SyncOut (Full Feature Option)  
9
I Share  
(Full Feature Option)  
TYPICAL CONNECTION DIAGRAM  
Vout(+)  
Vin(+)  
Electrolytic  
Capacitor  
Vsense(+)  
External  
Input  
Filter  
Rtrim-up  
or  
Vin  
Trim  
ON/OFF  
Vin(_)  
Cload  
Rtrim-down  
Iload  
Vsense(_)  
Vout(_)  
Product # MCOTS-C-270-28-FT  
Phone 1-888-567-9596  
www.synqor.com  
Doc.# 005-0005931 Rev. F  
10/16/2013  
Page 2  
MCOTS-C-270-28-FT  
Output: 28V  
Current: 21.4A  
Technical Specification  
MCOTS-C-270-28-FT ELECTRICAL CHARACTERISTICS  
Tb = 25 °C, Vin = 270dc unless otherwise noted; full operating temperature range is -55 °C to +100 °C baseplate temperature with appropriate power  
derating. Specifications subject to change without notice.  
Parameter  
Min.  
Typ.  
Max.  
Units Notes & Conditions  
ABSOLUTE MAXIMUM RATINGS  
Input Voltage  
Non-Operating  
Operating  
Operating Transient Protection  
Isolation Voltage  
-0.5  
600  
425  
475  
V
V
V
Continuous  
Continuous  
1 s transient, square wave  
Input to Output  
4250  
2300  
2300  
+100  
+135  
18  
V dc  
V dc  
V dc  
°C  
°C  
V
Input to Base-Plate  
Output to Base-Plate  
Operating Temperature  
Storage Temperature  
Voltage at ON/OFF input pin  
-55  
-65  
-2  
Baseplate temperature  
475V transient for 1 s  
INPUT CHARACTERISTICS  
Operating Input Voltage Range  
Input Under-Voltage Turn-On Threshold  
Input Under-Voltage Turn-Off Threshold  
Input Over-Voltage Turn-Off Threshold  
Input Over-Voltage Turn-On Threshold  
Recommended External Input Capacitance  
155  
146  
135  
496  
446  
270  
150  
140  
500  
453  
7
425  
154  
145  
503  
460  
V
V
V
V
V
µF  
typical ESR 1Ω see Note 2  
Input Filter Component Values (L\C)  
Maximum Input Current  
No-Load Input Current  
.272/5.5/1.2  
µF\µH\µF Internal values; see Figure E  
5.6  
70  
20  
A
mA  
mA  
V
Vin min; trim up; in current limit  
35  
10  
1
Disabled Input Current  
Response to Input Transient  
Input Terminal Ripple Current  
Recommended Input Fuse  
OUTPUT CHARACTERISTICS  
Output Voltage Set Point  
See Figure 12  
450  
mA  
A
RMS , Full load  
Fast acting external fuse recommended  
10  
27.72  
28.00  
28.28  
V
Output Voltage Regulation  
Over Line  
Over Load  
±0.1  
±0.1  
±0.3  
±0.3  
220  
%
%
mV  
V
Over Temperature  
-220  
27.3  
Total Output Voltage Range  
Output Voltage Ripple and Noise  
Peak-to-Peak  
28.7  
Over sample, line, load, temperature & life  
20 MHz bandwidth; see Note 1  
Full load  
220  
157  
440  
320  
21.4  
21.4  
28.8  
mV  
mV  
A
A
A
RMS  
Full load  
Operating Output Current Range  
Operating Output Current Range (Start Up)  
Output DC Current-Limit Inception  
Output DC Current-Limit Shutdown Voltage  
Back-Drive Current Limit while Enabled  
Back-Drive Current Limit while Disabled  
Maximum Output Capacitance  
Output Voltage during Load Current Transient  
Step Change in Output Current (0.1 A/µs)  
Settling Time  
0
0.22  
22.6  
Subject to thermal derating  
See Application Notes  
Output voltage 10% Low  
25.7  
14  
400  
4
V
mA  
mA  
µF  
Negative current drawn from output  
Negative current drawn from output  
Vout nominal at full load (resistive load)  
3,000  
500  
900  
mV  
µs  
50% to 75% to 50% Iout max  
To within 1% Vout nom  
Output Voltage Trim Range  
-20  
10  
%
Across Pins 13&18; Figure C; see Note 3  
Output Voltage Remote Sense Range  
Output Over-Voltage Protection  
Auxiliary power  
10  
38.5  
10  
%
V
V
Across Pins 13&18  
Over full temp range  
Maximum current of 50mA, Referenced to Vout(–)  
31.5  
7
35  
8
Note 1: Output is terminated with 1 µF ceramic and 15 µF low-ESR tantalum capacitors. For applications requiring reduced output voltage ripple and  
noise, consult SynQor applications support (e-mail: mqnbofae@synqor.com)  
Note 2: An input capacitor with series resistance is necessary to provide system stability.  
Note 3: Trim-up range is limited below 10% at low line and full load.Applying more than 6.2V between trim pin and Vout(-) may damage the unit.  
Product # MCOTS-C-270-28-FT  
Phone 1-888-567-9596  
www.synqor.com  
Doc.# 005-0005931 Rev. F  
10/16/2013  
Page 3  
MCOTS-C-270-28-FT  
Output: 28V  
Current: 21.4A  
Technical Specification  
MCOTS-C-270-28-FT ELECTRICAL CHARACTERISTICS  
Tb = 25 °C, Vin = 270dc unless otherwise noted; full operating temperature range is -55 °C to +100 °C baseplate temperature with appropriate power  
derating. Specifications subject to change without notice.  
