MCOTS-C-48-12-QT Single Output Quarter-brick MILITARY COTS DC/DC CONVERTER 34-75V Continuous Input 34-100V Transient Input 12V Output 12A Output 93% @ 6A / 92% @ 12A Efficiency Full Power Operation: -55C to +100C Mil-COTS 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 M D CO C 48 /D TSV C CIN CO 48 12 N -1 V VE 2O R QT U TE T @ R N -M 12 A 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. Designed and Manufactured in the USA Operational Features * * * * High efficiency, 92% at full rated load current Operating input voltage range: 34-75V Fixed frequency switching provides predictable EMI No minimum load requirement Protection Features Mechanical Features * Industry standard quarter-brick pin-out configuration * Size: 1.54" x 2.39" x 0.50" (39.0 x 60.6 x 12.7 mm) * Total weight: 3.02 oz. (85.7 g) * Flanged baseplate version available Input under-voltage lockout Output current limit and short circuit protection Active back bias limit Output over-voltage protection Thermal shutdown Screening/Qualification Control Features * * * * * * On/Off control referenced to input return * Remote sense for the output voltage * Output voltage trim range of +10%, -20% Safety Features * 2250V, 30 M input-to-output isolation * Certified 60950-1 requirement for basic insulation (see Standards and Qualifications page) Product # MCOTS-C-48-12-QT * * * * * Phone 1-888-567-9596 AS9100 and ISO 9001:2000 certified facility Qualification consistent with MIL-STD-883 Available with S-Grade or M-Grade screening Pre-cap inspection per IPC-610, Class III 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.# 005-0005328 Rev. A 11/03/09 Page 1 MCOTS-C-48-12-QT Output: 12V Current: 12A Technical Specification BLOCK DIAGRAM REGULATION STAGE 1 POSITIVE INPUT ISOLATION STAGE CURRENT SENSE T1 T2 8 T1 T2 3 POSITIVE OUTPUT 4 INPUT RETURN ISOLATION BARRIER GATE DRIVERS CURRENT LIMIT UVLO OVSD 2 ON/OFF OUTPUT RETURN GATE CONTROL OPTO-ISOLATION PRIMARY CONTROL 6 SECONDARY CONTROL TRIM 7 + SENSE 5 - SENSE DATA COUPLING TYPICAL CONNECTION DIAGRAM Vin(+) Vin External Input Filter Electrolytic Capacitor Vout(+) Vsense(+) ON/OFF Trim Vsense(_) Vin(_) Product # MCOTS-C-48-12-QT Phone 1-888-567-9596 www.synqor.com Rtrim-up or Rtrim-down Cload Iload Vout(_) Doc.# 005-0005328 Rev. A 11/03/09 Page 2 MCOTS-C-48-12-QT Output: 12V Current: 12A Technical Specification MCOTS-C-48-12-QT ELECTRICAL CHARACTERISTICS Ta = 25 C, Vin = 48Vdc 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 80 V Continuous Operating 75 V Continuous Operating Transient Protection 100 V 100 ms Isolation Voltage Input to Output 2250 V dc Input to Base-Plate 2250 V dc Output to Base-Plate 2250 V dc Operating Temperature -55 100 C Baseplate temperature Storage Temperature -65 135 C Voltage at ON/OFF input pin -2 18 V INPUT CHARACTERISTICS Operating Input Voltage Range 34 48 75 V Input Under-Voltage Lockout Turn-On Voltage Threshold 32.2 33.0 33.8 V Turn-Off Voltage Threshold 30.225 31 31.775 V Lockout Voltage Hysteresis 2.0 V F Recommended External Input Capacitance 100 Typical ESR 0.1-0.2 Input Filter Component Values (L\C) 4.7\6.6 H\F Internal values; see Figure E Maximum Input Current 6.0 A Vin min; trim up; in current limit No-Load Input Current 80 100 mA Disabled Input Current 2 4 mA Response to Input Transient 0.45 V 500V/ms; see Figure 6 Input Terminal Ripple Current 350 mA RMS Recommended Input Fuse 15 A Fast acting external fuse recommended OUTPUT CHARACTERISTICS Output Voltage Set Point 11.88 12 12.12 V Output Voltage Regulation Over Line 0.1 0.3 % Over Load 0.1 0.3 % Over Temperature -180 180 mV Total Output Voltage Range 11.7 12.3 V Over sample, line, load, temperature & life Output Voltage Ripple and Noise 20MHz bandwidth; see Note 1 Peak-to-Peak 0 60 90 mV Full load RMS 12 20 mV Full load Operating Output Current Range 0 12 A Subject to thermal derating Output DC Current-Limit Inception 13.2 14.4 15.6 