MCOTS-C-28-15-QE Single Output Quarter-brick MILITARY COTS DC-DC CONVERTER 16-40V Continuous Input 16-50V Transient Input 15V Output 20A Output 94% @ 10A / 94% @ 20A 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. E-N-M -28-15-Q MCOTS-C NVERTER O 0A C C -D V @2 DC 0V) IN 15 OUT 28 (16-4 Safety Features • 2250V, 30 MΩ input-to-output isolation • Certified 60950-1 requirement for basic insulation (see Standards and Qualifications page) Designed and Manufactured in the USA Control Features • On/Off control referenced to input return • Remote sense for the output voltage • Wide output voltage trim range of +10%, -50% Mechanical Features • Industry standard quarter-brick pin-out • Size: 1.54” x 2.39” x 0.50” (39.0 x 60.6 x 12.7 mm) • Total weight: 3.3oz (93.4g) • Flanged baseplate version available Protection Features • • • • • Operational Features • • • • High efficiency, 94% at full rated load current Operating input voltage range: 16-40 V Fixed frequency switching provides predictable EMI No minimum load requirement Screening/Qualification 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, F) Product # MCOTS-C-28-15-QE Phone 1-888-567-9596 Input under-voltage lockout Output current limit and short circuit protection Active back bias limit Auto-recovery output over-voltage protection Thermal shutdown • • • • AS9100 and ISO 9001 certified facility Qualified to MIL-STD-810 Available with S-Grade or M-Grade screening Temperature cycling per MIL-STD-883, Method 1010, Condition B, 10 cycles • Burn-In at 100C baseplate temperature • Final visual inspection per MIL-STD-2008 • Full component traceability www.synqor.com Doc.# 005-0006483 Rev. B 06/10/2015 Page 1 MCOTS-C-28-15-QE Output: 15V Current: 20A Technical Specification BLOCK DIAGRAM ISOLATION STAGE REGULATION STAGE 8 CURRENT SENSE 1 Vout(+) Vin(+) 3 4 IN RTN ISOLATION BARRIER OUT RTN GATE DRIVERS CURRENT LIMIT UVLO GATE CONTROL 6 OPTO-ISOLATION PRIMARY CONTROL TRIM SECONDARY CONTROL 7 SENSE(+) 2 5 ON/OFF SENSE(-) DATA COUPLING TYPICAL CONNECTION DIAGRAM Vin(+) Vin External Input Filter Electrolytic Capacitor Vout(+) Vsense(+) ON/OFF Trim Vsense(_) Vin(_) Product # MCOTS-C-28-15-QE Phone 1-888-567-9596 www.synqor.com Rtrim-up or Rtrim-down Cload Iload Vout(_) Doc.# 005-0006483 Rev. B 06/10/2015 Page 2 MCOTS-C-28-15-QE Output: 15V Current: 20A Technical Specification MCOTS-C-28-15-QE ELECTRICAL CHARACTERISTICS Tb = 25 °C, Vin = 28dc 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. ABSOLUTE MAXIMUM RATINGS Input Voltage Non-Operating Operating Operating Transient Protection Isolation Voltage Input to Output Input to Base-Plate Output to Base-Plate Operating Temperature Storage Temperature Voltage at ON/OFF input pin INPUT CHARACTERISTICS Operating Input Voltage Range Input Under-Voltage Lockout Turn-On Voltage Threshold Turn-Off Voltage Threshold Lockout Voltage Hysteresis Recommended External Input Capacitance Input Filter Component Values (C1\Lin\C2) Maximum Input Current No-Load Input Current Disabled Input Current Response to Input Transient Input Terminal Ripple Current Recommended Input Fuse OUTPUT CHARACTERISTICS Output Voltage Set Point Output Voltage Regulation Over Line Over Load Over Temperature Total Output Voltage Range Output Voltage Ripple and Noise Peak-to-Peak RMS Operating Output Current Range 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 (5A/µs) Settling Time Output Voltage Trim Range Output Over-Voltage Protection EFFICIENCY 100% Load 50% Load Product # MCOTS-C-28-15-QE Typ. -1 -55 -65 -2 Max. Units 60 40 50 V V V 2250 2250 2250 +100 +135 9 V dc V dc V dc °C °C V 16 28 40 V 14.7 13.4 15.2 13.9 1.3 220 15.7 14.4 V V V µF 0.1\0.22\28.3 26.3 250 8 Continuous Continuous 1s transient, square wave Baseplate temperature 50V transient for 1s