Parameter  
Min.  
Typ.  
Max.  
Units Notes & Conditions  
DYNAMIC CHARACTERISTICS  
Turn-On Transient  
Turn-On Time  
Start-Up Inhibit Time  
Output Voltage Overshoot  
ISOLATION CHARACTERISTICS  
Isolation Voltage (dielectric strength)  
Isolation Resistance  
90  
400  
0
ms  
ms  
%
Full load, Vout=90% nom.  
See Figure F  
Maximum Output Capacitance  
360  
440  
4250  
V dc  
MΩ  
pF  
See Absolute Maximum Ratings  
See Note 5  
100  
N/A  
Isolation Capacitance (input to output)  
TEMPERATURE LIMITS FOR POWER DERATING CURVES  
Semiconductor Junction Temperature  
Board Temperature  
Transformer Temperature  
Maximum Baseplate Temperature, Tb  
FEATURE CHARACTERISTICS  
125  
125  
125  
100  
°C  
°C  
°C  
°C  
Package rated to 150 °C  
UL rated max operating temp 130 °C  
Switching Frequency  
ON/OFF Control  
Off-State Voltage  
On-State Voltage  
350  
375  
400  
kHz  
V
2.4  
-1  
18  
0.8  
ON/OFF Control  
Input Resistance  
Over-Temperature Shutdown OTP Trip Point  
Over-Temperature Shutdown Restart Hysteresis  
EFFICIENCY  
Application notes Figures A & B  
Average PCB Temperature  
3
125  
10  
kΩ  
°C  
°C  
100% Load  
50% Load  
91  
92  
%
%
FULL FEATURE OPTION  
Clock Sync  
Current Share  
350  
375  
2.2  
400  
kHz  
V
See Note 6  
Full load  
RELIABILITY CHARACTERISTICS  
Calculated MTBF per MIL-HDBK-217F  
Calculated MTBF per MIL-HDBK-217F  
6
1.2  
0.120  
10 Hrs. Ground Benign, 70°C Tb  
6
10 Hrs. Ground Mobile, 70°C Tb  
Note 5: Input to output isolation capacitance external to the module is recommended.  
Note 6: Do not apply a clock signal lower than specified frequency.  
STANDARDS COMPLIANCE  
Parameter  
Notes & Conditions  
STANDARDS COMPLIANCE  
UL 60950-1/R2011-12  
CAN/CSA C22.2 No. 60950-1/A1:2011  
EN 60950-1/A12:2011  
CE Marked  
Reinforced Insulation  
2006/95/EC Low Voltage Directive  
IEC 61000-4-2  
ESD test, 8 kV - NP, 15 kV air - NP (Normal Performance)  
Note: An external input fuse must always be used to meet these safety requirements. Contact SynQor for official safety certificates on new  
releases or download from the SynQor website.  
Product # MCOTS-C-270-28-FT  
Phone 1-888-567-9596  
www.synqor.com  
Doc.# 005-0005931 Rev. F  
10/16/2013  
Page 4  
MCOTS-C-270-28-FT  
Output: 28V  
Current: 21.4A  
Technical Specification  
94  
92  
90  
88  
86  
84  
82  
80  
94  
92  
90  
88  
86  
84  
82  
80  
155 Vin  
270 Vin  
425 Vin  
425 Vin  
270 Vin  
155 Vin  
-55ºC  
25ºC  
100ºC  
0
5
10  
15  
20  
Case Temperature (ºC)  
Load Current (A)  
Figure 1: Efficiency at nominal output voltage vs. load current for  
Figure 2: Efficiency at nominal output voltage and 60% rated power vs.  
minimum, nominal, and maximum input voltage at 25  
°C.  
case temperature for minimum, nominal, and maximum input voltage.  
50  
40  
30  
20  
60  
50  
40  
30  
20  
10  
0
155 Vin  
10  
425 Vin  
270 Vin  
155 Vin  
270 Vin  
425 Vin  
0
-55ºC  
25ºC  
100ºC  
0
5
10  
15  
20  
Case Temperature (ºC)  
Load Current (A)  
Figure 3: Power dissipation at nominal output voltage vs. load current for  
Figure 4: Power dissipation at nominal output voltage and 60% rated  
minimum, nominal, and maximum input voltage at T =25  
°C.  
power vs. case temperature for minimum, nominal, and maximum input  
voltage.  
CASE  
25  
20  
15  
10  
5
30.0  
25.0  
20.0  
15.0  
10.0  
155 Vin  
270Vin  
5.0  
425 Vin  
0
0.0  
50  
60  
70  
80  
90  
100  
110  
120  
0
5
10  
15  
20  
25  
30  
Base Plate Temperature (°C)  
Load Current (A)  
Figure 6: Output voltage vs. load current showing typical current limit  
curves. See Current Limit section in the Application Notes.  
Figure 5: Maximum output current vs. base plate temperature (nominal input  
voltage).  
Product # MCOTS-C-270-28-FT  
Phone 1-888-567-9596  
www.synqor.com  
Doc.# 005-0005931 Rev. F  
10/16/2013  
Page 5  
MCOTS-C-270-28-FT  
Output: 28V  
Current: 21.4A  
Technical Specification  
Figure 7: Start waveform with 1% load. Input voltage pre-applied, ON/OFF Pin  
on Ch 1.  
