Wa AC-DC PFC Converers 4.4" 3 U Feaures RoHS lead-free-solder and lead-solder-exemped producs are available. Class I equipmen Power facor >.93, harmonics IEC/EN 6-3-2 Immuniy according o IEC/EN 6-4-2, -3, -4, -5, -6, -8, -9 Complian wih EN 555, EN 52-4, EN 45545 (version V8 or laer) High efficiency Inpu over- and undervolage lockou Adjusable oupu volage wih remoe on/off or 2 oupus: SELV, no load, overload, and shorcircui proof Recangular curren limiing characerisic PCBs proeced by lacquer Very high reliabiliy 6 2.4" 2 TE 68 6.6" Safey-approved according o IEC/EN 695-, UL/CSA 695-2 nd Ed. Descripion The LS4/5 Series of AC-DC converers represens a flexible range of power supplies for use in advanced elecronic sysems. Feaures include full power facor correcion, good hold-up ime, high efficiency and reliabiliy, low oupu volage noise, and excellen dynamic response o load/line changes. The converers are proeced agains surges and ransiens occurring a he source lines. Inpu over- and undervolage lockou circuiry disables he oupus, when he inpu volage is ouside of he specified range. Inpu inrush curren limiaion is included for prevening circui breakers and fuses from ripping a swich-on. All oupus are overload, open- and shor-circui proof and proeced by a buil-in suppressor diode. The oupus can be inhibied by a logic signal applied o connecor pin 8. If he inhibi funcion is no used, pin 8 mus be conneced wih pin 4 o enable he oupus. LED indicaors display he saus of he converer and allow visual monioring of he sysem a any ime. Full inpu o oupu, inpu o case, oupu o case and oupu o oupu isolaion is provided. The converers are designed and buil according o he inernaional safey sandards IEC/EN 695-2 nd Ed. They have been approved by he safey agencies Nemko and CSA (for USA and Canada). The case design allows for operaion a nominal load up o 7 C in a free air ambien emperaure. If forced cooling is provided, he ambien emperaure may exceed 7 C bu he case emperaure mus remain below 95 C under all condiions. Table of Conens Page Page Descripion... Model Selecion... 2 Funcional Descripion... 4 Elecrical Inpu Daa... 5 Elecrical Oupu Daa... 7 Auxiliary Funcions... Elecromagneic Compaibiliy (EMC)... 5 Environmenal Condiions... 6 Mechanical Daa... 7 Safey and Insallaion Insrucions... 9 Descripion of Opions... 2 Accessories... 27 Copyrigh 26, Bel Power Soluions Inc. All righs reserved. BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page of 28
Wa AC-DC PFC Converers An inernal emperaure sensor generaes an inhibi signal, which disables he oupus, when he case emperaure T C exceeds he limi. The oupus auomaically recover, when he emperaure drops below he limi. Various opions including baery chargers are available o adap he converers o individual applicaions. The converers may eiher be plugged ino 9" rack sysems according o IEC 6297-3, or be chassis mouned. Imporan: These producs are inended o replace he LS and LS2 models in order o comply wih IEC/EN 6-3-2. For applicaions wih DC inpu or main frequencies oher han 5/6 Hz, he LS and LS2 models are sill available. Model Selecion Non-sandard inpu/oupu configuraions or special cusomer adapaions are available on reques. Table : Model ypes LS Oupu Oupu 2 Oper. inpu volage range Efficiency Opions V o nom I o nom V o nom I o nom V i min V i max η min [VDC] [A] 2 [VDC] [A] 85 264 VAC [%] 5. 6 LS4-9ERG 77-7, -7E, P, D 2, V 2, T, B, B, non-g 2 8 LS43-9ERG 8-7, -7E, P, D, T, B, B, non-g 5 6.5 LS45-9ERG 83 24 4.2 LS46-9ERG 83 24 4 LS532-9ERG 8 3 3.2 LS554-9ERG 8 48 2 LS566-9ERG 8 2 4 2 3 4 LS532-9ERG 8 5 3.2 5 3 3.2 LS554-9ERG 8 24 2 24 3 2 LS566-9ERG 8 Min. efficiency a V i nom, I o nom and T A = 25 C. Typical values are approximaely 2% beer. 2 Opion V for LS4 models wih 5. V oupu; excludes opion D 3 Second oupu semi-regulaed Table 2: Baery charger models Nom. oupu values Oupu volage range Oper. inpu volage range Efficiency Opions V o nom I o nom V o V i min V i max η min [VDC] [A] [VDC] 85 264 VAC [%] 2.84 7 2.62 4.2 LS474-9ERG 8-7, -7E, D, T, B, B, non-g 25.68 2 3.4 25.25 28.25 LS574-9ERG 8 5.36 3.7 5.5 56.5 LS574-9ERG 8 Min. efficiency a V i nom, I o nom and T A =25 C. Typical values are approximaely 2% beer. 2 Boh oupus conneced in parallel 3 Boh oupus conneced in series NFND: No for new designs Preferred for new designs BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page 2 of 28
Wa AC-DC PFC Converers Par Number Descripion LS 5 5 4-9 E R D3 T B G Operaing inpu volage V i : 85 264 VAC... LS Number of oupus... 4, 5 Single oupu models: Nominal volage oupu (main oupu), V o nom 5. V...,, 2 2 V... 3 5 V... 4, 5 24 V... 6 Oher volages... 7, 8 Oher specificaions (single oupu models)... 99 Double oupu models: Nominal volage oupu and 2 2 V, 2 V... 2 5 V, 5 V... 4 24 V, 24 V... 6 Oher specificaions or addiional feaures... 2 99 Operaional ambien emperaure range T A : 25 o 7 C... -7 4 o 7 C... -9 Oher... -, -5, -6 Auxiliary funcions and opions: Inrush curren limiaion... E 2 Oupu volage conrol inpu... R 3 Poeniomeer (oupu volage adjusmen)... P 3 Undervolage monior (D DD, o be specified)... D 4 ACFAIL signal (V2, V3, o be specified)... V 4 Curren share... T Cooling plae sandard case... B or B Cooling plae for long case 22 mm... B2 RoHS-complian for all 6 subsances...g Cusomer-specific models 2 Opion E mandaory for all -9 models 3 Feaure R excludes opion P and vice versa. Opion P is no available for baery charger models. 4 Opion D excludes opion V and vice versa; opion V is available for 5. V models only. Noe: The sequence of opions mus follow he order above. This par number descripion is descripive only; i is no ineded for creaing par numbers. NFND: No for new designs Preferred for new designs Example: LS554-9ERD3TBG: Power facor correced AC-DC converer, operaing inpu volage range 85 264 VAC, 2 elecrically isolaed oupus, each providing 5 V, 3.2 A, equipped wih inrush curren limier, R-inpu o adjus he oupu volages, undervolage monior D3, curren share feaure, a cooling plae B, RoHS-complian. Produc Marking Basic ype designaion, applicable approval marks, CE mark, warnings, pin designaion, paens and produc logo, idenificaion of LEDs, es sockes, and poeniomeer. Specific ype designaion, inpu volage range, nominal oupu volages and currens, degree of proecion, bach no., serial no., and daa code including producion sie, modificaion saus and dae of producion. BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page 3 of 28
