Ferrites and Accessories for xdsl Applications

Transcription

1 Ferrites and ccessories for xdsl pplications Product Profile 2

2 ontents Introduction 3 Optimized ferrite cores for xdsl applications 4 learance and creepage distances 7 Dimensions: cores and coil formers 8 Technical data and ordering codes 0 Further POS products for xdsl applications 2 ddresses 4 ustomer premises entral office P DSL modem Splitter Twisted pair Splitter DSL line NT Highspeed data ISDN NT xchange Voice network POTS Figure Fig. 2 POS G

3 Introduction New applications such as video-ondemand, teleworking, telelearning generate the demand for additional bandwidth. Internet access with xdsl (Digital Subscriber Line) is the fastest growing broadband technology. xdsl uses the ordinary telephone line with twisted copper pairs in a frequency range of 0 Hz to 30 MHz. t present the most popular variant is DSL. The typical configuration at the customer premises combines a modem and a POTS splitter to divide voice and data signals. The layout in the central office is displayed below (Figure ). Ferrite transformers are used in different functions, such as high-pass and low-pass filters, impedance matching and insulation transformers. The cost of upgrading a telephone network to broadband is directly related to the distance from the central office to the provider or the transmitted data rate. Ferrite material is an essential component for increasing the transmission rate and the range of the service. POS recently developed new ferrite materials with optimized characteristics for xdsl applications: T57 for SHDSL Major xdsl variants Variant Max. bit rate, downstream Max. bit rate, upstream Max. loop reach DSL 8 Mbit/s 768 kbit/s 6km and T66 for DSL. New core shapes with optimized geometry and downscaled dimensions were also introduced in the POS product range: PX 7/9, PX 0, PO 3 and P 5. This application note looks in detail at the excellent characteristics of innovative POS ferrite products to meet requirements for THD, insertion loss and loop length. SHDSL 2.3 Mbit/s 2.3 Mbit/s 4km VDSL 52 Mbit/s 2.3 Mbit/s.5 km Features Frequency Ferrite mat. ore shape Specification Market xdsl Symmetric SHDSL Low T57 P, PX, PO THD usiness symmetric DSL Medium T38 / T66 P, PX, PO Loop reach Residential Figure 2 POS G 3

4 Optimized Ferrite ores for xdsl pplications For xdsl line transformers the P 3 ferrite core in T38 is state-of-the-art. POS has created new products for xdsl line transformers, such as PX cores in the specially developed T66 ferrite material. These new products increase loop reach at a given data rate for xdsl applications. The major goal of all developments is miniaturization of the line transformer without any performance degradation. The lines per board can be increased, which enables further cost reduction. New core shapes Total harmonic distortion (THD) is currently the target parameter for xdsl transformers. The impact of core geometry on THD can be described by the core distortion factor (DF) ). y optimizing the geometry of the new PX cores 2), the DF, and thus THD, was significantly reduced compared to P cores with the same footprint (Figure 3). Figure 4, page 5, shows the effect of geometry on loop reach as measured in an TI0 DSL evaluation board. y using an PX 7/9 core instead of an P 7, loop reach can be substantially improved. ) POS Data ook, page 28 2) Utility model No.: D U , patent pending Figure 3: DF versus footprint for the P core family 0 P 5 DF [mm -4.5 ] PX 7/9 P 7 P 0 PX 0 P Footprint [mm 2 ] PO 3 4 POS G

