dc/dc converter programmable, single output, 1.1v - 1.85vout @ 60a dc/dc converter 3.3v input, 0.8 to 2.5v output, 10a; 5v input, 1.0 to 3.3v output, 10a this product is not fuse protected. user is responsible for providing system protection. consult factory for application information. specifications * s111-03 s111-05 input specifications input voltage range 3.3v 10%* 5.0v 10% measured at +vin pin external input capacitor minimum 500 f with adequate ripple current rating see also note on pg 8 and charts on pg 6 output specifications standard output voltages 0.8v standard setpoint accuracy varies from 1.5% at the low end of the output voltage range, to 3% at the high end. (see chart on pg 2) contact factory for tighter tolerances. see note on pg 7 for trimming to different volt- ages. 0.9v 1.0v 1.2v 1.2v 1.5v 1.5v 1.8v 1.8v 2.1v 2.1v 2.5v 2.5v 3.3v output current 10a 10a 200 lfm at 70c (see also derating curves) load regulation 0.5% 0 to 10a load line regulation 0.5% over specified input voltage range external output capacitor >150f with maxesr = 100m see also note on pg 8 short circuit protection 13a (at 70c) to 20a (at -40c) general specifications enable *** on-open or low / off-high (max 15v) efficiency 90% typical see efficiency curves on pg 4 isolation non-isolated switching frequency 300khz fixed approvals and standards ul 94v-0 protection fusing unit is not fused. operating temperature **** -40c to 70c 200 lfm at 70c (see also derating curves) storage temperature -40c to 85c non-condensing weight 0.3 oz (8.5 gm) mtbf 3.8 million hours per rac prism at 50c ambient and 200 lfm features high output 10a 3.3v 10%, 5v 10% input regulation 0.4% line and load industry standard pin configuration high efficiency to 90% remote sense, trim and enable short circuit protection mtbf 2.9 million hours can source and sink output current ? ? ? ? ? ? ? ? requirement over the operating temperature range. ? technical enquiries - email: sales@murata-ps.com, tel: +1 508 339 3000 www.murata-ps.com fe at ur e es h hi gh o ut pu u t 10 a 3 3. 3v 10 % %, 5 v 1 0% % i np ut r re gu la ti on n 0. 4% l in n e an d lo ad d in n du st ry s t a nd ar d pi n n co nf ig ur a at io n h hi gh e ff ic ie e nc y to 9 0 % r re mo te s e en se , tr im m a nd e na b bl e ? ? ? ? ? ?
dc/dc converter programmable, single output, 1.1v - 1.85vout @ 60a dc/dc converter 3.3v input, 0.8 to 2.5v output, 10a; 5v input, 1.0 to 3.3v output, 10a pin assignments* part number designations s111 - 0520xyz - bb set point tolerance 0 = factory standard (see initial setpoint tolerances) mechanical options 2 = vertical top side pins (standard) input voltage model number consult factory for other options feature options* b = remote sense, trim and enable (standard) 03 = 3.3v connector pin function j1 1 v out 2 v out 3* remote sense (empty optional) 4 v out 5ground connector pin function j2 1ground 2 v in 3 v in 4empty 5trim 6 enable output voltage xyz = x.yz volts consult factory for other options pin length b = .145 inch (standard) consult factory for other options 05 = 5v initial setpoint tolerances * pin present only on selected features. * pin present only when feature is selected. initial setpoint tolerance for 5v input sip?s initial setpoint tolerance for 3.3v input sip?s output voltage (v) output voltage (v) technical enquiries - email: sales@murata-ps.com, tel: +1 508 339 3000 www.murata-ps.com
dc/dc converter programmable, single output, 1.1v - 1.85vout @ 60a dc/dc converter 3.3v input, 0.8 to 2.5v output, 10a; 5v input, 1.0 to 3.3v output, 10a 2.55 (64.8) max .540 (13.72) max 12345 123 56 .155 min 1.800 (45.72) .28 (7.1) .025 x .025 (0.64 x 0.64) j1 j2 .50 (12.7) max 12345 123 56 pin length option .02 ( .5) 1.400 (35.56) .100 (2.54) typ j1 j2 to p s i d e 1.800 (45.72) note 3 2.430 mechanical options 2 .03 .03 mech option #2 (standard) .435 max .255 max .110 max * recommended customer hole size 0.046 .003 s111-03 mechanical options 2 .03 .03 mech option #2 (standard) .390 max .245 max .072 max s111-05 1. dimensions are in inches and (millimeters). 2. tolerances: (unless otherwise noted) 3. pin is present only if feature is selected. inches .xx .020 .xxx .010 millimeters .x 0.5 .xx 0.25 pin: .002 0.05 outline drawings technical enquiries - email: sales@murata-ps.com, tel: +1 508 339 3000 www.murata-ps.com
dc/dc converter programmable, single output, 1.1v - 1.85vout @ 60a dc/dc converter 3.3v input, 0.8 to 2.5v output, 10a; 5v input, 1.0 to 3.3v output, 10a efficiency curves at 25c technical enquiries - email: sales@murata-ps.com, tel: +1 508 339 3000 www.murata-ps.com
dc/dc converter programmable, single output, 1.1v - 1.85vout @ 60a dc/dc converter 3.3v input, 0.8 to 2.5v output, 10a; 5v input, 1.0 to 3.3v output, 10a derating curves no derating needed at 70c with 200 lfm airflow or higher. * * extended operation at greater than rated current may degrade reliability. technical enquiries - email: sales@murata-ps.com, tel: +1 508 339 3000 www.murata-ps.com
dc/dc converter programmable, single output, 1.1v - 1.85vout @ 60a dc/dc converter 3.3v input, 0.8 to 2.5v output, 10a; 5v input, 1.0 to 3.3v output, 10a ripple current approximate ripple current ratings required for input bulk capacitor technical enquiries - email: sales@murata-ps.com, tel: +1 508 339 3000 www.murata-ps.com
