View MCOTS-C-28V-12-QT-N-M_7076575.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

product # mcots-c-28v-12-qt phone 1-888-567-9596 www.synqor.com doc.# 005-0005666 rev. 1 06/04/10 page 1 mcots-c-28v-12-qt single output quarter-brick MCOTS-C-28V-12-QT-N-M dc/dc converter 28v in 12v out @ 7.0a the milqor series of mil-cots dc/dc converters brings synqors field proven high-efficiency synchronous rectification technology to the military/aerospace industry. synqors 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. full power operation: -55c to +100c mil-cots m ilitary cots dc/dc c onverter designed and manufactured in the usa 9-40v 55v 12v 7a 86% @ 3.5a / 89% @ 7a continuous input transient input output output effciency protection features ? input under-voltage lockout ? output current limit and short circuit protection ? active back bias limit ? output over-voltage protection ? thermal shutdown screening/qualification ? as9100 and iso 9001:2008 certifed facility ? qualifcation consistent with mil-std-883 ? 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 operational features mechanical features control features safety features ? high effciency, 89% at full rated load current ? operating input voltage range: 9-40 v ? fixed frequency switching provides predictable emi ? no minimum load requirement ? on/off control referenced to input return ? remote sense for the output voltage ? output voltage trim range of +10%, -20% ? 2250v, 30 m? input-to-output isolation ? certifed 60950-1 requirement for basic insulation (see standards and qualifcations page) ? industry standard quarter-brick pin-out confguration ? 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 advanced publication advanced publication advanced publication
technical specification product # mcots-c-28v-12-qt phone 1-888-567-9596 www.synqor.com doc.# 005-0005666 rev. 1 06/04/10 page 2 mcots-c-28v-12-qt output: 12v current: 7.0a block diagram typical connection diagram v i n external input filter trim v in( + ) i l oa d c l oa d v out(+ ) r trim-up or r trim-down v sense( + ) on/off v in( _ ) v out( _ ) v sense( _ ) electrolytic capacitor ? sense isolation stage regulation stage 8 4 uvlo ovsd secondary control gate control primary control positive input input return on / off 6 7 5 1 3 2 positive output output return trim + sense gate drivers i s o l a t i o n b a r r i e r t 1 t 1 t 2 t 2 current limit current sense opto - isolation data coupling advanced publication advanced publication advanced publication
technical specification product # mcots-c-28v-12-qt phone 1-888-567-9596 www.synqor.com doc.# 005-0005666 rev. 1 06/04/10 page 3 mcots-c-28v-12-qt output: 12v current: 7.0a mcots-c-28v-12-qt electrical characteristics tb = 25 c, vin = 28 vdc unless otherwise noted; full operating temperature range is -55 c to +100 c baseplate temperature with appropriate power derating. specifcations subject to change without notice. parameter min. typ. max. units notes & conditions absolute maximum ratings input voltage non-operating 60 v continuous operating 40 v continuous operating transient protection 55 v 1 s transient, square wave 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 9 28 40 v 55v transient for 1 s; see note 3 input under-voltage lockout turn-on voltage threshold 9.3 9.5 9.8 v turn-off voltage threshold 8.3 8.5 8.8 v lockout voltage hysteresis 1.0 v recommended external input capacitance 100 f typical esr 0.1-0.2 input filter component values (l\c) 1.0\6.6 h\f internal values; see figure e maximum input current 13.9 a vin min; trim up; in current limit no-load input current 200 250 ma disabled input current 3 5 ma response to input transient 0.35 v 500v/ms; see figure 12 input terminal ripple current 300 ma rms recommended input fuse tbd 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 20 mhz bandwidth; see note 1 peak-to-peak 0 50 100 mv full load rms 8.5 20 mv full load operating output current range 0 7 a subject to thermal derating output dc current-limit inception 7.7 8.4 9.1 a output voltage 10% low output dc current-limit shutdown voltage 5.7 v back-drive current limit while enabled 0.7 a negative current drawn from output back-drive current limit while disabled 1 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 (0.1 a/s) 450 mv 50% to 75% to 50% iout max settling time 100 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 14.04 14.64 15.24 v over full temp range efficiency 100% load 89 % see figure 1 for effciency curve 50% load 86 % see figure 1 for effciency curve note 1: output is terminated with 1 f ceramic and 15 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. note 3: start-up guaranteed above 9.8v, but will operate down to 9v. advanced publication advanced publication advanced publication