5 PX 0 has the same outer dimensions as P 0. PX 7/9 combines the height of P 3 with the small footprint of P 7. PX cores are suited for use in a central office (.O.) because the number of lines per board can be increased. For customer premises (.P..), lower transformer height is often required. PO 3, a low-profile version of P 3, was optimized for this application. ll coils used with P 3 can also be used with PO 3 without any loss in performance. Tight tolerances of the inductance factor L are required for xdsl line transformers. The L tolerances of PO 3 and PX 0 are the same as those of P 3 and P 0. ut PX 7/9 offers tighter L tolerances than P 7. The core geometry features of PX 7/9 permit the same L tolerance as P 3. Figure 4: Loop reach measurement at 25 DSL (down stream), material: T38 Figure 5: Loop reach measurement at 25 DSL (down stream), core shape: P P 3 PX 7/9 P T66 T38 Data rate [kbit/s] Data rate [kbit/s] Reach [km] Reach [km] POS G 5

6 Different ferrite materials for different xdsl applications In contrast to DSL, SHDSL is a rate adaptive technology. To increase loop reach, bit rate is lowered by decreasing bandwidth. lso, the voice channels are inserted in the data stream so that the band starts at 0 Hz. So the requirement for the transformer means a lower, narrower band compared to DSL, and can be well correlated to the THD response. Low hysteresis losses over frequency and temperature make T57 the ideal material for SHDSL. The DSL band lies above the separate voice channel in a frequency band higher than SHDSL (28 khz to. MHz). Measuring THD at a single frequency cannot adequately describe transformer behavior. Direct measurement of the reach is necessary. T66 ferrite material was consequently developed for DSL requirements. T66 is specially optimized for longer reach and higher data rate. Measured results (Figure 5, page 5) show the clear advantage of T66 compared to T38. Summary The new PX and PO core shapes enable further miniaturization. Measurement of data rate as a function of loop reach shows the pronounced advantage of PX cores versus the standard P. For DSL applications the reach or data rate can also be improved by the new T66 ferrite material. The PX 7/9 core in T66 achieves virtually the same performance as P 3 in T38. oth the new PX core shape and the new T66 material mean a large step in the miniaturization process of xdsl line transformers. Figure 6: L tolerances for the P core family (500 < µ i < 5000) 20 P 7 P 0 P PO 3 3 PX 0 PX 7/9 P 7 P 20 Tolerance [] For PX and PO cores L tolerances are preliminary L : Inductance factor: L = L/N 2 L [nh] 6 POS G

7 learance and reepage Distances In the design of transformers, especially for the telecom sector, compliance with different local established standards (N 60950, I 950, UL 950/S 950, S/NZS 3260) is becoming increasingly important. Particularly the requirements of clearance and creepage distances affect the design of coil formers. Our design (PX 7/9, PX 0, P 3, PO 3) fulfills the following requirements according to N 60950: Supplementary insulation Working voltage Vac Pollution degree 2 reepage distance of 2.5 mm (TI III) learance distance of 2.0 mm Test voltage 500 Vac Our design adheres to the requirement between the primary (e.g. pin -side) and secondary winding (other side). Supplementary insulation: Independent insulation applied in addition to basic insulation in case of a fault in the basic insulation. learance distance: learance is the shortest distance between two conductive parts measured through air. reepage distance: reepage is the shortest path between two conductive parts measured along the surface of the insulation. Pollution degree 2: Occasionally, temporary conductivity caused by condensation must be expected (example: product used in typical office environment). xtended outer wire slots (patent pending) In addition to the clearance and creepage requirements between pin-core-pin, the transformer designer must be concerned with the distances between the primary and secondary winding. In this situation we can offer extended outer wire slots, where the wrapped wires dive into the side flange of the coil former and do not disturb higher layers of winding or insulation layers. It will also help to meet the requirements of creepage distances; otherwise a triple-insulated wire is used. Figure 7: learance and creepage distances Figure 8: xtended outer wire slots (patent pending) ore 2 learance distance reepage distance oil former Winding 2 xtended outer wire slots xample: PX 7/9 xample: PX 0 POS G 7