Funcional Descripion The inpu volage is fed via an inpu fuse, an inpu filer, a recifier, and an inrush curren limier o a boos converer. This sep-up converer provides a sinusoidal inpu curren (IEC/EN 6-3-2, class D equipmen) and charges he bulk capacior C i o approx. 37 VDC. This capacior sources a single ransisor forward converer and provides he power during he hold-up ime. Each oupu is powered by a separae secondary winding of he main ransformer. The resulan volages are recified and 26 N~ 28 L~ 3 32 24 Fuse Inpu filer C Y C Y Bridge reifier 2 Boos converer (approx. khz) 3 C i + Forward converer (approx. 8 khz) S Series wih PFC Daa Shee Wa AC-DC PFC Converers heir ripple smoohed by a power choke and an oupu filer. The conrol logic senses he main oupu volage V o and generaes, wih respec o he maximum admissible oupu currens, he conrol signal for he swiching ransisor of he forward converer. The second oupu of double oupu models is racking o he main oupu, bu has is own curren limiing circui. If he main oupu volage drops due o curren limiaion, he second oupu volage will fall as well and vice versa. C Y C Y P Conrol circui Oupu filer 3c 6 R 8 i 2 D/V 22 T 2 S+ 4 Vo+ 6 8 Vo 4 S Fig. Block diagram of single-oupu models + Transien suppressor (VDR) 2 Inrush curren limier (NTC, only models wih T A min = 25 C ) or opion E 3 Bulk capacior C b ; bulk volage approx. 37 V P 32c N~ L~ 26 28 3 32 24 Fuse Inpu filer C Y C Y Bridge reifier 2 Boos converer (approx. khz) 3 C i + Forward converer (approx. 8 khz) C Y Conrol circui Oupu filer Oupu 2 filer 6 8 2 22 2 Vo+ 4 4 6 8 R i D T Vo Vo2+ Vo2 Fig. 2 Block diagram of double-oupu models + Transien suppressor (VDR) 2 Inrush curren limier (NTC, only models wih T A min = 25 C ) or opion E 3 Bulk capacior C b ; bulk volage approx. 37 V BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page 4 of 28
Wa AC-DC PFC Converers Elecrical Inpu Daa General Condiions T A = 25 C, unless T C is specified. Pin 8 conneced o pin 4, R inpu no conneced, V o adjused o V o nom (opion P) Sense line pins S+ and S conneced o Vo+ and Vo, respecively. Table 3: Inpu daa Inpu LS Uni Characerisics Condiions min yp max V i Raed inpu volage range I o = I o nom 24 VAC V i op Operaing inpu volage range T C min T C max 85 264 V i nom Nominal inpu volage 5 6 Hz 23 I i Inpu curren V i nom, I 2 o nom.55 A P i No-load inpu power V i min V i max, I o = 7.5 9 W P i inh Idle inpu power conv. inhibied 2 3 R i Inpu resisance 48 mω R NTC NTC resisance (see fig. 3) 3 conv. no operaing 32 4 C i Inpu capaciance 8 2 µf V i RFI Conduced inpu RFI EN 5522 B Radiaed inpu RFI V i nom, I o nom B V i abs Inpu volage limis 283 VAC wihou damage 4 4 VDC 4 Nominal frequency range: 5 6 Hz, operaing frequency range 47 63 Hz 2 Wih double-oupu models, boh oupus loaded wih I o nom 3 Valid for -7 versions wihou opion E. This is he NTC resisance value a 25 C and applies o cold converers. Subsequen swich-on/ off cycles increase he inrush curren peak value. 4 Operaion wih DC inpu volage is no specified and no recommended. Inpu Transien Proecion A VDR ogeher wih he inpu fuse and a symmerical inpu filer form an effecive proecion agains high inpu ransien volages. Inpu Fuse A fuse mouned inside he converer in series o he phase line proecs agains severe defecs. A second fuse in he neural line may be necessary in cerain applicaions; see Insallaion Insrucions. Fuse specificaion: Slow-blow, 4 A, 25 V, 5 2 mm. inrush curren value by a facor of 5 o o proec connecors and swiching devices from damage. Subsequen swich-on cycles wihin shor periods will cause an increase of he peak inrush curren value due o he warming-up of he NTC resisor. The inrush curren peak value (iniial swich-on cycle) can be deermined by following calculaion: V i 2 I inr p = (R s ex + R i + R NTC ) 4b Inpu Under-/Overvolage Lockou If he inpu volage remains below approx. 65 VAC or exceeds V i abs, an inernally generaed inhibi signal disables he oupu(s). Do no check he overvolage lockou funcion! If V i is below V i min, bu above he undervolage lockou level, he oupu volage may be below he value specified in he ables Elecrical Oupu Daa. Inrush Curren Limiaion The -7 models wihou opion E incorporae an NTC resisor in he inpu circuiry, which a iniial urn-on reduces he peak V i R s ex I inr p R i R NTC Fig. 3 Equivalen circui diagram for inpu impedance. C b + BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page 5 of 28
Wa AC-DC PFC Converers I inr [A] Fig. 4 Theoreical inpu inrush curren versus ime a V i = 255 V and 5 V, R ex = for models wihou opion E l i [A] 3 2.5 2.5 5.5 5 45a 5 2 25 3 Fig. 5 Inpu curren versus inpu volage a I o nom V i [V] Power Facor and Harmonics Power facor correcion is achieved by conrolling he inpu curren waveform synchronously wih he inpu volage waveform. The power facor conrol is acive under all operaing condiions. The harmonic disorion is well below he limis specified in IEC/EN 6-3-2, class D. Power facor.95.9.85.8.75 454LS..5 ms V i = 85 VAC Fig. 6 Power facor versus oupu curren (LS46-7R) LS V i = 23 VAC PF-LS46.7.2.4.6.8 I o /I o nom ma/w 4 3.5 3 2.5 2.5.5 Fig. 7 Harmonic currens a he inpu (LS46, V i = 23 VAC, I o = I o nom ). khz 8 7 6 5 4 3 2 Fig. 8 Typ swiching frequency versus load. The boos converer a he inpu sage operaes wih a consan swiching frequency of khz. Hold-up Time [ms] 8 6 4 2 8 6 4 2 3 5 7 9 3.2.4.6.8 V i = 23 VAC V i = 85 VAC 58b Fig. 9 Hold-up ime versus oupu power (LS46-7R) Harm-LS46.2 LS46-hu I o /I o nom.2.4.6.8 Io/Io nom Harm. BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page 6 of 28
Wa AC-DC PFC Converers Efficiency Efficiency.9.8.7.6.5.4.3 Fig. Efficiency versus oupu power. V i = 23 V V i = 85 V 54a.2.4.6.8 I o /I o nom Elecrical Oupu Daa General Condiions: T A = 25 C, unless T C is specified. Pin 8 (i) conneced o pin 4 (S or Vo ), R inpu no conneced, V o adjused o V o nom (opion P), Sense line pins 2 (S+) and 4 (S ) conneced o pins 4 (Vo+) and 8 (Vo ), respecively. Table 4a: Oupu daa of single-oupu models LS4 LS 43 / 474 5 LS45 LS46 Uni Oupu 5. V 2 V 5 5 V 24 V Characerisics Condiions min yp max min yp max min yp max min yp max V o Oupu volage V i nom, I o nom 5.7 5.3.93 5 2.7 5 4.9 5.9 23.86 24.4 V V o BR Overvolage proecion 7.6 5.2/7 5 9.6 28.5 (supressor diode) 6 I o nom Oupu curren nom. V i min V i max 6 8 /7 5 6.5 4.2 A T C min T C max I ol Oupu curren limi V i min V i max 6.2 8.2/8 5 6.7 4.4 v o Oupu Low frequency V i nom, I o nom 2 2 2 2 mv pp noise 3 Swiching frequ. BW = 2 MHz 5 5 5 Toal incl. spikes 5 4 4 4 V o u Saic line regulaion V i min V i max ±5 ±2 ±5 ±24 mv wih respec o V i nom I o nom V o I Saic load regulaion V i nom 2 25 3 4 (. ) I o nom v o d Dynamic Volage V i nom ± ± ± ± load deviaion 2 I o nom /2 I o nom d regula. 2 Recovery ime 2.3.4.4.3 ms α vo Temperaure coefficien T C min T Cmax ±.2 ±.2 ±.2 ±.2 %/K of oupu volage 4 I o nom If he oupu volages are increased above V o nom hrough R-inpu conrol, opion P seing, remoe sensing or opion T, he oupu currens should be reduced accordingly so ha P o nom is no exceeded. 2 See Dynamic load regulaion (fig. 3) 3 Measured according o IEC/EN 624 wih a probe according o annex A 4 For baery charger applicaions, a defined negaive emperaure coefficien can be provided by using a emperaure sensor (see Accessories), bu we recommend choosing special baery charger models. 5 Especially designed for baery charging using he emperaure sensor (see Accessories). V o is se o 2.84 V ±% (R-inpu open). 6 Breakdown volage of he incorporaed suppressor diode ( ma; ma for 5 V oupu). Exceeding V o BR is dangerous for he suppressor diode. BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page 7 of 28
