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rfs dc-dc series data sheet 20w smt converter ? 1.5v to 5v output rev. apr 27, 2004 page 1 of 14 applications ? distributed power architectures ? telecommunications equipment ? lan/wan applications ? data processing ? industrial applications features ? single board design ? low profile smt design ? basic isolation ? excellent co-planarity (within 0.1mm) ? input-to-output isolation: 1500 vdc ? high current density ? output overcurrent protection ? full rated output power up to 80c with 200 lfm (1 m/s) airflow ? operating temperature to 100c ? remote shutdown (primary referenced) ? output voltage trim adjust, positive or negative ? ul, csa, and en/iec60950 (3 rd ed.) approved description the rfs series of converters are low profile, single output, dc-dc converters intended for smt placement and reflow soldering. the product prov ides onboard conversion of standard telecom and datacom input voltages to isolated low output voltages. proprietary patented manuf acturing processes with full process automation ensure optimal product quality. these are very high performa nce, cost effective converte rs with a very small pcb footprint. model selection model input voltage, vdc input current, max adc output voltage, vdc output rated current, adc output ripple/noise, mvp-p typical efficiency, % rfs06za-m6 36-75 0.35 1.5 6.0 70 77 rfs06zb-m6 36-75 0.45 1.8 6.0 70 79 rfs06zd-m6 36-75 0.55 2.5 6.0 75 83 rfs06ze-m6 36-75 0.65 3.3 6.0 75 85 rfs04zg-m6 36-75 0.65 5.0 4.0 50 87
rfs dc-dc series data sheet 20w smt converter ? 1.5v to 5v output rev. apr 27, 2004 page 2 of 14 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 ov er specified input voltage, output load and temperature ra nge, unless otherwise noted. parameter conditions/description min max units input voltage (vin) transient input voltage (vint) continuous transient, 100ms 36 75 100 vdc vdc operating casetemp. (tc) at 100% load -40 100 c storage temperature (ts) -55 120 c on/off control voltage (vrc) referenced to -vin -1.0 5.5 vdc environmental and mechanical specifications specifications apply over specified input voltage, out put load and temperature r ange, unless otherwise noted. parameter conditions/description min nom max units shock iec68-2-27 100 g sinusoidal vibration iec68-2-6 10 g weight 0.6/17 oz/g water washing standard process yes n/a mtbf per bellcore tr-nwt-000332 (100% load @25 c, gb) 1,453 khrs isolation specifications specifications apply over specified input voltage, out put load and temperature r ange, unless otherwise noted. parameter conditions/description min nom max units insulation safety rating vin = 36 ? 75vdc basic n/a isolation voltage (vps) 1,500 vdc isolation resistance (rps) 10 mohm isolation capacitance (cps) 8,200 pf input specifications specifications apply over specified input voltage, out put load and temperature r ange, unless otherwise noted. parameter conditions/description min nom max units input voltage (vin) continuous 36 48 75 vdc input current when shutdown vin.nom, remote control activated 3 10 madc turn-on input voltage 36-75 vin ramping up, io.max 32 34 36 vdc turn-off input voltage 36-75 vin ramping down, io.max 31 33 35 vdc turn-on time to output regulation band after remote control rise time 300 30 5 ms ms ms input reflected ripple current vin.max, io.max 50 map-p input capacitance 1.4 f
rfs dc-dc series data sheet 20w smt converter ? 1.5v to 5v output rev. apr 27, 2004 page 3 of 14 output specifications all specifications apply over input voltage, output load and temperature range, unless otherwise noted. rfs06za: 1.5v/6.0a parameter conditions/description min nom max units output voltage setpoint accuracy vo vin.nom, io = 3.0a, 25 c 1.48 1.50 1.52 vdc output current io vin.min to vin.max 0 6.0 adc line regulation vin.min to vin.max, 50% io.max 30 mv load regulation vin.nom, io.min to io.max 30 mv dynamic regulation peak deviation settling time 50-100% io.max load step change. to 1% error band 150 1000 mv s output voltage ripple* vr vin.min to vin.max, io.min to io max, 20mhz bandwidth 70 85 mvp-p admissible load capacitance comax io.max, vin.nom 2,200 f output current limit threshold icl vout 0.90 vo.nom 120 200 %io.max switching frequency fs vin.nom, io.max 220 khz temperature coefficient tco 0.02 %vo/ c trim range vt io.min to io.max, vin.min to vin.max 1.35 1.65 vo * measured with a 1 f ceramic capacitor across the output pins rfs06za 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