8 Dimensions: ores and oil Formers Type P5 P7 PX7/9 ore 2,8 4,4 4,5 3,9 0,25 4,3+0,25 ø,8 0,5 FP004-6,5 0,3,7±0, 7,2+0,4 3,4 0,2 FP ,4 2,3 7,2+0,4 3,4 0,2 FP0043- ore set 5,7 0,2 3,8+0,4 6,5 0,3 s ) FP004-7,5 0,2 5+0,4 9,4 0,4 FP0042- *) gapped (one-sided) *) gapped (one-sided) *) gapped (one-sided) s ) 7,5 0,2 4,6+0,4 9,4 0,4 s ) FP0043- oil former Front view 4, 0, 2,6±0,05 ) 7 0, 4,5 7, 0,5 4,55 0,5 3,45+0,5,9 3,6 5,95±0, FP004- FP0042- FP0043- oil former ottom view 5,2 0,2 ) 8,2 0,2 9,4 0,2 4,9 max. 0,6 FP004-D 9,9 max. 0,6 FP0042-D 7,5 max. 0,6 FP0043-D oil former Side view 3,7 0, 2,9+0, ) 4,9 max. 3,8 4,5 0, 0,6 8,0 max. 4,6 max. FP004-2,4 max. 0,85 9,7±0,2 3,8±0,2 FP0042-0,9±0,25 6,±0,2 7,5 0,2 2,4±0,2 FP0043- Recommended P layout,,5 8,6,85,85 FP004-F ), ,54 5,08 FP0042-F,2 2,5 3,6 2,54 3 x 2,54 = 7,62 FP0043-F 8 POS G

9 P 0 PX 0 P 3 PO 3 4,4 5,0 5,5 5,9 7,85 0,4,85±0, 3,45 0,3 9,2+0,4 FP0044-7,85 0,4,4 3,45 0,3 9,+0,4 FP ,4 2,4±0, 9,7+0,6 4,5 0,3 FP0046-0,4 7,4 2,4±0, 9,7+0,6 4,5 0,3 FP0047-0,4 0,2 7,2+0,4,8 0,6 s ) 0,2 0,4 7,2+0,4,8 0,6 s ) FP0044- FP0045- FP0046- *) gapped (one-sided) *) gapped (one-sided) *) gapped (one-sided) *) gapped (one-sided) 3 0,3 9+0,4 2,8 0,6 s ) 3 0,3 9+0,4 2,8 0,6 s ) FP , 3,6+0,,5 4,8±0,3 9, 0,5 4,7 3,5 min. 5, ),25+0, 2,5+0, 9,5 0,5 5,8 0,5 4,6+0,5,25+0, 2,5+0, 9,5 0,5 5,8 0,5 4,6+0,5 FP0044- FP0045- FP0046- FP0046-3,6 0,2 3,2 0,2 ) Top view 2,8 0,2 Top view 2,8 0,2 2,3 max. 2 max. 6,4 max. 6,4 max. FP0044-D 0,6 FP0045-D 0,7 FP0046-D 0,7 FP0046-D 0,6 7 0, 0,6 7 0, 0,6 0,6 ) 0,5±0, 8,9 0, 0,5±0, 0,5±0, 8,9 0, 0,5±0, 0,45* 0,45 0, ø4,8 * not applicable for section version FP max. 0,25 2,2 5,5 max. 6,3 FP0045-0,5±0,5 0,35 6,2±0,2 9,6±0,2 FP0046-0,5±0,5 0,35 6,2±0,2 9,6±0,2 FP0046- Hole arrangement (mounting direction) Ground ø,3+0,2 2,54 ø+0,2 FP0044-F,2 3 3,2 2,54 3 x 2,54 = 7,62 FP0045-F ),2 3 7,2 2,54 4 x 2,54 = 0,6 FP0046-F,2 3 7,2 2,54 4 x 2,54 = 0,6 FP0046-F ll dimensions are given in mm ) Preliminary data POS G 9