Figure 8: Turn-on transient at full resistive load and zero output capacitance  
initiated by Vin. ON/OFF Pin previously low. Ch 1: Vin (100V/div). Ch 2: Vout  
(10V/div).  
Figure 9: Input terminal current ripple, iC, at full rated output current and  
nominal input voltage (500 mA/div). Bandwidth: 25MHz. See Figure 17.  
Figure 10: Output voltage ripple, Vout, at nominal input voltage and rated load  
current (200 mV/div). Load capacitance: 1µF ceramic capacitor and 10µF  
tantalum capacitor. Bandwidth: 25 MHz. See Figure 17.  
Figure 11: Output voltage response to step-change in load current (50%-75%-  
50% of Iout(max); dI/dt = 0.1 A/µs). Load cap: 1 µF ceramic and 15 µF tantalum  
capacitors. Ch 3: Vout (500mV/div), Ch 2: Iout (10A/div).  
Figure 12: Output voltage response to step-change in input voltage (1000V/ms).  
Load cap: 100 µF electrolytic output capacitance. Ch 1: Vin (200V/div), Ch 2:  
Vout (1V/div).  
Product # MCOTS-C-270-28-FT  
Phone 1-888-567-9596  
www.synqor.com  
Doc.# 005-0005931 Rev. F  
10/16/2013  
Page 6  
MCOTS-C-270-28-FT  
Output: 28V  
Current: 21.4A  
Technical Specification  
0
-10  
-20  
-30  
-40  
-50  
-60  
-70  
-80  
-90  
-100  
1
0.1  
0.01  
270Vin  
270Vin  
425Vin  
155Vin  
425Vin  
155Vin  
0.001  
10  
100  
1,000  
Hz  
10,000  
100,000  
10  
100  
1,000  
Hz  
10,000  
100,000  
Figure 13: Magnitude of incremental output impedance (Zout = vout/iout) for  
Figure 14: Magnitude of incremental forward transmission (FT = vout/vin)  
minimum, nominal, and maximum input voltage at full rated power.  
for minimum, nominal, and maximum input voltage at full rated power.  
1000  
100  
-5  
-15  
-25  
-35  
10  
270Vin  
425Vin  
155Vin  
270Vin  
-45  
425Vin  
155Vin  
1
-55  
10  
100  
1,000  
Hz  
10,000  
100,000  
10  
100  
1,000  
Hz  
10,000  
100,000  
Figure 16: Magnitude of incremental input impedance (Zin = vin/iin) for  
Figure 15: Magnitude of incremental reverse transmission (RT = iin/iout) for  
minimum, nominal, and maximum input voltage at full rated power.  
minimum, nominal, and maximum input voltage at full rated power.  
1 µF  
ceramic capacitor  
4.5 µH  
source impedance  
i
C
DC/DC  
Converter  
VOUT  
VSOURCE  
10 µF,  
100mΩ ESR  
tantalum capacitor  
7 µF,ceramic capacitor  
in sereis with 1Ω Resistor  
Figure 17: Test set-up diagram showing measurement points for Input Terminal  
Figure 18: Load current (10A/div) as a function of time (5ms/div and 100ms/div)  
Ripple Current (Figure 9) and Output Voltage Ripple (Figure 10).  
when the converter attempts to turn on into a 10 mΩ short circuit.  
Product # MCOTS-C-270-28-FT  
Phone 1-888-567-9596  
www.synqor.com  
Doc.# 005-0005931 Rev. F  
10/16/2013  
Page 7  
MCOTS-C-270-28-FT  
Output: 28V  
Current: 21.4A  
Technical Specification  
CONTROL FEATURES  
BASIC OPERATION AND FEATURES  
ON/OFF(+) and ON/OFF(-) (Pin 3 and 4) - Remote  
ON/OFF: The ON/OFF inputs, Pins 3 and 4, permit the  
user to turn the converter on or off. These two inputs are  
fully isolated from both the input and the output side of the  
power converter, allowing the user the option to manage  
the converter from the input or the output end. The user’s  
on/off control signal is applied between the ON/OFF(+)  
pin and the ON/OFF(-) pins. Figure A details two possible  
circuits for driving the ON/OFF pin. Figure B is a detailed  
look of the internal ON/OFF circuitry.  
REMOTE SENSE(+) and SENSE(-) (Pins 11 and 12):  
The SENSE inputs correct for voltage drops along the  
conductors that connect the converter’s output pins to the  
load.Pin 11 should be connected to Vout(+) and Pin 12  
should be connected to Vout(-) at the point on the board  
This Mil-COTS converter series uses a two-stage power  
conversion topology. The first stage is a buck-converter  
that keeps the output voltage constant over variations  
in line, load, and temperature. The second stage uses  
a transformer to provide the functions of input/output  
isolation and voltage step-up or step-down to achieve the  
output voltage required.  
Both the first stage and the second stage switch at a fixed  
frequency for predictable EMI performance.The switching  
frequency of second stage is half of the swithcing frequency  
of first stage and locked in phase. Rectification of the  
transformer’s output is accomplished with synchronous  
rectifiers. These devices, which are MOSFETs with a very low  
on-state resistance, dissipate far less energy than Schottky  
diodes. This is the primary reason that the converter has  
such high efficiency, even at very low output voltages and  
very high output currents.  
where regulation is desired. A remote connection at the  
load can adjust for a voltage drop only as large as that  
specified in this datasheet, that is  
These converters are offered totally encased to withstand  
harsh environments and thermally demanding applications.  
