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? bcd.00017 rev. aa, 18-oct-2010 page 1 of 18 www.power-one.com rfs/rds series data sheet 20w smt d c -dc converters , 1.5 ? 5vout p ut applications ? distributed power architectures ? telecommunications equipment ? lan/wan applications ? data processing ? industrial applications features ? rohs lead-free-solder and lead-solder- exempted products are available ? basic isolation ? 1500 vdc i/o electric strength test voltage ? high current density ? output overcurrent protection ? operating temperature up to 100 c ? remote shutdown (primary referenced), negative logic option available ? output voltage adjust, positive or negative ? low profile smt design: 8.3 mm (rds) ? excellent co-planarity (within 0.1 mm) ? safety-approved to iec/en 60950-1 and ul/csa 60950-1 2 nd ed. description the rfs and rds series converters are low profile, single output, dc-dc converters intended for smt placement and reflow soldering. the product provides onboard conversion of standard telecom and datacom input voltages to isolated low output voltages. proprietary patented manufacturing processes with full process automation ensure optimal product quality. these are very high performance, cost effective converters with a very small pcb footprint.
? bcd.00017 rev. aa, 18-oct-2010 page 2 of 18 www.power-one.com rfs/rds series data sheet 20w smt d c -dc converters , 1.5 ? 5vout p ut model selection model input voltage vdc input current a output voltage v output rated current a output ripple/noise mvpp typical efficiency % RFS06ZA-M6 1 36 ? 75 0.35 1.5 6.0 70 77 rfs06zb-m6 1 36 ? 75 0.45 1.8 6.0 70 79 rds06zb-m6 1 2 36 ? 75 0.65 1.8 6.0 75 80 rfs06zd-m6 1 36 ? 75 0.55 2.5 6.0 75 83 rfs06ze-m6 1 36 3 ? 75 0.65 3.3 6.0 75 85 rds05ze-m6 1 2 36 3 ? 75 0.65 3.3 5.0 75 83 rfs04zg-m6 1 36 3 ? 75 0.65 5.0 4.0 50 87 rds04zg-m6 1 2 36 3 ? 75 0.65 5.0 4.0 50 87 1 for products rohs-compliant for all 6 substances, change the suffix m6 to m6g . 2 for negative shutdown logic, change -m6 to -nm6 or -m6g to -nm6g 3 products with v i = 33.5 ? 75 v are also available: replace m6 by s1. model numbers highlighted in yellow are not recommended for new designs. absolute maximum ratings stresses in excess of the absolute maximum ratings ma y cause performance degradation, adversely affect long term reliability and cause permanent damage to the converte r. specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted. parameter conditions/description min max unit input voltage (v i ) transient input voltage (v it ) continuous transient, 100 ms 36 75 100 vdc vdc operating case temp. (t c ) at 100% load ?40 100 c storage temperature (t s ) ?55 120 c on/off control voltage (v rc ) referenced to ?vi ?1.0 5.5 v environmental and mechanical specifications apply over specified input voltage, output load and temperature r ange, unless otherwise noted. parameter conditions/description min nom max unit shock iec68-2-27 100 g n sinusoidal vibration iec68-2-6 10 g n weight 17 g water washing standard process yes n/a mtbf of rfs models 1 453 000 h mtbf of rds models per bellcore tr-nwt-000332 (100% load @25 c, gb) 1 452 000 h
? bcd.00017 rev. aa, 18-oct-2010 page 3 of 18 www.power-one.com rfs/rds series data sheet 20w smt d c -dc converters , 1.5 ? 5vout p ut isolation specifications apply over specified input voltage, output load and temperature r ange, unless otherwise noted. parameter conditions/description min nom max unit insulation safety rating v i = 75 vdc basic n/a electric strength test voltage 1 500 vdc insulation resistance 10 mohm insulation capacitance rfs models rds06zb rds04zg, rds05ze 8 200 4 700 2 200 pf input data specifications apply over specified input voltage, output load and temperature r ange, unless otherwise noted. parameter conditions/description min nom max unit input voltage (v i ) continuous 36 48 75 vdc input current when shutdown v i nom , remote control activated 3 10 ma turn-on input voltage ramping up, i o max 32 34 36 31 33 35 turn-off input voltage rfs models rds models ramping down, i o max 30 32 34 v turn-on time, rfs/rds models to output regulation band after remote control rise time 300/600 30/30 5/5 ms input reflected ripple current v i max , i o max 50 ma pp input capacitance 1.4 f