10 Technical Data and Ordering odes ores Material L values (nh); L tolerance code ore type ir gap T38 T57 T66 ) Ordering code (per set) P 5 P 7 PX 7/9 ) P 0 PX 0 ) P 3 PO 3 ) , , , 00 60, , , , 00 60, , 00 60, D Y Y Y Y Y Y Y 63, ) 63, 00 60, , ) 63, , 00 60, 35 0 ) 63, 00 60, , , 00 60, 35 63, , , 00 60, 35 63, 00 60, 35 = gapped / = ungapped ) Preliminary data R R R R R R D Y ** ** ** ** R Y ** ** ** ** ** R Y ** ** ** ** R Y ** ** ** ** R Y ** ** ** ** ** R Y P...-** P...-** P-** P35-** P-** P-R P-Y38 Magnetic characteristics (per set) ore I/ I e e min V e type mm - mm mm 2 mm 2 mm 3 P P PX 7/ P PX P PO e : ffective magnetic cross section min : Minimum core cross section I e : ffective magnetic path length V e : ffective magnetic volume I/: Magnetic form factor Ordering code example Type Version ode number for material L value in nh for cores with air gap. Obsolete for cores without air gap. ode letter for L tolerance =^ ±3 =^ ±4 =^ ±6 D =^ ±8 =^ ±7 =^ ±5 R =^ + 30/ 20 Y =^ + 40/ 30 0 POS G

11 ccessories oil formers ore type Sections Pins Ordering code Terminals P 5 ) P 7 PX 7/9 P 0 PX 0 ) P 3 PO T F06-T T D 2) W008-D 3) D F08-T F0-T F0-T Gullwing U terminals Gullwing PTH PTH PTH U terminals U terminals U terminals Yoke or cap oil characteristics ore type P 5 ) P 7 PX 7/9 P 0 PX 0 ) P 3 PO 3 N : Winding cross section R : Resistance factor, R = R u /N 2 L N : verage length of turn Sections N (mm 2 ) L N (mm) R (µω) Dimensions for transformers ore type w (max.) l (max.) h (max.) P 5 ) P PX 7/ P PX 0 ) P PO h l Measurements can increase, e.g. because of tin icicles, gluing points w Gullwing and molded-in U terminals Gullwing U terminal With gullwings the wire is wound direct on the terminal, which is then soldered on the circuit board. With U terminals the wire is wound on a separate pin and the lower pin is soldered to the circuit board. So gullwings are suitable for applications with thin wire (up to approx. 0,8 mm in diameter), and U terminals for use with thick wire (upwards from 0,8 mm in diameter). These figures for wire diameter are only intended as guidelines. Depending on wire diameter, the winding arrangement, the pinning and electrical requirements, one has to decide from case to case which solution is best for the particular application. ) Preliminary data 2) Insulation class F = max. operating temperature 55 3) Insulation class H = max. operating temperature 80 FL0699- FL0700-H POS G