technical specification product # mcots-c-28v-12-qt phone 1-888-567-9596 www.synqor.com doc.# 005-0005666 rev. 1 06/04/10 page 4 mcots-c-28v-12-qt output: 12v current: 7.0a mcots-c-28v-12-qt electrical characteristics tb = 25 c, vin = 28 vdc unless otherwise noted; full operating temperature range is -55 c to +100 c baseplate temperature with appropriate power derating. specifcations subject to change without notice. parameter min. typ. max. units notes & conditions dynamic characteristics turn-on transient turn-on time 9 ms full load, vout=90% nom. start-up inhibit time 200 230 250 ms see figure f output voltage overshoot 0 % maximum output capacitance isolation characteristics isolation voltage (dielectric strength) see absolute maximum ratings isolation resistance 30 m isolation capacitance (input to output) 1000 pf see note 1 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 250 270 290 khz for both input and isolation stage on/off control off-state voltage 2.4 1.8 v on-state voltage -2 0.8 on/off control application notes figures a & b pull-up voltage 5 v pull-up resistance 50 k over-temperature shutdown otp trip point 125 c average pcb temperature over-temperature shutdown restart hysteresis 10 c reliability characteristics calculated mtbf per mil-hdbk-217f 3.4 10 6 hrs. ground benign, 70c tb calculated mtbf per mil-hdbk-217f 0.58 10 6 hrs. ground mobile, 70c tb note 1: higher values of isolation capacitance can be added external to the module. 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 offcial safety certifcates on new releases or download from the synqor website. advanced publication advanced publication
technical specification product # mcots-c-28v-12-qt phone 1-888-567-9596 www.synqor.com doc.# 005-0005666 rev. 1 06/04/10 page 5 mcots-c-28v-12-qt output: 12v current: 7.0a 60 65 70 75 80 85 90 95 100 0 1 2 3 4 5 6 7 load current (a) efficiency (%) 12 vin 28 vin 40 vin figure 1: efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25 c. figure 2: efficiency at nominal output voltage and 60% rated power vs. case temperature for minimum, nominal, and maximum input voltage. figure 3: power dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at t case =25 c. figure 4: power dissipation at nominal output voltage and 60% rated power vs. case temperature for minimum, nominal, and maximum input voltage. figure 6: output voltage vs. load current showing typical current limit curves. see current limit section in the application notes. 60 65 70 75 80 85 90 95 100 - 55 oc 25 oc 100 oc case temperature ( oc ) efficiency (%) 12 vin 28 vin 40 vin 0 3 6 9 12 15 - 55 oc 25 oc 100 oc case temperature ( oc ) power dissipation (w) 12 vin 28 vin 40 vin 0 3 6 9 12 15 0 1 2 3 4 5 6 7 load current (a) power dissipation (w) 12 vin 28 vin 40 vin 0 3 6 9 12 15 18 0 2 4 6 8 10 12 load current (a) output voltage (v) 12 vin 28 vin 40 vin figure 5: maximum output current vs. base plate temperature (nominal input voltage). 0 1 2 3 4 5 6 7 8 50 60 70 80 90 100 110 base plate temperature ( c ) iout (a) advanced publication advanced publication
technical specification product # mcots-c-28v-12-qt phone 1-888-567-9596 www.synqor.com doc.# 005-0005666 rev. 1 06/04/10 page 6 mcots-c-28v-12-qt output: 12v current: 7.0a figure 9: input terminal current ripple, i c , at full rated output current and nominal input voltage with synqor mcots flter module (500 ma/div). bandwidth: 20mhz. see figure 17. figure 10: output voltage ripple, vout, at nominal input voltage and rated load current (50 mv/div). load capacitance: 1f ceramic capacitor and 15f tantalum capacitor. bandwidth: 20 mhz. see figure 17. figure 12: output voltage response to step-change in input voltage (500v/ms). load cap: 1 f ceramic and 15 f tantalum capacitors. ch 1: vout (500mv/ div), ch 2: vin (20v/div). 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 (2a/div). figure 8: turn-on transient at full resistive load and zero output capacitance initiated by vin. on/off pin previously low. ch 1: vout (5v/div). ch 2: vin (50v/div). figure 7: typical startup waveform. input voltage pre-applied, on/off pin on ch 2. advanced publication advanced publication