Typical ESR 0.1-0.2 Ω; Figure 13 Internal values; see Figure D Vin min; trim up; in current limit 30 A mA mA V mA A 15.00 15.15 V ±0.25 ±0.25 ±0.35 ±0.35 260 15.34 % % mV V 260 70 20 26.0 10 mV mV A A V A mA mF 10 18.9 mV µs % V 50% to 75% to 50% Iout max, 100μF load cap To within 1% Vout nom Across Pins 7 & 5; Figure B Over full temp range % % See Figure 1 for efficiency curve See Figure 1 for efficiency curve 200 5 2.5 550 14.85 µF\µH\µF Notes & Conditions 0.25V/µs input transient; See Figure 12 RMS Fast acting external fuse recommended See Note 1 -260 14.67 130 35 0 22.0 24.0 6 5 3 500 80 -50 17.5 Phone 1-888-567-9596 18.2 94 94 www.synqor.com Over sample, line, load, temperature & life 20MHz bandwidth; see Note 2 Full load Full load Subject to thermal derating Output voltage 10% Low Negative current drawn from output Negative current drawn from output Vout nominal at full load (resistive load) Doc.# 005-0006483 Rev. B 06/10/2015 Page 3 MCOTS-C-28-15-QE Output: 15V Current: 20A Technical Specification MCOTS-C-28-15-QE ELECTRICAL CHARACTERISTICS Tb = 25 °C, Vin = 28dc 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 35 ms Full load, Vout=90% nom. Output Voltage Overshoot 2 % Maximum Output Capacitance ISOLATION CHARACTERISTICS Isolation Voltage (dielectric strength) 2250 V See Absolute Maximum Ratings Isolation Resistance 30 MΩ Isolation Capacitance (input to output) 1000 pF See Note 3 TEMPERATURE LIMITS FOR POWER DERATING CURVES Semiconductor Junction Temperature 125 °C Package rated to 150 °C Board Temperature 125 °C UL rated max operating temp 130 °C Transformer Temperature 125 °C Maximum Baseplate Temperature, Tb 100 °C FEATURE CHARACTERISTICS Switching Frequency Regulation Stage 230 240 250 kHz Switching Frequency Isolation Stage 115 120 125 kHz ON/OFF Control Off-State Voltage 2.4 9.0 V On-State Voltage -2.0 0.8 V ON/OFF Control Pull-Up Voltage 4.75 5.00 5.25 V Pull-Up Resistance 20 kΩ Over-Temperature Shutdown OTP Trip Point 120 °C Average PCB Temperature Over-Temperature Shutdown Restart Hysteresis 10 °C RELIABILITY CHARACTERISTICS Calculated MTBF per MIL-HDBK-217F 3.4 106 Hrs. Ground Benign, 70°C Tb Calculated MTBF per MIL-HDBK-217F 0.58 106 Hrs. Ground Mobile, 70°C Tb Note 1: Line and load regulation is limited by duty cycle quantization and does not indicate a shift in the internal voltage reference. Note 2: For applications requiring reduced output voltage ripple and noise, consult SynQor applications support (e-mail: [email protected]). Note 3: Higher values of isolation capacitance can be added external to the module. STANDARDS COMPLIANCE Parameter Notes & Conditions STANDARDS COMPLIANCE UL 60950-1/R:2011-12 CAN/CSA-C22.2 No. 60950-1/A1:2011 EN 60950-1/A2:2013 Basic Insulation 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-28-15-QE Phone 1-888-567-9596 www.synqor.com Doc.# 005-0006483 Rev. B 06/10/2015 Page 4 MCOTS-C-28-15-QE Output: 15V Current: 20A Technical Specification 95 95 90 90 85 85 Efficiency (%) 100 Efficiency (%) 100 80 75 75 70 70 16 Vin 16 Vin 40 Vin 0 2 4 6 8 10 12 14 16 18 28 Vin 65 28 Vin 65 60 80 40 Vin 60 -55ºC 20 25ºC Figure 2: Efficiency at nominal output voltage and 60% rated power vs. case temperature for minimum, nominal, and maximum input voltage. 40 40 35 35 30 30 Power Dissipation (W) Power Dissipation (W) Figure 1: Efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. 25 20 15 10 16 Vin 25 20 15 10 28 Vin 5 0 16 Vin 5 28 Vin 40 Vin 0 2 4 6 8 10 12 14 16 18 40 Vin 0 -55ºC 20 25ºC 100ºC Case Temperature (ºC) Load Current (A) Figure 3: Power Dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at TCASE=25°C. Figure 4: Power Dissipation at nominal output voltage and 60% rated power vs. case temperature for minimum, nominal, and maximum input voltage. 