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psc, psl series data sheet positive switching regulators melcher the power partners. bcd20027-g rev ac1, 12-apr-2018 page 1 of 19 151 5.9" 88 3.5" 32 1.3" 168 6.6" 37 1.5" 8 te 107 4.2" 3 u features ? r o h s lead-free-solder and lead-solder-exempted products a re a v a i l a b le ? 5 y e a r w a rran t y for rohs compliant products w i t h an extended temperature range ? compliant to en 45545 fo r (version v104 or later) ? input voltage up to 144 vdc ? single output of 3.3 to 48 vdc ? n o i n p u t -to-output isolation ? high efficiency up to 97% ? extremely wide input voltage range ? low input-to-output differential voltage ? v e ry good dynamic properties ? input undervoltage lockout ? output voltage adjustment and inhibit fu n c ti o n ? continuously no-load and short-circuit proof ? all boards are coated with a protective lacquer description the psc and psl series positive switching regulators are designed as power supplies for electronic systems, where no input-to-output isolation is required. their major advantages include a high level of efficiency, high reliability, low output ripple, and excellent dynamic response. models with input voltages up to 144 v are specially designed for secondary switched and battery-driven mobile applications. the converters are suitable for railway applications according to en 50155 and en 50121. two type of housings are available allowing operation up to 71 c. the psc series is designed for wall or chassis mounting with faston connections, whereas the psl series is designed for insertion into a 19" din-rack and exhibits a h11 connector. various options are available to adapt the converters to different applications. table of contents page page description ............................................................................ 1 model selection .................................................................... 2 functional description .......................................................... 5 electrical input data .............................................................. 6 electrical output data ........................................................... 8 auxiliary functions .............................................................. 11 electromagnetic compatibility (emc) ................................. 13 immunity to environmental conditions ............................... 14 mechanical data ................................................................. 15 safety and installation instructions ..................................... 16 description of options ........................................................ 17 accessories ......................................................................... 18 c opyright ? 2018, bel p ower solutions inc. all rights reserved. safety-approved to the latest edition of iec/en 60950-1 and ul/csa 60950-1
psc, psl series data sheet positive switching regulators melcher the power partners. b cd20027-g rev a c 1, 12-apr-2018 page 2 of 19 table 2: psl series output output operating input nom. input efficiency 2 type options voltage current voltage range voltage designation v o nom [v] i o nom [a] v i [v] v i nom [v] ? ? min [%] ? ? typ [%] 5.1 10 8 ? 80 40 77.5 79 psl5a10-9rg -7, l, i, c, non-g 5.1 12 7 ? 40 20 83.5 85.5 psl5a12-9rg -7, l, c, non-g 12 6 18 ? 144 1 60 88 89 psl126-9rg -7, l, c, non-g 12 8 15 ? 80 40 89 90 psl128-9rg l, c 15 6 22 ? 144 1 60 89 91 psl156-9rg l, c 15 8 19 ? 80 40 90 92.5 psl158-9rg -7, l, i, c, non-g 24 6 31 ? 144 1 60 93 94 psl246-9rg -7, l, c, non-g 24 8 29 ? 80 40 93 95 psl248-9rg -7, l, c, k, non-g 36 6 44 ? 144 1 80 95 96 psl366-9rg -7, l, c, non-g 36 8 42 ? 80 60 95 96.5 psl368-9rg -7, l, c, non-g 48 6 58 ?144 1 80 96 97 psl486-9rg -7, l, non-g 1 surges up to 156 v for 2 s 2 efficiency at v i nom and i o nom . model selection table 1: psc series output output operating input nom. input efficiency 2 type options voltage current voltage range voltage designation v o nom [v] i o nom [a] v i [v] v i nom [v] ? ? min [%] ? ? typ [%] 5.1 10 8 ? 80 40 77.5 79 psc5a10-9irg -7, l, c, d, non-g 5.1 11 8 ? 40 20 78 79 psc5a11-2 3 -- 5.1 12 7 ? 40 20 83.5 85.5 psc5a12-9irg -7, l, p, c, d, non-g 12 6 18 ? 144 1 60 88 89 psc126-9irg -7, l, c, d, non-g 12 8 15 ? 80 40 91 93 psc128-9irg -7, l, p, c, d, non-g 12 9 15 ? 40 30 89 90 psc129-2ir 4 -- 15 6 22 ? 144 1 60 89 91 psc156-9irg l, c, d 15 8 19 ? 80 40 90 92.5 psc158-9irg -7, l, p, c, d, non-g 15 9 19 ? 40 30 91 93.5 psc159-2ir 5 -- 24 6 31 ? 144 1 60 93 94 psc246-9irg -7, l, p, c, d, non-g 24 8 29 ? 80 40 93 95 psc248-9irg -7, l, p, c, d, non-g 24 9 29 ? 60 40 94 96 psc249-2ir 6 -- 36 6 44 ? 144 1 80 95 96 psc366-9irg -7, l, p, c, d, non-g 36 8 42 ? 80 60 95 96.5 psc368-9irg -7, l, p, c, d, non-g 48 6 58 ?144 1 80 96 97 psc486-9irg -7, l, p, c, d, non-g 1 surges up to 156 v for 2 s; see electrical input data 2 efficiency at v i nom and i o nom . 3 obsolete. use psca12-9irg ! 4 obsolete. use psc128-9lirg ! 5 obsolete. use psc158-9lirg ! 6 obsolete. use psc248-9lirg ! nfnd: not for new designs preferred for new designs