technical specification product # mcots-c-28v-12-qt phone 1-888-567-9596 www.synqor.com doc.# 005-0005666 rev. 1 06/04/10 page 7 mcots-c-28v-12-qt output: 12v current: 7.0a figure 13: magnitude of incremental output impedance (z out = v out / i out ) for minimum, nominal, and maximum input voltage at full rated power. figure 14: magnitude of incremental forward transmission (ft = v out / v in ) for minimum, nominal, and maximum input voltage at full rated power. figure 15: magnitude of incremental reverse transmission (rt = i in / i out ) for minimum, nominal, and maximum input voltage at full rated power. figure 16: magnitude of incremental input impedance (z in = v in /i in ) for minimum, nominal, and maximum input voltage at full rated power. figure 17: test set-up diagram showing measurement points for input terminal ripple current (figure 9) and output voltage ripple (figure 10). dc/dc converter v source i c v out 0.0001 0.001 0.01 0.1 1 10 10 100 1,000 10,000 100,000 hz output impedance (ohms) 12vin 28vin 40vin 0.1 1 10 100 10 100 1,000 10,000 100,000 hz input impedance (ohms) 12vin 28vin 40vin -100 -80 -60 -40 -20 0 20 10 100 1,000 10,000 100,000 hz forward transmission (db) 12vin 28vin 40vin -30 -25 -20 -15 -10 -5 0 5 10 15 20 10 100 1,000 10,000 100,000 hz reverse transmission (db) 12vin 28vin 40vin 4.7 h source impedance 100 f, 0.2 ? esr electrolytic capacitor 15 f, 300m? esr tantalum capacitor 1 f ceramic capacitor figure 18: load current (5a/div) as a function of time (2ms/div and 100ms/div) when the converter attempts to turn on into a 10 m? short circuit. advanced publication advanced publication
technical specification product # mcots-c-28v-12-qt phone 1-888-567-9596 www.synqor.com doc.# 005-0005666 rev. 1 06/04/10 page 8 mcots-c-28v-12-qt output: 12v current: 7.0a figure a: various circuits for driving the on/off pin. figure b: internal on/off pin circuitry ttl 5v 50k 50k on/off v in( _ ) 100pf open collector enable circuit remote enable circuit direct logic drive negative logic (permanently enabled) on/off vin( _ ) on/off on/off vin( _ ) on/off 5v ttl/ cmos vin( _ ) vin( _ ) open this mil-cots converter series uses a two-stage power conversion topology. the frst 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 frst stage and the second stage switch at a fxed frequency for predictable emi performance. rectifcation of the transformers output is accomplished with synchronous rectifers. 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 effciency, even at very low output voltages and very high output currents. these converter 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 confguration. basic operation and features control features 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. remote sense( + ) (pins 7 and 5) : the sense( + ) inputs correct for voltage drops along the conductors that connect the converters 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(-) ] C [v sense(+) - v sense(-) ] < 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 converters 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. advanced publication advanced publication