25 18 15 Output Voltage (V) 20 Iout(A) 100ºC Case Temperature (ºC) Load Current (A) 15 10 12 9 6 16 Vin 5 28 Vin 3 40 Vin 0 50 60 70 80 90 100 0 110 Base Plate Temperature (ºC) Phone 1-888-567-9596 5 10 15 20 25 30 Load Current (A) Figure 5: Thermal Derating (maximum output current vs. base plate temperature) at nominal input voltage. Product # MCOTS-C-28-15-QE 0 Figure 6: Output I-V Characteristics (output voltage vs. load current) showing typical current limit curves. See Current Limit section in the Application Notes. www.synqor.com Doc.# 005-0006483 Rev. B 06/10/2015 Page 5 MCOTS-C-28-15-QE Output: 15V Current: 20A Technical Specification Figure 7: Typical Startup Waveform, input voltage pre-applied, ON/OFF Pin on Ch 2. Figure 8: Turn-On Transient at full resistive load and zero output capacitance initiated by Vin. Ch 1: Vout (5V/div). Ch 2: Vin (20V/div). Figure 9: Input Terminal Current Ripple, iC, at full rated output current and nominal input voltage with 220µF electrolytic capacitor (1A/div). Bandwidth: 20MHz. See Figure 13. Figure 10: Output Voltage Ripple, Vout, at nominal input voltage and rated load current (100 mV/div). Load capacitance: 1µF ceramic capacitor and 100µF electrolytic capacitor. Bandwidth: 20 MHz. See Figure 13. Figure 11: Output Voltage Response to Step-Change in Load Current (50%75%-50% of Iout(max); dI/dt = 5 A/µs). Load cap: 1 µF ceramic and 100 µF electrolytic capacitors. Ch 1: Vout (500mV/div), Ch 2: Iout (10A/div). Figure 12: Output Voltage Response to Step-Change in Input Voltage (250V/ ms). Load cap: 100 µF electrolytic output capacitance. Ch 1: Vin (2V/div), Ch 2: Vout (20V/div). Product # MCOTS-C-28-15-QE Phone 1-888-567-9596 www.synqor.com Doc.# 005-0006483 Rev. B 06/10/2015 Page 6 MCOTS-C-28-15-QE Output: 15V Current: 20A Technical Specification Input Reflected Ripple Current source impedance iS Input Terminal Ripple Current iC Output Voltage Ripple DC-DC Converter VOUT VSOURCE electrolytic capacitor ceramic electrolytic capacitor capacitor Figure 13: Test Set-up Diagram showing measurement points for Input Terminal Ripple Current (Figure 9) and Output Voltage Ripple (Figure 10). Product # MCOTS-C-28-15-QE Phone 1-888-567-9596 Figure 14: Output Short Load Current (20A/div) as a function of time (20ms/ div) when the converter attempts to turn on into a 10 mΩ short circuit. www.synqor.com Doc.# 005-0006483 Rev. B 06/10/2015 Page 7 MCOTS-C-28-15-QE Output: 15V Current: 20A Technical Specification BASIC OPERATION AND FEATURES CONTROL FEATURES This converter series uses a two-stage power conversion topology. The first stage 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 stepdown to achieve the low output voltage required. REMOTE ON/OFF (Pin 2): The ON/OFF input, Pin 2, permits the user to control when the converter is on or off. This input is referenced to the return terminal of the input bus, Vin(-). Both the first stage and the second stage switch at a fixed frequency for predictable EMI performance. Rectification of the transformer’s output is accomplished with synchronous rectifiers. These devices, which are MOSFETs with a very low on-state resistance, dissipate significantly less energy than Schottky diodes, enabling the converter to achieve high efficiency. 