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UM0271 User manual Evaluation board with STLC3075 SLIC for WLL Abstract This document is a simple user manual of the STLC3075 evaluation board, it is not a description of the device functionalities. This description is available in the STLC3075 data sheet and Application note (AN2132) documents. ) s ( t c u d o r P e t e l o s b O July 2006 ) s t( c u d o r P e t e l o s b O - Rev 1 1/8 www.st.com www.BDTIC.com/ST Contents UM0271 Contents 1 2 STLC3075 Evaluation board description . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 Transition between Ringing and Active mode . . . . . . . . . . . . . . . . . . . . . . 4 1.2 Fly-Back or Buck-Boost configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 c u d e t le ) s ( ct o r P o s b O - u d o r P e t e l o s b O 2/7 www.BDTIC.com/ST ) s t( UM0271 1 STLC3075 Evaluation board description STLC3075 Evaluation board description The board is provided of a set of external connectors that permits to test all the functionalities of the STLC3075 chip. In Figure 1 is shown the placement of the external connectors and components inside the board. Following the description of these connectors. ● VPOS is the positive supplier voltage provided to the SLIC. ● SYST-GND is the ground of the board. ● VBAT and VBAT/DC-DC are two outputs and they must be connected together by means a short circuit. They allow to monitor the VBAT behavior. ● TIP and RING are the 2W local loop port. ● RX and TX are the 4W port (TX output, RX input) ● D0/TTX is a control bit (used for ringing and TTX injection) ● D2/RINGER is used to generate the ringing signal: it is a square wave input (from 20Hz to 50Hz) ● CKTTX is the metering pulse clock input (12 or 16 KHz square wave). ● CLK/DC-DC is the 125KHz clock input for the DC-DC converter. External CLK will arrive on the CLK pin connecting by the bridge EXTCK point with CLK. Using this type of connection (EXTCK with CLK) and no external CLK signal (125KHz) is present, the DC-DC converter goes in turn-off condition. Instead connecting the CLK with CVCC, it will be possible to operate in autoscillation mode (the board is usually set in this configuration). c u d e t le ) s t( o r P o s b O - Switches D0, D1, D2, PD, GAIN SET are used to select the operating mode of the device. ) s ( ct u d o r P e t e l o s b O 3/8 www.BDTIC.com/ST STLC3075 Evaluation board description Figure 1. UM0271 Component and connectors placement of STLC3075 evaluation board. c u d 10 mm e t le 1.1 ) s t( o r P o s Transition between Ringing and b Active mode O ) s ( t c u d Fly-Backro or Buck-Boost configuration P ete The board haven't got the possibility to switch automatically from Ringing to Active mode (automatic Ring Trip detection) but it is necessary to move manually in the correct position the D0 and D1 switches and remove the input square wave applied to D2/RINGER connector. 1.2 l o s b O The board has the possibility, by proper modification, to choose the device configuration: Fly-Back or Buck-Boost. When the STLC3075 have to work in Fly-back configuration, it is necessary to modify some connection: – connect capacitor C10 (120pF) and 1 Kohm resistor (R6) at point 1 and 2 of S6 – short circuit, by a wire, R35 resistor – connect the R34 resistor (0.22ohm) – connect, by a drop of tin, point 1 and 2 of S7 – connect the proper N-channel mos type STN4NF03L 4/8 www.BDTIC.com/ST UM0271 STLC3075 Evaluation board description When the STLC3075 have to work in Buck-Boost configuration, it is necessary to modify: – remove capacitor C10 (120pF) and 1 Kohm resistor (R6) on S6 – short circuit, by a drop of tin, RB resistor – connect the R35,R35A resistor (2x.0.22ohm) – connect the proper inductor (L1) SUMIDA, CDRH125 on the R34,R34A position – connect by a drop of tin, point 2 and 3 of S6 and S7 – connect the proper P-channel mos type IRF9510/20 The board can be set in Fly-back or Buck-Boost configuration with two external transformer modules or with the proper coil (see AN2132). On the board, PTC resistors are not provided. c u d e t le ) s ( ct ) s t( o r P o s b O - u d o r P e t e l o s b O 5/8 www.BDTIC.com/ST GND CONNECTION S5 S4 S3 S2 S1 6/8 www.BDTIC.com/ST R7 0 Ohm 0 Ohm R9 GND GND 10K 51R GND GND GND 16.2K R39 30K R3 R2 25K R1 PGND BGND AGND GND C4 1.5nF 16.2K R40 51R 120pF C3 120pF C1 10K J6 CKTTX 5K R38 GND R11 600R R18 10K R17 R16 10K R15 51R 10K R14 R12 R13 R5 68K GND R4 30K 16 12 C16 100nF 10 9 8 5 4 3 2 1 7 6 17 14 15 RS R19 15K FTTX CTTX2 CTTX1 CKTTX GAIN SET PD D2 D1 D0 DET_ N.C. ZB ZAC1 ZAC GND C6 100nF 27 STLC3075 C15 100nF CRD 100nF R20* 4.12K 22uF C5 GND C17=15nF R20=2.2K (*):for 5REN USA R23 26.1K R22 52.3K GATE C18 1.5nF CLK RING TIP N.C. N.C. N.C. N.C. N.C. CZ VF VBAT1 VBAT RSENSE 23 37 41 42 40 39 38 22 20 21 44 36 25 24 U1 R25 28.7K GND 30R R28 30R R29 1 2 3 JCLK S6 R30 51R GND CLK/DC-DC (125KHz) EXTCK CVCC GND GND 2 CVB 470nF/100V C10 120pF CZ 2.2nF 0R R35 ) s t( 4 3 2 1 R31 9.1K RING NC GATE TIP GND R32 300K 1 3 Q2: C9,C12: 47uF/100V D1: SMBYW01-200 Diodes D5,D6 can be replaced with the LCP1511D C17* 22nF c u d SYSTEM GND GND J4 D2/RINGER GND J3 D0/TTX Q1 DL2 R8 3K GND RTTX 11 J1 TX 13 RX 28 AGND 35 BGND 26 VPOS 19 TX CAC 18 IRF 30 CSVR CVCC RLIM 29 ILTF 33 RTH 31 RD 32 CREV o r P 43 RING GND GND TIP LCP1521S U2 8 5 6 7 47uF C12 47uF C9 1K R6 Rb** 0R 1 4 6 DZ2 39V VBAT 2 GND 1 S7 D2 D3 TIP RING CR* 20R 120pF R/PTC1 20R R/PTC L1** CDRH125 CT* 120pF R34* 220mOhm GND 3 D4 D5 1 RING 1 TIP VBAT 1 1 VBAT DC/DC 1 PGND 47nF STN4NF03L DZ1 39V 3 T1 SYST.GND D1 Q2 1 C7 47uF C8 47uF C14 VPOS 1 s b O t e l o + r P e u d o ) s ( ct o s b O e t le 34 Figure 2. + J2 RX STLC3075 Evaluation board description UM0271 Schematic of STLC3075 evaluation board UM0271 2 Revision history Revision history Table 1. Document revision history Date Revision 18-Jul-2006 1 Changes Initial release. c u d e t le ) s ( ct ) s t( o r P o s b O - u d o r P e t e l o s b O 7/8 www.BDTIC.com/ST UM0271 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. c u d ) s t( Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. 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