technical specification product # mcots-c-28v-12-qt phone 1-888-567-9596 www.synqor.com doc.# 005-0005666 rev. 1 06/04/10 page 9 mcots-c-28v-12-qt output: 12v current: 7.0a 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. 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 r trim-down = ( 511 ) - 10.22 (k w ) d % where d% = v nominal C v desired x 100% v nominal 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 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. 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. it is not necessary for the user to add capacitance at the trim pin. the node is internally bypassed to eliminate noise. total dc variation of v out : for the converter to meet its full specifications, the maximum variation of the dc value of v out , due to both trimming and remote load voltage drops, should not be greater than that specified for the output voltage trim range. protection features 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 turn- on 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. 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. 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. r trim-up (k w ) where v out = nominal output voltage 511 _ 10.22 5.11 v out x ( 100+ d % ) 1.225 d % d % ) = ( _ figure c: trim graph for trim-up, trim down. 10 100 1,000 10,000 100,000 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 trim resistance (k ?) % increase in vout % decrease in vout 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 specifed output dc current-limit shutdown voltage, the converter turns off. the converter then enters a hiccup mode where it repeatedly turns on and off at a 5 hz (nominal) frequency with 5% duty cycle until the short circuit condition is removed. this prevents excessive heating of the converter or the load board. advanced publication advanced publication
technical specification product # mcots-c-28v-12-qt phone 1-888-567-9596 www.synqor.com doc.# 005-0005666 rev. 1 06/04/10 page 10 mcots-c-28v-12-qt output: 12v current: 7.0a application considerations figure d: typical application circuit (negative logic unit, permanently enabled). figure e: internal input filter diagram v i n external input filter trim v in( + ) i l oa d c l oa d v out(+ ) r trim-up or r trim-down v sense( + ) on/off v in( _ ) v out( _ ) v sense( _ ) electrolytic capacitor 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. 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 v in( + ) v in( _ ) c v out(+) v out(-) internal input filter converter advanced publication advanced publication
technical specification product # mcots-c-28v-12-qt phone 1-888-567-9596 www.synqor.com doc.# 005-0005666 rev. 1 06/04/10 page 11 mcots-c-28v-12-qt output: 12v current: 7.0a figure f: startup inhibit period (turn-on time not to scale) under-voltage lockout turn- on threshold on/off (neg logic) v out v in 200ms 200ms 200ms (typical start-up inhibit period) t 0 t 1 t 2 t on on on off off 9ms (turn on time) 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 ? 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 inhibit period is initiated at t 0 , t 1 , and t 2 : before time t 0 , 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. at time t 1 , the unit is disabled by the on/off pin, and it cannot be enabled again until the startup inhibit period has elapsed. when the on/off pin goes high after t 2 , 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, t b , is 100 oc. refer to the thermal derating curve, figure 5, 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, r th ba , 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 then be used to determine the maximum power the converter can dissipate for a given thermal condition: p max = t b - t a diss r th ba 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. advanced publication advanced publication
technical specification product # mcots-c-28v-12-qt phone 1-888-567-9596 www.synqor.com doc.# 005-0005666 rev. 1 06/04/10 page 12 mcots-c-28v-12-qt output: 12v current: 7.0a top view 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) 1 2 3 8 7 5 4 6 2.386 0.020 (60.6 0.5) 2.00 (50.8) 1.86 (47 .2) m3 th r eaded i nserts 4 places s ee notes 0.300 ( 7 .62) 0.600 (15.24) 0.5000.025 (12. 70.63) ov er al l height 0.2630.020 (6.680.5) 0.2530.020 (6.40.5) 0.180.010 (4 .570.25) side view 0.183.020 (4 .65)0.5 0.4680.020 (11.890.5) mechanical drawing C normal heatsink option notes 1) applied torque per screw should not exceed 6in-lb (0.7 nm). 2) baseplate flatness tolerance is 0.004" (.10mm) 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 C copper alloy; finish C 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. pin designations pin name function 1 vin(+) positive input voltage 2 on/off ttl input to turn converter on and off, referenced to vin(C), with internal pull up. 3 in rtn input return 4 out rtn output return 5 sense(C) negative remote sense 1 6 trim output voltage trim 2 7 sense(+) positive remote sense 3 8 vout(+) positive output voltage notes: 1) sense(C) should be connected to vout(C) 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. advanced publication advanced publication
