for further information contact your local stmicroelectronics sales office. april 2012 doc id 023062 rev 1 1/9 9 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 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 steval- pcc009v2 communication board and the practispin 2 evaluation software. am12699v1 www.st.com
board description EVAL6235Q 2/9 doc id 023062 rev 1 1 board description figure 1. trimmer, jumper and connector locations 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 0 v high level logic input voltage 5 v / 3.3 v (1) 1. logic inputs are 3.3 v and 5 v compliant. 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 control board connector j2: and pull-ups voltage selection 1-2 = 3.3 v (default), 2-3 = 5 v 3ph bldc motor connector connector external speed loop connector off time regulation power supply connector (8 v - 52 v) j6: vref source selection 1-2 = j3 conn. (default), 2-3 = j8 conn. j4: diag to en pin connection am12700v1
EVAL6235Q board description doc id 023062 rev 1 3/9 table 2. control board connector pinout (j3) pin type function 1 power supply 5 v supply voltage 2 ground 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 ground 14 supply voltage 3.3 v 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 ground 24 analog output board identification system id0 25 analog output board identification system id1 28 ground ground 29 logic output fault output (diag output of l6235q) 30 logic input hall effect h2 signal (h2 input of l6235q) others unconnected table 3. hall effect sensors connector pinout (j7) pin type function 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 hall effect sensor supply voltage vdd (selected through j2 jumper) 5 ground ground table 4. external speed loop connector pinout (j8) pin type function 1 logic output tacho output from l6235q 2 analog output speed loop reference voltage from j3 connector 3 analog input speed loop output to l6235q vref pin (1) 1. the j6 jumper must be properly set (closed 2-3). 4 power supply supply voltage vdd (selected through j2 jumper) 5 ground ground
board description EVAL6235Q 4/9 doc id 023062 rev 1 figure 2. EVAL6235Q - schematic applic a tion reference 52v - 8 v v s gnd h1 v s gnd gnd h2 h 3 vdd gnd vref s lout vdd gnd tacho pth option h1 fw_rev h3 brake en diag id0 id1 id0 h2 id1 h2 h1 h2 h3 diag en rcoff brake fw_rev h1 h2 h3 tacho slout vref tacho slout vref rcoff vs vs 3v3 3v3 3v3 5v 5v 3v3 vdd vdd vdd vdd vs c2 100n/4v r20 56k d1 bav99 1 2 3 r19 56k u1 l62 3 5q out1 2 out1 3 nc 10 nc 11 gnd 6 gnd 31 v s b 26 v s b 27 v s a 34 v s a 35 vboot 21 epad 49 fw/rev 17 en 18 brake 20 h2 41 h1 43 diag 44 s n s a 45 s n s a 46 s n s b 15 s n s b 16 out 3 22 out 3 23 out2 38 out2 39 vcp 40 rcoff 48 rcpul s e 13 vref 19 h 3 42 nc 1 nc 4 nc 5 nc 7 nc 8 nc 9 tacho 12 nc 14 nc 24 nc 25 nc 28 nc 29 nc 30 nc 32 nc 33 nc 36 nc 37 nc 47 r7 100 j3 con-flat-15x2-180m-inline 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 + c4 100u/63v + c4a option r14 0.2/1w c3 100n/100v r17 10k c9 68n/6v3 j4 1 2 r9 10k j1 1 2 c6 100n/4v r12 4k3 j8 strip254p-m-5 1 2 3 4 5 c1 220n/16v r4 0 1 r1 nm 1 r5 100k r8 1k c8 5.6n/6v3 j6 3 1 2 r2 10k/1% r6 4k3 c10 820p/6v3 r11 100k 1 3 2 r10 47k j2 3 1 2 r3 23k2/1% r15 10k r13 0.2/1w j7 strip254p-m-5 1 2 3 4 5 r16 10k j5 1 2 3 1 c5 100n/100v r18 10k c11 10n/6v3 c7 10n/100v am12701v1
EVAL6235Q board description doc id 023062 rev 1 5/9 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 f / 63 v capes-r10h10 5 1 c4a 100 f / 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 k / 1% resc-0603 20 1 r3 23.2 k / 1% resc-0603 21 1 r4 0 resc-0603 22 1 r5 100 k resc-0603 23 2 r6, r12 4.3 k resc-0603 24 1 r7 100 resc-0603 25 1 r8 1 k resc-0603 26 5 r9, r15, r16, r17, r18 10 k resc-0603 27 1 r10 47 k resc-0603 28 1 r11 100 k trimm-100x50x110-64w 29 2 r13, r14 0.4 / 1 resc-2512 30 2 r19, r20 56 k 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
board description EVAL6235Q 6/9 doc id 023062 rev 1 figure 3. EVAL6235Q - layout (silk screen) figure 4. EVAL6235Q - layout (top layer) figure 5. EVAL6235Q - layout (inner layer 2) am12702v1 am1270 3 v1 am12704v1
EVAL6235Q board description doc id 023062 rev 1 7/9 figure 6. EVAL6235Q - layout (inner layer 3) figure 7. EVAL6235Q - layout (bottom layer) am12705v1 am12706v1
revision history EVAL6235Q 8/9 doc id 023062 rev 1 2 revision history table 6. document revision history date revision changes 11-apr-2012 1 initial release.
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