1 slc100 1.2v rev c 11/2004 product: www.cdpoweronline.com 40 amp single output quarter brick dc/dc converter slc100 1.2v corporate: www.cdtechno.com corporate: www.cdtechno.com product: www.cdpoweronline.com industry standard footprint & size - 2.28 x 1.45 high efficiency wide input voltage range: 36 C 75vdc series output voltage: 1.0v, 1.2v, 1.5v, 1.8v, 2.0v, 2.5v, 3.3v, 5.0v & 12v output voltagetrim function remote sense for output compensation remote on/off control referenced to input side (positive or negative logic) output current limit no minimum load requirement the slc100 series is a 40 amp single output, low-profile dc-dc converter in an industry standard package of 2.28 x 1.45 x 0.40. the slc100 uses unique proprietary technologies to deliver ultra-high efficiencies and excellent thermal performance. it includes extensive control and protection features for maximum ? exibility and satis? es the power requirements for a whole range of applications with its input voltage range of 36-75 vdc and output voltages between 1.0vdc and 12.0vdc the power dissipation of the slc100 series is so low that a heat sink is not required. thermal derating curves are provided indicating maximum allowable output current versus air? ow and ambient temperature. the product features fast dynamic response characteristics and low output ripple critical for low voltage applications. slc dc-dc converter modules are certi? ed to ul/cul 60950, and vde en60950. it meets cispr22/ en55022/fcc15j class b specs for emi levels with external ? ltering. this high quality and highly reliable product is competitively priced and an ideal solution for distributed power, telecoms and datacom applications. iso9001 certified * note 1: maximum output current for smd models is 25a. nominal rated input output output current voltage voltage min rated model (v dc ) (v dc ) load(a) output (a) 1 slc100-2,11,20,29 48 1.2 0.0 40 1.30 80 product selection chart input current at rated load (a) (48vin) efficiency typical (%) smd models with position perfect tm interconnects isolation voltage of 2000 vdc fixed frequency operation ul/cul 60950 recognized (us & canada), vde en60950, basic insulation rating meets tnv-selv isolation requirements meets conducted emissions requirements of fcc class b and en55022 class b with external filter no heatsink required thermal shutdown input undervoltage lockout
2 slc100 1.2v rev c 11/2004 product: www.cdpoweronline.com absolute maximum ratings, all models parameter conditions min typ max units common electrical specifications, all models specifications are at t a = +25c, airflow = 300lfm (1.5m/s) at nominal input voltage unless otherwise specified. input voltage-operating input voltage-operating operating ambient temperature storage temperature output short circuit duration lead temperature (soldering, 10 sec max) continuous 75 v dc continuous transient (100 ms) 100 v dc -40 85 c c -40 +125 +300 c parameter conditions min typ max units input voltage range 36 48 75 v dc isolation input/output isolation voltage 2000 v dc capacitance input to output 2000 pf resistance input to output 10 m? features turn on time output to within 1% of vnom 5.00 ms remote sense compensation 5 % of v nom output voltage trim range -10 +10 % of v nom output over voltage protection +120 +140 % of v nom over temperature shutdown shutdown internal monitor point 135 c turn on internal monitor point 125 c input under voltage protection turn off 30.70 32.00 v dc turn on 33.30 34.50 v dc lockout hysteresis voltage 1.30 2.50 v dc on/off logic function logic low ion/off 360 a logic low von/off 0.4 v dc logic high ion/off 1.0 a logic high von/off open collector general switching frequency 200 khz mttf (per telcordia tr-332) 1,497,000 hrs common electrical specifications
3 slc100 1.2v rev c 11/2004 product: www.cdpoweronline.com mechanical (through hole) notes: general tolerance: .015 pin locations/diameters: .005 dimensions are in inches [millimeters] pin material: copper pin finish: matte tin over nickel converter weight: [30.8g] mechanical (smt) pin functions 1 +vin 2 remote on/off 3 -vin 4 -vout 5 - sense 6 trim 7 + sense 8 +vout interconnect functions 1 +vin 2 remote on/off 3 -vin 4 -vout 5 - sense 6 trim 7 + sense 8 +vout * interconnect co-planarity within 0.004 ul/tuv standards require a clearance greater than 0.04 between input and output for basic insulation. this should be considered if copper traces are used on the top side of the board under the con- verter unit. ferrite cores are considered part of the input/primary circuit. ul/tuv standards require a clearance greater than 0.04 between input and output for basic insulation. this should be considered if copper traces are used on the top side of the board under the con- verter unit. ferrite cores are considered part of the input/primary circuit. notes: general tolerance: .015 interconnect locations/ diameters: .005 dimensions are in inches [millimeters] pin material: copper pin finish: matte tin over nickel converter weight: [30.8g] .425 [10.80] .725 [18.42] 1.025 [26.04] 1.025 [26.04] .875 [22.23] .725 [18.42] .575 [14.61] .425 [10.80] .000 [0.00] .000 [0.00] 2.280 [57.91] 1.450 [36.83] .140 [3.56] 2.140 [54.36] .400 [10.16] .197 [5.00] 2x, ?.060 [1.52] 6x, ?.040 [1.02] bottom view (pin side) .052 [1.32] .037 [0.94] 2x, ?080 [2.03] 6x, ?.060 [1.52] 3 1 2 5 6 7 8 4 .425 [10.80] .725 [18.42] 1.025 [26.04] 1.025 [26.04] .875 [22.23] .725 [18.42] .575 [14.61] .425 [10.80] .000 [0.00] .000 [0.00] 2.280 [57.91] 1.450 [36.83] .140 [3.56] 2.140 [54.36] .400 [10.16] bottom view (pin side) .052 [1.32] .037 [0.94] 4 2x, ?.080 [2.03] 6x, ?.060 [1.52] 3 2 5 6 7 8 1
