www.recom-power.com rev.: 0/2018 p-1 features evaluation module ? evaluation platform for rpm-1.0 buck regulator modules ? thermal design considerations included ? emi class b flter ? easy evaluation of trimming, sequencing, soft start, enable and sensing functions description the rpm3.3-1.0-evm-1 and rpm5.0-1.0-evm-1 generate a constant output voltage with an output current up to 1a from an external dc source. all the functions of the rpm3.3-1.0 and rpm5.0-1.0 like trimming, sequencing, soft-start, enable and sensing can be evaluated. also the behavior in overload or over temperature can be evaluated easily before it is designed in. there are also evaluation modules with other output currents available. selection guide part input output output number voltage range voltage current [vdc] [vdc] [a] rpm3.3-1.0-evm-1 3 - 17 3.3 1 rpm5.0-1.0-evm-1 3 - 17 5 1 caution: esd sensitive. always follow esd preventative procedures when handling the product! quick start guide 1) connect con1 to power supply 2) connect con2 to a load 3) connect sense to the required potential the sense preset is via r3 directly at the power module, so the preset voltage is very accurate at the output of the rpm. to equalize ohmic losses of the flter, remove the resistor at r3, and solder a 0 resistor at r4. to sense directly at the load, desolder r3 and r4, and connect pin3 of con2 to the positive potential of the load. notice: if voltage drop from the output to the load is too high, voltage overshoots may occur C especially during load jumps. 4) disable the device via con3 the device is preset as normally on. it can be disabled by pulling the enable pin to gnd. short r1 to disable the device. rpm-1.0-evm-1 evaluation module
www.recom-power.com rev.: 0/2018 p-2 pin name description 1,2 v in positive input voltage (observe correct polarity!) 3 nc not connected 4,5 gnd negative input voltage (common gnd) pin name description 1 on connect to vin 2 en enable pin (leae open if not used) 3 off connected to gnd pin name description 1,2 v out positive output voltage 3 sense output voltage sense pin (leave open if not used) 4,5 gnd negative output voltage (common gnd) pin name description 1 pg power good signal 2 seq sequencing and soft start 3 mode not used 4 vsel not used connector description con1 con3 con2 con4 component placement c on 1 l 2 l 1 l 6 r6 c7 r1 c3 c2 r5 r7 ic1 l 3 c1 c4 c on 2 c6 c on 4 c5 c 9 r2 l 8 r8 r4 r3 c on 3 l 7 l 5 c8 l 4 p g vout seq recom 12.2x12.2mm evaluation board version 03 vsel off o n sense gnd en vin 1 2 3 4 5 1 2 3 4 5 mo de gnd evaluation module specifcations (measured @ ta= 25c, full load after warm up unless otherwise stated) rpm-1.0-evm-1
www.recom-power.com rev.: 0/2018 p-3 v i 1 2 c9 1206 1 2 l 5 0805 1 2 l 7 1 2 c5 1206 1 2 r7 0603 1 2 r4 0603 2 c o n 1 - b 4 c o n 1 - d 3 c o n 3 - c 3 c o n 4 - c 1 2 v s e l r8 0 e 0 0603 100m w 1 2 l 2 0805 4 c o n 2 - d a 1 a 2 c 1 e 1 a 3 a 4 e 2 b 1 e 5 d 1 c 5 b 5 a 5 t ri m gnd2 g nd g nd3 v o ut v i n e n sens e nc nc m o de i c1 e 4 i c 1 - m 1 c o n 4 - a 3 s ens e c o n 2 - c 1 2 l 1 0603 1 2 v i n l 3 1206 1 2 l 4 0603 1 2 v out l 6 1206 4 c o n 4 - d 1 2 c1 1206 1 2 r6 0603 