Dissipation throughout the converter is so low that it does  
not require a heatsink for operation in many applications;  
however, adding a heatsink provides improved therma
derating performance in extreme situations.  
[Vout(+) - Vout(-)] – [Vsense(+) - Vsense(-)] ≤  
Sense Range % x Vout  
Pins 11 and 12 must be connected for proper regulation  
of the output voltage. If these connections are not made,  
the converter will deliver an output voltage that is slightly  
higher than its set value.  
This series of converters uses the industry standard footprint  
and pin-out configuration.  
The voltage at the output terminals of the module will be  
trimmed up by the control circuit to compensate for voltage  
drops between the output pins of the module and the  
remote sense point. Note that the over-voltage protection  
(OVP) circuit senses the voltage at the output pins of the  
module. It is possible to inadvertently trip the OVP protection  
circuit if the voltage drop between the output pins and the  
sense point becomes too large. Hence, the remote sensing  
feature should be used only to compensate for small values  
of voltage drops to avoid triggering OVP due to a line or  
load transient.  
On when switch is open  
VIN (+)  
V
OUT (+)  
Opto  
U1  
(+)  
SENSE  
SENSE  
+ON/OFF  
-ON/OFF  
5V  
(-)  
3.01k  
R1  
V
OUT (-)  
VIN(-)  
Pin 3  
Pin 4  
D1  
C1  
On when switch is closed  
100p  
VIN (+)  
VOUT (+)  
(+)  
SENSE  
SENSE  
+ON/OFF  
-ON/OFF  
5V  
Figure B: Internal ON/OFF pin circuitry  
(-)  
V
OUT (-)  
VIN(-)  
Figure A: Example of two configurations for the enable signal  
Product # MCOTS-C-270-28-FT Phone 1-888-567-9596  
www.synqor.com  
Doc.# 005-0005931 Rev. F  
10/16/2013  
Page 8  
MCOTS-C-270-28-FT  
Output: 28V  
Current: 21.4A  
Technical Specification  
OUTPUT VOLTAGE TRIM (Pin 10): The TRIM input  
permits the user to adjust the output voltage across  
the sense leads up or down according to the trim range  
specifications.  
100,000  
10,000  
1,000  
100  
To decrease the output voltage, the user should connect a  
resistor between Pin 10 (TRIM) and Pin 12 [SENSE(-)]. For  
a desired decrease of the nominal output voltage, the value  
of the resistor should be:  
90.9  
10  
- 0.909 (kΩ)  
Rtrim-down = ( )  
Δ%  
where  
1
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20  
% Decrease in Vout  
% Increase in Vout  
Vnominal – Vdesired  
Δ% =  
|
|
x 100%  
Figure C: Trim graph for trim-up, trim down.  
Vnominal  
It is not necessary for the user to add capacitance at the  
Trim pin. The node is internally bypassed to eliminate noise.  
To increase the output voltage, the user should connect a  
resistor between Pin 10 (TRIM) and Pin 11 [SENSE(+)]. For  
a desired increase of the nominal output voltage, the value  
of the resistor should be:  
Total DC Variation of VOUT:Fortheconvertertomeetits  
full specifications, the maximum variation of the dc value of  
VOUT, due to both trimming and remote load voltage drops,  
should not be greater than that specified for the output  
voltage trim range.Note if the unit is started at no load the  
output voltage may, under some conditions, regulate above  
its rated value. This condition will be corrected once the  
load is increased above 1%, and it will stay corrected even  
if the load is lowered to zero.  
1.0VOUT x (100+Δ%)  
90.9  
Δ%  
Rtrim-up =  
-
- 0.909  
(kΩ)  
(
)
1.225Δ%  
where  
Vout = Nominal Output Voltage  
The trim graphs show the relationship between the trim  
resistor value and the percentage decrease or increase of  
the output voltage relative to thenominal output voltage  
set point. The graphs also show the total range the output  
voltage can be trimmed up or down.  
Note: the TRIM feature does not affect the voltage at  
which the output over-voltage protection circuit is triggered.  
Trimming the output voltage too high may cause the over-  
voltage protection circuit to engage, particularly during  
transients.  
m  
Doc.# 005-0005931 Rev. F  
10/16/2013  
Page 9  
MCOTS-C-270-28-FT  
Output: 28V  
Current: 21.4A  
Technical Specification  
Protection Features  
Over-Temperature Shutdown: A temperature sensor  
on the converter senses the average temperature of the  
module. The thermal shutdown circuit is designed to turn  
the converter off when the temperature at the sensed  
location reaches the Over-Temperature Shutdown value.  
It will allow the converter to turn on again when the  
temperature of the sensed location falls by the amount of  
the Over-Temperature Shutdown Restart Hysteresis value.  
Input Under-Voltage Lockout: The converter is designed  
to turn off when the input voltage is too low, helping avoid  
an input system instability problem, described in more detail  
in the application note titled “Input System Instability”  
available on www.SynQor.com . The lockout circuitry is a  
comparator with DC hysteresis. When the input voltage is  
rising, it must exceed the typical Turn-On Voltage Threshold  
value (listed on the specification page) before the converter  
will turn on. Once the converter is on, the input voltage  
must fall below the typical Turn-Off Voltage Threshold value  
before the converter will turn off.  