Wa AC-DC PFC Converers Table 4b: Oupu daa of double-oupu models LS532 LS554 Uni Oupu 2 2 V 2 5 V Characerisics Condiions Oupu Oupu 2 Oupu Oupu 2 min yp max min yp max min yp max min yp max V o Oupu volage V i nom, I o nom.93 2.7.82 2.8 4.9 5.9 4.78 5.22 V V o P Overvolage proecion 5.2 5.2 9.6 9.6 (supressor diode) 8 I o nom Oupu curren nom 2 V i min V i max 4 4 3.2 3.2 A T C min T C max I ol Oupu curren limi 6 V i min V i max 4.2 4.2 3.4 3.4 uv o Oupu Low frequency V i nom, I o nom 3 3 3 3 mv pp noise 3 Swiching frequ. BW = 2 MHz 2 2 Toal incl. spikes 4 4 5 5 V o u Saic line regulaion V i min V i max ±2 6 ±5 6 mv wih respec o V i nom I o nom V o I Saic load regulaion V i nom 4 6 5 6 (. ) I o nom v o d Dynamic Volage V i nom ± ±5 ± ±5 load deviaion 4 I o nom /2 I o nom d regula. 3 Recovery ime 4 /2 I o2 nom.3.4 ms α vo Temperaure coefficien T C min T C max ±.2 ±.2 %/K of oupu volage 5 I o nom Table 4c: Oupu daa of double-oupu models LS566 / 574 7 Uni Oupu 2 24 V / 25.68 V 7 Characerisics Condiions Oupu Oupu 2 min yp max min yp max V o Oupu volage V i nom, I o nom 23.86 7 24.4 7 23.64 7 24.36 7 V V o P Overvolage proecion 28.5/34 7 28.5/34 7 (supressor diode) I o nom Oupu curren nom 2 V i min V i max 2/.7 7 2/.7 7 A T C min T C max I ol Oupu curren limi 6 V i min V i max 2./2 7 2./2 7 uv o Oupu Low frequency V i nom, I o nom 3 3 mv pp noise 3 Swiching frequ. BW = 2 MHz 5 5 Toal incl. spikes 4 4 V o u Saic line regulaion V i min V i max ±3 6 mv wih respec o V 3 i nom I o nom V o I Saic load regulaion V i nom 4 6 (. ) I o nom v o d Dynamic Volage V i nom ± ±5 load deviaion 4 I o nom /2 I o nom regula. 3 Recovery ime 4 /2 I o2 nom.3 ms d Same condiions for boh oupus 2 If he oupu volages are increased above V o nom via R-inpu conrol, opion P seing, remoe sensing or opion T, he oupu currens should be reduced accordingly so ha P o nom is no exceeded. 3 Measured according o IEC/EN 624 wih a probe annex A 4 See Dynamic load regulaion (fig. 3) 5 For baery charger applicaions a defined negaive emperaure coefficien can be provided by using a emperaure sensor, see Accessories. 6 See Oupu Volage Regulaion of Double-Oupu Models 7 Especially designed for baery charging using he baery emperaure sensor (see Accessories). V o is se o 25.68 V ±% (R-inpu open). 8 Breakdown volage of he incorporaed suppressor diodes ( ma). Exceeding V o BR is dangerous for he suppressor diodes. α vo Temperaure coefficien T C min T C max ±.2 %/K of oupu volage 5 I o nom BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page 8 of 28
Wa AC-DC PFC Converers Thermal Consideraions If a converer is locaed in free, quasi-saionary air (convecion cooling) a he indicaed maximum ambien emperaure T A max (see able Temperaure specificaions) and is operaed a is nominal inpu volage and oupu power, he emperaure measured a he Measuring poin of case emperaure T C (see Mechanical Daa) will approach he indicaed value T C max afer he warm-up phase. However, he relaionship beween T A and T C depends heavily on he condiions of operaion and inegraion ino a sysem. The hermal condiions are influenced by inpu volage, oupu curren, airflow, and emperaure of surrounding componens and surfaces. T A max is herefore, conrary o T C max, an indicaive value only. Cauion: The insaller mus ensure ha under all operaing condiions T C remains wihin he limis saed in he able Temperaure specificaions. Noes: Sufficien forced cooling or an addiional hea sink allows T A o be higher han 7 C (e.g. 85 C), if T C max is no exceeded. For -7 or -9 models a an ambien emperaure T A of 85 C wih only convecion cooling, he maximum permissible curren for each oupu is approx. 4% of is nominal value as per he figure below. I o /I o nom..8.6.4 Convecion cooling Forced cooling 589a T C max Oupu Proecion Each oupu is proeced by a suppressor diode agains overvolage, which could occur due o a failure of he conrol circui. In such a case, he suppressor diode becomes a shor circui. The suppressor diodes may smooh shor overvolages resuling from dynamic load changes, bu hey are no designed o wihsand exernally applied overvolages. A shor circui a any of he wo oupus will cause a shu-down of he oher oupu. A red LED indicaes an overload condiion. Noe: V o BR is specified in Elecrical Oupu Daa. If his volage is exceeded, he suppressor diode generaes losses and may become a shor circui. Parallel or Series Connecion of Converers Single- or double-oupu models wih equal oupu volage can be conneced in parallel using opion T (curren sharing). If he T pins are inerconneced, all converers share he oupu curren equally. Single-oupu models and/or main and second oupus of double-oupu models can be conneced in series wih any oher (similar) oupu. Noes: Parallel connecion of double-oupu models should always include boh, main and second oupu o mainain good regulaion. No more han 5 converers should be conneced in parallel. Series connecion of second oupus wihou involving heir main oupus should be avoided, as regulaion may be poor. The maximum oupu curren is limied by he oupu wih he lowes curren limiaion, if several oupus are conneced in series..2 T A min 5 6 7 8 9 T A [ C] Fig. Oupu curren deraing versus emperaure for -7 and -9 models. Thermal Proecion A emperaure sensor generaes an inernal inhibi signal, which disables he oupus if he case emperaure exceeds T C max. The oupus are auomaically re-enabled, when he emperaure drops below his limi. I is recommended ha coninuous operaion under simulaneous exreme wors-case condiions of he following hree parameers be avoided: Minimum inpu volage, maximum oupu power, and maximum emperaure. BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page 9 of 28
Wa AC-DC PFC Converers Oupu Volage Regulaion The following figures apply o single-oupu or double-oupu models wih parallel-conneced oupus. V o V o nom.98 5a V o2 [V] 3 2.5 2..5 583a I o = % I o = 5% I o = %.5.5. Fig. 2 Typ oupu characerisic V o versus I o. I o I ol I o I o nom.5.2.4.6.8 I o2 /I o2 nom Fig. 4 LS532: V o2 versus I o2 wih various I o (yp). V o I o /I o nom.5 V od Fig. 3 Typical dynamic load regulaion of V o. d V o ±% V o ±% V od µs µs d 52c V o2 [V] 6.5 6 5.5 5 4.5 4 3.5 584a I o = % I o = 5% I o = %.2.4.6.8 I o2 /I o2 nom Fig. 5 LS554: V o2 versus I o2 wih various I o (yp). Oupu Regulaion of Double-Oupu Models Oupu is under normal condiions regulaed o V o nom, independen of he oupu currens. V o2 depends upon he load disribuion. If boh oupus are loaded wih more han % of I o nom, he deviaion of V o2 remains wihin ±5% of he value of V o. The following 3 figures show he regulaion wih varying load disribuion. Two oupus of an LS5 model conneced in parallel will behave like he oupu of an LS4 model. Noe: If oupu 2 is no used, we recommend connecing i in parallel wih oupu. This ensures good regulaion and efficiency. V o2 [V] 27 26 25 24 23 22 2 585a I o = % I o = 5% I o = %.2.4.6.8 I o2 /I o2 nom Fig. 6 LS566: V o2 versus I o2 wih various I o (yp). BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page of 28