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 thermal derating performance in extreme situations. To further withstand harsh environments and thermally demanding applications, the converter is available totally encased. See Ordering Information page for available thermal design options. SynQor quarter-brick converters use the industry standard footprint and pin-out. ON/OFF Remote Enable Circuit ON/OFF Open Collector Enable Circuit Note: the output over-voltage protection circuit senses the voltage across the output (pins 8 and 4) to determine when it should trigger, not the voltage across the converter’s sense leads (pins 7 and 5). Therefore, the resistive drop on the board should be small enough so that output OVP does not trigger, even during load transients. Rtrim-down = where ON/OFF Direct Logic Drive ( 511% – 10.22 Δ% ) kΩ Vnominal – Vdesired × 100% Vnominal To increase the output voltage, the user should connect a resistor between Pin 6 (TRIM) and Pin 7 (SENSE(+) input). For a desired increase of the nominal output voltage, the value of the resistor should be: Δ% = Vin(_) Vin(_) Pin 7 should connect to Vout(+) and Pin 5 should connect to Vout() at the point on the board where regulation is desired. If these connections are not made, the converter will deliver an output voltage that is slightly higher than its specified value. To decrease the output voltage, the user should connect a resistor between Pin 6 (TRIM) and Pin 5 (SENSE(-) input). For a desired decrease of the nominal output voltage, the value of the resistor should be: Negative Logic (Permanently Enabled) 5V ON/OFF TTL/ CMOS REMOTE SENSE Pins 7(+) and 5(-): The SENSE(+) and SENSE(-) inputs correct for voltage drops along the conductors that connect the converter’s output pins to the load. OUTPUT VOLTAGE TRIM (Pin 6): The TRIM input permits the user to adjust the output voltage across the sense leads up or down according to the trim range specifications. SynQor uses industry standard trim equations. Vin(_) Vin(_) In negative logic versions, the ON/OFF signal is active low (meaning that a low voltage turns the converter on). In positive logic versions, the ON/OFF input is active high (meaning that a high voltage turns the converter on). Fig A details possible circuits for driving the ON/ OFF pin. See last page for available enable logics. Rtrim-up = 5.11 Figure A: Various Circuits for Driving the ON/OFF Pin. [ | ( | Vnominal – 2 ) × Vdesired + Vnominal 1.225 Vdesired – Vnominal ] kΩ The Trim Graph in Figure B shows the relationship between the trim resistor value and Rtrim-up and Rtrim-down, showing 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. Product # MCOTS-C-28-15-QE Phone 1-888-567-9596 www.synqor.com Doc.# 005-0006483 Rev. B 06/10/2015 Page 8 MCOTS-C-28-15-QE Output: 15V Current: 20A Technical Specification It is not necessary for the user to add capacitance at the TRIM pin. The node is internally filtered to eliminate noise. 100,000.0 Trim Resistance (kOhms) 10,000.0 Total DC Variation of Vout: For the converter to meet its 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. 1,000.0 100.0 10.0 1.0 0.1 0.0 0 5 10 15 20 25 % increase Vout 30 35 40 45 50 % decrease Vout Figure B: Trim Graph. PROTECTION FEATURES Input Under-Voltage Lockout (UVLO): The converter is designed to turn off when the input voltage is too low, helping to avoid an input system instability problem, which is described in more detail in the application note titled “Input System Instability” on the SynQor website. When the input is rising, it must exceed the typical “Turn-On Voltage Threshold”* before the converter will turn on. Once the converter is on, the input must fall below the typical "Turn-Off Voltage Threshold"* before the converter will turn off. Output Current Limit (OCP): If the output current exceeds the “Output DC Current Limit Inception” value*, then a fast linear current limit controller will reduce the output voltage to maintain a constant output current. If as a result, the output voltage falls below the “Output DC Current Limit Shutdown Voltage”* for more than 50 ms, then the unit will enter into hiccup mode, with a 500 ms off-time. The unit will then automatically attempt to restart. Back-Drive Current Limit: If there is negative output current of a magnitude larger than the “Back-Drive