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1 wpa50 rev d th/smt 8/2004 product: www.cdpoweronline.com 18 amp single output eighth brick dc/dc converter wp wp wp wp wp a50 a50 a50 a50 a50 corporate: www.cdtechno.com corporate: www.cdtechno.com product: www.cdpoweronline.com z industry standard footprint & size - 2.3? x 0.9? x 0.37? (58.42mm x 22.88mm x 9.4mm) z high efficiency - up to 90% z wide input voltage range: 36 ? 75v dc z output voltages: 1.2 v, 1.5v, 1.8v, 2.2v, 2.5v, 3.3v & 5.0v z through hole and smt position perfect tm models z output trim function z remote output sense z remote on/off (positive or negative logic) z output overcurrent protection z input side ?l? filter z no minimum load required z isolation voltage of 2000 v dc z high reliability z fixed frequency operation z z z z z safety per ul/cul 60950 and vde to en 60950. ce approved. basic insulation. tnv-selv isolation requirements z z z z z c&d technologies, power electronics division is iso9001:2000 certified z no heatsinks z low profile and low weight z thermal shutdown z undervoltage lockout the wpa50 series is a 50 watt single output, low-profile dc-dc converter in an industry standard package of 2.3? x 0.9? x 0.37? (58.42mm x 22.86mm x 9.4mm). the wpa50 uses unique proprietary technologies to deliver ultra- high efficiencies and excellent thermal performance. it includes extensive control and protection features for maximum flexibility and provides a versatile solution for a whole range of applications with its input voltage range of 36-75 v dc and output voltages between 1.2v dc and 5.0v dc . the power dissipation of the wpa50 series is so low that a heat sink is not required. the product features fast dynamic response characteristics and low output ripple critical for low voltage applications. wpa dc-dc converter modules are certified to ul/cul 60950, and vde to en60950. it is designed to meet cispr22/en55022/fcc15j class b specs for emi levels with external filtering. this high quality and highly reliable product is competitively priced and an ideal solution for distributed power, telecoms and datacom applications. nominal rated input output output current input efficiency voltage voltage min rated current (%) model (v dc )(v dc ) load(a) output (a) rated load (a) min wpa50r48s012 48 1.2 0.0 18 0.58 80 wpa50r48s015 48 1.5 0.0 18 0.70 82 wpa50r48s018 48 1.8 0.0 18 0.80 85 wpa50r48s022 48 2.2 0.0 18 0.99 85 wpa50r48s025 48 2.5 0.0 18 1.11 85 wpa50r48s033 48 3.3 0.0 15 1.20 88 wpa50r48s050 48 5.0 0.0 10 1.17 90 product selection chart output short-circuit duration continuous internal power dissipation 8 watts lead temperature (soldering, 10 seconds max) +300c continuous input voltage 75 vdc storage temperature +125c input to output isolation 2000 v dc absolute maximum ratings
product: www.cdpoweronline.com wpa50 rev d th/smt 8/2004 2 specifications, all models specifications are at t a = +25c, airflow = 300lfm (1.5m/s) at nominal input voltage unless otherwise specified. isolation input/output isolat ion voltage 2000 2250 v dc resistance 10 m ? capacitance 1.5 nf leakage current 240 vrms, 50hz 100 a output rated power wp a50r48s012 22 w wpa50r48s015 27 w wpa50r48s018 33 w wpa50r48s022 40 w wpa50r48s025 45 w wpa50r48s033 50 w wpa50r48s050 50 w voltage setpoint accuracy 1.0 1.5 % of v nom output voltage trim range -5.0 +8.0 % of v nom temperature coefficient 0.002 0.005 %/c output voltage regulation line regulation vin = 36v - 75v , iout = max 0.30 0.50 % load regulation vin = 48v, iout = 0-max 0.30 0.60 % ripple & noise (note 1) vin = 48v, < 20mhz bandwidth 75 mvp-p transient response step change in output current (50%-100% step @ 0.2a/ ) 1.2 - 2.5 vout vin = 48v 8 % of v nom 3.3 - 5.0 vout vin = 48v 6 % of v nom turn-on time vin = 48v 200 500 ms remote sense compensation 8% overcurrent protection vin = 48v 105 140 % general switching frequency 380 400 420 khz mttf per ml-hdbk-217 circuit stress method ground benign ta = +25 tbd hrs operating ambient temperature -40 85 c input output parameter conditions min typ max units input voltage range vin = 48v, io=i rated 36 48 75 v dc reflected ripple current vin = 48v, io=i rated 450 600 mapk-pk inrush charge 42 c maximum input current vin=36v 1.2 vout 0.75 a 1.5 vout 0.93 a 1.8 vout 1.10 a 2.2 vout 1.31 a 2.5 vout 1.50 a 3.3 vout 1.60 a 5.0 vout 1.55 a input control temperature shutdown 115 c temperature hysteresis 5c quiescent standby current vin = 48v 3 4 ma power dissipation no load, remote on/off disabled, vin = 48vdc 2.00 w undervoltage shutdown 31.50 32.5 35.0 v undervoltage hysteresis 0.50 2 3.00 v note 1 : measured at 20 mhz bandwidth across a 10 f multi layer ceramic capacitor located approximately 1? from output terminals. s
3 wpa50 rev d th/smt 8/2004 product: www.cdpoweronline.com .370 [ 9.40 ] max a .135 [ 3.43 ] . 900 . 0 1 0 [22.88 .25 ] 2. 300 . 0 1 0 [ 58.42 .25 ] .188 [ 4.78 ] . 000 [0.00 ] . 000 [ 0.00 ] .1 50 [ 3.81 ] .4 50 [ 11.43 ] .7 50 [19.05 ] . 750 [ 19.05 ] . 600 [ 15.24 ] . 450 [ 11.43 ] .300 [ 7.62 ] .150 [3.81 ] . 150 [ 3.81 ] 2.150 [ 54.61 ] 1 2 3 8 4 7 6 5 b o tt o m vie w ( pin side ) ? .080 [ 2.03 ] 2 plcs ? .062 [ 1.57 ] 2 plcs ? .040 [1.02] 6 plc s ? .060 [ 1.52 ] 6 plc s dimensions are in inches [mm ] mechanical (through hole) to find model number model numbers part numbers wpa50r48s012 6064958 wpa50r48s015 6064959 wpa50r48s018 6064960 wpa50r48s022 6064961 wpa50r48s025 6064962 wpa50r48s033 6064963 wpa50r48s050 6064964 wpa50r48s012-1 6064967 wpa50r48s015-1 6064968 wpa50r48s018-1 6064969 wpa50r48s022-1 6064970 wpa50r48s025-1 6064971 wpa50r48s033-1 6064972 wpa50r48s050-1 6064973 ordering information (through hole) wpa50r48s y - device family 50 watt, single output, eighth brick, 48vdc input range model number selected from product selection chart (above) y = 012 = 1.2v, 015 = 1.5v, 018 = 1.8v, 022 = 2.2v, 025 = 2.5v, 033 = 3.3v, 050 - 5.0v, remote on/off logic no number = positive logic 1 = negative logic 1 +vin 2 remote on/off 3 -vin 4 -vout 5 - sense 6 trim 7 + sense 8 +vout pin functions notes: pin placement tolerance: +.010 pin material: copper pin finish: matte tin over nickel converter weight: [16g]
product: www.cdpoweronline.com wpa50 rev d th/smt 8/2004 4 .370 [9.40] max .135 [3.43] .900 .010 [22.88 .25] 2.300 .010 [58.42 .25] .000 [0.00] .000 [0.00] .150 [3.81] .450 [11.43] .750 [19.05] .750 [19.05] .600 [15.24] .450 [11.43] .300 [7.62] .150 [3.81] .150 [3.81] 2.150 [54.61] 4 bottom view (pin side) ?.080 [2.03] 2 plcs ?.060 [1.52] 6 plcs dimensions are in inches [millimeters] mechanical (smt) to find model number model numbers part numbers WPA50R48S012-2 WPA50R48S012-2 wpa50r48s015-2 wpa50r48s015-2 wpa50r48s018-2 wpa50r48s018-2 wpa50r48s022-2 wpa50r48s022-2 wpa50r48s025-2 wpa50r48s025-2 wpa50r48s033-2 wpa50r48s033-2 wpa50r48s050-2 wpa50r48s050-2 wpa50r48s012-3 wpa50r48s012-3 wpa50r48s015-3 wpa50r48s015-3 wpa50r48s018-3 wpa50r48s018-3 wpa50r48s022-3 wpa50r48s022-3 wpa50r48s025-3 wpa50r48s025-3 wpa50r48s033-3 wpa50r48s033-3 wpa50r48s050-3 wpa50r48s050-3 ordering information (smt) wpa50r48s y - device family 50 watt, single output, eighth brick, 48vdc input range model number selected from product selection chart (above) y = 012 = 1.2v, 015 = 1.5v, 018 = 1.8v, 022 = 2.2v, 025 = 2.5v, 033 = 3.3v, 050 - 5.0v, remote on/off logic 2 = positive logic, smt 3 = negative logic, smt 1 +vin 2 remote on/off 3 -vin 4 -vout 5 - sense 6 trim 7 + sense 8 +vout pin functions notes: pin placement tolerance: +.010 pin material: copper pin finish: matte tin over nickel with tin coating on contact surface converter weight: [16g] * pin co-planarity within 0.004?
5 wpa50 rev d th/smt 8/2004 product: www.cdpoweronline.com wpa50 + sense - sense trim + vout - vout + vin on/off - vin (top view) load c l c b c b figure 1 ? remote sensing circuit output voltage trim the wpa50?s 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 converter?s output voltage a resistor must be placed between the trim pin and +vout pin. wpa50 + sense - sense trim + vout - vout + vin on/off - vin (top view) load r t figure 2 ? trim up circuit to lower the converter output voltage a resistor must be placed between the trim pin and -vout pin as shown in figure 3 . wpa50 + sense - sense trim + vout - vout + vin on/off - vin (top view) load r t figure 3 ? trim down circuit 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 trimming is not desired then the trim pin may be left unconnected. remote sense the remote sense feature of the wpa50 can be used to compen- sate 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 ?sense pins to the +vout and ?vout pins, respectively, at the point in the circuit where the tightest regulation 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 voltage 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. in general, the line resistance, or load drop, between the output pins of the converter and load should be minimized. a large line resistance, with a regulated load voltage, will result in a higher output voltage at the converter output pins, +vout and -vout. to prevent exceeding the converter?s 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 con- verter and load, the converter should be placed as close to the load as possible. line resistance can further be decreased by using heavy gauge wire or increasing the pc board voltage bus cross section. 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. when the load is physically distanced from the converter, the inductance of the power leads, and any bypass conductance at the load, can result in increased phase shift in the converter?s feedback loop, causing instability. this situation can be elimi- nated by inserting bypass capacitors (c b ) from the outputs to the sense leads directly at the output pins. these capacitors provide ac feedback, removing the long power lines from the converter?s feedback loop. if remote sensing is not desired then +sense and -sense must be tied to their respective outputs for proper operation. operation if +sense and -sense are not connected in this manner the ouput voltage could drift beyond the nominal range.
product: www.cdpoweronline.com wpa50 rev d th/smt 8/2004 6 remote on/off function wpa50 + sense - sense trim + vout - vout + vin on/off - vin (top view) control signal figure 4 ? remote on/off control circuit protective functions temperature shutdown the over temperature shutdown feature of the wpa50 will cause the unit to shutdown at a typical pwb temperature of 120 0 c. this protective feature is comprised of a thermistor in the unit control loop. at a temperature of 120 0 c this circuit will cause the pwm to go into an idle mode, resulting in no output from the converter and preventing damage to the converter components. when the temperature of the unit drops below 120 0 c the fault condition will clear and the converter will resume normal operation. if the cause of the over temperature condition is not identified and corrected the unit will continue to cycle on and off. input under-voltage shutdown the nominal input voltage for the wpa50 is 48vdc. at an input voltage of 32.5vdc nominal the unit will shutdown on an input under-voltage condition. at an input voltage less than 32.5v 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 32.5v the unit will return to normal operation. the unit will typically turn on at an input voltage of 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. over-current protection to protect against fault or short-circuit conditions on the output, each module is equipped with current- limiting circuitry designed to provide continuous protection. after reaching the current limit point (typi- cally 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 eliminated, the output voltage will return to normal without cycling the input power. safety the wpa50 meets safety requirements per ul/cul 60950 and vde to en60950. basic insulation. meets tnv-selv isolation requirements. emc considerations analysis pending. performance characterization thermal derating maximum output current vs. ambient temperature at various airflow rates has been determined for each model of the wpa50. each model was analyzed over an ambient temperature range of 0 to 85 0 c and at air flows up to 600lfm. in each case, the maximum load current is defined as the point at which a known component reaches its individual temperature limit. efficiency performance efficiency data for each model was determined as a function of both load current and input voltage. efficiency vs. input voltage was measured at full load, ambient temperature of 25 0 c and airflow of 300lfm. efficiency vs. load current was measured at 25 0 c, a nominal input voltage of 48vdc and airflow 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 to 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% - 100% & 100% - 50% of rated load current. waveforms for each model are provided in their respective section. the wpa50 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 ?vin to ensure proper operation. for positive logic models where no control signal will be used the on/off pin should be left unconnected.
product: www.cdpoweronline.com wpa50 rev d th/smt 8/2004 7 turn off time (v in to v out ) turn on time (v in to v out ) v in v out v in v out time scale = 50 s/div time scale = 50ms/div model wpa50r48050 performance curves: model wpa50r48050 efficiency vs. input voltage @ t a = +25 0 c; i o = 10a 88.0 88.5 89.0 89.5 90.0 90.5 91.0 91.5 92.0 36 39 42 45 48 51 54 57 60 63 66 69 72 75 efficiency (%) input voltage (vdc) 0 10 20 30 40 50 60 70 80 90 100 012345678910 efficiency vs. output current @ t a = +25 0 c; vin = 48vdc efficiency (%) output current (a) primary on time (primary remote to v out ) primary off time (primary remote to v out ) time scale = 1ms/div on/off v out v out on/off time scale = 100 s/div
product: www.cdpoweronline.com wpa50 rev d th/smt 8/2004 8 model wpa50r48050 (continued) transient response, 50% to 100% load step transient response, 100% to 50% load step v out i out i out v out voltage scale = 200mv/div; time scale = 100 s/div di/dt = 0.2a/ s voltage scale = 20mv/div; time scale = 50 s/div di/dt = 0.2a/ s performance curves: model wpa50r48050 (continued) vout (vdc) % vnom trim resistance (kohm) 5.0000 0.0 - 5.0250 0.5 3678.2 5.0500 1.0 1526.7 5.0750 1.5 920.7 5.1000 2.0 634.9 5.1250 2.5 466.3 5.1500 3.0 356.6 5.1750 3.5 297.0 5.2000 4.0 220.2 5.2250 4.5 175.2 5.2500 5.0 139.4 5.2750 5.5 110.5 5.3000 6.0 85.8 5.3250 6.5 65.3 5.3500 7.0 47.7 5.3750 7.5 32.4 5.4000 8.0 19.0 trim up table vout (vdc) % vnom trim resistance (kohm) 5.0000 0.0 - 4.9750 0.5 792.00 4.9500 1.0 297.19 4.9250 1.5 133.09 4.9000 2.0 50.49 trim down table
product: www.cdpoweronline.com wpa50 rev d th/smt 8/2004 9 0 10 20 30 40 50 60 70 80 90 100 0.0 1.5 3.0 4.5 6.0 7.5 9.0 10.5 12.0 13.5 15.0 model wpa50r48033 performance curves: model wpa50r48033 efficiency vs. output current @ t a = +25 0 c; vin = 48vdc efficiency (%) output current (a) 85.5 86.0 86.5 87.0 87.5 88.0 36 39 42 45 48 51 54 57 60 63 66 69 72 75 efficiency vs. input voltage @ t a = +25 0 c; i o = 15a input voltage (vdc) efficiency (%) primary on time (primary remote to v out ) time scale = 1ms/div v out on/off primary off time (primary remote to v out ) v out on/off time scale = 100 s/div turn off time (v in to v out ) time scale = 50 s/div turn on time (v in to v out ) time scale = 50ms/div v in v out v in v out
product: www.cdpoweronline.com wpa50 rev d th/smt 8/2004 10 performance curves: model wpa50r48033 (continued) model wpa50r48033 (continued) transient response, 50% to 100% load step transient response, 100% to 50% load step voltage scale = 100mv/div; time scale = 100 s/div di/dt = 0.2a/ s voltage scale = 100mv/div; time scale = 200 s/div di/dt = 0.2a/ s i out v out i out v out vout (vdc) % vnom trim resistance (kohm) 3.3000 0.0 - 3.3165 0.5 2434.5 3.3330 1.0 947.3 3.3495 1.5 572.8 3.3660 2.0 399.4 3.3825 2.5 300.0 3.3990 3.0 234.7 3.4155 3.5 189.9 3.4320 4.0 155.7 3.4485 4.5 130.3 3.4650 5.0 109.5 3.4815 5.5 92.9 3.4980 6.0 79.0 3.5145 6.5 67.3 3.5310 7.0 57.3 3.5475 7.5 48.6 3.5640 8.0 41.1 trim up table vout (vdc) % vnom trim resistance (kohm) 3.3000 0.0 - 3.2835 0.5 691.85 3.2670 1.0 357.20 3.2505 1.5 225.10 3.2340 2.0 155.89 3.2175 2.5 111.17 3.2010 3.0 79.55 3.1845 3.5 57.40 3.1680 4.0 40.37 3.1515 4.5 27.26 3.1350 5.0 16.52 trim down table
product: www.cdpoweronline.com wpa50 rev d th/smt 8/2004 11 performance curves: model wpa50r48025 efficiency vs. input voltage @ t a = +25 0 c; i o = 18a efficiency vs. output current @ t a = +25 0 c; vin = 48vdc model wpa50r48025 0.00 10.00 20.00 30.00 40.00 50.00 60.00 70.00 80.00 90.00 100.00 0.0 1.8 3.6 5.4 7.2 9.0 10.8 12.6 14.4 16.2 18.0 efficiency (%) output current (a) input voltage (vdc) 83.50 84.00 84.50 85.00 85.50 86.00 86.50 36 39 42 45 48 51 54 57 60 63 66 69 72 75 efficiency (%) turn on time (v in to v out ) v out v in time scale = 50ms/div turn off time (v in to v out ) v out v in time scale = 100 s/div primary on time (primary remote to v out ) time scale = 2ms/div on/off v out primary off time (primary remote to v out ) time scale = 100 s/div v out on/off
product: www.cdpoweronline.com wpa50 rev d th/smt 8/2004 12 performance curves: model wpa50r48025 (continued) model wpa50r48025 transient response, 50% to 100% load step voltage scale = 100mv/div; time scale = 100 s/div di/dt = 0.2a/ s i out v out transient response, 100% to 50% load step voltage scale = 50mv/div; time scale = 200 s/div di/dt = 0.2a/ s v out i out trim up table vout (vdc) % vnom trim resistance (kohm) 2.5000 0.0 - 2.4875 0.5 456.0 2.4750 1.0 283.0 2.4625 1.5 191.0 2.4500 2.0 139.0 2.4375 2.5 104.0 2.4250 3.0 79.0 2.4125 3.5 60.0 2.4000 4.0 46.0 2.3875 4.5 34.0 2.3750 5.0 26.0 trim down table vout (vdc) % vnom trim resistance (kohm) 2.5000 0.0 - 2.5125 0.5 1600.0 2.5250 1.0 909.0 2.5375 1.5 459.0 2.5500 2.0 248.0 2.5625 2.5 207.0 2.5750 3.0 151.9 2.5875 3.5 118.7 2.6000 4.0 93.2 2.6125 4.5 75.2 2.6250 5.0 59.5 2.6375 5.5 48.5 2.6500 6.0 38.4 2.6625 6.5 30.8 2.6750 7.0 24.1 2.6875 7.5 18.3 2.7000 8.0 13.5
13 wpa50 rev d th/smt 8/2004 product: www.cdpoweronline.com performance curves: model wpa50r48022 83.50 84.00 84.50 85.00 85.50 86.00 36 39 42 45 48 51 54 57 60 63 66 69 72 75 efficiency (%) efficiency vs. input voltage @ t a = +25 0 c; i o = 18a model wpa50r48022 efficiency vs. output current @ t a = +25 0 c; vin = 48vdc output current (a) input voltage (vdc) 0.00 10.00 20.00 30.00 40.00 50.00 60.00 70.00 80.00 90.00 100.00 0.0 1.8 3.6 5.4 7.2 9.0 10.8 12.6 14.4 16.2 18.0 efficiency (%) turn on time (v in to v out ) v out v in time scale = 50ms/div turn off time (v in to v out ) v out v in time scale = 100 s/div primary on time (primary remote to v out ) time scale = 5ms/div on/off v out primary off time (primary remote to v out ) time scale = 100 s/div v out on/off
product: www.cdpoweronline.com wpa50 rev d th/smt 8/2004 14 performance curves: model wpa50r48022 (continued) transient response, 50% to 100% load step model wpa50r48022 voltage scale = 100mv/div; time scale = 100 s/div di/dt = 0.2a/ s v out i out transient response, 100% to 50% load step voltage scale = 100mv/div; time scale = 200 s/div di/dt = 0.2a/ s v out i out vout (vdc) % vnom trim resistance (kohm) 2.2000 0.0 - 2.2110 0.5 915.0 2.2220 1.0 696.5 2.2330 1.5 325.5 2.2440 2.0 205.5 2.2550 2.5 149.0 2.2660 3.0 113.0 2.2770 3.5 88.0 2.2880 4.0 71.0 2.2990 4.5 56.5 2.3100 5.0 46.5 2.3210 5.5 38.0 2.3320 6.0 31.0 2.3430 6.5 25.0 2.3540 7.0 20.5 2.3650 7.5 16.0 2.3760 8.0 12.5 trim up table vout (vdc) % vnom trim resistance (kohm) 2.2000 0.0 - 2.1890 0.5 645.5 2.1780 1.0 358.0 2.1670 1.5 238.0 2.1560 2.0 475.7 2.1450 2.5 134.2 2.1340 3.0 106.7 2.1230 3.5 84.8 2.1120 4.0 69.5 2.1010 4.5 57.2 2.0900 5.0 46.8 trim down table
product: www.cdpoweronline.com wpa50 rev d th/smt 8/2004 15 model wpa50r48018 efficiency vs. output current @ t a = +25 0 c; vin = 48vdc efficiency vs. input voltage @ t a = +25 0 c; i o = 18a output current (a) input voltage (vdc) 82.50 83.00 83.50 84.00 84.50 85.00 85.50 86.00 36 39 42 45 48 51 54 57 60 63 66 69 72 75 efficiency (%) 0.00 10.00 20.00 30.00 40.00 50.00 60.00 70.00 80.00 90.00 100.00 0.0 1.8 3.6 5.4 7.2 9.0 10.8 12.6 14.4 16.2 18.0 efficiency (%) turn on time (v in to v out ) v out v in time scale = 50ms/div turn off time (v in to v out ) v out v in time scale = 100 s/div primary on time (primary remote to v out ) time scale = 10ms/div primary off time (primary remote to v out ) time scale = 100 s/div v out on/off performance curves: model wpa50r48018 (continued) v out on/off
product: www.cdpoweronline.com wpa50 rev d th/smt 8/2004 16 performance curves: model wpa50r48018 (continued) model wpa50r48018 transient response, 50% to 100% load step voltage scale = 100mv/div; time scale = 100 s/div di/dt = 0.2a/ s v out i out transient response, 100% to 50% load step voltage scale = 100mv/div; time scale = 200 s/div di/dt = 0.2a/ s v out i out trim up table trim down table vout (vdc) % vnom trim resistance (kohm) 1.8000 0.0 - 1.8090 0.5 435.5 1.8180 1.0 215.0 1.8270 1.5 137.0 1.8360 2.0 95.5 1.8450 2.5 71.0 1.8540 3.0 55.5 1.8630 3.5 44.0 1.8720 4.0 36.0 1.8810 4.5 29.5 1.8900 5.0 24.0 1.8990 5.5 20.0 1.9080 6.0 16.0 1.9170 6.5 13.0 1.9260 7.0 10.5 1.9350 7.5 8.5 1.9440 8.0 6.0 vout (vdc) % vnom trim resistance (kohm) 1.8000 0.0 - 1.7910 0.5 939 1.7820 1.0 459 1.7730 1.5 299 1.7640 2.0 217 1.7550 2.5 169 1.7460 3.0 138 1.7370 3.5 112 1.7280 4.0 95 1.7190 4.5 82 1.7100 5.0 72
product: www.cdpoweronline.com wpa50 rev d th/smt 8/2004 17 performance curves: model wpa50r48015 model wpa50r48015 efficiency vs. output current @ t a = +25 0 c; vin = 48vdc efficiency vs. input voltage @ t a = +25 0 c; i o = 18a output current (a) input voltage (vdc) 80.50 81.00 81.50 82.00 82.50 83.00 83.50 84.00 36 39 42 45 48 51 54 57 60 63 66 69 72 75 efficiency (%) 0.00 10.00 20.00 30.00 40.00 50.00 60.00 70.00 80.00 90.00 100.00 0.0 1.8 3.6 5.4 7.2 9.0 10.8 12.6 14.4 16.2 18.0 efficiency (%) turn on time (v in to v out ) time scale = 50ms/div v out v in turn off time (v in to v out ) v in v out time scale = 50 s/div primary on time (primary remote to v out ) time scale = 1ms/div v out on/off primary off time (primary remote to v out ) time scale = 100 s/div v out on/off
product: www.cdpoweronline.com wpa50 rev d th/smt 8/2004 18 performance curves: model wpa50r48015 (continued) model wpa50r48015 transient response, 50% to 100% load step voltage scale = 100mv/div; time scale = 100 s/div di/dt = 0.2a/ s transient response, 100% to 50% load step voltage scale = 100mv/div; time scale = 100 s/div di/dt = 0.2a/ s v out i out v out i out trim up table trim down table vout (vdc) % vnom trim resistance (kohm) 1.5000 0.0 - 1.5075 0.5 620.0 1.5150 1.0 381.0 1.5225 1.5 158.0 1.5300 2.0 82.5 1.5375 2.5 56.5 1.5450 3.0 41.0 1.5525 3.5 30.5 1.5600 4.0 23.5 1.5675 4.5 18.5 1.5750 5.0 14.5 1.5825 5.5 11.5 1.5900 6.0 9.0 1.5975 6.5 6.5 1.6050 7.0 5.5 1.6125 7.5 4.0 1.6200 8.0 3.0 vout (vdc) % vnom trim resistance (kohm) 1.5000 0.0 - 1.4925 0.5 389.5 1.4850 1.0 271.0 1.4775 1.5 208.5 1.4700 2.0 166.5 1.4625 2.5 138.5 1.4550 3.0 117.0 1.4475 3.5 100.5 1.4400 4.0 88.0 1.4325 4.5 78.5 1.4250 5.0 69.5
19 wpa50 rev d th/smt 8/2004 product: www.cdpoweronline.com performance curves: model wpa50r48012 model wpa50r48012 efficiency vs. output current @ t a = +25 0 c; vin = 48vdc efficiency vs. input voltage @ t a = +25 0 c; i o = 18a output current (a) input voltage (vdc) 80.50 81.00 81.50 82.00 82.50 83.00 83.50 84.00 36 39 42 45 48 51 54 57 60 63 66 69 72 75 efficiency (%) 0.00 10.00 20.00 30.00 40.00 50.00 60.00 70.00 80.00 90.00 100.00 0.0 1.8 3.6 5.4 7.2 9.0 10.8 12.6 14.4 16.2 18.0 efficiency (%) turn on time (v in to v out ) v out v in time scale = 50ms/div turn off time (v in to v out ) v out v in time scale = 100 s/div primary on time (primary remote to v out ) time scale = 10ms/div v out on/off primary off time (primary remote to v out ) v out on/off time scale = 100 s/div
product: www.cdpoweronline.com wpa50 rev d th/smt 8/2004 20 performance curves: model wpa50r48012 (continued) model wpa50r48012 trim up table v out i out voltage scale = 50mv/div; time scale = 50 s/div di/dt = 0.2a/ s transient response, 100% to 50% load step voltage scale = 50mv/div; time scale = 200 s/div di/dt = 0.2a/ s v out i out transient response, 50% to 100% load step trim down table vout (vdc) % vnom trim resistance (kohm) 1.200 0.0 - 1.206 0.5 159.0 1.212 1.0 98.0 1.218 1.5 68.5 1.224 2.0 51.0 1.230 2.5 40.5 1.236 3.0 32.0 1.242 3.5 26.0 1.248 4.0 21.0 1.254 4.5 17.5 1.260 5.0 14.5 1.266 5.5 11.5 1.272 6.0 9.5 1.278 6.5 7.5 1.284 7.0 6.0 1.290 7.5 4.5 1.296 8.0 3.5 vout (vdc) % vnom trim resistance (kohm) 1.200 0.0 - 1.194 0.5 1839.5 1.188 1.0 651.0 1.182 1.5 300.5 1.176 2.0 194.0 1.170 2.5 142.0 1.164 3.0 108.5 1.158 3.5 87.0 1.152 4.0 72.0 1.146 4.5 60.0 1.140 5.0 51.0
21 wpa50 rev d th/smt 8/2004 product: www.cdpoweronline.com thermal derating curves thermal derating (wpa50r48s050) thermal derating (wpa50r48s033) output current v/s temperature vin = 48vdc 0.00 3.00 6.00 9.00 12.00 15.00 20 30 40 50 60 70 80 ambient temperature (deg c) output current (adc) nc 60 lfm 100 lfm 200 lfm 300 lfm 400 lfm 500 lfm 600 lfm output curre nt v/s te mpe rature vin = 48vdc 0.00 2.00 4.00 6.00 8.00 10.00 20 30 40 50 60 70 80 ambient temperature (deg c) output current (adc) nc 60 lfm 100 lfm 200 lfm 300 lfm 400 lfm 500 lfm 600 lfm nc - natural circulation
product: www.cdpoweronline.com wpa50 rev d th/smt 8/2004 22 thermal derating curves thermal derating (wpa50r48s025) output curre nt v/s te mpe rature vin = 48vdc 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 5 1525354555657585 ambient temperature (deg c) output current (adc) nc 60 lfm 100 lfm 200 lfm 300 lfm 400 lfm 500 lfm 600 lfm output curre nt v/s te mpe rature vin = 48vdc 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 5 1525354555657585 ambient temperature (deg c) output current (adc) nc 60 lfm 100 lfm 200 lfm 300 lfm 400 lfm 500 lfm 600 lfm nc - natural circulation thermal derating (wpa50r48s022)
23 wpa50 rev d th/smt 8/2004 product: www.cdpoweronline.com thermal derating curves thermal derating (wpa50r48s018) output curre nt v/s te mpe rature vin = 48vdc 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 5 1525354555657585 ambient temperature (deg c) output current (adc) nc 60 lfm 100 lfm 200 lfm 300 lfm 400 lfm 500 lfm 600 lfm output curre nt v/s te mpe rature vin = 48vdc 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 5 1525354555657585 ambient temperature (deg c) output current (adc) nc 60 lfm 100 lfm 200 lfm 300 lfm 400 lfm 500 lfm 600 lfm nc - natural circulation thermal derating (wpa50r48s015)
product: www.cdpoweronline.com wpa50 rev d th/smt 8/2004 24 thermal derating curves output curre nt v/s te mpe rature vin = 48vdc 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 5 1525354555657585 ambient temperature (deg c) output current (adc) nc 60 lfm 100 lfm 200 lfm 300 lfm 400 lfm 500 lfm 600 lfm nc - natural circulation thermal derating (wpa50r48s012)
25 wpa50 rev d th/smt 8/2004 product: www.cdpoweronline.com power electronics division, americas 3400 e britannia drive, tucson, arizona 85706 tel: 800.547.2537 fax: 520.295.4197 c&d technologies, emea/asia/pacific milton keynes mk14 5bu uk tel: +44 (0)1908 615232 fax: +44 (0)1908 617545 any data, prices, descriptions or specifications 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 impli ed, with regard to the accuracy or completeness of such information. further, because the product(s) featured herein may be used under conditions beyond its cont rol, c&d technologies, inc. hereby disclaims all warranties, either express or implied, concerning the fitness or suitability of such product(s) for any particula r use or in any specific 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 for user?s intended purpose and in user?s specific application. c&d technologies, inc. does not warrant or recommend that any of its products be used in a ny life support or aviation or aerospace applications. c&d technologies

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