EVAL6235Q 3-phase BLDC motor driver mounting the L6235Q 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 ■ Hall sensor inputs ■ External speed loop ■ Small application footprint with high thermal performance ■ Suitable for use in combination with PractiSPIN™ 2 software AM12699v1 Description The EVAL6235Q is a 3-phase BLDC motor driver board that allows the user to test the L6235Q functions. The board can be driven using the STEVALPCC009V2 communication board and the PractiSPIN 2 evaluation software. April 2012 Doc ID 023062 Rev 1 For further information contact your local STMicroelectronics sales office. 1/9 www.st.com 9 Board description 1 EVAL6235Q 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) Maximum VREF input voltage (J2 connector) 3.3 V Switching frequency Up to 100 kHz Operating temperature - 25 to +125 °C L6235Q thermal resistance junction-to-ambient TBD 1. Logic inputs are 3.3 V and 5 V compliant. Figure 1. Trimmer, jumper and connector locations Power supply connector (8 V - 52 V) J4: DIAG to EN pin connection 3ph BLDC motor connector Control board connector J6: VREF source selection 1-2 = J3 conn. (default), 2-3 = J8 conn. J2: and pull-ups voltage selection 1-2 = 3.3 V (default), 2-3 = 5 V External speed loop connector OFF time regulation 2/9 Doc ID 023062 Rev 1 connector AM12700v1 EVAL6235Q Board description Table 2. Control board connector pinout (J3) Pin Type 1 Power supply 2 Ground 3 Logic output Hall effect H1 signal (H1 input of L6235Q) 4 Logic input Direction input (FW/REV input of L6235Q) 5 Logic output Hall effect H3 signal (H3 input of L6235Q) 6 Logic input Motor brake input (BRAKE input of L6235Q) 11 Analog input Reference voltage for current control system 13 Ground 14 Supply voltage 15 Logic output Hall effect H2 signal (H2 input of L6235Q) 16 Logic input Device enable input (EN input of L6235Q) 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 Table 3. Function 5 V supply voltage Ground Ground 3.3 V supply voltage Ground Ground Fault output (DIAG output of L6235Q) Hall effect H2 signal (H2 input of L6235Q) Hall effect sensors connector pinout (J7) Pin Type 1 Logic input Hall effect H1 signal (H1 input of L6235Q) 2 Logic input Hall effect H2 signal (H2 input of L6235Q) 3 Logic input Hall effect H3 signal (H3 input of L6235Q) 4 Power supply 5 Ground Table 4. Function Hall effect sensor supply voltage VDD (selected through J2 jumper) Ground External speed loop connector pinout (J8) Pin Type Function 1 Logic output 2 Analog output 3 Analog input Speed loop output to L6235Q VREF pin (1) 4 Power supply Supply voltage VDD (selected through J2 jumper) 5 Ground TACHO output from L6235Q Speed loop reference voltage from J3 connector Ground 1. The J6 jumper must be properly set (closed 2-3). Doc ID 023062 Rev 1 3/9 4/9 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 2 3 Doc ID 023062 Rev 1 DIAG H2 ID0 ID1 H2 H3 H1 5V R9 10k EN AM12701v1 1 2 3 4 5 STRIP254P-M-5 J7 