rfs dc-dc series data sheet 20w smt converter ? 1.5v to 5v output rev. apr 27, 2004 page 4 of 14 output specifications all specifications apply over input voltage, output load and temperature range, unless otherwise noted. rfs06zb : 1.8v/6.0a parameter conditions/description min nom max units output voltage setpoint accuracy vo vin.nom, io = 3.0a, 25 c 1.78 1.80 1.82 vdc output current io vin.min to vin.max 0 6.0 adc line regulation vin.min to vin.max, 50% io.max 36 mv load regulation vin.nom, io.min to io.max 36 mv dynamic regulation peak deviation settling time 50-100% io.max load step change. to 1% error band 150 1000 mv s output voltage ripple* vr vin.min to vin.max, io.min to io max, 20mhz bandwidth 70 85 mvp-p admissible load capacitance comax io.max, vin.nom 2,200 f output current limit threshold icl vout 0.90 vo.nom 120 200 %io.max switching frequency fs vin.nom, io.max 220 khz temperature coefficient tco 0.02 %vo/ c trim range vt io.min to io.max, vin.min to vin.max 1.62 1.98 vo * measured with a 1 f ceramic capacitor across the output pins rfs06zb 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
rfs dc-dc series data sheet 20w smt converter ? 1.5v to 5v output rev. apr 27, 2004 page 5 of 14 output specifications all specifications apply over input voltage, output load and temperature range, unless otherwise noted. rfs06zd : 2.5v/6.0a parameter conditions/description min nom max units output voltage setpoint accuracy vo vin.nom, io = 3.0a, 25 c 2.47 2.5 2.53 vdc output current io vin.min to vin.max 0 6.0 adc line regulation vin.min to vin.max, 50% io.max 50 mv load regulation vin.nom, io.min to io.max 50 mv dynamic regulation peak deviation settling time 50-100% io.max load step change. to 1% error band 150 1000 mv s output voltage ripple* vr vin.min to vin.max, io.min to io max, 20mhz bandwidth 75 100 mvp-p admissible load capacitance comax io.max, vin.nom 2,200 f output current limit threshold icl vout 0.90 vo.nom 120 200 %io.max switching frequency fs vin.nom, io.max 220 khz temperature coefficient tco 0.02 %vo/ c trim range vt io.min to io.max, vin.min to vin.max 2.25 2.75 vo * measured with a 1 f ceramic capacitor across the output pins rfs06zd typical characteristic curves 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 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
rfs dc-dc series data sheet 20w smt converter ? 1.5v to 5v output rev. apr 27, 2004 page 6 of 14 output specifications all specifications apply over input voltage, output load and temperature range, unless otherwise noted. rfs06ze : 3.3v/6.0a parameter conditions/description min nom max units output voltage setpoint accuracy vo vin.nom, io = 3.0a, 25 c 3.26 3.3 3.34 vdc output current io vin.min to vin.max 0 6.0 adc line regulation vin.min to vin.max, 50% io.max 65 mv load regulation vin.nom, io.min to io.max 65 mv dynamic regulation peak deviation settling time 50-100% io.max load step change. to 1% error band 150 500 mv s output voltage ripple* vr vin.min to vin.max, io.min to io max, 20mhz bandwidth 75 100 mvp-p admissible load capacitance comax io.max, vin.nom 2,200 f output current limit threshold icl vout 0.90 vo.nom 120 200 %io.max switching frequency fs vin.nom, io.max 220 khz temperature coefficient tco 0.02 %vo/ c trim range vt io.min to io.max, vin.min to vin.max 2.97 3.63 vo * measured with a 1 f ceramic capacitor across the output pins rfs06ze 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