Current Limit while Enabled” specification*, then a fast back-drive limit controller will increase the output voltage to maintain a constant output current. If this results in the output voltage exceeding the “Output OverVoltage Protection” threshold*, then the unit will shut down. Output Over-Voltage Limit (OVP): 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 500 ms the converter will automatically restart. Over-Temperature Shutdown (OTP): A thermistor 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 “OverTemperature 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”*. Startup Inhibit Period: The Startup Inhibit Period ensures that the converter will remain off for approximately 500 ms when it is shut down due to a fault. This generates a 2 Hz “hiccup mode,” preventing the converter from overheating. There are multiple ways the converter can be shut down, initiating a Startup Inhibit Period: • • • • Output Over-Voltage Protection Current Limit Short Circuit Protection Disabling via ON/OFF input * See Electrical Characteristics section. Product # MCOTS-C-28-15-QE Phone 1-888-567-9596 www.synqor.com Doc.# 005-0006483 Rev. B 06/10/2015 Page 9 MCOTS-C-28-15-QE Output: 15V Current: 20A 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: A typical circuit diagram, Figure C below details the input filtering and voltage trimming. Input Filtering and External Input Capacitance: Figure D below shows the internal input filter components. This filter dramatically reduces input terminal ripple current, which otherwise could exceed the rating of an external electrolytic input capacitor. The recommended external input capacitance is specified in the Input Characteristics section of the Electrical Specifications. More detailed information is available in the application note titled “EMI Characteristics” on the SynQor website. Output Filtering and External Output Capacitance: The internal output filter components are shown in Figure D below. This filter dramatically reduces output voltage ripple. Some minimum external output capacitance is required, as specified in the Output Characteristics area of the Electrical Characteristics section. No damage will occur without this capacitor connected, but peak output voltage ripple will be much higher. Thermal Considerations: For baseplated and encased versions, the max operating baseplate temperature, TB, is 100 ºC. Refer to the Thermal Derating Curves in the Technical Figures section 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, RTHBA, of the chosen heatsink between the baseplate and the ambient air for a given airflow rate. This information is usually available from the heatsink vendor. The following formula can the be used to determine the maximum power the converter can dissipate for a given thermal condition if its base-plate is to be no higher than 100 ºC. Pdiss max Vin 100 ºC - TA RTHBA This value of maximum power dissipation can then be used in conjunction with the data shown in the Power Dissipation Curves in the Technical Figures section to determine the maximum load current (and power) that the converter can deliver in the given thermal condition. For convenience, Thermal Derating Curves are provided in the Technical Figures section. Vin(+) Vout(+) Vsense(+) Electrolytic Capacitor External Input Filter = ON/OFF Trim Vsense(_) Vin(_) Rtrim-up or Rtrim-down Cload Iload Vout(_) Figure C: Typical Application Circuit (negative logic unit, permanently enabled). Lin Vin(+) Vout(+) C1 C2 Regulation Stage Current Sense Isolation Stage Vin(_) Vout(-) Figure D: Internal Input and Output Filter Diagram (component values listed in Electrical Characteristics section). Product # MCOTS-C-28-15-QE Phone 1-888-567-9596 www.synqor.com Doc.