A Output voltage 10% Low Output DC Current-Limit Shutdown Voltage 4.9 V Back-Drive Current Limit while Enabled 0.5 A Negative current drawn from output Back-Drive Current Limit while Disabled 10 mA Negative current drawn from output Maximum Output Capacitance 1500 F Vout nominal at full load (resistive load) Output Voltage during Load Current Transient Step Change in Output Current (0.1A/s) 400 mV 50% to 75% to 50% Iout max Settling Time 500 s To within 1% Vout nom Output Voltage Trim Range -20 10 % Across Pins 8&4; Figure C; See Note 2 Output Voltage Remote Sense Range 10 % Across Pins 8&4 Output Over-Voltage Protection 14.0 14.6 15.2 V Over full temp range EFFICIENCY 100% Load 92 % See Figure 1 for efficiency curve 50% Load 93 % See Figure 1 for efficiency curve Note 1: Output is terminated with 1 F ceramic and 22 F low-ESR tantalum capacitors. For applications requiring reduced output voltage ripple and noise, consult SynQor applications support (e-mail: mqnbofae@synqor.com) Note 2: Trim-up range is limited below 10% at low line and full load. Contact SynQor applications support for more detail (e-mail: mqnbofae@synqor. com) Product # MCOTS-C-48-12-QT Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005328 Rev. A 11/03/09 Page 3 MCOTS-C-48-12-QT Output: 12V Current: 12A Technical Specification MCOTS-C-48-12-QT ELECTRICAL CHARACTERISTICS Ta = 25 C, Vin = 48Vdc 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. DYNAMIC CHARACTERISTICS Turn-On Transient Turn-On Time 10 Start-Up Inhibit Time 200 230 250 Output Voltage Overshoot 0 ISOLATION CHARACTERISTICS Isolation Voltage (dielectric strength) Isolation Resistance 30 Isolation Capacitance (input to output) 1000 TEMPERATURE LIMITS FOR POWER DERATING CURVES Semiconductor Junction Temperature 125 Board Temperature 125 Transformer Temperature 125 Maximum Baseplate Temperature, Tb 100 FEATURE CHARACTERISTICS Switching Frequency 250 ON/OFF Control Off-State Voltage 2.4 18 On-State Voltage -2 0.8 ON/OFF Control Pull-Up Voltage 5 Pull-Up Resistance 50 Over-Temperature Shutdown OTP Trip Point 125 Over-Temperature Shutdown Restart Hysteresis 10 RELIABILITY CHARACTERISTICS Calculated MTBF (Telcordia) TR-NWT-000332 2.5 Calculated MTBF (MIL-217) MIL-HDBK-217F 1.8 Field Demonstrated MTBF TBD Note 1: Higher values of isolation capacitance can be added external to the module Units ms ms % M pF C C C C Notes & Conditions Full load, Vout=90% nom. Figure F Maximum Output Capacitance See Absolute Maximum Ratings See Note 1 Package rated to 150C UL rated max operating temp 130C kHz V V k C C 106 Hrs. 106 Hrs. 106 Hrs. Application notes Figures A & B Average PCB Temperature 80% load, 200LFM, 40C Ta 80% load, 200LFM, 40C Ta See our website for details STANDARDS COMPLIANCE Parameter Notes & Conditions STANDARDS COMPLIANCE UL 60950-1:2003 Basic Insulation CAN/CSA-C22.2 No. 60950-1:2003 EN60950-1:2001 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-48-12-QT Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005328 Rev. A 11/03/09 Page 4 MCOTS-C-48-12-QT Output: 12V Current: 12A 100 100 95 95 90 90 Efficiency (%) Efficiency (%) Technical Specification 85 80 75 70 85 80 75 48 Vin 48 Vin 65 65 75 Vin 1 2 3 4 5 6 7 Load Current (A) 8 9 10 11 12 100C Figure 2: Efficiency at nominal output voltage and 60% rated power vs. case temperature for minimum, nominal, and maximum input voltage. 16 16 12 12 8 4 25C Case Temperature (C) Power Dissipation (W) Power Dissipation (W) Figure 1: Efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25C. 75 Vin 60 -55C 60 0 34 Vin 70 34 Vin 8 4 34 Vin 34 Vin 48 Vin 48 Vin 75 Vin 75 Vin 0 -55C 0 0 3 6 Load Current (A) 9 12 Figure 3: Power dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at TCASE =25C. 25C 100C Case Temperature (C) Figure 4: Power dissipation at nominal output voltage and 60% rated power vs. case temperature for minimum, nominal, and maximum input voltage. 