? bcd.00017 rev. aa, 18-oct-2010 page 4 of 18 www.power-one.com rfs/rds series data sheet 20w smt d c -dc converters , 1.5 ? 5vout p ut output data rfs06za: 1.5 v / 6.0 a all specifications apply over input voltage, output load and temperature range, unless otherwise noted. parameter conditions/description min nom max unit output voltage setpoint accuracy v o v i nom , i o = 3.0 a, 25 c 1.48 1.5 1.52 v output current i o v i min ? v i max 0 6.0 a line regulation v i min ? v i max , 50% i o max 30 mv load regulation v i nom , i o min ? i o max 30 mv dynamic regulation peak deviation settling time 50 ? 100% i o max load step change. to 1% error band 150 1000 mv s output voltage ripple 1 v i min ? v i max , i o max 20 mhz bandwidth 70 85 mv pp admissible load capacitance i o max , v i nom 2200 f output current limit threshold v o 0.90 v o nom 120 200 % i o max switching frequency v i nom , i o max 220 khz temperature coefficient 0.02 %v o / c trim range i o min ? i o max , v i min ? v i max 1.35 1.65 v 1 measured with a 1 f capacitor across the ouput pins. typical characteristic curves output voltage vs load 0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 0.00 1.20 2.40 3.60 4.80 6.00 7.20 8.40 9.60 10.80 12.00 iout (a) vout (v) vin min vin nom vin max efficiency vs load 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 0.00 0.30 0.60 1.20 1.80 2.40 3.00 3.60 4.20 4.80 5.40 6.00 iout (a) efficiency vin min vin nom vin max
? bcd.00017 rev. aa, 18-oct-2010 page 5 of 18 www.power-one.com rfs/rds series data sheet 20w smt d c -dc converters , 1.5 ? 5vout p ut rfs06zb: 1.8 v / 6.0 a all specifications apply over input voltage, output load and temperature range, unless otherwise noted. parameter conditions/description min nom max unit output voltage setpoint accuracy v o v i nom , i o = 3.0 a, 25 c 1.78 1.8 1.82 v output current i o v i min ? v i max 0 6.0 a line regulation v i min ? v i max , 50% i o max 36 mv load regulation v i nom , i o min ? i o max 36 mv dynamic regulation peak deviation settling time 50 ? 100% i o max load step change. to 1% error band 150 1000 mv s output voltage ripple 1 v i min ? v i max , i o max 20 mhz bandwidth 70 85 mv pp admissible load capacitance i o max , v i nom 2200 f output current limit threshold v o 0.90 v o nom 120 200 % i o max switching frequency v i nom , i o max 220 khz temperature coefficient 0.02 %v o / c trim range i o min ? i o max , v i min ? v i max 1.62 1.98 v 1 measured with a 1 f capacitor across the ouput pins. typical characteristic curves output voltage vs load 0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 0.00 1.20 2.40 3.60 4.80 6.00 7.20 8.40 9.60 10.80 12.00 iout (a) vout (v) vin min vin nom vin max efficiency vs load 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 0.00 0.30 0.60 1.20 1.80 2.40 3.00 3.60 4.20 4.80 5.40 6.00 iout (a) efficiency vin min vin nom vin max