rfs dc-dc series data sheet 20w smt converter ? 1.5v to 5v output rev. apr 27, 2004 page 7 of 14 output specifications all specifications apply over input voltage, output load and temperature range, unless otherwise noted. rfs04zg : 5.0v/4.0a parameter conditions/description min nom max units output voltage setpoint accuracy vo vin.nom, io = 2.0 a, 25 c 4.94 5.0 5.06 vdc output current io vin.min to vin.max 0 4.0 adc line regulation vin.min to vin.max, 50% io.max 100 mv load regulation vin.nom, io.min to io.max 100 mv dynamic regulation peak deviation settling time 50-100% io.max load step change. to 1% error band 250 500 mv s output voltage ripple* vr vin.min to vin.max, io.min to io max, 20mhz bandwidth 50 75 mvp-p admissible load capacitance comax io.max, vin.nom 2,200 f output current limit threshold icl vout 0.90 vo.nom 120 200 %io.max switching frequency fs vin.nom, io.max 250 khz temperature coefficient tco 0.02 %vo/ c trim range vt io.min to io.max, vin.min to vin.max 4.5 5.5 vo * measured with a 1 f ceramic capacitor across the output pins rfs04zg 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
rfs dc-dc series data sheet 20w smt converter ? 1.5v to 5v output rev. apr 27, 2004 page 8 of 14 feature specifications all specifications apply over input voltage, output load and temperature range, unless otherwise noted. parameter conditions/description min nom max units shutdown control: converter off converter on sink current shutdown pin is pulled low voltage source or open circuit vin=vin.nom -1.0 3.5 1.0 1.0 5.5 vdc vdc madc 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 or der to ensure the reliability of the uni t, care must be taken to ensure the maximum case temperature is not exceeded under any conditions. output power vs ambient temperature and airflow 0 20 40 60 80 100 120 0 102030405060708090100110 ambient temp. (deg c) output power (%) 200lfm (1 m/s) 0 lfm
rfs dc-dc series data sheet 20w smt converter ? 1.5v to 5v output rev. apr 27, 2004 page 9 of 14 typical application this series of converters does 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 1f, quality electrolytic / ceramic capacitor is recommended for this purpose. for output decoupling it is recommend connecting a 1f ceramic capacitor direct ly across the output pins of the converter. shutdown feature the remote control pin functions as a normal soft shutdown. it is referenced to the ?vin pin. with positive logic, when the remote control pin is pulled low, the output is turned off and the unit goes into a very low input power mode. an open collector switch is recommended to control the voltage between the remote control pin and the - vin pin of the converter. the remote control pin is pulled up internally, so no external voltage source is required. the user should avoid connecting a resistor between the remote control pin and the +vin pin. the user must take care to ensure that the pin reference for the control is connected close to the -vin pin. the control signal must not be referenced ahead of emi filtering, or remotely from the unit. if the remote control pin is not used, it can be left floating. 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 (tc). to ensure reliable long term operation of the converters, and to comply with safety agency requirements, power-one limits maxi mum allowable case temperature (tc) to 100c (see mechanical drawings). output current limiting 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 vo.nom, the unit will enter a ?hiccup? mode of operation. under this condition the unit will attempt to restart, approximately every 25ms until the overload has cleared. parallel operation paralleling of two converters is not possible. output voltage trim the trim feature allows the user to adjust the output voltage from the nominal. output voltage can be adjusted using an external resistor. to increase vo a resistor should be connected between pins 2 and 3. to decrease vo a resistor should be connected between pins 1 and 3. to increase vo: rext = (a ? (d x vout)) / ( vout ? vout.nom), ? to reduce vo: rext = ((b x vout) - c) / ( vout.nom - vout), ? where vout is the desired output voltage model a b c d rfs06za 1945 1470 1944 470 rfs06zb 2590 1730 2560 750 rfs06zd 5010 2516 5010 1500 rfs06ze 7010 3161 7010 1500 rfs04zg 11260 4532 11240 1500 note: when the output voltage is trimmed up, the output power from the converter must not exceed its maximum rating. this is determined by measuring the voltage on the output pins, and multiplying it by the output current.