1 2 c3 1206 1 2 r2 0603 1 2 c8 1206 5 c o n 1 - e 1 2 r3 0603 5 c o n 2 - e 2 c o n 4 - b 1 2 c2 1210 1 2 v o c4 1210 1 2 l 8 2 c o n 2 - b 1 2 c6 1206 1 2 c7 1206 1 2 r1 0603 2 e n c o n 3 - b 1 c o n 1 - a 1 2 r5 0603 1 c o n 3 - a 1 c o n 2 - a v o ut vsel g nd p g e n v i n g nd seq sens e m o de schematic description ic1: rpm-1.0 power module. c1,c2,l1,l2,l3,l7,c5,c6: allow placement of various sied components to test input flter design. the populated flter is designed to meet en55022 class b. c7,c8,l4,l5,l6,l8,c3,c4: allow placement of various sied components to test output flter design. the populated flter is designed to meet en55022 class b. r1 and r2: confgure enable pin. these resistors are not populated. the preset of ic1 is always on. refer to ic1 datasheet for more information. c9: sets soft-start time. refer to ic1 datasheet for more information. r3: populated 0 evaluation module specifcations (measured @ ta= 25c, full load after warm up unless otherwise stated) rpm-1.0-evm-1
www.recom-power.com rev.: 0/2018 p-4 output voltage trimming the rpm series offers the feature of trimming the output voltage over a range between 0.9v and 6v by using external trim resistors. the values for trim resistors shown in trim tables below are according to standard e96 values; therefore, the specifed voltage may slightly vary. trim up trim down vout nom r 1 r 2 r 3 v ref 3.3vdc 376kw 1kw 471kw 0.81vdc 5vdc 344kw 431kw practical example rpm3.3-1.0: calculation: vout nom = nominal output voltage [vdc] vout set = trimmed output voltage [vdc] v ref = reference voltage [vdc] r up = trim up resistor [w] r down = trim down resistor [w] r 1 , r 2 , r 3 = internal resistors [w] r up = 376k - 1k = 375kw 4.3 - 3.3 r up according to e96 374kw r down according to e96 309kw r down = (1.8 - 0.81) x 471k = 311kw 3.3 - 1.8 r down = ( vout set - v ref ) x r 3 vout nom - vout set r up = r 1 - r 2 vout set - v nom vout set = 3.5 3.7 3.9 4.1 4.3 4.5 4.7 5.0 5.5 6.0 [vdc] r up (e96) 1m87 931k 619k 464k 374k 309k 267k 221k 169k 137k [w] rpm3.3-1.0 trim up trim up trim down trim down vout set = 3.0 2.7 2.5 2.2 2.0 1.8 1.5 1.2 1.0 0.9 [vdc] r down (e96) 3m40 1m47 1m 590k 432k 309k 182k 86k6 39k2 17k4 [w] vout set = 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 6.0 [vdc] r up (e96) 2m21 1m33 976k 750k 619k 523k 453k 402k 357k 324k [w] rpm5.0-1.0 vout set = 4.5 4.0 3.5 3.3 2.5 1.8 1.5 1.2 1.0 0.9 [vdc] r down (e96) 3m16 1m37 768k 634k 294k 133k 84k5 44k2 20k5 9k53 [w] r up +v out trim r down gnd trim evaluation module specifcations (measured @ ta= 25c, full load after warm up unless otherwise stated) rpm-1.0-evm-1
www.recom-power.com rev.: 0/2018 p-5 continued on next page bom comp. description manufacturer part number manufacturer remarks c2 10f 10% 63v x7r mlcc 1210 grm32er71j106ka12l murata not mounted c4 10f 10% 63v x7r mlcc 1210 grm32er71j106ka12l murata not mounted c1 10f 35v x7r 1206 gmk316ab7106kl-tr taiyo yuden c3 22f 10v x7r 1206 cl31b226mphnnne samsung not mounted c5 10f 35v x7r 1206 gmk316ab7106kl-tr taiyo yuden not mounted c6 10f 35v x7r 1206 gmk316ab7106kl-tr taiyo yuden layout top layer layer 2 (gnd) bottom (gnd) layer 3 (gnd) notes: note1: visit www.recom-power.com/eval-ref-boards to download the gerber fles dimension and physical characteristics parameter type value dimension (lxwxh) 90.0 x 60.0 x 26.0mm weight 23.3g typ. evaluation module specifcations (measured @ ta= 25c, full load after warm up unless otherwise stated) rpm-1.0-evm-1