# 005-0006483 Rev. B 06/10/2015 Page 10 MCOTS-C-28-15-QE Output: 15V Current: 20A Technical Specification Mechanical Drawing – Normal Thermal Design Option 1.536 [39.01] 1.030 [26.16] 0.450 [11.43] SEATING PLANE HEIGHT 0.500 0.025 [12.7 0.63] PIN EXTENSION 0.180 [4.57] 0.150 [3.81] 4 5 6 7 8 TOP VIEW 1.860 2.386 [47.24] [60.60] 2.000 [50.80] 0.004 [0.10] 0.08 [2.0] 3 1 0.215 [5.46 0.020 0.50] 2) 3) 4) 5) 6) 7) PIN DESIGNATIONS APPLIED TORQUE PER M3 SCREW 4in-lb RECOMMENDED (5in-lb LIMIT) SCREW SHOULD NOT EXCEED 0.100" (2.54mm) DEPTH BELOW THE SURFACE OF THE BASEPLATE. BASEPLATE FLATNESS TOLERANCE IS 0.004" (.10mm) TIR FOR SURFACE. PINS 1-3. 5-7 ARE 0.040" (1.02mm) DIA. WITH 0.080" (2.03mm) DIA. STANDOFFS. PINS 4 AND 8 ARE 0.062" (1.57mm) DIA. WITH 0.100" (2.54mm) DIA STANDOFFS ALL PINS: MATERIAL: COPPER ALLOY FINISH: MATTE TIN OVER NICKEL PLATE WEIGHT: 3.3 oz. (93.4 g) ALL DIMENSIONS IN INCHES(mm) TOLERANCES: X.XXIN +/-0.02 (X.Xmm +/-0.5mm) X.XXXIN +/-0.010 (X.XXmm +/-0.25mm) Product # MCOTS-C-28-15-QE 1 0.300 [7.62] 0.600 [15.24] THREADED INSERT SEE NOTE 1 (4 PLCS) NOTES 1) 2 Phone 1-888-567-9596 Pin 1 2 Name Vin(+) ON/OFF 3 4 5 6 7 8 IN RTN OUT RTN SENSE(–) TRIM SENSE(+) Vout(+) Function Positive input voltage TTL input to turn converter on and off, referenced to Vin(–), with internal pull up. Input return Output return Negative remote sense1 Output voltage trim2 Positive remote sense3 Positive output voltage Notes: 1) SENSE(–) should be connected to Vout(–) either remotely or at the converter. 2) Leave TRIM pin open for nominal output voltage. 3) SENSE(+) should be connected to Vout(+) either remotely or at the converter. www.synqor.com Doc.# 005-0006483 Rev. B 06/10/2015 Page 11 MCOTS-C-28-15-QE Output: 15V Current: 20A Technical Specification Mechanical Drawing – Flanged Thermal Design Option 2.200 [55.88] 2.000 [50.80] 1.536 [39.01] 0.450 [11.4] PIN EXTENSION 0.180 [4.6] SEATING PLANE HEIGHT .500±.025 [12.7±0.63] 0.150 [3.8] 4 5 6 7 8 0.010 [0.25] TOP VIEW 2.386 [60.60] 1.300 [33.02] 0.36 [9.1] 2.000 [50.8] 2.066 [52.48] 3 2 1 1 0.70 [17.8] NOTES 1) 2) 3) 4) 5) 6) 7) 0.600 [15.2] PIN DESIGNATIONS - CONVERTER APPLIED TORQUE PER M3 OR 4-40 SCREW 4in-lb RECOMMENDED (5in-lb LIMIT) BASEPLATE FLATNESS TOLERANCE IS 0.010" (.25mm) TIR FOR SURFACE. PINS 1-3. 5-7 ARE 0.040" (1.02mm) DIA. WITH 0.080" (2.03mm) DIA. STANDOFFS. PINS 4 AND 8 ARE 0.062" (1.57mm) DIA. WITH 0.100" (2.54mm) DIA STANDOFFS ALL PINS: MATERIAL: COPPER ALLOY FINISH: MATTE TIN OVER NICKEL PLATE WEIGHT: 3.5 oz (101.1 g) ALL DIMENSIONS IN INCHES(mm) TOLERANCES: X.XXIN +/-0.02 (X.Xmm +/-0.5mm) X.XXXIN +/-0.010 (X.XXmm +/-0.25mm) Product # MCOTS-C-28-15-QE 0.300 [7.6] FLANGE THICKNESS 0.125 [3.2] .130 [3.30] SEE NOTE 1 (6 PLCS) Phone 1-888-567-9596 Pin 1 2 Name Vin(+) ON/OFF 3 4 5 6 7 8 IN RTN OUT RTN SENSE(–) TRIM SENSE(+) Vout(+) Function Positive input voltage TTL input to turn converter on and off, referenced to Vin(–), with internal pull up. Input return Output return Negative remote sense1 Output voltage trim2 Positive remote sense3 Positive output voltage Notes: 1) SENSE(–) should be connected to Vout(–) either remotely or at the converter. 2) Leave TRIM pin open for nominal output voltage. 3) SENSE(+) should be connected to Vout(+) either remotely or at the converter. www.synqor.com Doc.