Output Current Limit: The output current remains  
constant as the output voltage drops. However, once the  
impedance of the load across the output is small enough to  
make the output voltage drop below the specified Output  
DC Current-Limit Shutdown Voltage, the converter turns off.  
Output Over-Voltage Limit: If the voltage across the  
output pins exceeds the Output Over-Voltage Protection  
threshold, the converter will immediately stop switching.  
This prevents damage to the load circuit due to 1) excessive  
series resistance in output current path from converter  
output pins to sense point, 2) a release of a short-circuit  
condition, or 3) a release of a current limit condition. Load  
capacitance determines exactly how high the output voltage  
will rise in response to these conditions. After 400 ms the  
converter will automatically restart.  
The converter then enters a “auto-restart” mode where it  
repeatedly turns on and off at a 2.5 Hz (nominal) frequency  
until the overload condition is removed. This prevents  
excessive heating of the converter or the load board.  
Product # MCOTS-C-270-28-FT  
Phone 1-888-567-9596  
www.synqor.com  
Doc.# 005-0005931 Rev. F  
10/16/2013  
Page 10  
MCOTS-C-270-28-FT  
Output: 28V  
Current: 21.4A  
Technical Specification  
APPLICATION CONSIDERATIONS  
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.  
Application Circuits: Figure D provides a typical circuit diagram which details the input filtering and voltage trimming.  
Electrolytic  
Capacitor  
Vout(+)  
Vin(+)  
Vsense(+)  
ON/OFF (+)  
External  
Input  
Filter  
Rtrim-up  
Vin  
Trim  
or  
ON/OFF (  
Vin(_)  
-)  
Cload  
Rtrim-down  
Iload  
Vsense(_)  
Vout(_)  
Figure D: Typical application circuit (negative logic unit, permanently enabled).  
Input Filtering and External Capacitance: Figure E provides a diagram showing the internal input filter components.  
This filter dramatically reduces input terminal ripple current, which otherwise could exceed the rating of the converter's  
external electrolytic input capacitor. The recommended external input capacitance is specified in the Input Characteristics  
section on the Electrical Characteristics page. More detailed information is available in the application note titled “EMI  
Characteristics” on the SynQor website.  
L
Vin(+)  
C2  
C1  
Vin(_)  
Figure E: Internal Input Filter Diagram (Component values listed on page 3)  
Product # MCOTS-C-270-28-FT  
Phone 1-888-567-9596  
www.synqor.com  
Doc.# 005-0005931 Rev. F  
10/16/2013  
Page 11  
MCOTS-C-270-28-FT  
Output: 28V  
Current: 21.4A  
Technical Specification  
Startup Inhibit Period: The Startup Inhibit Period When the ON/OFF pin goes high after t2, the Startup Inhibit  
ensures that the converter will remain off for approximately Period has elapsed, and the output turns on within the  
400 ms when it is shut down for any reason. For example, typical Turn-On Time.  
when an output short is present the module will shutdown,  
remain off for the startup inhibit period, and then attempt  
to restart. This results in a 2.5Hz auto restart mode of  
operation which prevents the converter from overheating.  
In all, there are seven ways that the converter can be shut  
Thermal Considerations: The maximum operating base-  
plate temperature, T , is 100 ºC. Refer to the thermal  
B
derating curve figure to see the available output current at  
baseplate temperatures below 100 ºC.  
A power derating curve can be calculated for any heatsink  
that is attached to the base-plate of the converter. It is only  
necessary to determine the thermal resistance, RTH , of the  
chosen heatsink between the base-plate and theBaAmbient  
air for a given airflow rate. This information is usually  
available from the heatsink vendor. The following formula  
can then be used to determine the maximum power the  
converter can dissipate for a given thermal condition:  
down, initiating a Startup Inhibit Period:  
• Input Under-Voltage Lockout  
• Input Over-Voltage Lockout  
• Output Over-Voltage Protection  
• Over Temperature Shutdown  
• Current Limit  
• Short Circuit Protection  
• Turned off by the ON/OFF input  
Figure F shows three turn-on scenarios, where a Startup  
max  
diss  
TB - TA  
=
P
RTHBA  
Inhibit Period is initiated at t  
0
, t1  
, and t  
2
:
Before time t , when the input voltage is below the UVL  
0
This value of power dissipation can then be used in  
conjunction with the data shown in Figure 3 to determine  
the maximum load current (and power) that the converter  
can deliver in the given thermal condition.  
threshold, the unit is disabled by the Input Under-Voltage  
Lockout feature. When the input voltage rises above the  
UVL threshold, the Input Under-Voltage lockout is released,  
and a Startup Inhibit Period is initiated. At the end of this  
delay, the ON/OFF pin is evaluated, and since it is active,  
the unit turns on.  
At time t , the unit is disabled by the ON/OFF pin, and it  
1
cannot be enabled again until the Startup Inhibit Period has  
elapsed.  