4 slc100 1.2v rev c 11/2004 product: www.cdpoweronline.com ordering information model number vout (vdc) pinout logic slc100 - 1 1.0 through hole positive slc100 - 2 1.2 through hole positive slc100 - 3 1.5 through hole positive slc100 - 4 1.8 through hole positive slc100 - 5 2.0 through hole positive slc100 - 6 2.5 through hole positive slc100 - 7 3.3 through hole positive slc100 - 8 5.0 through hole positive slc100 - 9 12.0 through hole positive slc100 - 10 1.0 smd positive slc100 - 11 1.2 smd positive slc100 - 12 1.5 smd positive slc100 - 13 1.8 smd positive slc100 - 14 2.0 smd positive slc100 - 15 2.5 smd positive slc100 - 16 3.3 smd positive slc100 - 17 5.0 smd positive slc100 - 18 12.0 smd positive model number vout (vdc) pinout logic slc100 - 19 1.0 through hole negative slc100 - 20 1.2 through hole negative slc100 - 21 1.5 through hole negative slc100 - 22 1.8 through hole negative slc100 - 23 2.0 through hole negative slc100 - 24 2.5 through hole negative slc100 - 25 3.3 through hole negative slc100 - 26 5.0 through hole negative slc100 - 27 12.0 through hole negative slc100 - 28 1.0 smd negative slc100 - 29 1.2 smd negative slc100 - 30 1.5 smd negative slc100 - 31 1.8 smd negative slc100 - 32 2.0 smd negative slc100 - 33 2.5 smd negative slc100 - 34 3.3 smd negative slc100 - 35 5.0 smd negative slc100 - 36 12.0 smd negative
5 slc100 1.2v rev c 11/2004 product: www.cdpoweronline.com figure 1 C remote sensing circuit output voltage trim the slc100s output voltage may be adjusted high or low by an amount indicated on the product data sheet. as shown in figure 2 , to raise the converters output voltage a resistor must be placed between the trim pin and +vout pin. figure 2 C trim up circuit remote sense operation when the load is physically distanced from the con- verter, the inductance of the power leads, and any by- pass conductance at the load, can result in increased phase shift in the converters feedback loop, causing instability. this situation can be eliminated by insert- ing bypass capacitors (c b ) from the outputs to the sense leads directly at the output pins. these capaci- tors de-couple any ac on the power lines and assure that only the dc voltage is sensed. when using remote sense with dynamic loads, the transient response at the point of load may be limited by the inductance present in the power lines. severe load steps may require the addition of a capacitor c l across the output lines. when the load demands an immediate increase in load current, this capacitor helps to supply a portion of the current and reduces the burden on the converter. in general, the line resistance, or load drop, between the output pins of the converter and load should be minimized. using remote sense, a large line resis- tance, with a regulated load voltage, will result in a higher output voltage at the output of the dc/dc converter. to prevent exceeding the converters output power limits, a higher output voltage will require a reduction in the maximum allowable output current in accordance with the voltage/current power relationship. to minimize the line resistance between the converter and the load, the converter should be placed as close to the load as possible. line resis- tance can further be decreased by using heavy gauge wire or by increasing the cross sectional area of the pc board traces. the remote sense feature of the slc100 can be used to compensate for voltage drops in the output power lines by sensing output voltage directly at the point of load. to enable this feature, connect the +sense and Csense pins to the +vout and Cvout pins, respective- ly, at the point in the circuit where the tightest regula- tion is required ( figure 1 ). the sense leads conduct very little current compared with the power leads and therefore provide a more accurate indication of load voltage for regulation purposes. this enables the converter to increase (or decrease) its output volt- age to compensate for any load distribution losses, allowing for a more precise load voltage. refer to the product data sheet for the maximum output voltage compensation range of the sense function. application notes if remote sensing is not desired then +sense and -sense must be tied to their respective outputs for proper operation. ? ?