120 Typical Current Limit Inception Point Output Voltage (%) 100 80 Typical Output Voltage at Shutdown 60 40 16 Vin 28 Vin 20 40 Vin 0 0 Figure 5: Load current (5A/div) as a function of time (2ms/div and 50ms/div) when the converter attempts to turn on into a 10 m short circuit. Product # MCOTS-C-48-12-QT Phone 1-888-567-9596 10 20 30 40 50 60 70 80 90 Load Current (%) 100 110 120 130 140 150 Figure 6: Output voltage vs. load current showing typical current limit curves. See Current Limit section in the Application Notes. www.synqor.com Doc.# 005-0005328 Rev. A 11/03/09 Page 5 MCOTS-C-48-12-QT Output: 12V Current: 12A Technical Specification Figure 7: Typical startup waveform. 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. ENA1 and ENA2 both previously high. Ch 1: Vout (50V/div). Ch 3: Vin (5V/div). Figure 9: Input terminal current ripple, iC, at full rated output current and nominal input voltage with SynQor MCOTS filter module (200 mA/div). Bandwidth: 20MHz. See Figure 17. Figure 10: Output voltage ripple, Vout, at nominal input voltage and rated load current (10 mV/div). Load capacitance: 1F ceramic capacitor and 10F tantalum capacitor. Bandwidth: 10 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/s). Load cap: 1 F ceramic and 15 F tantalum capacitors. Ch 1: Vout (500mV/div), Ch 2: Iout (5A/div). Figure 12: Output voltage response to step-change in input voltage (250V/ms). Load cap: 100 F electrolytic output capacitance. Ch 1: Vout (500mV/div), Ch 2: Vin (50V/div). Product # MCOTS-C-48-12-QT Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005328 Rev. A 11/03/09 Page 6 MCOTS-C-48-12-QT Output: 12V Current: 12A Technical Specification 0 1 Forward Transmission (dB) Output Impedance (ohms) -10 0.1 0.01 0.001 48Vin 75Vin 100 1,000 10,000 -30 -40 -50 -60 -90 100,000 10 Hz 100 1,000 10,000 100,000 Hz Figure 13: Magnitude of incremental output impedance (Zout = vout/ iout) for minimum, nominal, and maximum input voltage at full rated power. Figure 14: Magnitude of incremental forward transmission (FT = vout/ vin) for minimum, nominal, and maximum input voltage at full rated power. 1000 Input Impedance (Ohms) -10 Reverse Transmission (dB) 48Vin 75Vin 34Vin -70 -80 34Vin 0.0001 10 -20 -20 -30 48Vin 100 10 48Vin 1 75Vin 75Vin 34Vin 34Vin 0.1 -40 10 100 1,000 10,000 10 100,000 Figure 15: Magnitude of incremental reverse transmission (RT = iin/ iout) for minimum, nominal, and maximum input voltage at full rated power. 1,000 10,000 100,000 Figure 16: Magnitude of incremental input impedance (Zin = vin/iin) for minimum, nominal, and maximum input voltage at full rated power. 1 F ceramic capacitor 4.7 H source impedance iC VSOURCE 100 Hz Hz DC/DC Converter 100 F, 0.2 ESR electrolytic capacitor VOUT 10 F, 100m ESR tantalum capacitor Figure 17: Test set-up diagram showing measurement points for Input Terminal Ripple Current (Figure 9) and Output Voltage Ripple (Figure 10). Product # MCOTS-C-48-12-QT Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005328 Rev. A 11/03/09 Page 7 MCOTS-C-48-12-QT Output: 12V Current: 12A Technical Specification BASIC OPERATION AND FEATURES CONTROL FEATURES 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 stepup or step-down to achieve the 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(-). The ON/OFF signal is active low (meaning that a low turns the converter on). Figure A details four possible circuits for driving the ON/OFF pin. Figure B is a detailed look of the internal ON/ OFF circuitry. 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 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. 