Wa AC-DC PFC Converers Auxiliary Funcions Inhibi for Remoe On and Off The oupus may be enabled or disabled by means of a logic signal (TTL, CMOS, ec.) applied beween he inhibi inpu i (pin 8) and pin 4 (S or Vo ). In sysems wih several converers, his feaure can be used o conrol he acivaion sequence of he converers. If he inhibi funcion is no required, connec he inhibi pin 8 o pin 4. Noe: If pin 8 is no conneced, he oupu is disabled. Inpu Fig. 7 Definiion of V inh and I inh. Table 5: Inhibi characerisics 63b Vo+ i 8 S /Vo 4 Characerisic Condiions min yp max Uni V inh Inhibi V o = on V i min V i max 5.8 V volage Vo = off 2.4 5 I inh Inhibi curren V inh = 4 µa r Rise ime 3 ms f Fall ime depending on I o I inh V inh V o /V o nom. r f Inhibi Fig. 9 Oupu response as a funcion of inhibi conrol Sense Lines (Single-Oupu Models) 6 Imporan: Sense lines mus always be conneced! Incorrecly conneced sense lines may acivae he overvolage proecion resuling in a permanen shor-circui of he oupu. This feaure allows for compensaion of volage drops across he connecor conacs and if necessary, across he load lines. We recommend connecing he sense lines direcly a he female connecor. To ensure correc operaion, boh sense lines (S+, S ) should be conneced o heir respecive power oupus (Vo+ and Vo ). The volage difference beween any sense line and is respecive power oupu (as measured on he connecor) should no exceed he following values: Table 6: Maximum volage compensaion allowed using sense lines Oupu Toal volage difference Volage difference volage beween sense lines and beween heir respecive oupus Vo and S 5. V <.5 V <.25 V 2 V, 5 V, 24 V <. V <.25 V I inh [ma] 2..6 V inh =.8 V V inh = 2.4 V 632a Noe: If he oupu volages are increased above V o nom via R-inpu conrol, opion P seing, remoe sensing, or opion T, he oupu currens mus be reduced accordingly, so ha P o nom is no exceeded..2.8.4 V o = on V o = off.4.8 4 2 2 4 V inh [V] Fig. 8 Typical inhibi curren I inh versus inhibi volage V inh BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page of 28
Wa AC-DC PFC Converers Programmable Oupu Volage (R-Funcion) As a sandard feaure, he converers offer an adjusable oupu volage, idenified by leer R in he ype designaion. The conrol inpu R (pin 6) acceps eiher a conrol volage V ex or a resisor R ex o adjus he desired oupu volage. When R is no conneced, he oupu volage is se o V o nom. a) Adjusmen by means of an exernal conrol volage V ex beween pin 6 (R) and pin 4: The conrol volage range is 2.75 V and allows an oupu volage adjusmen in he range of approximaely % V o nom. V o V ex 2.5 V V o nom b) Adjusmen by means of an exernal resisor: Depending upon he value of he required oupu volage he resisor shall be conneced eiher: Beween pin 6 and pin 4 (V o < V o nom ) o achieve an oupu volage adjusmen range of approx. % V o nom. or: Beween pin 6 and pin 2 (V o > V o nom ) o achieve an oupu volage adjusmen range of approx. % V o nom. Warning: V ex shall never exceed 2.75 V. The value of R' ex shall never be less han he lowes value as indicaed in able R' ex (for V > V nom ) o preven he converer from damage! Noes: The R-Funcion excludes opion P (oupu volage adjusmen by poeniomeer). If he oupu volages are increased above V o nom via R-inpu conrol, opion P seing, remoe sensing or opion T, he oupu curren(s) should be reduced accordingly so ha P o nom is no exceeded. Wih double-oupu models he second oupu follows he value of he conrolled main oupu. In case of parallel connecion he oupu volages should be individually se wihin a olerance of 2%. N~ L~ N~ L~ 63a 6 4 2 6 4 Vo+ R S Vo Vo+ S+ R S Vo + V ex R' ex R ex Fig. 2 Oupu volage conrol for single-oupu models LS 4 Table 7a: R ex for V o < V o nom ; approximae values (V i nom, I o nom, series E 96 resisors); R' ex = no fied V o nom = 5. V V o nom = 2 V V o nom = 5 V V o nom = 24 V V o [V] R ex [kω] V o [V] R ex [kω] V o [V] R ex [kω] V o [V] R ex [kω].5.432 2 4.86 2 4.69 4 8.8..976 3 6.33 4 8.47 6 2.33.5.65 4 8 2 6 2 2.67 8 6 2 2. 2.6 5 2.87 8 6 4.53 2 2.87 2.5 3.83 6 2 4.2 9 8 6.4 2 24 4.2 3. 5.76 7 4 5.62 2 8.6 4 28 5.62 3.5 8.66 8 6 8.6 22 6 32 8.6 4. 4.7 9 8 2. 2 24 6.2 8 36 2. 4.5 3. 2 2 3 26 26. 2 4 2 5. 2 22 42.2 4 28 56.2 22 44 44.2 Table 7b: R ex for V o > V o nom ; approximae values (V i nom, I o nom, series E 96 resisors); R ex = no fied V o nom = 5. V V o nom = 2 V V o nom = 5 V V o nom = 24 V V o [V] R' ex [kω] V o [V] R' ex [kω] V o [V] R' ex [kω] V o [V] R' ex [kω] 5.5 432 2. 24.2 82 5.2 3.4 5 24.25 48.5 332 5.2 25 2.2 24.4 93 5.4 3.8 768 24.5 49. 69 5.25 47 2.3 24.6 69 5.6 3.2 523 24.75 49.5 3 5.3 2.4 24.8 475 5.8 3.6 392 25. 5. 845 5.35 88.7 2.5 25. 383 6. 32. 36 25.25 5.5 698 5.4 75 2.6 25.2 36 6.2 32.4 267 25.5 5. 59 5.45 64.9 2.7 25.4 274 6.4 32.8 232 25.75 5.5 5 5.5 57.6 2.8 25.6 243 6.5 33. 22 26. 52. 442 3. 26. 96 26.25 52.5 42 3.2 26.4 69 26.4 52.8 383 Firs column: V o or V o ; second column: double-oupu models wih oupus in series connecion BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page 2 of 28
Wa AC-DC PFC Converers Vo2+ Vo2+ Vo2 Vo2 Vo+ Vo R 64a 4 + 6 8 2 4 6 R ex V o 24 V 3 V 48 V R' ex C o Tes Sockes Tes jacks (pin diameer 2 mm) for measuring he main oupu volage V o or V o are locaed a he fron of he converer. The posiive es jack is proeced by a series resisor (see Funcional Descripion, block diagrams). The volage measured a he es jacks is slighly lower han he value a he oupu erminals. Fig. 2 Double-oupu models: R-inpu for oupu volage conrol. Wiring for oupu volage 24 V, 3 V,or 48 V wih boh oupus conneced in series. A ceramic capacior (C o ) across he load reduces ripple and spikes. Display Saus of LEDs V o >.95 o.98 V o adj 62a OK i I o L V i LEDs "OK", "i " and "I o L " saus versus inpu volage Condiions: I o I o nom, T C T C max, V inh.8 V V i uv = undervolage lock-ou, V i ov = overvolage lockou V i uv V i min V i max V i ov V i abs OK I o L i V o >.95 o.98 V o adj I o V o <.95 o.98 V o adj I o nom I ol T C LEDs "OK" and "I o L " saus versus oupu curren Condiions: V i min V i max, T C T C max, V inh.8 V LED "i " versus case emperaure Condiions: V i min V i max, I o I o nom, V inh.8 V T C max T PTC hreshold V inh hreshold i -5 V LED off +.8 V +2.4 V LED Saus undefined V i inh +5 V LED on LED "i " versus V inh Condiions: V i min V i max, I o I o nom, T C T C max Fig. 22 LED indicaors BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page 3 of 28
Wa AC-DC PFC Converers Baery Charging/Temperaure Sensor The LS series converers are suiable for baery charger applicaions. For an opimum baery charging and life expecancy of he baery an exernal emperaure sensor can be conneced o he R-inpu. The sensor is mouned as close as possible o he baery pole and adjuss he oupu volage according o he baery emperaure. Depending upon cell volage and he emperaure coefficien of he baery, differen sensor ypes are available, see Accessories. Cell volage [V] 2.45 2.4 639b 2.35 2.3 Inpu Power supply Vo+ Vo R 399d Load 2.25 2.2 2.5 V o safe Fig. 23 Connecion of a emperaure sensor + ϑ Temperaure sensor + Baery 2. 2 2 3 4 5 C V C = 2.27 V, 3 mv/k V C = 2.23 V, 3 mv/k V C = 2.27 V, 3.5 mv/k V C = 2.23 V, 3.5 mv/k Fig. 24 Trickle charge volage versus emperaure for defined emperaure coefficien. BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page 4 of 28
Wa AC-DC PFC Converers Elecromagneic Compaibiliy (EMC) A meal oxide VDR ogeher wih an inpu fuse and an inpu filer form an effecive proecion agains high inpu ransien Immuniy volages, which ypically occur in mos insallaions. The S Series has been successfully esed o he following specificaions: Table : Elecromagneic immuniy (ype ess) Phenomenon Sandard Level Coupling Value Waveform Source Tes In Perf. mode applied imped. procedure oper. cri. 2 Elecrosaic IEC / EN 4 conac discharge 8 V p /5 ns 33 Ω posiive and yes A discharge 6-4-2 5 pf negaive air discharge 5 V p (o case) discharges Elecromagneic IEC / EN 3 anenna V/m AM 8% / khz n.a. 8 MHz yes A field 6-4-3 anenna 2 V/m AM 8% / khz n.a. 8 MHz yes A V/m 4 2 MHz 5 V/m 2 25 MHz 3 anenna V/m 5% duy cycle, n.a. 9 ±5 MHz yes A 2 Hz rep. rae pulse modul. Elecrical fas IEC / EN 3 capaciive, o/c ±2 V p burss of 5/5 ns 5 Ω 6 s posiive yes A ransiens/burs 6-4-4 2.5/5 khz over 6 s negaive ±i/c, +i/ i 5 ms; burs ransiens per direc period: 3 ms coupling mode Surges IEC / EN 3 ±i/c ±2 V p.2/5 µs 2 Ω 5 pos. and 5 neg. yes A 6-4-5 surges per +i/ i ± V p 2 Ω coupling mode Conduced IEC / EN 3 i, o, signal wires VAC AM 8% 5 Ω.5 8 MHz yes A disurbances 6-4-6 (4 dbmv) khz sine wafe Power frequency IEC / EN 3 -- A/m 6 s in all 3 axis yes A magneic field 6-4-8 Pulse IEC / EN - -- ±3 A/m 5 pulses per axis yes B magneic field 6-4-9 repei. rae s i = inpu, o = oupu, c = case 2 A = Normal operaion, no deviaion from specificaions, B = Temporary loss of funcion or deviaion from specs possible 3 For converers wih version V2 or higher. Older LKP models mee only B. 4 Only LKP models have been esed. Emissions dbµv LS46-7R, Peak N, Conduced.5-3 MHz, Divina, Jan. 26 8 7 6 EN 5522 B dbµv/m 5 4 TÜV-Divina, Jan.26 Tesdisance m, LS46-7R, U i =23 VAC, U o =24 V I o = 4.2 A EN 5522 B JM7 5 4 3 3 2 <25 dbµv/m 2.2.5 2 5 2 MHz Fig. 25 Conduced emissions (peak) a he neural inpu according o EN 55/22, measured a V i nom and I o nom (LS46-6R). The line inpu performs quie similar. Fig. 26 Typ. radiaed emissions accord. o EN 55/22, anenna m disance, measured a V i nom and I o nom (LS46-7R). BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page 5 of 28
Wa AC-DC PFC Converers Environmenal Condiions Table 9: Mechanical and climaic sress Tes Mehod Sandard Tes Condiions Saus Cab Damp hea IEC/EN 668-2-78:2 Temperaure: 4 ±2 C Converer no seady sae MIL-STD-8D sec. 57.2 Relaive humidiy: 93 +2/-3 % operaing Duraion: 56 days Ea Shock IEC/EN 668-2-27:987 Acceleraion ampliude: g n = 98 m/s 2 Converer (half-sinusoidal) MIL-STD-8D sec. 56.3 Bump duraion: 6 ms operaing Number of bumps: 8 (3 each direcion) Eb Bump IEC/EN 668-2-29:987 Acceleraion ampliude: 4 g n = 392 m/s 2 Converer (half-sinusoidal) MIL-STD-8D sec. 56.3 Bump duraion: 6 ms operaing Number of bumps: 6 ( each direcion) Fc Vibraion IEC/EN 668-2-6:995 Acceleraion ampliude:.35 mm ( 6 Hz) Converer (sinusoidal) MIL-STD-8D sec. 54.3 5 g n = 49 m/s 2 (6 2 Hz) operaing Frequency ( Oc/min): 2 Hz Tes duraion: 7.5 h (2.5 h each axis) Fh Random vibraion IEC/EN 668-2-64 Acceleraion specral densiy:.5 g 2 n /Hz Converer broad band Frequency band: 8 5 Hz operaing (digial conrol) Acceleraion magniude: 4.9 g n rms Tes duraion:.5 h (.5 h each axis) Kb Sal mis, cyclic IEC/EN 668-2-52:996 Concenraion: 5% (3 C) Converer no (sodium chloride Duraion: 2 h per cycle operaing NaCl soluion) Sorage: 4 C, 93% rel. humidiy Sorage duraion: 22 h per cycle Number of cycles: 3 Temperaures Table : Temperaure specificaions, values given are for an air pressure of 8 2 hpa (8 2 mbar) Temperaure Opion -7 Sandard -9 Uni Characerisics Condiions min max min max T A Ambien emperaure Converer 25 7 4 7 C T C Case emperaure operaing 25 95 4 95 T S Sorage emperaure No operaional 4 55 Overemperaure lockou a T C > 95 C Reliabiliy Table : MTBF calculaed according o MIL-Hdbk 27F Values a specified Model Ground benign Ground fixed Ground mobile Uni case emperaure 4 C 4 C 7 C 5 C MTBF LS 4/5 54 88 38 35 h BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page 6 of 28
Wa AC-DC PFC Converers Mechanical Daa Dimensions in mm. The converers are designed o be insered ino a 9" rack, 6 mm long, according o IEC 6297-3. European Projecion 7 TE 5 TE 3.27 5 (7. o 7.9) M4 7..3 2. 2.3 3.3 94f Measuring poin of case emperaure T C 5 5 (3U) 5.5 29.9 9.7 9.5 4.5 Tes jacks (+/ ) Opion P (V o ) Opion D (V o ) Opion D (V i ) LED i (red) LED OK (green) LED I ol (red) = Ø 3.5 = Ø 4. d 8 52 8 Fron plae Main face Back plae 68.5 6.8 25.9 5 x 9 2.8.2 Screw holes of he fronplae = Ø 4. = Ø 3.5 Fig. 27 Aluminum case S2 wih hea sink; black finish (EP powder coaed); weigh approx..25 kg Noes: d 5 mm, recommended minimum disance o nex par in order o ensure proper air circulaion a full oupu power. free air locaion: he converer should be mouned wih fins in a verical posiion o achieve maximum airflow hrough he hea sink. BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page 7 of 28
Wa AC-DC PFC Converers 38.5.8 5 5 5 58 93b 7 TE 4 TE 3.27 M 4 (3U) European Projecion 5 47.2 38.5.8 6.5.2 3 Measuring poin of case emperaure T C 7.3 33.4 68 (7.... 7.9) 47.2 5 Fig. 28 Opion B: Aluminium case S2 wih small cooling plae; black finish (EP powder coaed). Suiable for mouning wih access from he backside. Toal weigh approx..2 kg. 4 27 6.5 27 7.3 33.4 ±.2 3 68 Fig. 29 Opion B: Aluminum case S2 wih large cooling plae; black finish (EP powder coaed). Suiable for fron mouning. Toal weigh approx..3 kg Noe: Long case wih opion B2, elongaed by 6 mm for 22 mm rack deph, is available on reques (no LEDs, no es sockes). BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page 8 of 28
Wa AC-DC PFC Converers Safey and Insallaion Insrucions Connecor Pin Allocaion The connecor pin allocaion able defines he elecrical poenials and he physical pin posiions on he H5 connecor. The proecive earh is conneced rough a leading pin (no. 24), ensuring ha i makes conac wih he female connecor firs. Fig. 3 View of converer's male connecor, ype H5 Table 2: Pin allocaion Insallaion Insrucions 3 26 22 8 4 6 32 28 24 2 6 2 8 4 Fixures for reenion clips S2b Pin Connecor ype H5 no. LS4 LS5 4 6 8 Vo+ Posiive oupu Vo2+ Pos. oupu 2 Vo Negaive oupu Vo2 Neg. oupu 2 2 S+ Sense+ Vo+ Oupu 4 S Sense Vo Oupu 6 R Conrol of V o R Conrol of V o 8 i Inhibi i Inhibi 2 D 3 Save daa V 3 ACFAIL D 3 Save daa 22 T 4 Curren share T 4 Curren share 24 2 Proecive earh Proecive earh 26 28 3 32 N~ Neural line N~ Neural line L~ Phase line L~ Phase line No conneced, if opion P is fied 2 Leading pin (pre-connecing) 3 Opion D excludes opion V and vice versa. Pin is no conneced, if neiher opion D or V is fied. 4 No conneced, unless opion T is fied. Imporan: These producs have a power facor correcion (PFC) and are inended o replace he LS and LS2 series converers, in order o comply wih IEC/EN 6-3-2. Swich off he sysem and check for hazardous volages before alering any connecion! These converers are componens, inended exclusively for inclusion wihin oher equipmen by an indusrial assembly operaion or by professional insallers. The insallaion mus sricly follow he naional safey regulaions in compliance wih he enclosure, mouning, creepage, clearance, casualy, markings, and segregaion requiremens of he end-use applicaion. Connecion o he sysem shall be made via he female connecor H5 (see Accessories). Oher insallaion mehods may no mee he safey requiremens. Pin no. 24 ( ) is reliably conneced wih he case. For safey reasons, i is essenial o connec his pin reliably o proecive earh. See Safey of Operaor-Accessible Oupu Circuis. The phase inpu 3/32 (L~) is conneced via a buil-in fuse (see Inpu Fuse), which is designed o proec in he case of a converer failure. An addiional exernal fuse, suiable for he applicaion, migh be necessary in he wiring o he oher line inpu 26/28 (N~) if: Local requiremens demand an individual fuse in each source line Neural and earh impedance is high or undefined Phase and neural of he mains are no defined or canno be assigned o he corresponding erminals (L~ o phase and N~ o neural). Noes: If he inhibi funcion is no used, pin no. 8 (i) should be conneced o pin no. 4 (S /Vo ) o enable he oupu(s). Do no open he converers, or warrany will be invalidaed. Due o high curren values, he converers provide wo inernally parallel conacs for cerain pahs (pins 4/6, 8/, 26/ 28 and 3/32). I is recommended o connec load and supply o boh female connecor pins of each pah in order o keep he volage drop low and o no oversress he connecor conacs wih high currens. If he second oupu of double-oupu models is no used, connec i parallel wih he main oupu. Make sure ha here is sufficien airflow available for convecion cooling. This should be verified by measuring he case emperaure, when he converer is insalled and operaed in he end-use applicaion. See Thermal Consideraions. Ensure ha a converer failure (e.g., by an inernal shorcircui) does no resul in a hazardous condiion. See also Safey of Operaor-Accessible Oupu Circui. Sandards and Approvals The converers are safey-approved o EN/IEC 695-, and UL/CSA 695-2 nd Ed. (version 6 or greaer). The converers correspond o Class I equipmen and have been evaluaed for: Building-in Basic insulaion beween inpu and case based on 25 VAC, and double or reinforced insulaion beween inpu and oupu(s). Funcional insulaion beween oupus. Overvolage caegory II BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page 9 of 28
Wa AC-DC PFC Converers Table 3: Isolaion Characerisic Inpu o case Oupu(s) o Oupu o Uni and oupu(s) case oupu 2 Elecric Facory es > s 2.8.4.5 kvdc srengh AC es volage equivalen es o facory es 2... kvac Insulaion resisance a 5 VDC >3 >3 > 2 MΩ Creapage disances 3.2 3 -- -- mm According o IEC/EN 695, subassemblies connecing inpu o oupu are pre-esed wih 5.6 kvdc or 4 kvac. 2 Tesed a 5 VDC 3 Inpu o oupus: 6.4 mm Polluion degree 2 environmen Max. aliude: 2 m. The converers fulfill he requiremens of a fire enclosure. All boards of he converers are coaed wih a proecive lacquer. The converers are subjec o manufacuring surveillance in accordance wih he above menioned UL sandards and ISO 9:28. CB-scheme is available. Proecion Degree and Cleaning Liquids Condiion: Female connecor fied o he converer. IP 3: All models excep hose wih opion P, and excep hose wih opion D or V including a poeniomeer. IP 2: All models fied wih opion P, or wih opion D or V wih poeniomeer. In order o avoid possible damage, any peneraion of cleaning fluids is o be prevened. Isolaion and Leakage Currens The elecric srengh es is performed in he facory as rouine es in accordance wih EN 554 and IEC/EN 695. The company will no honor warrany claims resuling from incorrecly performed elecric srengh field ess. Leakage currens flow due o inernal leakage capaciances and Y-capaciors. The curren values are proporional o he supply volage and are specified in he able below. Table 5: Safey concep leading o an SELV oupu circui Table 4: Leakage currens Characerisic Class I Uni Maximum earh Permissible according o IEC/EN 695 3.5 ma leakage curren Typ. value a 254 V, 5 Hz (LS models).8 Railway Applicaions and Fire Proecion The converers have been designed by observing he railway sandards EN 555 and EN 52-4. All boards are coaed wih a proecive lacquer. The converers wih version V8 (or laer) comply wih NF-F6 (I2/F). They also accord o EN 45545-, EN 45545-2 (23), if insalled in a echnical comparmen or cabine. Safey of Operaor-Accessible Oupu Circui If he oupu circui of an converer is operaor-accessible, i shall be an SELV circui according o IEC/EN 695. The able below shows a possible insallaion configuraion, compliance wih which causes he oupu circui of an S Series AC-DC converer o be an SELV circui according o IEC/EN 695 up o a configured oupu volage of 36 V (sum of nominal oupu volages conneced in series). Fig. 3 Schemaic safey concep. AC-DC converer Condiions AC-DC converer Insallaion Resul Nominal volage Grade of insulaion Measures o achieve he resuling Safey saus of he AC-DC beween inpu and oupu safey saus of he oupu circui converer oupu circui provided by he AC-DC converer Mains Double or reinforced Earhed case and insallaion SELV circui 25 VAC according o he applicable sandards The earh connecion has o be provided by he insaller according o he relevan safey sandards, e.g. IEC/EN 695. Mains ~ ~ Earh connecion Fuse Fuse 2a + SELV BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page 2 of 28