dc/dc converter programmable, single output, 1.1v - 1.85vout @ 60a dc/dc converter 3.3v input, 0.8 to 2.5v output, 10a; 5v input, 1.0 to 3.3v output, 10a resistor trim equations note: for best results, the trimming range should not exceed +/-20% of the initial output voltage set by the factory (vset). to trim down to 0.6v, units with an initial output voltage of up to 1.2v can be used. ? trimming up ?raising the output voltage using a resistor from trim to ground. 3.3vin 5vin () vset vout rtrim ? = 1992 vout max = 2.5v () () vout vset vout vset rtrim ? ? + ? = 1 500 vout max = vset + 1 as rtrim approaches 0 . ? trimming down ?lowering the output voltage using a resistor from trim to an external voltage reference or to the vout pins. 3.3vin 5vin () vset vout vref rtrim ? ? = ) 5 4 ( 498 vout min = 0.5v () () vout vset vref vout vset rtrim + ? + + ? ? ? = 1 500 vout min = vset ? ( vref ?1) as rtrim approaches 0 . where: vout is the desired output voltage. vset is the output voltage setpoint (output voltage without trim). vref is the reference voltage for the trim resistor when trimming down. if using vou t for this purpose, then vref = vout . rtrim is the resistance value of the trim resistor (ohms). technical enquiries - email: sales@murata-ps.com, tel: +1 508 339 3000 www.murata-ps.com
dc/dc converter programmable, single output, 1.1v - 1.85vout @ 60a dc/dc converter 3.3v input, 0.8 to 2.5v output, 10a; 5v input, 1.0 to 3.3v output, 10a external capacitance for sip products all sip products require external capacitance to be placed on the system board that the sip will b e designed into. this application note is an attempt to explain how to translate datasheet i nformation and apply it to a system level board design. i nput capacitance although input capacitance value is not critical, the input capacitors must be capable of storing f airly large amounts of energy. this means, for example, small ceramic capacitors would be i nappropriate. the primary criteria, though, for choosing the input capacitors is ac ripple c urrent rating. the sip datasheet contains a chart showing ripple current vs. output current (o r output power). the system designer determines the maximum sip output current required from t he sip. based on that number, the chart will show a corresponding ripple current rating the d esigner needs to plan for when choosing input capacitors. example using sip s111-03 for 1.2 v output: the designer knows the s111 output current will be maximum 8 a in his application. the ripple current chart (3.3v input) shows a 5 a rating required for the input capacitor. also known is that the capacitor the designer hopes to use has a ripple current rating o f 3a. therefore, the designer must use two of the chosen capacitors in parallel for a tota l ripple current capability of 6a. this will adequately cover the 5 a need. o utput capacitance t he only requirement for capacitance value is for basic circuit stability of the sip. that value is s pecified on the sip datasheet?usually 150f. the other consideration for the output c apacitor is the total esr (equiv alent series resistance). as with ripple current, every c apacitor has a specified esr. when using multiple capacitors in parallel, this esr is added e xactly like parallel resistors. therefore, more capacitors mean less esr. the sip datasheet s pecifies a maximum total esr necessary for optimum sip performance. the designer may a lso choose to add more capacitance to reduce output ripple and noise. example : the datasheet specifies a maximum esr of 100m for output capacitance. the system designer wants to use a capacitor with a specified esr of 130m . since 130m is more than the needed 100m , two capacitors must be used in parallel for a total effective esr of 65m . g enerally, good, low esr bulk capacitors are recommended for both input and output capacitance so that fewer capacitors are needed since board real estate is usually an important f actor in today's designs. technical enquiries - email: sales@murata-ps.com, tel: +1 508 339 3000 www.murata-ps.com
dc/dc converter programmable, single output, 1.1v - 1.85vout @ 60a dc/dc converter 3.3v input, 0.8 to 2.5v output, 10a; 5v input, 1.0 to 3.3v output, 10a impact on output voltage ripple and transient response if the customer?s application requires a very low output voltage ripple and / or very low o utput voltage overshoot / undershoot during transients, then the guidelines previously s hown need to be exceeded and good layout practices become mandatory. b y using four 330 f oscon capacitors, each having esr = 17 m , the output voltage r ipple can be decreased to 50 mvpk-pk on a 1.2v output sip. also during a transient load c ondition (load current steps from 20% to 100% and back, at 2 a / sec) the output voltage d oes not overshoot / undershoot more than 100mv. w hen fast and deep transient loads are expected, the input capacitor becomes important as well, especially if the sip is far from its input voltage source. capacitors having as m uch as 2 000 f and combined esr lower than 20 m might be needed. p ractical results heavily depend on physical layout and specific load conditions. for critical a pplications the customer is encouraged to consult with the manufacturer. technical enquiries - email: sales@murata-ps.com, tel: +1 508 339 3000 www.murata-ps.com
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