psc, psl series data sheet positive switching regulators melcher the power partners. b cd20027-g rev a c 1, 12-apr-2018 page 3 of 19 part number description psc series positive switching regulator in case c03 .................... psc nominal output voltage in volt .............................. 3.3 to 48 nominal output current in ampere .......................... 6 to 12 operational ambient temperature range t a ?10 to 50 c ........................................................ -2 ?25 to 71 c (option) ........................................... -7 ?40 to 71 c ........................................................ -9 input filter (option) ............................................................ l inhibit input ...................................................................... i control input for output voltage adjustment 1 .................. r potentiometer 1 (option) ................................................... p thyristor crowbar (option) ............................................... c input/output voltage monitor (option) .............................. d rohs-compliant for all 6 substances ............................. g 1 feature r excludes option p and vice versa. example: psc126-7lipcg designates a positive switching regulator with a 12 v, 6 a output, ambient temperature range of ?25 to 71 c, input filter, inhibit input, output adjust potentiometer, thyristor crowbar, rohs-compliant psl series positive switching regulator in case l04 ..................... psl nominal output voltage in volt .............................. 5.1 to 48 nominal output current in ampere .......................... 6 to 12 operational ambient temperature range t a ?10 to 50 c ........................................................ -2 ?25 to 71 c (option) ........................................... -7 ?40 to 71 c ........................................................ -9 input filter (option) ............................................................ l inhibit input 1 ..................................................................... i control input for output voltage adjustment 1 .................. r thyristor crowbar (option) ............................................... c coding strip (option) ........................................................ k rohs-compliant for all 6 substances ............................. g 1 feature r excludes option i and vice versa. example: psl126-9lrcg designates a positive switching regulator with a 12 v, 6 a output, ambient temperature range of ?40 to 71 c, input filter, output voltage adjust, and thyristor crowbar, rohs-compliant. psc 12 6 -7 l i r p c d g psl 12 6 -7 l r c k g nfnd: not for new designs. preferred for new designs
psc, psl series data sheet positive switching regulators melcher the power partners. b cd20027-g rev a c 1, 12-apr-2018 page 4 of 19 produkt marking type designation, applicable safety approval marks, warnings, pin allocation, power-one patent nos., and company logo. identification of led and optional potentiometers. label with input voltage range, nominal output voltage and current, protection degree, batch no., serial no., and data code including production site, version (modification status), and date of production. customer-specific models positive switching regulator in case c03 .................... psc positive switching regulator in case l04 ..................... psl nominal output voltage in volt (without decimals) ......... 12 decimal places: 0.0 v ..................................................................... z 0.1 v ..................................................................... a 0.15 v ................................................................... b 0.2 v .................................................................... c 0.25 v .................................................................. d 0.3 v ..................................................................... e 0.4 v ..................................................................... f 0.5 v .................................................................... g 0.6 v .................................................................... h 0.7 v ..................................................................... j 0.8 v ..................................................................... k 0.9 v ..................................................................... l other ..................................................................... y output current in ampre ................................................ 3 identification character ............................................ a, b, .. temperature range and options .............................. -9 i rg psc 12 z 3 a -9 i rg
psc, psl series data sheet positive switching regulators melcher the power partners. b cd20027-g rev a c 1, 12-apr-2018 page 5 of 19 fig. 1 block diagram psc functional description the switching regulators are designed using the buck converter topology. the input is not electrically isolated from the output. during the on period of the switching transistor, current is transferred to the output, and energy is stored in the output choke. during the off period, this energy forces the current to continue flowing through the output, to the load, and back through the freewheeling diode. regulation is ac- complished by varying the duty cycle (on to off ratio) of the power switch.the regulator is equipped with a undervoltage lockout, but no overvoltage shutdown. these regulators are ideal for a wide range of applications, where input to output isolation is not necessary, or where already provided by an external front end (e.g., a transformer with rectifier). to optimize customer?s needs, additional options and accessories are available. fig. 2 block diagram psl control circuit option p go? vo+ gi? vi+ input filter option l g r i d i o v o i i v i option c fuse (option c) 03018b option d v t v o c i control circuit go? vo+ gi? vi+ input filter option l r (or i) (d) i o v o i i v i option c fuse (option c) 03021b 29 26 20 23 32 14 17 5 2 8 11 c i