Wa AC-DC PFC Converers Descripion of Opions Table 6: Survey of opions Opion Funcion of opion Characerisic -7, -7E Exended operaional ambien emperaure range T A = 25 o 7 C E Elecronic inrush curren limiaion circuiry Acive inrush curren limiaion, sandard feaure for T A = 4 C P 2 Poeniomeer for fine adjusmen of oupu volage Adjusmen range +/ 6% of V o nom, excludes R inpu D Inpu and/or oupu undervolage monioring circuiry Safe daa signal oupu (D DD) V Inpu and/or oupu undervolage monioring circuiry ACFAIL signal according o VME specificaions (V, V2, V3) T Curren sharing Inerconnec T-pins if paralleling oupus (max 5 converers) B, B, B2 Cooling plae (6 or 22 mm long) Replaces sandard hea sink, allowing direc chassis-mouning G RoHS-complian for all six subsances G is always he las characer in he ype designaion Opion D excludes opion V and vice versa; opion V only for 5. V oupus. 2 Opion P is no available for baery charger models. -7 Resriced Temperaure Range Opion -7 and -7E sand for a resriced operaional ambien emperaure range of 25 o 7 C raher han 4 o 7 C. E Inrush Curren Limiaion The converers exhibi an elecronic circui replacing he sandard buil-in NTC, in order o achieve an enhanced inrush curren limiing funcion (sandard feaure). Noe: Subsequen swich-on cycles a sar-up are limied o max. cycles during he firs 2 seconds (cold converer) and hen o max. cycle every 8 s. I i [A] 2 5 5 5 Capacior C i fully charged 2b Normal operaion (FET fully conducing) Table 7: Inrush curren characerisics wih opion E Characerisics LS Uni V i = 23 VAC yp max I inr p Peak inrush curren 25.3 A inr Inrush curren duraion 35 5 ms inr 2 3 4 5 6 7 8 ms Fig. 33 Inrush curren wih opion E V i = 23 VAC, f i = 5 Hz, P o = P o nom b P Poeniomeer Inpu Filer Recifier Conrol FET PFC - correc. + Converer A poeniomeer provides an oupu volage adjusmen range of +/ 6% of V o nom. I is accessible hrough a hole in he fron cover. Opion P is no available for baery charger models and is no recommended for converers conneced in parallel. Fig. 32 Opion E block diagram R s R I C b Opion P excludes he R-funcion. Wih double-oupu models, boh oupus are influenced by he poeniomeer seing (doubling he volage, if he oupus are in series). If he oupu volages are increased above V o nom via R inpu conrol, opion P seing, remoe sensing or opion T, he oupu curren(s) should be reduced accordingly, so ha P o nom is no exceeded. BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page 2 of 28
Wa AC-DC PFC Converers T Curren Sharing This opion ensures ha he oupu currens are approximaely shared beween all parallel-conneced converers, hence increasing sysem reliabiliy. To use his faciliy, simply inerconnec he T pins of all converers and make sure ha he reference for he T signal, pin 4 (S or he Vo ), are also conneced ogeher. The load lines should have equal lengh and cross secion o ensure equal volage drops. Vo+ Vo Vo+ Vo Vo+ 3a Load 37b Converer Converer Vo2+ Vo2 T Vo+ Vo Vo2+ Vo2 T Vo+ Vo Power bus + Load Vo Fig. 34 An example of poor wiring for connecion in parallel No more han 5 converers should be conneced in parallel. The R pins should be lef open-circui. If no, he oupu volages mus be individually adjused prior o paralleling wihin o 2% or he R pins should be conneced ogeher. Parallel connecion of converers wih opion P is no recommended. Max. 5 converers in parallel connecion Fig. 36 Paralleling of double-oupu models wih he oupus conneced in series, and using opion T wih power bus. Noe ha he signal a he T pins is referenced o Vo. 36b Vo+ 2 S+ Converer T S Vo Vo+ 2 Load S+ Converer T S Vo Max. 5 converers in parallel connecion Lead lines should have equal lengh and cross secion, and should run in he same cable loom. 2 Diodes recommended in redundan operaion only Fig. 35 Paralleling of single-oupu models using opion T wih he sense lines conneced a he load BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page 22 of 28
Wa AC-DC PFC Converers Table 8: Undervolage monioring funcions Oupu ype Monioring Minimum adjusmen range Typical hyseresis V ho [% of V ] JFET NPN V b 4 V o /V o of hreshold level V for V min V max V b 4 V o V ho D D5 no yes - 3.5 V BR 2.5.6 V D2 D6 yes no 355 VDC - - D3 D7 yes yes 355 VDC (.95.985 V o ) 2 "" D4 D8 no yes - (.95.985 V o ) 2 "" D D9 no yes - 3.5 V 3 BR 2.5.6 V yes yes 355 VDC 3.5 V 3 BR 2.5.6 V DD yes yes 355 VDC 3.5 V BR 2.5.6 V Threshold level adjusable by poeniomeer. See Oupu Daa for V BR. 2 Fixed value. Tracking if V o is adjused via R-inpu, opion P, or sense lines. 3 The hreshold level permanenly adjused according o cusomer specificaion ±2% a 25 C. Any value wihin he specified range is basically possible, bu causes a special ype designaion in addiion o he sandard opion designaions (D/D9). 4 V b is he volage generaed by he boos regulaor. When V b drops below 355 V, he D signal riggers, and he oupu(s) will remain powered during nearly he full hold-up ime h. D Undervolage Monior The inpu and/or oupu undervolage monioring circui operaes independenly of he buil-in inpu undervolage lockou circui. A logic "low" (self conducing JFET) or "high" signal (NPN oupu) is generaed a he D oupu (pin 2), when one of he moniored volages drops below he preseleced hreshold level V. This signal is referenced o S /Vo. The D oupu recovers, when he moniored volages exceed V + V h. The hreshold level V bi is adjused in he facory. The hreshold level V o is eiher adjused by a poeniomeer accessible hrough a hole in he fron cover, or adjused in he facory o a fixed value specified by he cusomer. Opion D exiss in various versions D DD, as shown in he able below. JFET oupu (D D4): Pin D is inernally conneced via he drain-source pah of a JFET (self-conducing ype) o he negaive poenial of oupu. V D.4 V (logic low) corresponds o a moniored volage level (V i and/or V o ) <V. The curren I D hrough he JFET should no exceed 2.5 ma. The JFET is proeced by a.5 W Zener diode of 8.2 V agains exernal overvolages. Inpu Self-conducing juncion FET 6a 2 D Fig. 37 Opion D D4: JFET oupu, I D 2.5 ma Vo+/Vo+ I D V D 4 S /Vo R p Table 9: JFET oupu (D D4) V b, V o saus V b or V o < V V b and V o > V + V h NPN oupu (D5 DD): Pin D is inernally conneced via he collecor-emier pah of a NPN ransisor o he negaive poenial of oupu. V D <.4 V (logic low) corresponds o a moniored volage level (V i and/or V o ) > V + V h. The curren I D hrough he open collecor should no exceed 2 ma. The NPN oupu is no proeced agains exernal overvolages. V D should no exceed 4 V. Inpu NPN open collecor D oupu, V D low, L, V D.4 V a I D = 2.5 ma high, H, I D 25 µa a V D = 5.25 V 7a 2 D Vo+/Vo+ I D V D 4 S /Vo Fig. 38 Opion D5 DD: NPN oupu, V o 4 V, I D 2 ma Table 2: JFET oupu (D5 DD) V b, V o saus V b or V o < V V b and V o > V + V h D oupu, V D R p high, H, I D 25 µa a V D = 4 V low, L, V D.4 V a I D = 2 ma BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page 23 of 28