12 Further POS Products for xdsl pplications Series Technical data Features Type Power POTS Line supply splitter card/ Film apacitors /D D/D Modem MKT, lead spacing V R : Vdc; R : nf... µf; High-frequency mm tolerance: ±5 / ±0 properties, MKT, lead spacing V R : Vdc; R : µf; surge pulse capability, mm tolerance: ±5 / ±0 stable values MKT V R : Vdc; R : nf; High-frequency tolerance: ±5 properties, V R :... Vdc; R : µf; surge pulse capability, tolerance: ±5 / ±0 stable values MI suppression V R : Vac; R : 5 nf µf; Self-healing properties, 3292* class X2 tolerance: ±0 / ±20 very small dimensions MI suppression V R : Vac; R : nf; 822 class Y2 tolerance: ±20 Tantalum apacitors High ap V R : V; R : µf; High V values 4596-H case size:,,, D, Speed Power (Low SR) V R : V; R : µf; SR 00 mω case size:, D, Multi-node V R : V; R : µf; SR 35 mω R case size: Multi-node Polymer V R : V; R : µf; Tantalum polymer tech R case size: nology, SR 5 mω Polymer V R : V; R : µf; Tantalum polymer tech R case size: V, D nology, SR 45 mω R Niobium V R : V; R : µf; Niobium anode, 7594-H/-R case size: V, D, high V values 7596-H/-R eramic apacitors PPS capacitors, series 2 Size: 0603 lass ceramics: V R : 6 V; High capacitance K9*** R : 560 pf nf values, Size: 0805 lass ceramics; V R : 6 V; small size, R : nf very stable dielectric K9*** Size: 206 lass ceramics; V R : 6 V; K9*** R : nf H capacitors, series 2 (upon request) Size: 0402 lass ceramics: V R : 6 V; Small size, K9*** R : 220 pf... nf very high capacitance Size: 0603 lass ceramics: V R : 6 V; values, R : nf very stable dielectric K9*** Size: 0805 lass ceramics: V R : 6 V; K9*** R : nf OG 3KV capacitors, series 2 Size: 82 lass ceramics (OG): V R : 3 kv; High reliable K*** R : pf performance Varistors Metal oxide varistors for 230 V mains, Surge ratings 8/20 µs: 0 pprovals: and 722**-S27 Ø mm (Ø 0 mm) to 8000 (Ø 20 mm) discs for 0 V mains, Surge ratings 8/20 µs: 0 pprovals: and 722**-S3 Ø mm (Ø 0 mm) to 8000 (Ø 20mm) discs PT Thermistors Temperature sensors Size: 0805 V max : 25 V; T NT T 5500 Ω; Overtemperature ***-62 T NT + T 3300 Ω protection of power transistors urrent limiters Primary V max : 265 V; Primary overcurrent 598**-*** R 25 : Ω protection in /D adapters Secondary V max : V; Secondary overcurrent 599**-*** R 25 : Ω protection in /D adapters POS G 2

13 Further POS Products for xdsl pplications Series Technical data Features Type Power POTS Line supply splitter card/ SMT Inductors /D D/D Modem SMT Inductors, SIMID series SIMID 20-T L R : µh; I R :up to 450m Standard T SIMID 82-T L R : µh; I R :up to 300 m High-current version T SIMID 82- L R : µh; I R :up to 600 m RF applications SIMID L R : µh; I R :up to 800 m Standard SIMID 2220-H L R : µh;i R :up to 0 m High-current version H SMT power inductors 6,8 x 6,8 x 2.8 (mm) L R : µh; I R : up to 2.60 Unshielded ,8 x 6,8 x 2.8 (mm) L R : µh; I R : up to 3.40 Shielded G4 0,8 x 0,8 x 4.5 (mm) L R : µh; I R : up to 6.80 Unshielded ,8 x 0,8 x 4.5 (mm) L R : µh; I R : up to 7.50 Shielded G4 5.8 x 5.2 x 4.5 (mm) L R : µh; I R : up to.44 Unshielded x 7,8 x 5,8 (mm) L R : µh; I R : up to 2.30 Unshielded ,8 x 9,8 x 5.4 (mm) L R : µh; I R : up to 2.60 Unshielded x 9.4 x 5. (mm) L R : µh; I R : up to 3.80 Unshielded x.6 x 8.5 (mm) L R : µh; I R : up to 3.50 Unshielded x 5.2 x 7. (mm) L R : µh; I R : up to 4.30 Unshielded hokes for Data and Signal Lines Surface-mount types, L R : up to 22 µh; I R : up to m I 82, S0 double chokes L R : up to 5 µh; I R : up to m small size L R : mh; I R : up to m Standard, high currents /-SO L R : mh; I R : up to 600 m High L values Leaded types, L R : mh; I R : up to 500 m ompact size, double chokes L R : mh; I R : up to 700 m very high L values H5 hokes for Power Lines Surface-mount types, L R : mh; I R : up to 0 m Standard, S double chokes compact size Leaded types, L R : up to 2 mh; I R : up to 0 m Standard, /-K double chokes L R : up to 47 mh; I R : up to 700 m small size 8279-G/-H L R : up to 00 mh; I R : up to 3600 m High currents 8272-/-K L R : up to 00 mh; I R : up to 800 m High L values 8273-M/-H Surge rresters 2-lectrode arresters 8-350X V sdcn : 350 V ) ; (tolerance ±20 ); Heavy duty, 88069X238 Impulse current: 20 k high surge current 0S02 capability XSMD V sdcn : 350 V ) ; (tolerance ±20 );, heavy duty, upon request Impulse current: 20 k high surge current capability 350X V sdcn : 350 V; (tolerance ±5 ); Light duty 88069X08 Impulse current: 5 k 0S02 M50-350XSMD V sdcn : 350 V ) ; (tolerance ±20 );, upon request Impulse current: 5 k miniaturized 3-lectrode arresters T63-600X V sdcn : V; Heavy duty, 88069X883 Impulse current: 20 k very high surge 002 current capability T83-600X V sdcn : 600 V; (tolerance 30/+7 ), Medium duty 88069X789 Impulse current: 0 k 0502 T600XL V sdcn : 600 V; (tolerance ±20 ), Light duty 88069X983 Impulse current: 0 k 0502 T90-230XSMD V sdcn : 230 V; (tolerance ±20 ),, 88069X668 Impulse current: 5 k miniaturized 0253 T90-230XFSMD V sdcn : 230 V; (tolerance ±20 ),, miniaturized 88069X669 Impulse current: 5 k with fail-safe 0T03 T80-90XSMD V sdcn : 90 V; (tolerance ±20 ),, upon request Impulse current: 0 k medium duty V sdcn : Nominal dc spark-over voltage / Impulse current: Nominal impulse discharge current (wave 8/20 µs) ) lso available upon request: V sdcn = e.g. 90 V, 230 V, V, 500 V, 600 V 3 POS G

14 Herausgegeben von POS G, Marketing Kommunikation Postfach 80709, 867 München, DUTSHLND (089) , FX (089) POS G. lle Rechte vorbehalten. Vervielfältigung, Veröffentlichung, Verbreitung und Verwertung dieser roschüre und ihres Inhalts ohne ausdrückliche Genehmigung der POS G nicht gestattet. Mit den ngaben in dieser roschüre werden die auelemente spezifiziert, keine igen-schaften zugesichert. estellungen unterliegen den vom ZVI empfohlenen llgemeinen Lieferbedingungen für rzeugnisse und Leistungen der lektroindustrie, soweit nichts anderes vereinbart wird. Diese roschüre ersetzt die vorige usgabe. Fragen über Technik, Preise und Liefermöglichkeiten richten Sie bitte an den Ihnen nächstgelegenen Vertrieb der POS G oder an unsere Vertriebsgesellschaften im usland. auelemente können aufgrund technischer rfordernisse Gefahrstoffe enthalten. uskünfte darüber bitten wir unter ngabe des betreffenden Typs ebenfalls über die zuständige Vertriebsgesellschaft einzuholen. Published by POS G, Marketing ommunications P.O , 867 Munich, GRMNY , FX (089) POS G. ll Rights Reserved. Reproduction, publication and dissemination of this brochure and the information contained therein without POS prior express consent is prohibited. The information contained in this brochure describes the type of component and shall not be considered as guaranteed characteristics. Purchase orders are subject to the General onditions for the Supply of Products and Services of the lectrical and lectronics Industry recommended by the ZVI (German lectrical and lectronic Manufacturers ssociation), unless otherwise agreed. This brochure replaces the previous edition. For questions on technology, prices and delivery please contact the Sales Offices of POS G or the international Representatives. Due to technical requirements components may contain dangerous substances. For information on the type in question please also contact one of our Sales Offices. POS G