technical specification product # mcots-c-28v-12-qt phone 1-888-567-9596 www.synqor.com doc.# 005-0005666 rev. 1 06/04/10 page 13 mcots-c-28v-12-qt output: 12v current: 7.0a 2.200 .020 [ 55.88 0.5 ] 1.536 .020 [ 39.01 0.5 ] .01 [0.2] overall height .500 .025 [12.7 0.63] .18 [ 4.6 ] see note 5 .15 [ 3.8 ] .30 [ 7.6 ] .45 [ 11.4 ] .60 [ 15.2 ] 8 7 6 1 2 3 .30 [ 7.6 ] .60 [ 15.2 ] 2.386 2.00 [ 50.8 ] .020 [ 60.6 0.5 ] bottomside clearance .020 .010 [0.51 0.25] 1.30 [ 33 ] .70 [ 17.8 ] .800 .020 [ 20.32 0.5 ] 2.07 [ ] .13 [ 3.2 ] 1 .02 [ 0.6 ] .183 .020 [ 4.65 0.5 ] .36 [ 9.1 ] 1.01 [ 25.7 ] 1.66 [ 42.2 ] top view bottom view 52.5 5 4 r .065 1,65 [ ] mechanical drawing C flanged heatsink option notes 1) 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 C copper alloy; finish C 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. pin designations pin name function 1 vin(+) positive input voltage 2 on/off ttl input to turn converter on and off, referenced to vin(C), with internal pull up. 3 in rtn input return 4 out rtn output return 5 sense(C) negative remote sense 1 6 trim output voltage trim 2 7 sense(+) positive remote sense 3 8 vout(+) positive output voltage notes: 1) sense(C) should be connected to vout(C) 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. advanced publication advanced publication
technical specification product # mcots-c-28v-12-qt phone 1-888-567-9596 www.synqor.com doc.# 005-0005666 rev. 1 06/04/10 page 14 mcots-c-28v-12-qt output: 12v current: 7.0a mil-cots 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 final electrical test 100% 25?c -55?c, +25?c, +100?c final visual inspection mil-std-2008 mil-cots qualifcation test name details # tested (# failed) consistent with mil-std-883f method consistent with mil-std-883f method 5005 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) mil-std-202, methods 201a & 213a humidity +85?c, 85% rh, 1000 hours, 2 minutes on/6 hours off 8 (0) method 1004.7 temperature cycling 500 cycles of -55?c to +100?c (30 minute dwell at each temperature 10 (0) method 1010.8 condition a solderability 15 pins 15 (0) method 2003 dmt -65?c to +110?c across full line and load specifcations in 5?c steps 7 (0) altitude 70,000 feet (21 km), see note 2 (0) note: a conductive cooling design is generally needed for high altitude applications because of naturally poor convective cooling at rare atmospheres. advanced publication advanced publication
technical specification product # mcots-c-28v-12-qt phone 1-888-567-9596 www.synqor.com doc.# 005-0005666 rev. 1 06/04/10 page 15 mcots-c-28v-12-qt output: 12v current: 7.0a warranty synqor offers a t wo ( 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. contact synqor for further information: phone : 978-849-0600 toll free : 888-567-9596 fax : 978-849-0602 e-mail : mqnbofae @synqor.com web : www.synqor.com address : 155 swanson road boxborough, ma 01719 usa example mcots-c-28v-12-qt-n-s not all combinations make valid part numbers, please contact synqor for availability. see product summary page for details. application notes a variety of application notes and technical white papers can be downloaded in pdf format from our website . ordering information/ part numbering patents 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 fled 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 family product input voltage output voltage package heatsink option screening level options mcots c: converter 28: 16-40v 28v: 9-40v 28ve: 9-70v 48: 34-75v 270: 155-425v 1r8: 3r3: 05: 07: 12: 15: 24: 28: 48: 1.8v 3.3v 5v 7v 12v 15v 24v 28v 48v qt: quarter brick n: f: normal threaded flanged s: s-grade m: m-grade [ ]: standard feature advanced publication advanced publication

▲Up To Search▲

Price & Availability of MCOTS-C-28V-12-QT-N-M

	To Download MCOTS-C-28V-12-QT-N-M Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .