EVAL6208Q Stepper motor driver mounting the L6208Q Data brief Features ■ Voltage range from 8 V to 52 V ■ Phase current up to 2.5 Ar.m.s. ■ Adjustable PWM current control OFF-time ■ Logic inputs 5 V / 3.3 V compliant ■ Small application footprint with high thermal performance ■ Suitable for use in combination with PractiSPIN™ 2 software Description AM11912v1 The EVAL6208Q is a stepper motor driver board allowing the user to test the L6208Q functions. The board can be driven using the STEVALPCC009V2 communication board and the PractiSPIN 2 evaluation software. April 2012 Doc ID 023044 Rev 1 For further information contact your local STMicroelectronics sales office. 1/9 www.st.com 9 Board description 1 EVAL6208Q Board description Table 1. EVAL6208Q electrical specifications Parameter Value Supply voltage (VS) 8 to 52 V Maximum output current (each phase) 2.5 Ar.m.s. Low level logic input voltage 0V High level logic input voltage 5 V / 3.3 V (1) 3.3 V (2) Maximum VREFA/VREFB input voltage (J2 connector) Switching frequency Up to 100 kHz Operating temperature - 25 to +125 °C L6208Q thermal resistance junction-to-ambient TBD 1. Logic inputs are 3.3 V and 5 V compliant. 2. Equivalent to about 3.1 A peak current. Figure 1. Trimmer and connector locations Power supply connector (8 V - 52 V) Application reference area Phase A connector Phase B connector Control board connector Phase B tOFF regulation 2/9 Phase A tOFF regulation Doc ID 023044 Rev 1 AM12707v1 EVAL6208Q Board description Table 2. Control board connector pinout (J2) Pin Type Function 2 Ground 3 Logic input Active low reset of L6208Q 4 Logic input Direction input (CW/CCW input of L6208Q) 5 Logic input Decay mode selection input (CONTROL input of L6208Q) 6 Logic input Step clock input (CLOCK input of L6208Q) 11 Analog input Reference voltage for phase A current control 12 Analog input Reference voltage for phase B current control 13 Ground 14 Supply voltage 16 Logic input 23 Ground 24 Analog output Board identification system ID0 25 Analog output Board identification system ID1 28 Ground 29 Logic output 30 Logic input Others Unconnected Ground Ground 3.3 V supply voltage Device enable input (EN input of L6208Q) Ground Ground Fault output (EN output of L6208Q) Step mode selection input (HALF/FULL input of L6208Q Doc ID 023044 Rev 1 3/9 4/9 1 2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 52V - 8V J1 1 Doc ID 023044 Rev 1 R8 10k DIAG HALF_FULL ID0 ID1 3V3 1 EN RESET CW_CCW CONTROL CLOCK GND R1 NM 3 R21 R22 R23 R24 R9 1k R11 1k RCB RCA 56k 56k 56k 56k R10 4k3 R19 12k ID1 R2 10k/1% R4 20k/1% C3 100n/4V R7 4k3 R13 200k 2 R20 56k 3V3 3 R18 12k R12 200k 2 R3 0 ID0 TP2 3V3 EN C5 100n/4V C10 68n/6V3 C9 68n/6V3 C8 5.6n/6V3 R6 100k C2 100u/63V Application reference + C11 820p/6V3 1 4 5 7 8 9 12 14 24 17 13 42 48 20 43 44 19 18 41 GND NC NC NC NC NC NC NC NC NC 49 6 21 NC NC NC NC NC NC NC NC NC OUT2B OUT2B OUT1B OUT1B OUT2A OUT2A 45 46 16 C2A OPTION SENSEB R16 R17 0.4/1W 0.4/1W 15 25 28 29 30 32 33 36 37 47 22 23 10 11 38 39 2 3 + VS PTH OPTION OUT1A OUT1A VBOOT SNSA SNSA SNSB SNSB R14 R15 0.4/1W 0.4/1W SENSEA 31 EPAD GNDGND TP3 VREFB RCB VREFA RCA L6208Q 40 34 10n/100V R5 100 C7 VCP 27 3 2 35 26 BAV99 1 D1 220n/16V VSB VSB VSA VSA EN CLOCK CW/CCW CONTROL HALF/FULL RESET U1 C6 100n/100V C12 820p/6V3 RCB RCA DIAG CLOCK CW_CCW CONTROL HALF_FULL RESET C4 100n/100V VS C1 2 1 1 2 J4 J3 OUT2B OUT1B OUT2A OUT1A Figure 2. CON-FLAT-15X2-180M-INLINE J2 GND VS TP1 VS VS Board description EVAL6208Q EVAL6208Q - Schematic 1 1 1 AM11913v1 EVAL6208Q Board description Table 3. EVAL6208Q - bill of material Index Quantity Reference Value Package 1 1 C1 220 nF /16 V CAPC-0603 2 1 C2 100 µF / 63 V CAPES-R10H10 3 1 C2A 100 µF / 63 V (OPTION) CAPE-R8H12-P35 4 2 C3,C5 100 nF / 4 V CAPC-0603 5 2 C4,C6 100 nF / 100 V CAPC-0805 6 1 C7 10 nF / 100 V CAPC-0805 7 1 C8 5.6 nF / 6V3 CAPC-0603 8 2 C9,C10 68 nF / 6V3 CAPC-0603 9 2 C11,C12 820 pF / 6V3 CAPC-0603 10 1 D1 BAV99 SOT23 11 3 J1,J3,J4 Screw connector 2 poles MORSV-508-2P 12 1 J2 Pol. IDC male header vertical 30 poles CON-FLAT-15X2-180M 13 1 R1 NM RESC-0603 14 1 R2 10 kΩ / 1% RESC-0603 15 1 R3 0 RESC-0603 16 1 R4 20 kΩ /1% RESC-0603 17 1 R5 100 Ω RESC-0603 18 1 R6 100 kΩ RESC-0603 19 2 R7,R10 4.3 Ω RESC-0603 20 1 R8 10 kΩ RESC-0603 21 2 R9,R11 1 kΩ RESC-0603 22 2 R12,R13 200 kΩ TRIMM-100x50x110-64W 23 4 R14,R15,R16,R17 0.4 Ω / 1 Ω RESC-2512 24 2 R18,R19 12 kΩ RESC-0603 25 5 R20,R21,R22,R23,R2 4 56 kΩ RESC-0603 26 1 TP1 TPTH-RING-1MM RED TH 27 2 TP2,TP3 TPTH-RING-1MM BLACK TH 28 1 U1 L6208Q QFN7x7_48 Doc ID 023044 Rev 1 5/9 Board description Figure 3. EVAL6208Q EVAL6208Q - layout (silk screen) AM11914v1 Figure 4. EVAL6208Q - layout (top layer) AM11915v1 Figure 5. EVAL6208Q - layout (inner layer 2) AM12696v1 6/9 Doc ID 023044 Rev 1 EVAL6208Q Board description Figure 6. EVAL6208Q - layout (inner layer 3) AM12697v1 Figure 7. EVAL6208Q - layout (bottom layer) AM12698v1 Doc ID 023044 Rev 1 7/9 Revision history 2 EVAL6208Q Revision history Table 4. 8/9 Document revision history Date Revision 03-Apr-2012 1 Changes Initial release. Doc ID 023044 Rev 1 EVAL6208Q 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. 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. 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