# 005-0006483 Rev. B 06/10/2015 Page 12 MCOTS-C-28-15-QE Output: 15V Current: 20A Technical Specification Mil-COTS Qualification Test Name # Tested Consistent with MIL(# Failed) STD-883F Method Details Life Testing Shock-Vibration 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 Humidity +85˚C, 95% RH, 1000 hours, 2 minutes on / 6 hours off Temperature Cycling 500 cycles of -55˚C to +100˚C (30 minute dwell at each temperature) Solderability 15 pins DMT -65˚C to +110˚C across full line and load specifications in 5˚C steps Altitude 70,000 feet (21 km), see Note 15 (0) 5 (0) 8 (0) 10 (0) 15 (0) 7 (0) 2 (0) Consistent with MIL-STD883F Method 5005 Method 1005.8 MIL-STD-202, Methods 201A & 213B Method 1004.7 Method 1010.8 Condition A Method 2003 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 Process Description S-Grade M-Grade Baseplate Operating Temperature -55˚C to +100˚C -55˚C to +100˚C Storage Temperature -65˚C to +135˚C -65˚C to +135˚C ● ● Pre-Cap Inspection IPC-610, Class III Temperature Cycling Method 1010, Condition B, 10 Cycles Burn-In ● 100˚C Baseplate 12 Hours 96 Hours 100% 25˚C -55˚C, +25˚C, +100˚C MIL-STD-2008 ● ● Final Electrical Test Final Visual Inspection Mil-COTS MIL-STD-810G Qualification Testing MIL-STD-810G Test Method Description Fungus 508.6 Table 508.6-I 500.5 - Procedure I Storage: 70,000ft. / 2 Hr. duration Altitude 500.5 - Procedure II Operating; 70,000ft. / 2 Hr. duration; Ambient Temperature Rapid Decompression 500.5 - Procedure III Storage: 8,000ft. to 40,000ft. Acceleration 513.6 - Procedure II Operating - 15g's Salt Fog 509.5 Storage 501.5 - Procedure I Storage: 135°C / 3 hrs 501.5 - Procedure II Operating: 100°C / 3 hrs 502.5 - Procedure I Storage: -65C / 4 hrs 502.5 - Procedure II Operating: -55C / 3 hrs Temperature Shock 503.5 - Procedure I - C Storage: -65C to 135C; 12 cycles Rain 506.5 - Procedure I Wind Blown Rain Immersion 512.5 - Procedure I Non-Operating Humidity 507.5 - Procedure II Aggravated cycle @ 95% RH (Figure 507.5-7 aggravated temp - humidity cycle, 15 cycles) Random Vibration 514.6 - Procedure I 10-2000 Hz, PSD level of 1.5 g2/Hz(54.6grms), duration = 1 hr/axis 516.6 - Procedure I 20g's peak, 11ms, Functional Shock (Operating no load) (saw tooth) 516.6 - Procedure VI 514.6 - Category 14 510.5 - Procedure I Bench Handling Shock Rotary wing aircraft - helicopter, 4hrs/axis, 20g's (sine sweep from 10 - 500HZ) Blowing Dust 510.5 - Procedure II Blowing Sand High Temperature Low Temperature Shock Sinusoidal vibration Sand and Dust Product # MCOTS-C-28-15-QE Phone 1-888-567-9596 www.synqor.com Doc.# 005-0006483 Rev. B 06/10/2015 Page 13 MCOTS-C-28-15-QE Output: 15V Current: 20A Technical Specification Ordering Information/ Part Numbering Example MCOTS-C-28-15-QE-N-M Not all combinations make valid part numbers, please contact SynQor for availability. See product summary page for details. Family MCOTS Product C: Converter Input Voltage 28: 16-40V Output Voltage 05: 12: 15: 28: 50: 5V 12V 15V 28V 50V Package QE: Heatsink Option QuarterBrick Exa N: Normal Threaded F: Flanged Screening Level Options S: S-Grade Standard [ ]: M: M-Grade Feature APPLICATION NOTES A variety of application notes and technical white papers can be downloaded in pdf format from our website. Contact SynQor for further information and to order: Phone: Toll Free: Fax: E-mail: Web: Address: Product # MCOTS-C-28-15-QE 978-849-0600 888-567-9596 978-849-0602 [email protected] www.synqor.com 155 Swanson Road Boxborough, MA 01719 USA Phone 1-888-567-9596 PATENTS SynQor holds numerous U.S. patents, one or more of which apply to most of its power converter products. Any that apply to the product(s) listed in this document are identified by markings on the product(s) or on internal components of the product(s) in accordance with U.S. patent laws. SynQor’s patents include the following: 5,999,417 6,222,742 6,545,890 6,594,159 6,731,520 6,894,468 6,896,526 6,927,987 7,050,309 7,072,190 7,085,146 7,119,524 7,269,034 7,272,021 7,272,023 7,558,083 7,564,702 7,765,687 7,787,261 8,023,290 8,149,597 8,493,751 8,644,027 WARRANTY SynQor offers a two (2) year limited warranty. Complete warranty information is listed on our website or is available upon request from SynQor. www.synqor.com Doc.# 005-0006483 Rev. B 06/10/2015 Page 14