R16 10k H1 H2 H3 R17 10k R12 4k3 2 1 R15 10k R8 1k R6 4k3 R20 56k R19 56k 3 VDD R4 0 ID0 R11 J8 1 TACHO 2 VREF 3 SLOUT 4 5 R18 10k VDD STRIP254P-M-5 TACHO VREF SLOUT VDD GND 100K VREF SLOUT RCOFF C2 100n/4V R3 23k2/1% ID1 1 H1 H2 H3 VDD GND 3V3 BRAKE FW_REV VDD R2 10k/1% 3V3 3 CON-FLAT-15X2-180M-INLINE J3 1 J2 5V R1 NM 3V3 VDD J6 2 EN C6 100n/4V GND C10 R10 820p/6V3 47k + J4 2 C11 10n/6V3 TACHO RCOFF BRAKE FW_REV H1 H2 H3 DIAG C3 100n/100V VS C8 5.6n/6V3 1 C9 68n/6V3 R5 100k C4 100u/63V Application reference 1 4 5 7 8 9 10 11 14 24 13 12 48 19 44 18 20 17 43 41 42 NC NC NC NC NC NC NC NC NC NC 49 6 31 EPAD GNDGND L6235Q 21 VBOOT NC NC NC NC NC NC NC NC NC OUT3 OUT3 OUT2 OUT2 OUT1 OUT1 46 R14 0.2/1W 45 15 25 28 29 30 32 33 36 37 47 22 23 38 39 2 3 + VS C4A OPTION PTH OPTION R13 0.2/1W 16 SNSA SNSA SNSB SNSB 40 34 VCP 27 10n/100V R7 100 C7 35 26 3 2 220n/16V VSB VSB VSA VSA RCPULSE TACHO RCOFF VREF DIAG EN BRAKE FW/REV H1 H2 H3 U1 C5 100n/100V BAV99 1 D1 C1 3 2 1 J5 Figure 2. 3V3 GND VS 1 52V - 8V 1 2 VS 1 GND VS J1 Board description EVAL6235Q EVAL6235Q - schematic 1 EVAL6235Q Board description Table 5. EVAL6235Q - bill of material Index Quantity Reference Value Package 1 1 C1 220 nF / 16 V CAPC-0603 2 2 C2, C6 100 nF / 4 V CAPC-0603 3 2 C3, C5 100 nF / 100 V CAPC-0805 4 1 C4 100 µF / 63 V CAPES-R10H10 5 1 C4A 100 µF / 63 V (option) CAPE-R8H12-P35 6 1 C7 10 nF / 100 V CAPC-0805 7 1 C8 5.6 nF / 6V3 CAPC-0603 8 1 C9 68 nF / 6V3 CAPC-0603 9 1 C10 820 pF / 6V3 CAPC-0603 10 1 C11 10 nF / 6V3 CAPC-0603 11 1 D1 BAV99 SOT23 12 1 J1 Screw connector 2 poles MORSV-508-2P 13 2 J2, J6 Jumper - close 12 JP3SO 14 1 J3 Pol. IDC male header vertical 30 poles CON-FLAT-15X2-180M 15 1 J4 Jumper - close JP2SO 16 1 J5 Screw connector 3 poles MORSV-508-3P 17 2 J7, J8 Pin strip header 1x5 poles STRIP254P-M-5 18 1 R1 NM RESC-0603 19 1 R2 10 kΩ / 1% RESC-0603 20 1 R3 23.2 kΩ / 1% RESC-0603 21 1 R4 0Ω RESC-0603 22 1 R5 100 kΩ RESC-0603 23 2 R6, R12 4.3 kΩ RESC-0603 24 1 R7 100 Ω RESC-0603 25 1 R8 1 kΩ RESC-0603 26 5 R9, R15, R16, R17, R18 10 kΩ RESC-0603 27 1 R10 47 kΩ RESC-0603 28 1 R11 100 kΩ TRIMM-100x50x110-64W 29 2 R13, R14 0.4 Ω / 1 Ω RESC-2512 30 2 R19, R20 56 kΩ RESC-0603 31 1 TP1 TPTH-RING-1 mm red TH 32 2 TP2, TP3 TPTH-RING-1 mm black TH 33 1 U1 L6235Q QFN7x7_48 Doc ID 023062 Rev 1 5/9 Board description Figure 3. EVAL6235Q EVAL6235Q - layout (silk screen) AM12702v1 Figure 4. EVAL6235Q - layout (top layer) AM12703v1 Figure 5. EVAL6235Q - layout (inner layer 2) AM12704v1 6/9 Doc ID 023062 Rev 1 EVAL6235Q Board description Figure 6. EVAL6235Q - layout (inner layer 3) AM12705v1 Figure 7. EVAL6235Q - layout (bottom layer) AM12706v1 Doc ID 023062 Rev 1 7/9 Revision history 2 EVAL6235Q Revision history Table 6. 8/9 Document revision history Date Revision 11-Apr-2012 1 Changes Initial release. Doc ID 023062 Rev 1 EVAL6235Q 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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