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 thermal derating performance in extreme situations. This series of converters use the industry standard footprint and pin-out configuration. REMOTE SENSE(+) (Pins 7 and 5): The SENSE(+) inputs correct for voltage drops along the conductors that connect the converter's output pins to the load. Pin 7 should be connected to Vout(+) and Pin 5 should be connected to Vout(-) at the point on the board 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 [Vout(+) - Vout(-)] - [Vsense(+) - Vsense(-)] < Sense Range % x Vout Pins 7 and 5 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 specified value. 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. ON/OFF ON/OFF Vin(_) Vin(_) Remote Enable Circuit 5V Negative Logic (Permanently Enabled) 50k 5V ON/OFF ON/OFF TTL/ CMOS ON/OFF Vin(_) Vin(_) Open Collector Enable Circuit TTL 100pF Vin(_) Direct Logic Drive Figure A: Various circuits for driving the ON/OFF pin. Product # MCOTS-C-48-12-QT 50k Phone 1-888-567-9596 www.synqor.com Figure B: Internal ON/OFF pin circuitry Doc.# 005-0005328 Rev. A 11/03/09 Page 8 MCOTS-C-48-12-QT Output: 12V Current: 12A Technical Specification 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. It is not necessary for the user to add capacitance at the Trim pin. The node is internally bypassed to eliminate noise. To decrease the output voltage, the user should connect a resistor between Pin 6 and Pin 5 (SENSE(-) input). For a desired decrease of the nominal output voltage, the value of the resistor should be 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. Rtrim-down = 511 (D% )- 10.22 (kW) where Vnominal - Vdesired Vnominal D% = PROTECTION FEATURES x 100% To increase the output voltage, the user should connect a resistor between Pin 6 and Pin 7 (SENSE(+) input). For a desired increase of the nominal output voltage, the value of the resistor should be Rtrim-up = where ( 5.11VOUT x (100+D%) 1.225D% _ 511 _ 10.22 D% ) (kW) Vout = Nominal Output Voltage 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" on our website. The lockout circuitry is a comparator with dc hysteresis. When the input voltage is rising, it must exceed the typical TurnOn Voltage Threshold value (listed on the specifications 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. Trim graphs show 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. Output Current Limit: The maximum current limit 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 CurrentLimit Shutdown Voltage, the converter turns off. 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. The converter then enters a "hiccup mode" where it repeatedly turns on and off at a 5 Hz (nominal) frequency with a 5% duty cycle until the short circuit condition is removed. This prevents excessive heating of the converter or the load board. 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 200 ms the converter will automatically restart. Trim Resistance (k) 100,000 10,000 1,000 100 10 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 % Increase in Vout % Decrease in Vout Figure C: Trim graph for trim-up, trim down. Product # MCOTS-C-48-12-QT Phone 1-888-567-9596 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. www.synqor.com Doc.# 005-0005328 Rev. A 11/03/09 Page 9 MCOTS-C-48-12-QT Output: 12V Current: 12A 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. Vout(+) Vin(+) External Input Filter Vin Electrolytic Capacitor Vsense(+) ON/OFF Trim Vsense(_) Vin(_) Rtrim-up or Rtrim-down Cload Iload 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(+) Vout(+) Internal Input Filter C Converter Vin(_) Vout(-) Figure E: Internal Input Filter Diagram Product # MCOTS-C-48-12-QT Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005328 Rev. A 11/03/09 Page 10 MCOTS-C-48-12-QT Output: 12V Current: 12A Technical Specification Startup Inhibit Period: The Startup Inhibit Period ensures that the converter will remain off for approximately 200 ms when it is shut down for any reason. When an output short is present, this generates a 5 Hz "hiccup mode," which prevents the converter from overheating. In all, there are seven ways that the converter can be shut down, initiating a Startup Inhibit Period: * Input Under-Voltage Lockout When the ON/OFF pin goes high after t2, the Startup Inhibit Period has elapsed, and the output turns on within the typical Turn-On Time. Thermal Considerations: The maximum operating base-plate temperature, TB, is 100 C. As long as the user's thermal system keeps TB < 100 C, the converter can deliver its full rated power. 