Vin  
Under-Voltage  
Lockout Turn-On  
Threshold  
ON/OFF  
(Negative  
logic)  
ON  
OFF  
ON  
OFF  
ON  
90ms  
(typical turn on time)  
Vout  
140ms  
400ms  
400ms  
(typical start-up)  
(typical start-up  
inhibit period  
after shutdown)  
t0  
t1  
t2  
t
Figure F: Startup Inhibit Period (turn-on time not to scale)  
Product # MCOTS-C-270-28-FT Phone 1-888-567-9596  
www.synqor.com  
Doc.# 005-0005931 Rev. F  
10/16/2013  
Page 12  
MCOTS-C-270-28-FT  
Output: 28V  
Current: 21.4A  
Technical Specification  
Mechanical Diagram  
1.800 [ 45.72]  
1.450 [ 36.83]  
1.200 [ 30.48]  
.950 [ 24.13]  
.550 [ 13.97]  
.300 [ 7.62]  
OVERALL HEIGHT  
+.002  
-.005  
0.512  
+0.05  
-0.12  
13.00  
[
]
M3 STANDOFF  
x4  
SEE NOTE 9  
2.486 .020 [ 63.14 0.5]  
2.00 [ 50.8]  
.151 ±.010  
[ 3.97]  
.050 [ 1.27]  
SEE NOTE 5  
13 14 15  
12  
16 17 18  
11  
10  
9
8
7
3.900  
4.20  
[ 106.7]  
[ 99.06]  
3.750  
[ 95.25]  
3.600  
[ 91.44]  
3.450  
[ 87.63]  
4.200  
[ 106.68 ]  
4.686 .020  
[ 119.02 0.5]  
3.300  
[ 83.82]  
3.150  
[ 80.01]  
.243 .020  
[ 6.17 0.5]  
6
5
4
3
2
1
1
BOTTOMSIDE CLEARANCE  
+0.007  
-0.010  
.250 .020 [ 6.35 0.5]  
.493 .020 [ 12.52 0.5]  
.150 [ 3.81]  
.300 [ 7.62]  
.450 [ 11.43]  
.850 [ 21.59]  
1.250 [ 31.75]  
0.017  
+0.17  
-0.25  
0.43  
[
]
NOTES  
PIN DESIGNATIONS  
Function  
1)  
Pins 1-4, 7-12 are 0.040” (1.02mm) diameter, with 0.080” (2.03mm)  
Pin  
1
Name  
diameter standoff shoulders.  
SyncIn  
Synchronization Input (full feature only)  
2)  
Pins 5-6, 13-18 are 0.080” (2.03 mm) diameter with 0.125”  
(3.18mm) diameter standoff shoulders.  
2
SyncOut  
Synchronization Output (full feature only)  
3
ON/OFF(+) Turn converter on and off, referenced to – ON/OFF  
ON/OFF(–) Fully isolated ground  
3)  
4)  
All Pins: Material - Copper Alloy; Finish - Matte Tin over Nickel plate  
Undimensioned components are shown for visual reference only.  
Applied torque per screw should not exceed 6in-lb (0.7Nm).  
Baseplate flatness tolerance is 0.004" (.10mm) TIR for surface.  
Weight: 9.9oz (280g) typical  
4
5
Vin(+)  
Vin(–)  
Positive input voltage  
5)  
6
Negative input voltage  
6)  
7
Vaux  
Auxiliary power, referenced to Vout(–)  
Startup synchronization (full feature only)  
Single wire parallel signal (full feature only)  
Output voltage trim (see note 1)  
Positive remote sense (see note 2)  
Negative remote sense (see note 3)  
Negative output voltage  
7)  
8
Start Sync  
I Share  
TRIM  
8)  
Workmanship: Meets or exceeds IPC-A-610 Class II  
Threaded or non-threaded options available.  
9
9)  
10  
10)  
All dimensions in inches (mm)  
11 SENSE(+)  
12 SENSE(–)  
Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm)  
x.xxx +/-0.010 in. (x.xx +/-0.25mm)  
13  
14  
15  
16  
17  
18  
Vout(–)  
Vout(–)  
Vout(–)  
Vout(+)  
Vout(+)  
Vout(+)  
Negative output voltage  
Negative output voltage  
Positive output voltage  
Positive output voltage  
Positive output voltage  
Pin Designations Notes:  
1
2
3
4
Leave TRIM pin open for nominal output voltage.  
SENSE(+) should be connected to Vout(+) remotely or at converter.  
SENSE(–) should be connected to Vout(–) remotely or at converter.  
Pins 1, 2, 8, and 9 are populated on full feature versions only.  
Product # MCOTS-C-270-28-FT  
Phone 1-888-567-9596  
www.synqor.com  
Doc.# 005-0005931 Rev. F  
10/16/2013  
Page 13  
MCOTS-C-270-28-FT  
Output: 28V  
Current: 21.4A  
Technical Specification  
1.450[36,830]  
1.200[30,480]  
0.950[24,130]  
0.550[13,970]  
Flanged Mechanical Diagram  
OVERALL HEIGHT  
0.495 0.015  
[12,57 0,38 ]  
3.150 0.020 [80,010 0,508]  
2.950 0.020 [74,930 0,508]  
2.486 0.020 [63,144 0,508]  
0.300[7,620]  
0.050[1,270]  
0.168  
[4,27]  
USE 4-40 OR  
M3 SCREW (6x)  
RECOM TORQUE  
3in-lb  
13  
14  
15  
16  
17 18  
12  
11  
10  
9
.13[3.3]  
4.686 0.020  
[119,02 0,50 ]  
8
7
4.17  
[105,8]  
3.900  
[99,060]  
3.750  
[95,250]  
3.00  
[76,2]  
3.600  
[91,440]  
4.200  
[106,680]  
3.450  
[87,630]  
3.300  
[83,820]  
1.50  
[38,1]  
3.150  
[80,010]  
0.600 0.020  
[15,24 0,50 ]  
6
5
4
3
2
1
1
0.017 0.020  
[0,43 0,50 ]  
0.125  
[3,18]  
0.243 0.020  
[6,17 0,50 ]  
0.493 0.020 [12,52 0,50 ]  
0.725 0.020 [18,42 0,50 ]  
0.825 0.020 [20,96 0,50 ]  
0.150[3,810]  
0.300[7,620]  
0.450[11,430]  
0.850[21,590]  
1.250[31,750]  
NOTES  
PIN DESIGNATIONS  
Function  
1)  
Applied torque per screw should not exceed 5in-lb (0.7Nm), 3in-lb  
Pin  
1
Name  
(0.4Nm) recommended.  