psc, psl series data sheet positive switching regulators melcher the power partners. b cd20027-g rev a c 1, 12-apr-2018 page 6 of 19 electrical input data general conditions: t a = 25 c, unless t c is specified table 3a: input data input psc5a11-2 psc129-2 unit characteristics conditions min typ max min typ max v i operating input voltage i o = 0 ? i o nom 84 01 5 4 0v ? v io min min. diff. voltage v i ? v o t c min ? t c max 2.9 3 v i uvl undervoltage lockout 7.3 7.3 i i 0 no load input current i o = 0, v i min ? v i max 50 50 ma i inr p peak value of inrush current v i nom 150 150 a t inr r rise time of inrush current v i nom 55 s v i rfi en 55011, 0.15 ? 30 mhz v i nom , i o nom, a a class table 3b: input data input psc159-2 psc249-2 unit characteristics conditions min typ max min typ max v i operating input voltage i o = 0 ? i o nom 19 40 29 60 v ? v io min min. diff. voltage v i ? v o t c min ? t c max 45 v i uvl undervoltage lockout 7.3 12 i i 0 no load input current i o = 0, v i min ? v i max 50 50 ma i inr p peak value of inrush current v i nom 250 250 a t inr r rise time of inrush current v i nom 55 s v i rfi en 55011, 0.15 ? 30 mhz v i nom , i o nom a a class table 3c: input data input psc5a12 psc5a10 psc128 unit psl5a12 psl5a10 psl128 characteristics conditions min typ max min typ max min typ max v i operating input voltage i o = 0 ? i o nom 7 40 8 80 15 80 v ? v io min min. diff. voltage v i ? v o t c min ? t c max 1.9 2.9 3 v i uvl undervoltage lockout 6.3 7.3 7.3 i i 0 no load input current i o = 0, v i min ? v i max 45 40 35 ma i inr p peak value of inrush current v i nom without l 150 250 250 a wit h opt. l 250 350 350 t inr r rise time of inrush current without l 5 5 5 s with opt. l 25 25 25 v i rfi en 55011, 0.15 ? 30 mhz v i nom , i o nom b 1 b 1 b 1 class 1 with option l and an additional external input cap c ext = 120 f/100 v, e.g., nichicon or similar
psc, psl series data sheet positive switching regulators melcher the power partners. b cd20027-g rev a c 1, 12-apr-2018 page 7 of 19 table 3d: input data. general conditions as per table 3a input psc158 psc248 psc368 unit psl158 psl248 psl368 characteristics conditions min typ max min typ max min typ max v i operating input voltage i o = 0 ? i o nom 19 80 29 80 42 80 v ? v io min min. diff. voltage v i ? v o t c min ? t c max 45 6 v i uvl undervoltage lockout 7.3 12 19 i i 0 no load input current i o = 0, v i min ? v i max 35 35 40 ma i inr p peak value of inrush current v i nom without l 250 250 250 a with opt. l 350 350 350 t inr r rise time of inrush current without l 5 5 5 s with opt. l 25 25 25 v i rfi en 55011, 0.15 ? 30 mhz v i nom , i o nom b 1 b 1 b 1 class table 3e: input data input psc126 psc156 psa246 unit psl126 psl156 psc246 characteristics conditions min typ max min typ max min typ max v i operating input voltage i o = 0 ? i o nom 18 144 2 22 144 2 31 144 2 v ? v io min min. diff. voltage v i ? v o t c min ? t c max 67 7 v i uvl undervoltage lockout 12 15 19 i i 0 no load input current i o = 0, v i min ? v i max 35 35 35 ma i inr p peak value of inrush current v i nom without l 250 250 250 a with opt. l 350 350 350 t inr r rise time of inrush current without l 5 5 5 s with opt. l 25 25 25 v i rfi en 55011, 0.15 ? 30 mhz v i nom , i o nom b 1 b 1 b 1 class table 3f: input data input psc366 psc486 unit psl366 psl486 characteristics conditions min typ max min typ max v i operating input voltage 1 i o = 0 ? i o nom 44 144 2 58 144 2 v ? v io min min. diff. voltage v i ? v o t c min ? t c max 81 0 v i uvl undervoltage lockout 29 40 i i 0 no load input current i o = 0, v i min ? v i max 40 45 ma i inr p peak value of inrush current v i nom without l 250 250 a with opt. l 350 350 t inr r rise time of inrush current without l 5 5 s with opt. l 25 25 v i rfi en 55011, 0.15 ? 30 mhz v i nom , i o nom b 1 b 1 class 1 with option l and an additional external input cap c ext = 120 f/100 v, e.g., nichicon or similar 2 surges up to 156 v for 2 s
psc, psl series data sheet positive switching regulators melcher the power partners. b cd20027-g rev a c 1, 12-apr-2018 page 8 of 19 external input circuitry the sum of the lengths of the supply lines to the source or to the nearest capacitor 100 f (a + b) should not exceed 5 m, unless option l is fitted. this option is recommended in order to prevent power line oscillations and reduce superimposed interference voltages. fig. 3 switching regulator with long supply lines. electrical output data general conditions: ? t a = 25 c, unless t c is specified ? r-input open (or v o set to v o nom with option p) table 4a: output data output psc5a11 psc129 unit characteristics conditions min typ max min typ max v o output voltage v i nom , i o nom 5.05 5.15 11.6 12.4 v i o output current v i min ? v i max 0 11.0 0 9.0 a i ol output current limitation t c min ? t c max 11.0 14.3 9.0 11.7 v o output switching freq. v i nom , i o nom 55 150 mv pp voltage to ta l iec/en 61204 60 160 noise bw = 20 mhz ? v o v static line regulation v i min ? v i max , i o nom 100 240 mv ? v o l static load regulation v i nom , i o = 0 ? i o nom 100 120 v o d dynamic voltage deviat. v i nom 130 360 t d load recovery time i o nom ? 