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 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 C. * Input Over-Voltage Shutdown * Output Over-Voltage Protection BA * 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 Inhibit Period is initiated at t0, t1, and t2: Before time t0, when the input voltage is below the UVL 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. max Pdiss = 100 C - T RTH A BA This value of power dissipation can then be used in conjunction with the data shown in Figure 2 to determine the maximum load current (and power) that the converter can deliver in the given thermal condition. At time t1, the unit is disabled by the ON/OFF pin, and it cannot be enabled again until the Startup Inhibit Period has elapsed. Vin Under-Voltage Lockout TurnOn Threshold ON/OFF (neg logic) ON OFF ON OFF ON 10ms Vout (typical turn on time) 200ms (typical start-up inhibit period) t1 t0 200ms 200ms t t2 Figure F: Startup Inhibit Period (turn-on time not to scale) Product # MCOTS-C-48-12-QT Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005328 Rev. A 11/03/09 Page 11 MCOTS-C-48-12-QT Output: 12V Current: 12A Technical Specification Mechanical Drawing - Normal Heatsink Option 1.536 0.020 (39.01 0.5) 1. 030 (26.16) 0.600 (15.24) 0.450 (11.43) 0.300 (7.62) 0.150 (3.81) 0.2530.020 (6.40.5) 0.5000.025 (12.70.63) Overall Height 8 7 6 5 4 0.2630.020 (6.680.5) 2.386 0.020 (60.6 0.5) 2.00 (50.8) Top View Side View 1.86 (47.2) 1 2 3 M3 Threaded Inserts 4 Places See Notes 0.4680.020 (11.890.5) 0.300 (7.62) 0.183.020 (4.65)0.5 0.600 (15.24) PIN DESIGNATIONS NOTES Applied torque per screw should not exceed 6in-lb (0.7 Nm). Baseplate flatness tolerance is 0.004" (.10mm) TIR for surface. Pins 1-3, 5-7 are 0.040" (1.02mm) diameter, with 0.080" (2.03mm) diameter standoff shoulders. 4) Pins 4 and 8 are 0.062" (1.57 mm) diameter with 0.100" (2.54 mm) diameter standoff shoulders. 5) All Pins: Material - Copper Alloy; Finish - Matte Tin over Nickel plate 6) Undimensioned components are shown for visual reference only. 7) Weight: 3.02 oz. (85.7 g) typical 8) All dimensions in inches (mm) Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm) 9) Workmanship: Meets or exceeds IPC-A610 Class II 10) Recommended pin length is 0.03" (0.76mm) greater than the PCB thickness. 1) 2) 3) Product # MCOTS-C-48-12-QT 0.180.010 (4.570.25) Phone 1-888-567-9596 Pin 1 2 Name Vin(+) ON/OFF 3 4 5 6 7 8 Vin(-) Vout(-) SENSE(-) TRIM SENSE(+) Vout(+) Function Positive input voltage TTL input to turn converter on and off, referenced to Vin(-), with internal pull up. Negative input voltage Negative output voltage 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.# 005-0005328 Rev. A 11/03/09 Page 12 MCOTS-C-48-12-QT Output: 12V Current: 12A Technical Specification Mechanical Drawing - Flanged Heatsink Option .01 [0.2] OVERALL HEIGHT .500 .025 [12.7 0.63] 2.200 .020 [ 55.88 0.5 ] 1.536 .020 [ 39.01 0.5 ] .18 [ 4.6 ] SEE NOTE 5 R .065 4 [ 1,65 ] TOP VIEW 2.386 [ 60.6 6 7 [ 15.2 ] [ 11.4 ] .30 [ 7.6 ] .15 [ 3.8 ] 8 BOTTOM VIEW 2.00 [ 50.8 ] 2.07 [ 52.5 ] 1.66 [ 42.2 ] 5 .60 .45 .020 0.5 ] 1.01 [ 25.7 ] .36 [ 9.1 ] .70 [ 17.8 ] .183 .020 [ 4.65 0.5 ] .02 [ 0.6 ] 3 1 1.30 [ 33 ] .800 .020 [ 20.32 0.5 ] .13 [ 3.2 ] BOTTOMSIDE CLEARANCE .020 .010 [0.51 0.25] .30 [ 7.6 ] .60 [ 15.2 ] PIN DESIGNATIONS NOTES Applied torque per screw should not exceed 5in-lb (3in-lb recommended). 2) Baseplate flatness tolerance is 0.01" (.25mm) TIR for surface. 3) Pins 1-3, 5-7 are 0.040" (1.02mm) diameter, with 0.080" (2.03mm) diameter standoff shoulders. 