SyncIn  
Synchronization Input (full feature only)  
2)  
Pins 1-4, 7-12 are 0.040” (1.02mm) diameter, with 0.080” (2.03mm)  
diameter standoff shoulders.  
2
SyncOut  
Synchronization Output (full feature only)  
3
ON/OFF(+) Turn converter on and off, referenced to – ON/OFF  
ON/OFF(–) Fully isolated ground  
3)  
4)  
5)  
6)  
7)  
8)  
9)  
Pins 5-6, 13-18 are 0.080” (2.03 mm) diameter with 0.125” (3.18mm)  
All Pins: Material - Copper Alloy; Finish - Matte Tin over Nickel plate  
Undimensioned components are shown for visual reference only.  
Baseplate flatness tolerance is 0.010" (.25mm) TIR for surface.  
Weight: 10.1oz (285g) typical  
4
5
Vin(+)  
Vin(–)  
Positive input voltage  
6
Negative input voltage  
7
Vaux  
Auxiliary power, referenced to Vout(–)  
Startup synchronization (full feature only)  
Single wire parallel signal (full feature only)  
Output voltage trim (see note 1)  
Positive remote sense (see note 2)  
Negative remote sense (see note 3)  
Negative output voltage  
8
Start Sync  
I Share  
TRIM  
Workmanship: Meets or exceeds IPC-A-610 Class II  
All dimensions in inches (mm)  
9
10  
Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm)  
11 SENSE(+)  
12 SENSE(–)  
x.xxx +/-0.010 in. (x.xx +/-0.25mm)  
13  
14  
15  
16  
17  
18  
Vout(–)  
Vout(–)  
Vout(–)  
Vout(+)  
Vout(+)  
Vout(+)  
Negative output voltage  
Negative output voltage  
Positive output voltage  
Positive output voltage  
Positive output voltage  
Pin Designations Notes:  
1
2
3
4
Leave TRIM pin open for nominal output voltage.  
SENSE(+) should be connected to Vout(+) remotely or at converter.  
SENSE(–) should be connected to Vout(–) remotely or at converter.  
Pins 1, 2, 8, and 9 are populated on full feature versions only.  
Product # MCOTS-C-270-28-FT  
Phone 1-888-567-9596  
www.synqor.com  
Doc.# 005-0005931 Rev. F  
10/16/2013  
Page 14  
MCOTS-C-270-28-FT  
Output: 28V  
Current: 21.4A  
Technical Specification  
Mil-COTS Qualification  
# Tested  
(# Failed)  
Consistent with MIL-  
STD-883F Method  
Consistent with MIL-  
STD-883F Method 5005  
Test Name  
Life Testing  
Shock-Vibration  
Humidity  
Details  
Visual, mechanical and electrical testing before, during and  
after 1000 hour burn-in @ full load  
Visual, mechanical and electrical testing before, during and  
after shock and vibration tests  
15  
(0)  
5
(0)  
8
(0)  
10  
(0)  
15  
(0)  
7
(0)  
Method 1005.8  
MIL-STD-202,  
Methods 201A & 213B  
+85˚C, 95% RH, 1000 hours, 2 minutes on / 6 hours off  
Method 1004.7  
Method 1010.8  
Method 2003  
Temperature  
Cycling  
500 cycles of -55˚C to +100˚C  
(30 minute dwell at each temperature)  
Condition A  
Solderability  
DMT  
15 pins  
-65˚C to +110˚C across full line and load specifications in  
5˚C steps  
2
(0)  
Altitude  
70,000 feet (21 km), see Note  
Note: A conductive cooling design is generally needed for high altitude applications because of naturally poor convective cooling at rare atmospheres.  
Mil-COTS DC-DC Converter and Filter Screening  
Screening  
Baseplate Operating Temperature  
Storage Temperature  
Pre-Cap Inspection  
Temperature Cycling  
Burn-In  
Process Description  
S-Grade  
-55˚C to +100˚C  
-65˚C to +135˚C  
●
M-Grade  
-55˚C to +100˚C  
-65˚C to +135˚C  
IPC-610, Class III  
Method 1010, Condition B, 10 Cycles  
100˚C Baseplate  
●
●
12 Hours  
25˚C  
●
96 Hours  
Final Electrical Test  
Final Visual Inspection  
100%  
-55˚C, +25˚C, +100˚C  
●
MIL-STD-2008  
MILCOTS MIL-STD-810G Qualification Testing  
MIL-STD-810G Test  
Fungus  
Method  
508.6  
Description  
Table 508.6-I  
500.5 - Procedure I  
500.5 - Procedure II  
500.5 - Procedure III  
513.6 - Procedure II  
509.5  
Storage: 70,000ft. / 2 Hr. duration  
Operating; 70,000ft. / 2 Hr. duration; Ambient Temperature  
Storage: 8,000ft. to 40,000ft.  