1 / 3 i o nom 50 60 s regulation iec/en 61204 vo temperature coefficient v i min ? v i max 0.02 0.02 %/k ? v o / ? t c ( t c min ? t c max ) i o = 0 ? i o nom table 4b output data. general conditions as per table 4a output psc159 psc249 unit characteristics conditions min typ max min typ max v o output voltage v i nom , i o nom 14.5 15.5 23.3 24.7 v i o output current v i min ? v i max 0 9.0 0 9.0 a i ol output current limitation t c min ? t c max 9.0 11.7 9.0 11.7 v o output switching freq. v i nom , i o nom 200 300 mv pp voltage to ta l iec/en 61204 210 210 noise bw = 20 mhz ? v o v static line regulation v i min ? v i max , i o nom 300 480 mv ? v o l static load regulation v i nom , i o = 0 ? i o nom 150 240 v o d dynamic voltage deviat. v i nom 450 700 t d load recovery time i o nom ? 1 / 3 i o nom 60 80 s regulation iec/en 61204 vo temperature coefficient v i min ? v i max 0.02 0.02 %/k ? v o / ? t c ( t c min ? t c max ) i o = 0 ? i o nom vi+ gi? vo+ go? a b + 04016a
psc, psl series data sheet positive switching regulators melcher the power partners. b cd20027-g rev a c 1, 12-apr-2018 page 9 of 19 table 4c: output data. general conditions as per table 4a output psc5a12 / psl5a12 psc5a10 / psl5a10 psc128 / psl128 unit characteristics conditions min typ max min typ max min typ max v o output voltage v i nom , i o nom 5.07 5.13 5.07 5.13 11.93 12.07 v i o output current v i min ? v i max 0 12.0 0 11.0 0 9.0 a i ol output current limitation t c min ? t c max 12.0 15.6 11.0 14.3 9.0 11.7 v o output switching freq. v i nom , i o nom 55 55 150 mv pp voltage to ta l iec/en 61204 60 60 160 noise bw = 20 mhz ? v o v static line regulation v i min ? v i max , i o nom 100 100 240 mv ? v o l static load regulation v i nom , i o = 0 ? i o nom 100 100 120 v o d dynamic voltage deviat. v i nom 150 130 360 t d load recovery time i o nom ? 1 / 3 i o nom 50 50 60 s regulation iec/en 61204 vo temperature coefficient v i min ? v i max 0.02 0.02 0.02 %/k ? v o / ? t c ( t c min ? t c max ) i o = 0 ? i o nom table 4d: output data. general conditions as per table 4a output psc158 /psl158 psc248/psl248 psc368/psl368 unit characteristics conditions min typ max min typ max min typ max v o output voltage v i nom , i o nom 14.91 15.09 23.68 24.14 35.78 36.22 v i o output current v i min ? v i max 0 8.0 0 8.0 0 8.0 a i ol output current limitation t c min ? t c max 8.0 10.4 8.0 10.4 8.0 10.4 v o output switching freq. v i nom , i o nom 50 90 55 150 80 190 mv pp voltage to ta l iec/en 61204 54 94 60 155 85 195 noise bw = 20 mhz ? v o v static line regulation v i min ? v i max , i o nom 70 100 150 220 200 270 mv ? v o l static load regulation v i nom , i o = 0 ? i o nom 30 45 120 160 125 160 v o d dynamic voltage deviat. v i nom 130 150 220 t d load recovery time i o nom ? 1 / 3 i o nom 60 80 100 s regulation iec/en 61204 vo temperature coefficient v i min ? v i max 0.02 0.02 0.02 %/k ? v o / ? t c ( t c min ? t c max ) i o = 0 ? i o nom table 4e: output data. general conditions as per table 4a output psc126/ psl126 psc156 / psl156 psc246 / psl246 unit characteristics conditions min typ max min typ max min typ max v o output voltage v i nom , i o nom 11.93 12.07 14.91 15.09 23.86 24.14 v i o output current v i min ? v i max 0 6.0 0 6.0 0 6.0 a i ol output current limitation t c min ? t c max 6.0 7.8 6.0 7.8 6.0 7.8 v o output switching freq. v i nom , i o nom 30 45 50 70 50 70 mv pp voltage to ta l iec/en 61204 34 49 54 74 54 75 noise bw = 20 mhz ? v o v static line regulation v i min ? v i max , i o nom 25 40 25 40 80 100 mv ? v o l static load regulation v i nom , i o = 0 ? i o nom 60 60 80 v o d dynamic voltage deviat. v i nom 150 130 360 t d load recovery time i o nom ? 1 / 3 i o nom 50 50 60 s regulation iec/en 61204 vo temperature coefficient v i min ? v i max 0.02 0.02 0.02 %/k ? v o / ? t c ( t c min ? t c max ) i o = 0 ? i o nom
psc, psl series data sheet positive switching regulators melcher the power partners. bcd20027-g rev ac, 16-aug-2017 page 10 of 19 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 50 60 70 80 90 c i o /i o nom t a 1.0 forced cooling t a min t c max convection cooling 0.9 05031a table 4f: output data. general conditions as per table 4a output psc366 / psl366 psc486 / psl486 unit characteristics conditions min typ max min typ max v o output voltage v i nom , i o nom 35.78 36.22 47.71 48.29 v i o output current v i min ? v i max 0 6.0 0 6.0 a i ol output current limitation t c min ? t c max 6.0 7.8 6.0 7.8 v o output switching freq. v i nom , i o nom 50 90 55 110 mv pp voltage to ta l iec/en 61204 54 94 95 115 noise bw = 20 mhz v o v static line regulation v i min ? v i max , i o nom 200 300 100 200 mv v o l static load regulation v i nom , i o = 0 ? i o nom 120 200 180 250 v o d dynamic voltage deviat. v i nom 140 150 t d load recovery time i o nom 1 / 3 i o nom 100 100 s regulation iec/en 61204 vo temperature coefficient v i min ? v i max 0.02 0.02 %/k v o / t c ( t c min ? t c max ) i o = 0 ? i o nom fig. 4 switching regulator with long supply lines. v od v od t d t d v o 1 % v o 1 % t t 10 s 10 s v o 0 0.5 1 i o /i o nom 05102c thermal considerations when a switching regulator is located in free, quasi-stationary air (convection cooling) at a temperature t a = 71 c and is operated at i o nom , the case temperature t c will be about 95 c after the warm-up phase, measured at the measuring point of case temperature t c ; see mechanical data . under practical operating conditions, the ambient temperature t a may exceed 71 c, provided that additional measures (heat sink, fan, etc.) are taken to ensure that the case temperature t c does not exceed its maximum value of 95 c. example: sufficient forced cooling allows t a max = 85 c. a simple check of the case temperature t c ( t c 95 c) at full load ensures correct operation of the system. fig. 5a output current derating versus temperature (models -2) 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 40 60 70 80 [c] i o /i o nom t a 0.9 1.0 05032a t c max 50 convection cooling t a min forced cooling fig. 5b output current derating versus temperature (models -7 or - 9)
psc, psl series data sheet positive switching regulators melcher the power partners. b cd20027-g rev a c 1, 12-apr-2018 page 11 of 19 auxiliary functions i inhibit (remote on / off) the inhibit input allows the switching regulator output to be disabled via a control signal. in systems with several converters, this feature can be used, for example, to control the activation sequence of the converters by a logic signal (ttl, c-mos, etc.). an output voltage overshoot will not occur, when switching on or off. note: with open i-input, the output is enabled. fig. 7 typical inhibit current i inh versus inhibit voltage v inh fig. 8 definition of i inh and v inh fig. 6 overload, short-circuit behaviour v o versus i o . output protection and short circuit behaviour a voltage suppressor diode, which in worst case conditions fails into a short circuit (or a thyristor crowbar, option c), protects the output against an internally generated over- voltage. such an overvoltage could occur due to a failure of either the control circuit or the switching transistor. the output 1.0 0.8 0.6 0.4 0 0.2 0.4 1.0 1.2 0.2 0.6 0.8 v o /v o nom i o /i o nom i o l 05033a i o nom 4 2 0 ?40 20 40 0 ?20 v 5 3 1 i inh [ma] v inh output on output off v inh = 0.8 v v inh = 2.4 v 06034a vi+ gi? go? i vo+ i inh v inh 06009a table 5: inhibit characteristics characteristics conditions min typ max unit v inh inhibit input voltage v o = on v i min ? v i max ?50 +0.8 v v o = off t c min ? t c max +2.4 +50 t r switch-on time v i = v i nom 130 ms t f switch-off time r l = v o nom / i o nom 25 i i inh input current when inhibited v i = v i nom 25 ma protection is not designed to withstand externally applied overvoltages. a constant current limitation circuit holds the output current almost constant, when an overload or a short circuit is applied to the output. it acts self-protecting and recovers automatically after removal of the overload or short circuit condition. parallel and series connection outputs of equal nominal voltages can be parallel-connected. however, the use of a single regulator with higher output power, is always the better solution. in parallel-connected operation, one or several outputs may operate continuously at their current limit knee-point which will cause an increase of the heat generation. consequently, the max. ambient temperature should be reduced by 10 c. outputs can be series-connected with any other regulator. in series-connection the maximum output current is limited by the lowest current limitation, but electrically separated source voltages are needed for each regulator.
psc, psl series data sheet positive switching regulators melcher the power partners. b cd20027-g rev a c 1, 12-apr-2018 page 12 of 19 0 t t 0 inhibit 1 0.1 1 v o /v o nom t r t f 06001 fig. 9 output response as a function of inhibit signal r output voltage adjust note: with open r input, v o v o nom . the output voltage v o can either be adjusted with an external voltage source ( v ext ) or with an external resistor ( r ext1 or r ext2 ). the adjustment range is 0 ? 108% of v o nom . the minimum differential voltage v io min between input and output (see electrical input data ) should be maintained. a) v o = 0 ? v o max , using v ext between r and g (go? for psl): v o v ext v ext 2.5 v ????? v o v o nom ????? v o nom 2.5 v caution: to prevent damage, v ext should not exceed 20 v, nor be negative. b) v o = 0 to v o nom , using r ext1 between r and g (go? for psl): 4000 v o v o nom r ext1 r ext1 ??????????? v o ?-??????????? v o nom ? v o r ext1 + 4000 c) v o = v o nom to v o max , using r ext2 between r and g (go? for psl): 4000 v o ( v o nom ? 2.5 v) r ext2 ?????????????????????????????? 2.5 v ( vo ? vo nom) v o nom 2.5 v r ext2 v o ???????????????????????????????????????? 2.5 v ( r ext2 + 4000 ) ? v o nom 4000 caution: to prevent damage, r ext2 should never be less than 47 k . fig. 10 voltage adjustment via r-input r vo+ go? + v ext ? 4 k v ref = 2.5 v control logic r ext1 r ext2 jm073 gi? vi+ + g led output voltage indicator an led indicator (yellow for psc, green for psl) is illuminated, when the output voltage is higher than approx. 3 v.