? bcd.00017 rev. aa, 18-oct-2010 page 6 of 18 www.power-one.com rfs/rds series data sheet 20w smt d c -dc converters , 1.5 ? 5vout p ut rds06zb: 1.8 v / 6.0 a parameter conditions/description min nom max unit output voltage setpoint accuracy v o v i nom , i o = 3.0 a, 25 c 1.78 1.8 1.82 v output current i o v i min ? v i max 0 6.0 a line regulation v i min ? v i max , 50% i o max 36 mv load regulation v i nom , i o min ? i o max 36 mv dynamic regulation peak deviation settling time 50 ? 100% i o max load step change. to 1% error band 150 500 mv s output voltage ripple v i min ? v i max , i o max 20 mhz bandwidth 75 100 mv pp admissible load capacitance i o max , v i nom 2200 f output current limit threshold v o 0.90 v o nom 120 200 % i o max switching frequency v i nom , i o max 400 khz temperature coefficient 0.02 %v o / c trim range i o min ? i o max , v i min ? v i max 1.62 1.98 v typical characteristic curves output voltage vs load 0,0 0,2 0,4 0,6 0,8 1,0 1,2 1,4 1,6 1,8 2,0 0 1 2 4 5 6 7 8 10 11 12 iout (a) vout (v) vin min vin nom vin max efficiency vs load 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 0 1 2 3 4 5 iout (a) efficiency vin min vin nom vin max
? bcd.00017 rev. aa, 18-oct-2010 page 7 of 18 www.power-one.com rfs/rds series data sheet 20w smt d c -dc converters , 1.5 ? 5vout p ut rfs06zd: 2.5 v / 6.0 a all specifications apply over input voltage, output load and temperature range, unless otherwise noted. parameter conditions/description min nom max unit output voltage setpoint accuracy v o v i nom , i o = 3.0 a, 25 c 2.47 2.5 2.53 v output current i o v i min ? v i max 0 6.0 a line regulation v i min ? v i max , 50% i o max 50 mv load regulation v i nom , i o min ? i o max 50 mv dynamic regulation peak deviation settling time 50 ? 100% i o max load step change. to 1% error band 150 1000 mv s output voltage ripple 1 v i min ? v i max , i o max 20 mhz bandwidth 75 100 mv pp admissible load capacitance i o max , v i nom 2200 f output current limit threshold v o 0.90 v o nom 120 200 % i o max switching frequency v i nom , i o max 220 khz temperature coefficient 0.02 %v o / c trim range i o min ? i o max , v i min ? v i max 2.25 2.75 v 1 measured with a 1 f capacitor across the ouput pins. typical characteristic curves output voltage vs load 0.00 0.50 1.00 1.50 2.00 2.50 3.00 0.00 0.90 1.80 2.70 3.60 4.50 5.40 6.30 7.20 8.10 9.00 9.90 10.80 11.70 iout (a) vout (v) vin min vin nom vin max efficiency vs load 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 0.00 0.30 0.60 1.20 1.80 2.40 3.00 3.60 4.20 4.80 5.40 6.00 iout (a) efficiency vin min vin nom vin max
? bcd.00017 rev. aa, 18-oct-2010 page 8 of 18 www.power-one.com rfs/rds series data sheet 20w smt d c -dc converters , 1.5 ? 5vout p ut rfs06ze: 3.3 v / 6.0 a all specifications apply over input voltage, output load and temperature range, unless otherwise noted. parameter conditions/description min nom max unit output voltage setpoint accuracy v o v i nom , i o = 3.0 a, 25 c 3.26 3.3 3.34 v output current i o v i min ? v i max 0 6.0 a line regulation v i min ? v i max , 50% i o max 65 mv load regulation v i nom , i o min ? i o max 65 mv dynamic regulation peak deviation settling time 50 ? 100% i o max load step change. to 1% error band 150 500 mv s output voltage ripple 1 v i min ? v i max , i o max 20 mhz bandwidth 75 100 mv pp admissible load capacitance i o max , v i nom 2200 f output current limit threshold v o 0.90 v o nom 120 200 % i o max switching frequency v i nom , i o max 220 khz temperature coefficient 0.02 %v o / c trim range i o min ? i o max , v i min ? v i max 2.97 3.63 v 1 measured with a 1 f capacitor across the ouput pins. typical characteristic curves output voltage vs load 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 0.00 1.20 2.40 3.60 4.80 6.00 7.20 8.40 9.60 10.80 12.00 iout (a) vout (v) vin min vin nom vin max efficiency vs load 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 0.00 0.60 1.80 3.00 4.20 5.40 iout (a) efficiency vin min vin nom vin max
? bcd.00017 rev. aa, 18-oct-2010 page 9 of 18 www.power-one.com rfs/rds series data sheet 20w smt d c -dc converters , 1.5 ? 5vout p ut rds05ze: 3.3 v / 5.0 a all specifications apply over input voltage, output load and temperature range, unless otherwise noted. parameter conditions/description min nom max unit output voltage setpoint accuracy v o v i nom , i o = 3.0 a, 25 c 3.26 3.3 3.34 v output current i o v i min ? v i max 0 5.0 a line regulation v i min ? v i max , 50% i o max 65 mv load regulation v i nom , i o min ? i o max 65 mv dynamic regulation peak deviation settling time 50 ? 100% i o max load step change. to 1% error band 150 500 mv s output voltage ripple v i min ? v i max , i o max 20 mhz bandwidth 75 100 mv pp admissible load capacitance i o max , v i nom 2200 f output current limit threshold v o 0.90 v o nom 120 200 % i o max switching frequency v i nom , i o max 400 khz temperature coefficient 0.02 %v o / c trim range i o min ? i o max , v i min ? v i max 2.97 3.63 v typical characteristic curves output voltage vs load 0,0 0,5 1,0 1,5 2,0 2,5 3,0 3,5 0 1 2 3 4 5 6 7 8 9 10 iout (a) vo ut (v) vin min vin nom vin max efficiency vs load 0 10 20 30 40 50 60 70 80 90 0 1 3 4 5 iout (a) efficiency (%) vin min vin nom vin max
? bcd.00017 rev. aa, 18-oct-2010 page 10 of 18 www.power-one.com rfs/rds series data sheet 20w smt d c -dc converters , 1.5 ? 5vout p ut rfs04zg: 5.0 v / 4.0 a all specifications apply over input voltage, output load and temperature range, unless otherwise noted. parameter conditions/description min nom max unit output voltage setpoint accuracy v o v i nom , i o = 2.0 a, 25 c 4.94 5.0 5.06 v output current i o v i min ? v i max 0 4.0 a line regulation v i min ? v i max , 50% i o max 120 mv load regulation v i nom , i o min ? i o max 120 mv dynamic regulation peak deviation settling time 50 ? 100% i o max load step change. to 1% error band 250 500 mv s output voltage ripple 1 v i min ? v i max , i o max 20 mhz bandwidth 50 75 mv pp admissible load capacitance i o max , v i nom 2200 f output current limit threshold v o 0.90 v o nom 120 200 % i o max switching frequency v i nom , i o max 250 khz emperature coefficient 0.02 %v o / c trim range i o min ? i o max , v i min ? v i max 4.5 5.5 v 1 measured with a 1 f capacitor across the ouput pins. typical characteristic curves output voltage vs load 0.00 1.00 2.00 3.00 4.00 5.00 6.00 0.00 0.60 1.20 1.80 2.40 3.00 3.60 4.20 4.80 5.40 6.00 6.60 7.20 7.80 iout (a) vout (v) vin min vin nom vin max efficiency vs load 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 0.00 0.20 0.40 0.80 1.20 1.60 2.00 2.40 2.80 3.20 3.60 4.00 iout (a) efficiency vin min vin nom vin max
? bcd.00017 rev. aa, 18-oct-2010 page 11 of 18 www.power-one.com rfs/rds series data sheet 20w smt d c -dc converters , 1.5 ? 5vout p ut rds04zg: 5.0 v/4.0 a all specifications apply over input voltage, output load and temperature range, unless otherwise noted. parameter conditions/description min nom max unit output voltage setpoint accuracy v o v i nom , i o = 2.0 a, 25 c 4.94 5.0 5.06 v output current i o v i min ? v i max 0 4.0 a line regulation v i min ? v i max , 50% i o max 120 mv load regulation v i nom , i o min ? i o max 120 mv dynamic regulation peak deviation settling time 50 ? 100% i o max load step change. to 1% error band 250 500 mv s output voltage ripple v i min ? v i max , i o max 20 mhz bandwidth 50 100 mv pp admissible load capacitance i o max , v i nom 2200 f output current limit threshold v o 0.90 v o nom 120 200 % i o max switching frequency v i nom , i o max 400 khz temperature coefficient 0.02 %v o / c trim range i o min ? i o max , v i min ? v i max 4.5 5.5 v typical characteristic curves efficiency vs load 0 10 20 30 40 50 60 70 80 90 0 1 3 4 5 iout (a) efficiency (%) vin min vin nom vin max efficiency vs load 0 10 20 30 40 50 60 70 80 90 0 1 2 3 4 iout (a) efficiency (%) vin min vin nom vin max output voltage vs load 0,0 1,0 2,0 3,0 4,0 5,0 6,0 0 1 2 2 3 4 5 6 6 7 8 iout (a) vo ut (v) vin min vin nom vin max
? bcd.00017 rev. aa, 18-oct-2010 page 12 of 18 www.power-one.com rfs/rds series data sheet 20w smt d c -dc converters , 1.5 ? 5vout p ut shutdown all specifications apply over input voltage, output load, and temperature range, unless otherwise noted. parameter conditions/description min nom max unit rfs models (pos. logic) ? converter on ? converter off voltage source or open circuit sink current (v i = v i nom ) shutdown pin is pulled low 3.5 ?1.0 1.0 5.5 1.0 v ma v rds models positive logic: ? converter on ? converter off negative logic 1 : ? converter on ? converter off on/off signal is low? converter off high logic range shutdown pin is pulled low on/off signal is low? converter on low logic range shutdown pin is pulled high 2.5 ?1.0 ?1.0 1.0 5.5 1.0 0.25 5.5 v v v v 1 prproducts with the suffix -nm6 or -nm6g . temperature derating curves the derating curves below give an indication of the out put power achievable with and without forced-air cooling. however in the final application, in order to ensure the reli ability of the converter, care must be taken to ensure the maximum case temperature is not exceeded under any conditions. rfs series: output power vs ambient temperature and airflow 0 20 40 60 80 100 120 0 102030405060708090100110 ambient temp. (c) output p ower (%) 200lfm (1 m/s) 0 lfm
? bcd.00017 rev. aa, 18-oct-2010 page 13 of 18 www.power-one.com rfs/rds series data sheet 20w smt d c -dc converters , 1.5 ? 5vout p ut rds series: r output power vs ambient temperature and airflow (typically, vi = 48 v) 0 20 40 60 80 100 120 0 102030405060708090100 am bient tem p. (c) out put po we r (%) 0 lfm 200lfm (1 m/s) 400lfm (2 m/s) application and au xiliary functions these converters do not require any external components for proper operation. however, if the distribution of the input voltage to the converter contains significant inductance, a capacitor across the input terminals may be required to stabilize the input voltage. a minimum of 1 f, quality electrolytic or ceramic capacitor is recommended for this purpose. for output decoupling it is recommend connecting a 1 f ceramic capacitor directly across the output pins of the converter. shutdown the remote control pin functions as a normal soft shutdown. it is referenced to the ?vi pin. with positive logic, when the shutdown pi n is pulled low, the output is turned off, and the unit goes into a very low input power mode. rds models are also available with a negative shutdown logic. an open collector switch is recommended to control the voltage between the shutdown pin and the -vi pin of the converter. the shutdown pin is pulled up internally, so no external voltage source is required. the user should avoid connecting a resistor between the shutdown pin and +vi pin. the user must take care to ensure that the pin reference for the control is connected close to the ?vi pin. the control signal must not be referenced ahead of emi filtering, or remotely from the converter. if the shutdown pin is not used, it can be left open-circuit. negative logic for rds ( suffix -nm6 or -nm6g) the output of the converter is enabled or disabled by means of a logic signal (ttl, cmos, etc.) applied to the shutdown pin. no out put voltage overshoot will occur, when the converter is turned on. if the shutdown function is not required, the pin should be connected with ?vi to enable the output . thermal considerations the converter is designed for natural or forced convection cooling. the output power of the converter is limited by the maximum case temperature (t c ). to ensure reliable long term operation of the converters, and to comply with safety agency requirements, power-one limits maximum allowable case tempe- rature (t c ) to 100 c (see mechanical data).
? bcd.00017 rev. aa, 18-oct-2010 page 14 of 18 www.power-one.com rfs/rds series data sheet 20w smt d c -dc converters , 1.5 ? 5vout p ut output current limitation when the output is overloaded above the maximum output current rating, the voltage will start to reduce to maintain the output power to a safe level. in a condition of high overload or short-circuit where the output voltage is pulled below approximately 30% of v o nom , the converter will enter a ?hiccup? mode of operation. under this condition the converter will attempt to restart, approximately every 25 ms, until the overload has cleared. parallel operation paralleling of two converters is not possible. output voltage adjust this feature allows the user to adjust the output voltage v o . output voltage can be adjusted using an external resistor. to increase v o , a resistor r ext should be connected between pins 2 and 3. to decrease v o , the resistor should be connected between pins 1 and 3. to increase v o : r ext = (a ? (d v o )) / ( v o ? v o nom ) [ ] to reduce v o : r ext = ((b v o ) ? c) / ( v o nom ? v o ) [ ] model a b c d rfs06za 1945 1470 1944 470 rfs06zb rds06zb 2590 1730 2560 750 rfs06zd 5010 2516 5010 1500 rfs06ze rds05ze 7010 3161 7010 1500 rfs04zg rds04zg 11260 4532 11240 1500 note : when the output voltage is trimmed up, the output power from the conv erter must not exceed its maximum rating. this is determined by measuring the voltage on the output pins and multiplying it by the output current. safety these converters are tested with 1500 vdc from input to output. the input-to-output resistance is greater than 10 m ? . these converters are provided with basic insulation between input and output. nevertheless, if the system using the converter needs to receive safety agency approval, certain rules must be followed in the design of the system. in particular, all of the creepage and clearance requirements of the end-use system must be observed. in order to consider the output of the converter as selv (safety extra low voltage) or tnv-1, according to iec/en 60950-1 and ul/csa 60950-1, the follow- ing requirements must be met in the system design: ? fuse: as the converter has no internal fuse, an external fuse must be provided to protect the system from catastrophic failure. we recommend a fuse with a rating not greater than 2.0 a. the user can select a fuse with lower rating based upon the maximum inrush transien t and the maximum input current at the minimum input voltage. both input traces and the chassis ground trace (if applicable) must be capable of conducting a current of 1.5 times the value of the fuse without opening. the fuse must not be placed in the grounded input line. ? if the voltage source feeding the converter is selv, tnv-1, or tnv-2, the output of the con- verter is considered selv and may be grounded or ungrounded. ? the circuitry of the converter may generate transients, which exceed the input voltage. even if the input voltage is selv (<60 v), the components on the primary side of the converter may have to be considered as hazardous. a safety interlock may be needed to prevent the user from accessing the converter while operational.
? bcd.00017 rev. aa, 18-oct-2010 page 15 of 18 www.power-one.com rfs/rds series data sheet 20w smt d c -dc converters , 1.5 ? 5vout p ut emc specifications conducted noise, rfs series the converters meet the requirements of en 55022 class a and class b for conducted noise on the input terminals using the circuit below: jm069 rfs converter 1 2 17 18 c1 = 18 nf for rfs04zg, rfs06ze c1 = 27 nf for rfs06zd, rfs06zb, rfs06za c2 = 2 f to meet en 55022 class a c2 = 7 f to meet en 55022 class b conducted noise, rds series the converters may require a single capacitor to meet the requirements of en 55022 class a for conducted emissions on the input terminals; see the figure below. conducted emissions (input pins) 0 10 20 30 40 50 60 70 80 1,e+0 5 1,e+06 1,e+07 1,e+08 freq (mhz) dbv en55 022 a av. en55 022 a qp. electromagnetic susceptibility: standard applied stress class level performance criterion * electrostatic discharge en 61000-4-2 2 kv to pins 1 b electromagnetic field en 61000-4-3 3 v/m 2 a electrical fast transients en 61000-4-4 2000 vp to input 3 b conducted disturbances en 61000-4-6 3 vac to input 2 b * a denotes normal operation, no deviation from specification. b denotes temporary deviation from specification possible. 0.1 1 10 30
? bcd.00017 rev. aa, 18-oct-2010 page 16 of 18 www.power-one.com rfs/rds series data sheet 20w smt d c -dc converters , 1.5 ? 5vout p ut mechanical data dimensions in mm [inches] jm066 highest component 3.1 [0.122] tc & pick up point pin 1 tc & pick up point 9.45 [0.372] (rfs) 8.3 [0.327] (rds) surface mount assembly soldering the following soldering instructions must be observed to prevent failure or significant degradation of the converter performance. power-one will not honor any warranty claims arising from failure to observe these instructions. the lead-frame is constructed for a high temperature glass filled, ul94 v-0 flame retardant, dually ortho- phthalate molding compound commonly used for packaging of electronics components. it has passed nasa outgassing tests, and is certified to mil-m-14. the coefficient of thermal expansion is equivalent to fr4. the gull wing leads are formed to ensure optimal solder joint strength and stru cture. furthermore they facilitate visual inspection (manual or automatic). the leads are formed from a 97% cu alloy plated with ni and matte sn. this material is commonly used in the manufacture of integrated circuits. it has good corrosion resistance and exhibits the nobility inherent to all high copper alloys. unlike brasses, this material is essentially immune to stress corrosion cracking. it also exhibits excellent solderability. it is readily wetted by solders and performs we ll in standard solderability tests. (dip of class ii or better). the product is manufactured with a patented process, which is fully automated and ?in-line?. this ensures that there is no contamination or mechanical stress on the lead-frame so that the co-planarity and solderability are maintained. the product is shipped in jedec trays to ensure preservation of the co-planarity and enable fully automated assembly in the final application. mind the marking for pin 1! these products are approv ed for forced convection reflow soldering only. products rohs-compliant for all 6 substances (model designation ending with g) allow for a solder profile with higher temperatures; see tables below.