6 slc100 1.2v rev c 11/2004 product: www.cdpoweronline.com remote on/off function figure 4 C remote on/off control circuit protective functions temperature shutdown the over temperature shutdown feature of the slc100 will cause the unit to shutdown at a typical pwb internal monitor point temperature of 135 o c. this protective feature is comprised of a thermistor in the units control loop. at a temperature of 135 o c this circuit will cause the pwm to go into an idle mode, resulting in no output from the converter and prevent- ing damage to the converter components. when the temperature of the unit drops below 125 o c the fault condition will clear and the converter will resume nor- mal operation. if the cause of the over temperature condition is not identi? ed and corrected the unit will continue to cycle on and off inde? nitely. input under-voltage shutdown the nominal input voltage for the slc100 is 48vdc. once turned on reducing the input voltage to 32.0 vdc nominal will shut down the device. at an input voltage less than 32.0v the under-voltage sensing circuit will send a signal to the pwm causing it to go into idle mode. this will result in no output from the converter, protecting the unit from a high input current condition. when the input voltage returns to a level above 33.3v the unit will return to normal operation. the unit will typically turn on at an input voltage of between 33.3v and 34.5v nominal as indicated on the product data sheet. this is due to hysterisis designed into the protective circuit to prevent excessive cycling of the converter. the slc100 is equipped with a primary on/off pin used to remotely turn the converter on or off via a system signal. the input is ttl open-collector and/or fet open-drain compatible. for the positive logic model a system logic low signal will turn the unit off. for negative logic models a system logic high signal will turn the converter off. for negative logic models where no control signal will be used the on/off pin should be connected directly to Cvin to ensure proper operation. for positive logic models where no control signal will be used the on/off pin should be left open. application notes the resistance value required to achieve the desired amount of positive/negative trim can be determined by referring to the trim table for each model. if trim- ming is not desired then the trim pin may be left open. in addition to the resistor values provided in the trim tables, the following equations can be use to calculate the required resistor value for a desired output voltage. these equations apply for the 1.5v and above models. for 1.2v models the trim tables must be used. remote on/off control function figure 3 C trim down circuit to lower the converter output voltage a resistor must be placed between the trim pin and -vout pin as shown in figure 3 . 5.11v (100+?%) - 511 - 10.22 k? v ref ?% ?% vref=1.225 -10.22 k? [ [ r trim_down = 5.11 ?% ) ( r trim_up = out
7 slc100 1.2v rev c 11/2004 product: www.cdpoweronline.com brick wall current limiting to protect against fault or short-circuit conditions on the output, each module is equipped with current-limit- ing circuitry designed to provide continuous protection. after reaching the current limit point (typically 20% above the rated output current), the voltage will range between its rated value and zero, depending upon the amount of overload. the unit will remain in operation continuously during this period down to a short-circuit condition. once the short or overload has been elimi- nated, the output voltage will return to normal without cycling the input power. output over-voltage protection the slc100 has an output over voltage protection (ovp) circuit which monitors its own output voltage. if the output voltage of the converter exceeds between 120% and 140% of the nominal rating, the ovp circuit will shut down the converter. once the ovp has been tripped the unit will need to be reset by cycling the input power or by toggling the on/off power before normal operation can resume. slc100 units with a non-latching ovp feature are available on request. please contact the factory for further details. safety the slc100 meets safety requirements per ul/cul 60950 and vde en60950, basic insulation rating. emc/emi considerations analysis pending. performance characterization thermal derating maximum output current vs. ambient temperature at various air? ow rates has been determined for each model of the slc100. each model was analyzed over an ambient temperature range of 0 to 85 o c and at air ? ows up to 700lfm. temperature limits for thermal derating curves were 130 o c for semiconductor junction temperature and 130 o c for board temperature. ef? ciency performance ef? ciency data for each model was determined as a function of both load