psc, psl series data sheet positive switching regulators melcher the power partners. b cd20027-g rev a c 1, 12-apr-2018 page 13 of 19 30 50 100 200 500 1000 mhz dbv/m 10 20 30 40 0 60 jm233 50 psc126-7ir; vi = 60 v, vo = 12 v; io = 6 a; r&s escs 30, 10 m, en 55022:2010, class b. ci = 120 + filter fp144; 20-nov-2015 electromagnetic compatibility (emc) electromagnetic immunity table 6: immunity type tests phenomenon standard class coupling value waveform source test in perf. level mode 1 applied imped. procedure oper. crit. 2 voltage surge 3 iec 60571-1 3 i/c, +i/? i 800 v p 100 s 100 1 pos. and 1 neg. yes b 1500 v p 50 s surge per 3000 v p 5 s coupling mode 4000 v p 1 s 7000 v p 100 ns electrostatic iec/en 4 3 contact discharge 8000 v p 3 1/50 ns 330 10 positive and yes a 5 discharge 61000-4-2 2 4 to case 4000 v p 4 10 negative discharges electromagnetic iec/en 3 3 antenna 10 v/m 3 am 80% 80 ? 1000 mhz yes a field 61000-4-3 2 4 3 v/m 4 1 kh z electrical fast iec/en 3 i/c, +i/?i 2000 v p bursts of 5/50 ns 50 60 s positive yes a 5 , b 4 transients/burst 61000 -4-4 5 khz rep. rate 60 s negative transients with transients per 15 ms burst coupling mode duration and a 300 ms period surges iec/en 2 3 i /c 1000 v p 1.2/50 s 12 / 9 f 5 pos. and 5 neg. yes b 5 61000-4-5 2 3 +i/?i 500 v p 2 / 18 f surges per coupling mode conducted iec/en 3 3 i, o, signal wires 10 vac 3 am 80% 150 0.15 ? 80 mhz yes a disturbances 61000 -4-6 2 4 3 vac 4 1 khz 1 i = input, o = output, c = case. 2 a = normal operation, no deviation from specifications, b = normal operation, temporary loss of function or deviation from specs possible 3 not applicable for -2 models 4 valid for -2 models 5 option l neccessary; with option c, manual reset might be necessary. electromagnetic emissions fig. 11a psc126-7ir: conducted disturbances at the input as per en 55011, at v i o = 12 v, i o external c i = 120 f + filter fp144. fig. 11b psc126-7ir: radiated disturbances in 10 m distance, as per en 55011, at v i = 60 v, v o = 12 v,i o 0 dbv 20 40 60 80 psc126-7ir; vi = 60 v, vo = 12 v; io = 6 a en 55022:2010, class b. ci = 120 + filter fp144; 20-nov-2015 0.2 0.5 1 2 5 10 20 mhz en 55011 a qp en 55011 a av jm232 = 60 v, v = 6 a. = 6 a.
psc, psl series data sheet positive switching regulators melcher the power partners. b cd20027-g rev a c 1, 12-apr-2018 page 14 of 19 0 dbv 20 40 60 80 psl36z8b-0lr; vi = 60 v, vo = 36 v; io = 8 a en 55011+a1:2010, group 1, class a. ci = 120 f. 19-may-2016 0.2 0.5 1 2 5 10 20 mhz en 55011 a av en 55011 a qp jm230 30 50 100 200 500 1000 mhz db v/m 10 20 30 40 0 60 vus emc labatory, ecsc 30, r&s, psl36z8b-0lr; vi = 60 v, vo = 36 v / 8 a testdistance 10 m, en 55011+a1:2010, group 1, class a, 19-may-2016 jm231 50 fig. 12a psl36z8b: conducted disturbances at the input according to en 55011, group 1, class a, at v i = 60 v, v o = 12 v, i o = 8 a; external c ext = 120 f. fig. 12b psl36z8b: radiated disturbances in 10 m distance, accord- ing to en 55011, at v i = 60 v, v o = 12 v, i o = 8 a; external c ext = 120 f. immunity to environmental conditions table 7: mechanical and climatic stress test method standard test conditions status cab damp heat iec/en 60068-2-78 t emperature: 40 2 c regulator steady state mil-std-810d section 507.2 relative humidity: 93 +2/-3 % not duration: 56 days operating ea shock iec/en 60068-2-27 acceleration amplitude: 50 g n = 490 m/s 2 regulator (half-sinusoidal) mil-std-810d section 516.3 bump duration: 11 ms operating number of bumps: 18 (3 each direction) fc vibration iec/en 60068-2-6 acceleration amplitude: 0.35 mm (10 ? 60 hz) regulator (sinusoidal) mil-std-810d section 514.3 5 g n = 49 m/s 2 (60 ? 2000 hz) operating frequency (1 oct/min): 10 ? 2000 hz test duration: 7.5 h (2.5 h each axis) fda random vibration iec/en 60068-2-35 acceleration spectral density: 0.05 g 2 /hz regulator wide band din 40046 part 23 frequency band: 20 ? 500 hz operating reproducibility acceleration magnitude: 4.9 g n rms high test duration: 3 h (1 h each axis) kb salt mist, cyclic iec/en 60068-2-52 concentration: 5% (30 c) regulator (sodium chloride duration: 2 h per cycle not nacl solution) storage: 40 c, 93% rel. humidity operating storage duration: 22 h per cycle number of cycles: 3 temperatures table 8: temperature specifications, valid for an air pressure of 800 - 1200 hpa (800 - 1200 mbar) temperature -2 -7 (option) -9 characteristics conditions min max min max min max unit t a ambient temperature 1 regulator ?10 50 ?25 71 ?40 71 c t c case temperature operating ?10 80 ?25 95 ?40 95 t s storage temperature 1 non operational ?25 100 ?40 100 ?55 85 1 see thermal considerations and overtemperature protection.