Operating - 15g's  
Altitude  
Rapid Decompression  
Acceleration  
Salt Fog  
Storage  
501.5 - Procedure I  
501.5 - Procedure II  
502.5 - Procedure I  
502.5 - Procedure II  
Storage: 135°C / 3 hrs  
High Temperature  
Low Temperature  
Operating: 100°C / 3 hrs  
Storage: -65C / 4 hrs  
Operating: -55C / 3 hrs  
Temperature Shock  
Rain  
503.5 - Procedure I - C Storage: -65C to 135C; 12 cycles  
506.5 - Procedure I  
512.5 - Procedure I  
507.5 - Procedure II  
514.6 - Procedure I  
516.6 - Procedure I  
516.6 - Procedure VI  
514.6 - Category 14  
510.5 - Procedure I  
510.5 - Procedure II  
Wind Blown Rain  
Non-Operating  
Immersion  
Humidity  
Aggravated cycle @ 95% RH (Figure 507.5-7 aggravated temp - humidity cycle, 15 cycles)  
10-2000 Hz, PSD level of 1.5 g2/Hz(54.6grms), duration = 1 hr/axis  
20g's peak, 11ms, Functional Shock (Operating no load) (saw tooth)  
Bench Handling Shock  
Rotary wing aircraft - helicopter, 4hrs/axis, 20g's (sine sweep from 10 - 500HZ)  
Blowing Dust  
Random Vibration  
Shock  
Sinusoidal vibration  
Sand and Dust  
Blowing Sand  
Product # MCOTS-C-270-28-FT  
Phone 1-888-567-9596  
www.synqor.com  
Doc.# 005-0005931 Rev. F  
10/16/2013  
Page 15  
MCOTS-C-270-28-FT  
Output: 28V  
Current: 21.4A  
Technical Specification  
Ordering Information/ Part Numbering  
Example MCOTS-C-270-28-FT-N-S  
Not all combinations make valid part numbers, please contact SynQor for availability. See product summary page for details.  
Output  
Voltage  
Heatsink  
Option  
Screening  
Level  
Family  
Product Input Voltage  
Package  
Options  
N:Normal  
Threaded  
05:5V  
[ ]:Standard  
12:12V  
15:15V  
24:24V  
28:28V  
48:48V  
S: S-Grade  
M: M-Grade  
Feature  
MCOTS  
C: Converter  
270: 155-425V  
FT:Full Brick Tera  
F:Flanged  
F:Full Feature  
D:Normal  
Non-  
Threaded  
APPLICATION NOTES  
PATENTS  
A variety of application notes and technical white papers can be downloaded  
in pdf format from our website.  
SynQor holds the following U.S. patents, one or more of which apply to  
each product listed in this document. Additional patent applications may  
be pending or filed in the future.  
5,999,417  
6,894,468  
7,119,524  
7,765,687  
6,222,742  
6,896,526  
7,269,034  
7,787,261  
6,545,890  
6,927,987  
7,272,021  
8,023,290  
6,577,109  
7,050,309  
7,272,023  
8,149,597  
6,594,159  
7,072,190  
7,558,083  
8,493,751  
6,731,520  
7,085,146  
7,564,702  
Warranty  
Contact SynQor for further information and to order:  
SynQor offers a two (2) year limited warranty. Complete warranty infor-  
mation is listed on our website or is available upon request from SynQor.  
Phone:  
Toll Free: 888-567-9596  
978-849-0600  
Fax:  
E-mail:  
Web:  
978-849-0602  
mqnbofae@synqor.com  
www.synqor.com  
Information furnished by SynQor is believed to be accurate and reliable.  
However, no responsibility is assumed by SynQor for its use, nor for any  
infringements of patents or other rights of third parties which may result  
from its use. No license is granted by implication or otherwise under any  
patent or patent rights of SynQor.  
Address: 155 Swanson Road  
Boxborough, MA 01719  
USA  
Product # MCOTS-C-270-28-FT  
Phone 1-888-567-9596  
www.synqor.com  
Doc.# 005-0005931 Rev. F  
10/16/2013  
Page 16  

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MCOTS-C-270-28-FT-F-S SYNQOR DC-DC Regulated Power Supply Module, 1 Output, 600W, Hybrid, FULL BRICK PACKAGE-18 获取价格
MCOTS-C-270-28-FT-F-S-F SYNQOR DC-DC Regulated Power Supply Module, 1 Output, 600W, Hybrid, FULL BRICK PACKAGE-18 获取价格
MCOTS-C-270-28-HT-F-S-F SYNQOR DC-DC REG PWR SUPPLY MODULE 获取价格
MCOTS-C-270-28-HT-N-S SYNQOR DC-DC Regulated Power Supply Module, 1 Output, 299.6W, Hybrid, HALF-BRICK PACKAGE-8 获取价格
MCOTS-C-270-28-HT-N-S-F SYNQOR DC-DC REG PWR SUPPLY MODULE 获取价格
MCOTS-C-270-28-HT-N-SF SYNQOR DC-DC Regulated Power Supply Module, 1 Output, 299.6W, Hybrid, HALF-BRICK PACKAGE-8 获取价格
MCOTS-C-28-05-HP SYNQOR MILITARY COTS DC/DC CONVERTER 获取价格
MCOTS-C-28-05-HP-N-S SYNQOR MILITARY COTS DC/DC CONVERTER 获取价格
MCOTS-C-28-05-QT SYNQOR Military COTS DC/DC Converters 获取价格

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