? bcd.00017 rev. aa, 18-oct-2010 page 17 of 18 www.power-one.com rfs/rds series data sheet 20w smt d c -dc converters , 1.5 ? 5vout p ut pick & place assembly the product is designed with a large flat area in the center of the top surface to serve as a pick up point for automated vacuum pick and place equipment. the ?open board? construction of the unit ensures that weight is kept to a minimum. however due to the relatively large size of the component, a large nozzle (>8 mm, depending on vacuum pressure) is recommended for picking and placing. the unit may also be automatically handled using ?odd-form? placement equipment, with mechanical grippers. for this type of equipment the end edges of the device, which have no leads and also feature the greatest dimensional accuracy, should be used as pick-up points. recommended solder lands dimensions in mm [inches] recommended reflow profile (measured at the leads of the converter) product pre-heat ramp pre-heat soaking ramp to reflow reflow cooling from to rate from to time rate time above liquidus peak temp. time within 5 c of peak temp time to peak rate c c c/s c c s c s c s s c/s -m6 (sn-pb eutectic) 25 150 2 150 183 90 - 120 2 45 220 5 10 180 3 -m6g (lead-free) 25 180 2 180 217 90 - 120 2 45 240 5 10 210 3 worst case reflow parameters following j-std-020d (measured in the center, on top side of the converter) product pre-heat ramp pre-heat soaking ramp to reflow reflow cooling from to rate from to max. time rate max. time above liquidus max. peak temp. max. time within 5 c of peak temp. max. time to peak rate c c c/s c c s c s c s s c/s -m6 (sn-pb eutectic) 25 150 3 100 150 120 3 45 230 10 360 6 -m6g (lead-free) 25 180 3 150 200 120 3 45 260 10 480 6 jm067 24 [0.945]
? bcd.00017 rev. aa, 18-oct-2010 page 18 of 18 www.power-one.com rfs/rds series data sheet 20w smt d c -dc converters , 1.5 ? 5vout p ut jedec tray pinout pin designation function reference 1 +vo positive output voltage secondary 2 ?vo output voltage return secondary 3 trim output voltage adjust secondary 4 nc no connection secondary 5 nc no connection primary 6 nc no connection primary 7 nc no connection primary 8 nc no connection primary 9 nc no connection primary 10 nc no connection primary 11 shutdown shutdown control. pull low to turn unit off primary 12 nc no connection primary 13 nc no connection primary 14 nc no connection primary 15 nc no connection primary 16 nc no connection primary 17 ?vi input voltage return primary 18 +vi positive input voltage primary nuclear and medical applications - power-one products are not des igned, intended for use in, or authorized for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems without the express wr itten consent of the respecti ve divisional pr esident of power-one, inc. technical revisions - the appearance of products, including safe ty agency certifications pictured on labels, may change dependi ng on the date manufactured. specifications are subject to change without notice. 62.1 33.3 12.19 12.19 311.15 +0.25 /?0.13 311.66 +0.25 /?0.13 pin 1 (reference corner) 3.0 chamfer 315 135.9 10.56 322.6 132.1 +0.25 / ?0.13 92.1 holding pad 24.15 43.8 15 132.59 +0.25 / ?0.13 12.7 jm068

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