psc, psl series data sheet positive switching regulators melcher the power partners. b cd20027-g rev a c 1, 12-apr-2018 page 15 of 19 127 159.4 168.5 173.7 0.5 100 (19.1) 6.4 11 measuring point of case temperature t c 2 32 4.9 ?5.2 green led potentio- meter (opt. p) mounting plane of connector h11 ?3 0.9 17.4 10.9 1.5 20.32 min. 5 potentiometer (option d) threads m3; 4 mm deep (for mounting screws) 107 1 88 99 9.5 36.5 0.8 100 0.5 35 26.6 34.3 40.6 m2.5 20 0.5 4 te 6 te 2 te 4 te 09027a mechanical data psc models dimensions in mm. fig. 13 case c03, weight 440 g aluminium, black finish and self cooling european projection psl models the regulators are designed to be inserted into a din-rack according to iec 60297-3. dimensions in mm. fig. 14 case l04, weight 550 g aluminium, fully enclosed, black finish ep powder-coated, and self cooling gi? go? vo+ i vi+ d v o v t gr 7.5 27.5 18.5 11.3 40 7.5 10 7.5 10 (14) 7.5 10 2 4.3 min. 8 5 0.5 144 12.5 1 43 1 (45) 88 1 7 2 151 1 32.2 0.5 2.8 x 0.8 8.1 1 6.35 1 6.3 x 0.8 distance between m4 mounting screws measuring point of case temperature t c yellow led output voltage indicator potentiometer (option p) potentiometer (option d) 09023a v o reliability table 9: typical mtbf and device hours mtbf ground benign ground fixed ground mobile device hours 1 mtbf acc. to mil-hdbk-217f t c = 40 c t c = 40 c t c = 70 c t c = 50 c 660 000 h 143 000 h 81 000 h 68 000 h 2 800 000 h 1 statistical values, based on an average of 4300 working hours per year and in general field use
psc, psl series data sheet positive switching regulators melcher the power partners. b cd20027-g rev a c 1, 12-apr-2018 page 16 of 19 safety and installation instructions pin allocation the pins of psc models are printed onto the case of the regulator. the pin allocation of psl models is shown in the table below: table 10: h11 connector pin allocation (psl models) electrical determination type h11 pin no. design. r-input (or inhibit input) 1 2 r (i) undervoltage monitor (option d) 5 d output voltage (negative) 8 go? output voltage (negative) 11 go? output voltage(positive) 14 vo+ output voltage (positive) 17 vo+ input voltage (negative) 20 gi? input voltage (negative) 23 gi? input voltage (positive) 26 vi+ input voltage (positive) 29 vi+ protective earth pe (leading pin) 32 1 r-input is used for the inhibit function. consequently, option r and i exclude each other. installation instruction installation must strictly follow the national safety regulations in compliance with the enclosure, mounting, creepage, clearance, casualty, markings, and segregation requirements of the end-use application. check for hazardous voltages before connecting. connections of psc models can be made using fast-on or soldering technique. psl models should be plugged into a din-rack the input and the output circuit are not separated, i.e., the negative path is internally interconnected. the regulators should be connected to a secondary circuit. do not open the regulator ! ensure that a unit failure (e.g., by an internal short-circuit) does not result in a hazardous condition. cleaning liquids in order to avoid possible damage, any penetration of cleaning fluids must be prevented, since the power supplies are not hermetically sealed. protection degree the protection degree is ip 30 (ip 20, if equipped with option p, d, or d1). it applies only, if the regulator is plugged-in or the matching female connector is properly attached. standards and approvals all switching regulators have been approved according to the latest edition of iec/en 60950-1 and ul/csa 60950-1. the regulators have been evaluated for: building in the use in a pollution degree 2 environment connecting the input to a secondary circuit, which is subject to a maximum transient rating of 1500 v. the switching regulators are subject to manufacturing surveillance in accordance with the above mentioned standards and with iso 9001:2008. isolation the resistance of the protective earth connection (max. 0.1 ? ) is tested only for psl models. psc models: electric strength test voltage between input connected with output against case: 2200 vdc, 1 s (for some psc models only with version v103 or higher). psl models: the electric strength between the input, intercon- nected with the output, and the case is tested with 500 vdc (all -2 models), 750 vdc (models with v i max = 80 v), or 1500 vdc (models with v i max = 144) during 1 s. these tests are performed in the factory as routine test in accordance with en 50514 and iec/en 60950. the electric strength test should not be repeated by the customer. railway application the regulators have been developed observing the railway standards en 50155 and en 50121. all boards are coated with a protective lacquer.