Wa AC-DC PFC Converers Table 2: D-oupu logic signals Version of D V b < V resp. V o < V V b > V + V h resp. V o > V Configuraion D, D2, D3, D4, D low high JFET D5, D6, D7, D8, D9, DD high low NPN Inpu volage monioring NPN V D V D high 44b V D low I D I D high 3 3 3 3 I D low JFET V D V D high V D low h low min 4 low min 4 low min 4 high min V o V o nom.95 h V b [VDC] 358 355 Inpu volage failure Swich-on cycle Inpu volage sag Swich-on cycle and subsequen Oupu volage monioring inpu volage failure NPN V D V D high 2 V D low I D I D high I D low JFET V D V D high Hold-up ime see: Elecrical Inpu Daa. 2 Wih oupu volage monioring, hold-up ime h =. 3 The signal remains high, if he D oupu is conneced o an exernal source. 4 low min = 7 ms, ypically 3 ms. V D low V o V o nom V o +V ho low min 4 V o Oupu volage failure Fig. 39 Relaionship beween V b, V o, V D, V o /V o nom versus ime BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page 24 of 28
Wa AC-DC PFC Converers V ACFAIL Signal (VME) Available only for models wih V o = 5. V. This opion defines an undervolage monioring circui for he inpu and main oupu volage. I generaes he ACFAIL signal (V signal) according o he VME sandard. The low sae level of he ACFAIL signal is specified a a sink curren of I V 48 ma o V V.6 V (open-collecor oupu of an NPN ransisor). The pull-up resisor feeding he opencollecor oupu should be placed on he VME backplane. Inpu volage monioring V2 V V V V high 3 2 2 low min 2 low min low min 3 3 4 4 45a V V low V3 V V V V high 3 2 low min 3 3 low min 2 V V low V o 5. V 4.875 V h h 2. V V b [VDC] 358 355 Inpu volage failure Swich-on cycle Inpu volage sag Swich-on cycle and subsequen inpu volage failure Oupu volage monioring V2 V V V V high V V low 4 4 V3 V V V V high V V low V o 5. V 4.875 V 4 3 3 low min 2 VME reques: minimum 4 ms 2 low min = 4 2 ms, yp 8 ms 3 V V level no defined a V o < 2. V 4 The V signal drops simulaneously wih he oupu volage, if he pull-up resisor R P is conneced o Vo+; he V signal remains high if R P is conneced o an exernal source. 2. V V i V i + V hi V i Oupu volage failure Fig. 4 V cb, V o, V V, I V, V o /V o nom versus ime. BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page 25 of 28
Wa AC-DC PFC Converers Afer he ACFAIL signal has gone low, he VME sandard requires a hold-up ime h of a leas 4 ms before he 5. V oupu drops a full load o 4.875 V. This hold-up ime h is provided by he capaciance supporing he boos volage V b. See Hold-up Time. Table 22: Undervolage monior funcions V oupu Monioring Minimum adjusmen (VME compaible) V b V o range of hreshold level V b V o V2 yes no 355 VDC V3 yes yes 355 VDC.95.985 V o 2 Opion V moniors V b generaed by he boos regulaor. The rigger level is adjused in he facory o 355 VDC. 2 Fixed value beween 95% and 98.5% of V o Opion V operaes independenly of he buil-in inpu undervolage lockou circui. A logic "low" signal is generaed a pin 2, as soon as one of he moniored volages drops below he preseleced hreshold level V. The reurn for his signal is S or Vo. The V oupu recovers, when he moniored volage(s) exceed(s) V + V h. The hreshold level V o is adjused in he facory o a cusomer-specified value. V-oupu (V2, V3): Connecor pin V is inernally conneced wih he open collecor of an NPN ransisor. The emier is conneced wih S or Vo. V V.6 V (logic low) corresponds o a moniored volage level (V i and/or V o ) <V. The curren I V hrough he open collecor should no exceed 5 ma. The NPN oupu is no proeced agains exernal overvolages. V V should no exceed 6 V. B, B, B2 Cooling Plae Where a cooling surface is available, we recommend he use of a cooling plae insead of he sandard hea sink. The mouning sysem should ensure sufficien cooling capaciy o guaranee ha he maximum case emperaure T C max is no exceeded. The cooling capaciy is calculaed by: (% η) P Loss = V o I o η Efficiency η see Model Selecion For he dimensions of he cooling plaes, see Mechnical Daa. Opion B2 is for cusomer-specific models wih elongaed case (for 22 mm DIN-rack deph). G RoHS Models wih G as las characer of he ype designaion are RoHS-complian for all six subsances. Table 23: Saus of V oupu V b, V o saus V b or V o < V V b and V o > V + V h V oupu, V V low, L, V V.6 V a I V = 5 ma high, H, I V 25 µa a V V = 5. V 9a Vo+ I V R p Inpu NPN open collecor 2 V V V 4 S Fig. 4 Oupu configuraion of opions V2 and V3 BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page 26 of 28
Wa AC-DC PFC Converers Accessories A variey of elecrical and mechanical accessories are available including: Fron panels for 9" DIN-rack: Schroff or Inermas, 2 TE /3U; see fig. 42. Maing H5 connecors wih screw, solder, fason, or press-fi erminals, code key sysem and coding wedges HZZ22-G; see fig. 43. Pair of connecor reenion clips HZZ29-G; see fig. 44 Connecor reenion brackes HZZ26-G; see fig. 45. Cage clamp adaper HZZ44-G; see fig. 46 Differen cable hoods for H5 connecors (fig. 47): - HZZ4-G, screw version - HZZ42-G, use wih reenion brackes HZZ28-G - HZZ43-G, meallic version providing fire proecion 2 o 3 Ncm Fig. 45 Connecor reenion brackes HZZ26-G (CRB-HKMS) Fig. 42 Differen fron panels Fig. 46 Cage clamp adaper HZZ44-G Fig. 43 Differen maing connecors Fig. 44 Connecor reenion clips o fasen he H5 connecor o he rear plae; see fig. 24. HZZ29-G consiss of 2 clips. Fig. 47 Differen cable hoods BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page 27 of 28
Wa AC-DC PFC Converers Chassis or wall-mouning plae K2 (HZZ23-G) for models wih opion B. Maing connecor (HZZ7-G) wih screw erminals; see fig. 48 DIN-rail mouning assembly HZZ65-G (DMB-K/S); see fig. 49 Addiional exernal inpu and oupu filers Differen baery sensors S-KSMH... for using he converer as a baery charger. Differen cell characerisics can be seleced; see fig. 32, able 2, and Baery Charging/ Temperaure Sensors. For addiional accessory produc informaion, see he accessory daa shees lised wih each produc series or individual model a our web sie: www.belpowersoluions.com L L = 2 m (sandard lengh) oher cable lenghs on reques Fig. 5 Baery emperaure sensor 56 (2.2") 925a 26 (.2") adhesive ape European Projecion 9.8 (.4") Table 24: Baery emperaure sensors Fig. 48 Chassis- or wall-mouning plae HZZ23-G (Mouning plae K2) Baery Sensor Cell Cell emp. Cable volage ype volage coefficien lengh nom. [V] [V] [mv/k] [m] 2 S-KSMH2-2.27-3-2 2.27 3. 2 2 S-KSMH2-2.27-35-2 2.27 3.5 2 24 S-KSMH24-2.27-3-2 2.27 3. 2 24 S-KSMH24-2.27-35-2 2.27 3.5 2 24 S-KSMH24-2.3-35- 2.3 3.5 4.5 24 S-KSMH24-2.3-35-2 2.3 3.5 2 24 S-KSMH24-2.35-35-2 2.35 3.5 2 48 S-KSMH48-2.27-3-2 2.27 3. 2 48 S-KSMH48-2-27-35-2 2.27 3.5 2 Noe: Oher emperaure coefficiens and cable lenghs are available on reques. Fig. 49 DIN-rail mouning assembly HZZ65-G (DMB-K/S) NUCLEAR AND MEDICAL APPLICATIONS - These producs are no designed or inended for use as criical componens in life suppor sysems, equipmen used in hazardous environmens, or nuclear conrol sysems. TECHNICAL REVISIONS - The appearance of producs, including safey agency cerificaions picured on labels, may change depending on he dae manufacured. Specificaions are subjec o change wihou noice. Copyrigh 26, Bel Power Soluions Inc. All righs reserved. www.belpowersoluions.com BCD23-G Rev AD, 2-Sep-26 The Power Parners. Page 28 of 28