N2POWER XL275 DC- -DC SERIES ULTRA SMALL, HIGH-E EF FF FIIC CIIE EN NC CY POWER SUPPLIES HIGHLIGHTS  275W DC-DC  3” X 5” Small Footprint  Up to 91% Efficiency  High Power Density: 12 W / cu in.  All Outputs may be Paralleled  Remote On / Off  5W 5V Standby Supply  36 - 76 VDC Input  Active Current Sharing  Built in OR-ing MOSFET for N, N+1 TM  PMBus Interface for Digital Power Typical Mechanical Drawing: Management (optional) Inch Inches ( es (mill millimete imeter rs), s), co conn nnectors an ectors and d pino pinouts m uts may var ay vary w y with ith m mod odel. el.  RoHS Compliant Refer to XL275 Produ Product Sp ct Specific ecification for ation for com complet plete inf e informat ormation ion.  Input to Output Isolation POWER SUPPLY DESIGN LEADER N2Power N2Power co contin ntinue ues s tto o le lead ad the the po pow wer er densi density ty race race wi with th its small, high efficiency XL275 DC-DC DC po power wer supp suppli lies. es. Our Our stat state e of of tthe he art art tec techn hnolo ology gy yields yields a a very very s small mall foo foottprint, print, re redu duc ces es wast wasted ed po power, wer, and and o offe ffers rs tthe he hig high hest est power density in its class. . This This un uniq ique ue de desig sign n me mea ans ns reduced reduced ener energy gy costs, costs, a a greater greater return return o on n yo your ur investment investment, h , hig ighe her r r reliability eliability an and d lon longe ger pro r produ duct lif ct life. e. ADVANCED DIGITAL CONTROLLER The The X XL275 L275 is is the the firs first t p powe ower r supp supply ly iin n tthis his class class tto o use use a a de dedica dicated ted digit digital al mi microcont crocontroll roller er to to s sup upervis ervise e th the e u uni nit’s t’s operation. The microcontroller monitors the following parameters: TM PMBus OPTION  DC input voltage An An o optional ptional PMBusTM PMBusTM di digit gital al comm commun unicatio ications ns int interface erface is is  Output voltage also also provid provided ed to to allow allow u up p tto o fo four ur XL XL27 275 5 to to comm commun unic icate ate  Output current over over the the same same bu bus s usin using g the the PMB PMBus us protocol. This  Transformer temperature interface interface allows allows ro routin utine e r remote emote c con ontrol trol of of th the e m main ain  Ambient temperature ou outp tputs uts and and the the 1 12V 2V fa fans. ns. IIt t can can also also no notify tify tthe he ho hos st t if if a a  Fan tachometer fan fan fails fails (l (lost ost tac tacho homet meter er pu pulses) lses). . The The ho host st ca can n a also lso qu query ery th the e mi microcontroller crocontroller for for its its ou outpu tput t volt voltag age e and and The The mi microcontroller crocontroller enables enables the the main main outpu output t when whenever ever all all of of the the req required uired start startup up con conditions ditions are are met, met, a and nd sh shuts uts it curr curren ent t pl plus us th the e ambi ambien ent t a and nd tra transformer temperatures. do down wn up upo on n comm command, and, loss loss of of inp input ut po power wer or or wh whenev enever er Beca Becaus use e it it is is pro programm grammab able le, , the the mi microco crocontroller ntroller cod code e c can an excessive lo excessive load ads s or temp or temperat eratures are ures are s sen ense sed. d. be be cus customized tomized to to me meet et u uniq nique ue OEM re OEM requ quir ireme ements. nts. C Con ontact tact us us r reg ega ar rding ding custo custom and m and m mo odified dified stan standa dard supp rd suppli lies fo es for r u uniqu nique ap e applications plications. QUALSTAR CORPORATION www.n2power.com Tel: 805-583-7744 NASDAQ: QBAK Rev: 07-20-17 N2POWER XL275 DC- -DC SERIES ULTRA SMALL, HIGH-E EF FF FIIC CIIE EN NC CY POWER SUPPLIES PART RE REGU GULATIO LATION N MAXIMUM RIPPLE & INPU INPUT S T SPECI PECIFI FICA CATIO TIONS NS MODEL OUTPUT VOLTAGE NUMBER (%) CURRENT (A) NOISE (P-P) Nomi Nomin nal Inp al Input V ut Voltage: oltage: 36 – 76 VDC V1 12 ±3 22.9 100 mV Input Current: 9.2 A @ 36 VDC XL275-12DC 400084-03-4 V2 12 ±5 1.0 80 mV Inp Input Protect ut Protectio ion: n: 10 A fuse XL275-12DC CS 400085-03-1 3000 V input to output V3 5sb ±5 1.0 50 mV Safety Isolation: 1500 V input to ground V1 24 ±3 11.5 200 mV XL275-24DC 400084-05-9 OU OUTPUT TPUT SPECI SPECIFIC FICAT ATIO IONS NS V2 12 ±5 1.0 80 mV XL275-24DC CS 400085-05-6 Total Power: 275W V3 5sb ±5 1.0 50 mV † Efficiency: Up to 91% V1 48 ±3 5.7 200 mV † Minimum Load: No load XL275-48DC 400084-06-7 V2 12 ±5 1.0 80 mV XL275-48DC CS 400085-06-4 Over Over / / Under S Under Sh hoo oot: t: Maximum 10% at turn-on V3 5sb ±5 1.0 50 mV PROTECTION V1 54 ±3 5.1 200 mV Overv Overvolta oltage ge Protect Protectio ion: n: V1 and V2 latch off XL275-54DC 400084-09-1 V2 12 ±5 1.0 80 mV XL275-54DC CS 400085-09-8 Overp Overpower ower Prot Protecti ection on:: Protected / Auto-recovery V3 5sb ±5 1.0 50 mV Auto recovery of all outputs Short Short Cir Circ cuit Pr uit Protecti otectio on: n: V1 56 ±3 4.9 200 mV protected against short circuit XL275-56DC 400084-10-9 Auto recovery protection V2 12 ±5 1.0 80 mV XL275-56DC CS 400085-10-6 Therm Thermal Sh al Shutd utdo own wn:: against over-temperature V3 5sb ±5 1.0 50 mV conditions OPERATING S SPECI PECIFI FICA CATIO TIONS NS CS = Current Sharing Operati Operatin ng T g Tem emp peratur erature: e: -25°C to +50°C Temp Temperat erature D ure Derati erating ng:: 2.5% / degree C 50°C to 70°C Stora Storag ge T e Tem empe per rature: ature: -40°C to +85°C Fo Forc rce ed Air d Air C Coo ooli ling ng:: 10 CFM minimum Conv Convecti ection on Coolin Cooling: g: 150W MTBF: > 200,000 hours (calculated) SIGNALS 1 Compliance: Remote Sense: V1 and Return USA / Canada Europe International Active Cu Curr rre ent S nt Sha hari rin ng: g: V1 using OR-ing MOSFET Safety: Underwriters Laboratories: 2006/95/EC - “L “Low ow Vo Volt lta ag ge (Saf e (Safety) ety) IEC 60950-1:2005 (2nd Edition) V2 and V3 outputs may be UL 60950-1:2007 (2nd Directive” Pa Pas ss siv ive Red e Redunda undancy ncy:: Safety of Information Technology wire OR-ed Edition) / C22.2 No. Demko: EN 60950-1:2 1:2006 ( 006 (2 2nd nd Equipment Fan Output 1: V2 on a 2-pin keyed connector 60950-1-07 Safety of nd Edition) + A11:2009 (2 Ed Edit itio ion) n) ON above 45°C ambient or Information Technology Fan Output 2: hot transformer Equipment (ITE) (Optional) Reports fan speed EMC: FCC part 15, subpart B 2004/ 2004/108/E 108/EC “Elec C “Electr tro oma mag gne neti tic c IEC 61204-3 Class B Fan T Fan Tach achom ometer I eter In npu putt: via PMBus Comp Compatibilit atibility y ( (EMC EMC) ) Dir Directi ectiv ve” e” Provides PMBus control / EN 61204-3 Class B Op Opti tio ona nal l PC PC Da Datta a/Clock: status interface High-true CMS logic and LED Power Good O Outp utput ut: 1 See Product Specification for additional information drive outputs LED drive on when V1 and V2 Sta Standby ndby Ou Outtpu put: t: outputs disabled Low-true input enables V1 and Remot Remote E e Enable In nable Inp put ut: † V2 outputs Onboard LED DC On, Power Good Indicators: † Se See Pr e Product oduct Sp Specif ecific ication ation For complete s complete s complete speci peci pecif f fications ications ications on all on all on all models, pl models, pl models, please vis ease vis ease visit o it o it our w ur w ur websi ebsi ebsite a te a te at: w t: w t: ww w ww w w.n2power.com .n2power.com .n2power.com Al All l info informa rmation tion a and nd sp spe eci cifications fications a ar re e b ba as se ed d o on n our our Qu Qua als lstta ar r an and d the the Q Qu ua als lstta ar r logo logo a ar re e re reg gis iste ter re ed d ttradema rademarks rks knowledg knowledge e o of f the the p pro rod du uc cts ts a at t tthe he time time of of p pri rin nti tin ng. g. o of f Qualstar Qualstar Co Cor rp po or ra atio tion n. . N N2 2P Po ow we er r a and nd tth he e N N2P 2Po ow we er r logo logo N2 N2P Po ow we er r r re eserv serve es s tth he e ri right ght to to ch cha ange nge sp spe ec cifi ificat cation ions s a are re trade tradem ma arks rks of of Q Qu ua als lstta ar r C Co orp rpo or ra atio tion n.. Al All l o other ther without notice. trademarks are the property of their respective owners. QUALSTAR CORPORATION www.n2power.com Tel: 805-583-7744 NASDAQ: QBAK Rev: 07-20-17