psc, psl series data sheet positive switching regulators melcher the power partners. b cd20027-g rev a c 1, 12-apr-2018 page 17 of 19 description of options -7 temperature range this option defines restricted temperature range as specified in table 8 (not for new designs). p potentiometer note: option p is not recommended for new designs and not for several regulators operating in parallel connection. option p excludes the r function; the r-input (pin 16) should be left open-circuit. the output voltage v o can be adjusted in the range 90 ? 110% of v o nom . however, the minimum differential voltage ? v i o min between input and output specified in electrical input data should be respected. l input filter option l is recommended to reduce superimposed inter- ference voltages and to prevent oscillations, if input lines exceed the length of approx. 5 m in total. the fundamental wave (approx. 120 khz) of the reduced interference voltage between vi+ and gi? has, with an input line inductance of 5 h, a maximum magnitude of 4 mvac. the input impedance of the switching regulator at 120 khz is about 3.5 ? . the harmonics are small in comparison with the fundamental wave. with option l, the maximum permissible additionally super- imposed ripple v i of the input voltage (rectifier mode) at a specified input frequency f i has the following values: v i max = 10 v pp at 100 hz or v pp = 1000 hz/ f i 1v c thyristor crowbar option c protects the load against power supply malfunction. it is not designed to sink external currents. a fixed-value monitoring circuit checks the output voltage v o . when the trigger voltage v o c is reached, the thyristor crowbar triggers and disables the output. it can be deactivated by removal of the input voltage. in case of a defect switching transistor, the internal fuse prevents excessive current. type of the fuse: regulators with i o nom = 6 a: 6.3 a / 250 v, slow, 5 20 mm regulators with i o nom > 6 a: 16 a / 250 v, slow, 5 20 mm note : the crowbar can be reset by removal of the input voltage only. the inhibit signal cannot deactivate the thyristor. fig. 15 test circuit with definition of voltage v d and current i d fig. 16 definition of v t and v h d input undervoltage monitor terminal d and go? are connected to a normally conducting field effect transistor (jfet). a 0.5 w zener diode protects against overvoltages. the switching characteristics of the option d output are shown in fig. 16. the voltage v t can be externally adjusted by a trim potentiometer. the hysteresis v h of v t is <2%. pin d stays low for a minimum time t low min , in order to prevent any oscillation. v t table 11: crowbar trigger levels characteristics conditions v o = 5.1 v v o = 12 v v o = 15 v v o = 24 v v o = 36 v unit min typ max min typ max min typ max min typ max min typ max v o c trigger voltage t c min ? t c max 5.8 6.8 13.5 16 16.5 19 27 31 40 45 v v i min ? v i max t s delay time i o = 0 ? i o nom 1.5 1.5 1.5 1.5 1.5 s vi + gi ? go ? 8.2 v d v d +5 v 100 pf i d 10 k? jfet v t 11025 v d v d high v d low v t v i v h 11026 table 12: data of option d characteristics conditions psc/ psl unit min typ max v d low low impedance v i < v t , i d 2.5 ma 0.8 v v d high high impedance v i > v t + v h , 4.75 i d > 25 ma t low min min. durat. v d low 30 ms t d f response to v d low 1ms i d current through d 20 ma
psc, psl series data sheet positive switching regulators melcher the power partners. b cd20027-g rev a c 1, 12-apr-2018 page 18 of 19 can be set to a value between v i min and v i max . note that the jfet becomes conductive, when v d exceeds approx. 7 v. k connector coding strip for psl models only. g rohs compliance models with g are rohs-compliant for all six substances. accessories a variety of electrical and mechanical accessories are available including: battery sensor [s-ksmh...] for using the regulator as battery charger. different cell characteristics can be selected; see fig. 16 and the temperature sensors data sheet bcd20024 on our web site. accessories suitable for psc models pcb isolation p ads for easy and safe pcb-mounting; see fig. 18. solder-tags for direct mounting of the regulator to a pcb board; see fig. 19. ring core chockes for ripple and interference reduction; see fig. 20 different filters; see fig. 21. input filters fp; see table 13 and fig. 22. fig . 17 battery temperature sensors european projection 65 l l: 2 m standard length other cable lengths on request adhesive tape 30 15 09125 fig. 18 isolation pad hzz01206-g 0.3 mm thick fig. 19 solder tag hzz01204-g. delivery content: 10 pieces 1 5.08 17 5 12035a 7 5 1 jm174 71 101 35.5 107 ? 4.2 fig. 21 different filters
psc, psl series data sheet positive switching regulators melcher the power partners. b cd20027-g rev a c 1, 12-apr-2018 page 19 of 19 fig. 24 different front panels accessories suitable for psl models: various mating connectors h11, including screw, solder, fast-on, or press-fit terminals; see fig. 20 and the data sheet casette style mating connectors bcd20022 on our web site. fig. 23 different mating connectors, including code key system nuclear and medical applications - these products are not designed or intended for use as critical components in life support s ystems, equipment used in hazardous environments, or nuclear control systems. technical revisions - the appearance of products, including safety agency certifications pictured on labels, may change dependi ng on the date manufactured. specifications are subject to change without notice. c opyright ? 2018, bel power s olutions inc. all ri ghts reserved. belfuse.com/power-solutions table 13: input filters fp. t a = 25c unless otherwise specified characteristics conditions fp 38 2 fp 80 fp 144 unit min typ max min typ max min typ max i fn rated current 1 l = 0.75 l o 442a v fn rated voltage t c min ? t c max 5 40 5 80 15 144 vdc r f ohmic resistance 18 20 22 18 20 22 90 95 100 m ? l o no load inductance i l = 0, t c min ? t c max 30 34 38 30 34 38 88 100 112 h t a ambient temperature i f = i fn ?40 80 ?40 80 ?40 95 c t c case temperature ?40 92 ?40 92 ?40 98 t s storage temperature ?40 100 ?40 100 ?55 100 1 for currents i f > 4 a the following derating takes place: t a max = 100 ? 1.3 i f 2 [c], t c max = 100 ? 0.49 i f 2 [c]. 2 fp 38 is obsolete. 37.8 0.5 ?1.3 1 m 2.5 0.9 x 0.56 25 0.5 min. 4.5 1 3.22 0.5 (3.22) 5.08 3.66 10.16 15.24 (3.66) 16.6 1 4 1 2 3 4 6.8 1 5.08 5.08 12016a positioning pin positioning pin fig. 22 mechanical data of fp filters. weight approx. 30 g european projection code key system for connector coding. coding wedges hzz00202-g (5 pie- ces); see fig. 23. v arious front panels for 19" racks with 3u heigth, schroff or intermas for additional accessory product information, see the accessory data sheet listed with each product series or individual model at our web site.

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