current and input voltage. ef? ciency vs. input voltage was measured at full load, ambient temperature of 25 o c and air? ow of 300lfm. ef? ciency vs. load current was measured at 25 o c, a nominal input voltage of 48vdc and air? ow of 300lfm. graphs are provided for each model in their respective section. start-up, on/off and transient response for each model, waveforms are provided showing output voltage response and timing of input voltage power up/down, remote on/off state change and load current transient responses. output voltage transient responses are provided for step load changes of 50% to 75% & 75% to 50% of rated load current. waveforms for each model are provided in their respective section. application notes
8 slc100 1.2v rev c 11/2004 product: www.cdpoweronline.com slc100 1.2vout electrical specifications specifications are at t a = +25c, airflow = 300lfm (1.5m/s) at nominal input voltage unless otherwise specified. trim up trim down trim vout rtrim trim vout rtrim (%) (vdc) (kohm) (%) (vdc) (kohm) 1 1.212 325.6 1 1.188 353.5 2 1.224 166.49 2 1.176 172.07 3 1.236 112.1 3 1.164 112.78 4 1.248 84.92 4 1.152 83.56 5 1.260 68.26 5 1.140 65.83 6 1.272 57.44 6 1.128 54.01 7 1.284 49.64 7 1.116 45.66 8 1.296 43.68 8 1.104 39.36 9 1.308 39.09 9 1.092 34.47 10 1.320 35.37 10 1.080 30.61 trim resistance values for 1.2v module * note 1: maximum output current for smd models is 25a. parameter conditions min typ max units input maximum input current full load; vin = 36vdc 1.70 a inrush charge vin = 75vdc 0.180 mc re? ected ripple current full load, 20mhz bandwidth 0.100 apk-pk input voltage ripple rejection full load (100hz-1khz) -30 db no load input current no load 55 ma disabled input current 3.0 ma recommended input fuse fast blow external fuse 7 a output voltage setpoint 1.182 1.2 1.218 vdc voltage range over all conditions of line, 1.164 1.236 vdc load and temperature line regulation 0.05 0.10 % of vnom load regulation 0.25 0.50 % of vnom output ripple 100 120 mvpk-pk output current range 0 40 1 a output current limit inception 42 46 a ef? ciency 80 % transient response 50% to 75% load step at di/dt =0.1 a/s;cext=none peak deviation 120 mv settling time 300 s external load capacitance 50,000 f rated power 48 w electrical specifications
9 slc100 1.2v rev c 11/2004 product: www.cdpoweronline.com performance curves: slc100 (1.2 vout) turn off time (v in to v out ) turn on time (v in to v out ) ef? ciency vs. input voltage @ t a = +25 0 c; i o = 40a ef? ciency vs. output current @ t a = +25 0 c; vin = 48vdc primary on time (primary remote to v out ) primary off time (primary remote to v out ) time scale = 1ms/div v out v in v out v in time scale = 50us/div time scale = 1ms/div on/off v out time scale = 50us/div v out v out on/off
10 slc100 1.2v rev c 11/2004 product: www.cdpoweronline.com performance curves: slc100 (1.2 vout) continued transient response, 50% to 75% load step transient response, 75% to 50% load step for additional technical support or ordering information please visit our website at www.cdpoweronline.com or call your local representative. power electronics division, americas 3400 e britannia drive, tucson, arizona 85706 tel: 800.547.2537 fax: 520.295.4197 c&d technologies, emea/asia/paci? c milton keynes mk14 5bu uk tel: +44 (0)1908 615232 fax: +44 (0)1908 617545 any data, prices, descriptions or speci? cations presented herein are subject to revision by c&d technologies, inc. without not ice. while such information is believed to be accurate as indicated herein, c&d technologies, inc. makes no warranty and hereby disclaims all warranties, express or implied, with regard to the accuracy or complete- ness of such information. further, because the product(s) featured herein may be used under conditions beyond its control, c&d technologies, inc. hereby disclaims all warranties, either express or implied, concerning the ? tness or suitability of such product(s) for any particular use or in an y speci? c application or arising from any course of dealing or usage of trade. the user is solely responsible for determining the suitability of the product(s) featured herein fo r users intended purpose and in users speci? c application. c&d technologies, inc. does not warrant or recommend that any of its products be used in any life support or avia tion or aerospace applications. output current (a) vs. ambient temperature (deg c) @ vin = 48 vdc. 0 4 8 12 16 20 24 28 32 36 40 -35 -25 -15 -5 5 15 25 35 45 55 65 75 85 ambient temperature (deg c) output current (a ) nc 100 lf m 200 lf m 300 lf m 400 lf m 500 lf m 600 lf m 700 lf m voltage scale = 100mv/div; time scale = 100us/div di/dt = 0.2a/us voltage scale = 100mv/div; time scale = 100us/div di/dt = 0.2a/us v out i out i out v out
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