4) Pins 4 and 8 are 0.062" (1.57 mm) diameter with 0.100" (2.54 mm) diameter standoff shoulders. 5) All Pins: Material - Copper Alloy; Finish - Matte Tin over Nickel plate 6) Weight: 3.12 oz (88.5 g) typical 7) Undimensioned components are shown for visual reference only. 8) All dimensions in inches (mm) Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm) 9) Workmanship: Meets or exceeds IPC-A610 Class II 10) Recommended pin length is 0.03" (0.76mm) greater than the PCB thickness. 11) A thermal interface material is required to assure proper heat transfer from the flanged baseplate to the cooling surface. Thermal grease, conductive pads, compounds, and other similar products are available from many heatsink manufacturers. 1) Product # MCOTS-C-48-12-QT 1 2 Phone 1-888-567-9596 Pin 1 2 Name Vin(+) ON/OFF 3 4 5 6 7 8 Vin(-) Vout(-) SENSE(-) TRIM SENSE(+) Vout(+) Function Positive input voltage TTL input to turn converter on and off, referenced to Vin(-), with internal pull up. Negative input voltage Negative output voltage 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.# 005-0005328 Rev. A 11/03/09 Page 13 MCOTS-C-48-12-QT Output: 12V Current: 12A Technical Specification Mil-COTS Qualification Details #Tested (# Failed) Consistent with MIL-STD-883F Method Life Testing Visual, mechanical and electrical testing before, during and after 1000 hour burn-in @ full load 15 (0) Method 1005.8 Shock-Vibration Visual, mechanical and electrical testing before, during and after shock and vibration tests 5 (0) Humidity +85C, 85% RH, 1000 hours, 2 minutes on/6 hours off 8 (0) Method 1004.7 Temperature Cycling 500 cycles of -55C to +100C (30 minute dwell at each temperature 10 (0) Method 1010.8 Solderability 15 pins 15 (0) Method 2003 DMT -65C to +110C across full line and load specifications in 5C steps 7 (0) Test Name Consistent with MIL-STD-883F Method 5005 MIL-STD-202, Method 1 Condition A Mil-COTS Screening Screening S-Grade M-Grade Baseplate Operating Temperature -55C to +100C -55C to +100C Storage Temperature -65C to +135C -65C to +135C Pre-Cap Inspection Temperature Cyclling Burn-In Process Description IPC-610, Class III Method 1010, Condition B, 10 Cycles 100C Baseplate 12 Hours 96 Hours 100% 25C -55C, +25C, +100C MIL-STD-2008 Final Electrical Test Final Visual Inspection Product # MCOTS-C-48-12-QT Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005328 Rev. A 11/03/09 Page 14 MCOTS-C-48-12-QT Output: 12V Current: 12A Technical Specification Ordering Information/ Part Numbering Family MCOTS Product C: Converter F: Filter Input Voltage 28: 16-40V 48: 34-75V 270: 155-425V Output Voltage 1R2: 1.2V 1R5: 1.5V 1R8: 1.8V 2R5: 2.5V 3R3: 3.3V 05: 5V 07: 7V 12: 12V 15: 15V 24: 24V 28: 28V 40: 40V 48: 48V 50: 50V P: Passive T: Active Package Heatsink Option Screening Level FT: Full Brick N: Normal HP: Half Brick Peta Threaded HZ: Half Brick Zeta S: S-Grade D: Normal QT: Quarter Brick M: M-Grade Non-Threaded EG: Eighth Brick F: Flanged SM: Sixteenth Brick Example MCOTS-C-48-12-QT-N-S Not all combinations make valid part numbers, please contact SynQor for availability. See product summary page for details. 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 brochure. Additional patent applications may be pending or filed in the future. 5,999,417 6,222,742 6,545,890 6,577,109 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 Contact SynQor for further information: Phone: Toll Free: Fax: E-mail: Web: Address: Product # MCOTS-C-48-12-QT 978-849-0600 888-567-9596 978-849-0602 mqnbofae@synqor.com www.synqor.com 155 Swanson Road Boxborough, MA 01719 USA Phone 1-888-567-9596 Warranty SynQor offers a two (2) year limited warranty. Complete warranty information is listed on our website or is available upon request from SynQor. 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. www.synqor.com Doc.# 005-0005328 Rev. A 11/03/09 Page 15