rfs dc-dc series data sheet 20w smt converter ? 1.5v to 5v output rev. apr 27, 2004 page 10 of 14 safety considerations these converters feature 1500 volt dc isolation from input to output. the input to output resistance is greater than 10mohm. these converters are provided with basic insulation between input and output circuits according to en60950 / ul1950 / csa60950-00. 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 safety requirements must be observed. these documents include ul60950, csa60950-00 and en60950, although specific applications may have additional requirements. in order for the output of the converter to be considered as selv (safety extra low voltage) or tnv-1, according to en60950 / ul1950 / csa60950- 00, one of the following requirements must be met in the system design: ? the converter has no internal fuse. an external fuse must be provided to protect the system from catastrophic failure. a fuse with a rating not greater than 2.0a is recommended. the user can select a lower rating fuse based upon the inrush transient and the maximum input current of the converter, which occurs 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 any. ? if the voltage source feeding the module is selv, the output of the converter 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 (<60v) 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. emc specifications conducted noise: the converters meet the requirements of level a and level b of en55022, cispr22 and fcc cfr title 47 part 15 sub-part j - conducted (conducted noise on the input terminals) using the following circuit. c1 = 18nf for rfs04zg & rfs06ze c1 = 27nf for rfs06zd, rfs06zb & rfs06za c2 = 2 f to meet en55022 a c2 = 7 f to meet en55022 b electromagnetic susceptibility: standard applied stress class level performance outcome * electrostatic discharge en61000-4-2 2kv to pins 1 b electromagnetic field en61000-4-3 3v/m 2 a electrical fast transient en61000-4-4 2000 vp to input 3 b conducted disturbances en61000-4-6 3vrms to input 2 b * a denotes normal operation, no deviation from specification. b denotes temporary deviation from specification is possible.
rfs dc-dc series data sheet 20w smt converter ? 1.5v to 5v output rev. apr 27, 2004 page 11 of 14 surface mount assembly soldering: the following instructions must be observed when soldering the unit. failure to observe these instructions may result in failure or significant degradation of the module performance. power-one will not honor any wa rranty claims arising from failure to observe these instructions. this product is approved for forced convection reflow soldering only. the curves below define the maximum peak reflow temperature permissible measured on pins 1 and 10 of the converter. the lead-frame is constructed from a high temperature glass filled, ul94v0 flame retardant, diallyl ortho-phthalate moulding compound commonly used for packaging of electronics components. it has passed nasa outgassing test s 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 structure. furthermore they facilitate visual inspection (manual or automatic). the leads are formed from a 97% cu alloy plated with cu and sn 90. 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 well 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 c ontamination 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. . 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 (>8.0mm, 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 l eads and also feature the greatest dimensional accuracy, should be used as pick-up points. restriction curve above 215oc peak temp. at pins 1 and 10 (oc) 200 205 210 215 220 225 230 235 240 245 10 20 30 40 50 60 tp (s) time (s) 0 50 100 150 200 250 300 0 40 80 120 160 200 240 280 320 360 400 440 max. temp. on pins 1 and 10 during reflow soldering (deg c) tp peak temperature (see fig below) 190 ? 450 s
rfs dc-dc series data sheet 20w smt converter ? 1.5v to 5v output rev. apr 27, 2004 page 12 of 14 mechanical drawings note:- mm[inches] tolerances: - 0.5-10 0.1 10-100 0.2
rfs dc-dc series data sheet 20w smt converter ? 1.5v to 5v output rev. apr 27, 2004 page 13 of 14 5 [0.197] recommended land pattern 40 [1.575] 18 17 16 15 14 13 12 11 1 0 1 2 3 4 5 6 7 8 9 24 [0.945] 3.6 [0.142] 29.6 [1.165] 2 . 8 [ 0 . 1 1 ] 315 62.1 33.3 2 4 . 1 5 4 3 . 8 322.6 1 2 . 1 9 12.19 jedec tray
rfs dc-dc series data sheet 20w smt converter ? 1.5v to 5v output rev. apr 27, 2004 page 14 of 14 pinout pin designation function reference 1 +vout positive output voltage secondary 2 -vout 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 -vin input voltage return primary 18 +vin positive input voltage primary ordering information options suffixes to add to part number surface mount version, shipped in jedec tray add suffix ??m6?. notes 1. consult factory for the comp lete list of available options. nuclear and medical applications - po wer-one products are not authorized for use as critical components in life support systems, equipment used in hazardous environments, or nucl ear control systems without the express written consent of the res pective divisional president of power-one, inc. technical revisions - the appearance of pr oducts, including safety agency certific ations pictured on labels, may change dependi ng on the date manufactured. specifications are subject to change without notice

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