www.recom-power.com rev.: 0/2018 p-6 comp. description manufacturer part number manufacturer remarks c7 10f 35v x7r 1206 gmk316ab7106kl-tr taiyo yuden not mounted c8 10f 35v x7r 1206 gmk316ab7106kl-tr taiyo yuden not mounted c9 100nf 50v x7r 1206 cl31b104kbcnnnc samsung not mounted con3 rs pro header 2.54mm 3 pin w81103t3825rc rs con4 rs pro header 2.54mm 4 pin w81104t3825rc rs con1 rs pro header 2.54mm 5 pin w81105t3825rc rs con2 rs pro header 2.54mm 5 pin w81105t3825rc rs l7 ferrite bead 70 ohm 2smd 1ln 742792510 wrth electronics not mounted l8 ferrite bead 98 ohm 2smd 1ln 7427932 wrth electronics not mounted l3 ferrite bead 600 ohm 1206 1ln 74279218 wrth electronics l6 0 ohm resistor free free l2 ferrite bead 330 ohm 0805 1ln fbmh2012hm331-t taiyo yuden not mounted l5 ferrite bead 330 ohm 0805 1ln fbmh2012hm331-t taiyo yuden not mounted l1 ferrite bead 600 ohm 0603 1ln 742792651 wrth electronics not mounted l4 ferrite bead 600 ohm 0603 1ln 742792651 wrth electronics not mounted fd1 - fd4 fiducial 1mm cu with 3mm solder resist r1 res smd 0.0ohm jumper 1/10w 0603 rc0603jr-070rl yageo not mounted r3 res smd 0.0ohm jumper 1/10w 0603 rc0603jr-070rl yageo r4 res smd 0.0ohm jumper 1/10w 0603 rc0603jr-070rl yageo not mounted r5 res smd 0.0ohm jumper 1/10w 0603 rc0603jr-070rl yageo not mounted r6 res smd 0.0ohm jumper 1/10w 0603 rc0603jr-070rl yageo not mounted r7 res smd 0.0ohm jumper 1/10w 0603 rc0603jr-070rl yageo not mounted r8 res smd 0.0ohm jumper 1/10w 0603 rc0603jr-070rl yageo not mounted r2 res smd 1m ohm 1% 1/10w 0603 rc0603fr-071ml yageo not mounted sp1 - sp4 spacer 4mm 709955000 wrth electronics ic1 (3) rpm-1.0 module rpmxx-1.0 recom notes: note2: ic1 is rpm5.0-1.0 for rpm5.0-1.0-evm-1 and rpm3.3-1.0 for rpm3.3-1.0-evm-1 ? rpm-1.0-evm-1 evaluation module ? terms and conditions contents the product inf orma tion and speci?ca tions ma y be subject to changes even without prior written notice.the product has been designed f or various a pplica tions; its suita bility lies in the responsibility of each customer . the products are not authorized f or use in safety-critical a pplica tions without recom? s explicit written consent. a safety-critical a pplica tion is an a pplica tion where a failure ma y reasona bl y be expected to endanger or cause loss of life, in?ict bodil y harm or dama ge property . the a pplicant shall indemnify and hold harmless recom, its af?lia ted companies and its representa tives a gainst an y dama ge claims in connection with the unauthorized use of recom products in such safety-critical a pplica tions. packaging information parameter type value packaging dimension (lxwxh) carton 200.0 x 135.0 x 68.0mm packaging quantity 1pcs evaluation module specifcations (measured @ ta= 25c, full load after warm up unless otherwise stated) rpm-1.0-evm-1
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