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 2012Doc ID 023062 Rev 11/9
For further information contact your local STMicroelectronics sales office.
www.st.com
9
Board descriptionEVAL6235Q
1 Board description
Table 1.EVAL6208Q electrical specifications
ParameterValue
Supply voltage (VS)8 to 52 V
Maximum output current (each phase)2.5 Ar.m.s.
Low level logic input voltage0 V
High level logic input voltage5 V / 3.3 V
Maximum VREF input voltage (J2 connector)3.3 V
Switching frequencyUp to 100 kHz
Operating temperature- 25 to +125 °C
L6235Q thermal resistance junction-to-ambientTBD
1. Logic inputs are 3.3 V and 5 V compliant.
Figure 1.Trimmer, jumper and connector locations
J4: DIAG to EN
pin connection
Power supply connector
(8 V - 52 V)
(1)
3ph BLDC motor
connector
J6: VREF source selection
1-2 = J3 conn. (default), 2-3 = J8 conn.
OFF time regulation
External speed loop
connector
connector
Control board
connector
J2:
and pull-ups voltage selection
1-2 = 3.3 V (default), 2-3 = 5 V
AM12700v1
2/9Doc ID 023062 Rev 1
EVAL6235QBoard description
Table 2.Control board connector pinout (J3)
PinTypeFunction
1Power supply5 V supply voltage
2GroundGround
3Logic outputHall effect H1 signal (H1 input of L6235Q)
4Logic inputDirection input (FW/REV input of L6235Q)
5Logic outputHall effect H3 signal (H3 input of L6235Q)
6Logic inputMotor brake input (BRAKE input of L6235Q)
11Analog inputReference voltage for current control system
13GroundGround
14Supply voltage3.3 V supply voltage
15Logic outputHall effect H2 signal (H2 input of L6235Q)
16Logic inputDevice enable input (EN input of L6235Q)
23GroundGround
24Analog outputBoard identification system ID0
25Analog outputBoard identification system ID1
28GroundGround
29Logic outputFault output (DIAG output of L6235Q)
30Logic inputHall effect H2 signal (H2 input of L6235Q)
OthersUnconnected
Table 3.Hall effect sensors connector pinout (J7)
PinTypeFunction
1Logic inputHall effect H1 signal (H1 input of L6235Q)
2Logic inputHall effect H2 signal (H2 input of L6235Q)
3Logic inputHall effect H3 signal (H3 input of L6235Q)
4Power supplyHall effect sensor supply voltage VDD (selected through J2 jumper)
5GroundGround
Table 4.External speed loop connector pinout (J8)
PinTypeFunction
1Logic outputTACHO output from L6235Q
2Analog outputSpeed loop reference voltage from J3 connector
3Analog inputSpeed loop output to L6235Q VREF pin
(1)
4Power supplySupply voltage VDD (selected through J2 jumper)
5GroundGround
1. The J6 jumper must be properly set (closed 2-3).
Doc ID 023062 Rev 13/9
Board descriptionEVAL6235Q
Figure 2.EVAL6235Q - schematic
J5
123
C4A
OPTION
+
PTH OPTION
220n/16V
C1
VS
21
10n/100V
C7
3
D1
BAV99
12
C5
100n/100V
40
R7 100
35
34
27
26
U1
VBOOT
VCP
VSA
VSA
VSB
VSB
44
DIAG
3
OUT12OUT1
BRAKE20H241H1
17EN18
FW/REV
43
L6235Q
42
OUT238OUT2
H3
39
RCOFF48RCPULSE13VREF
19
23
OUT322OUT3
TACHO
12
NC25NC28NC29NC30NC32NC33NC36NC37NC
NC1NC4NC5NC7NC8NC
47
R13
0.2/1W
16
SNSB
15
SNSB
46
SNSA
SNSA
GND
GND
EPAD
NC10NC
NC14NC
9
11
24
R14
0.2/1W
45
31
6
49
Application reference
3V33V3
1
1
VSGND
VS
1
2
J1
VS
GND
R2
R1
52V - 8V
VS
10k/1%
NM
DIAG
BRAKE
J4
12
R5 100k
R20 56k
R19 56k
FW_REVH3BRAKE
H1
FW_REVH1H2
C8
EN
C3
100n/100V
+
C4
100u/63V
C6
100n/4V
R3
ID1
23k2/1%
C2
100n/4V
0
R4
ID0
5V3V3VDD
31
J2
5V
2
1234567891011121314151617181920212223242526272829
J3
5.6n/6V3
R6 4k3
3V3
RCOFF
H3
31
VREF
1k
R8
TACHO
C11
10n/6V3
R10
SLOUT
10k
47k
C10
820p/6V3
RCOFF
ID0
1
GND
VDD
R18
10k
R11
100K
3
ID1
1
R12
2
4k3
DIAG
H2
30
CON-FLAT-15X2-180M-INLINE
R17
R16
R15
VDDVDD
AM12701v1
10k
10k
10k
VREF
TACHO
12345
J8
VREF
TACHO
H1H2H3
12345
J7
H2H3VDD
H1
SLOUT
SLOUT
VDD
STRIP254P-M-5
GND
GND
STRIP254P-M-5
C9
68n/6V3
2
J6
R9
EN
H2
4/9Doc ID 023062 Rev 1
EVAL6235QBoard description
Table 5.EVAL6235Q - bill of material
Index QuantityReferenceValuePackage
11C1220 nF / 16 VCAPC-0603
22C2, C6100 nF / 4 VCAPC-0603
32C3, C5100 nF / 100 VCAPC-0805
41C4100 µF / 63 VCAPES-R10H10
51C4A100 µF / 63 V (option)CAPE-R8H12-P35
61C710 nF / 100 VCAPC-0805
71C85.6 nF / 6V3CAPC-0603
81C968 nF / 6V3CAPC-0603
91C10820 pF / 6V3CAPC-0603
101C1110 nF / 6V3CAPC-0603
111D1BAV99SOT23
121J1Screw connector 2 polesMORSV-508-2P
132J2, J6Jumper - close 12JP3SO
141J3
151J4Jumper - closeJP2SO
161J5Screw connector 3 polesMORSV-508-3P
172J7, J8Pin strip header 1x5 polesSTRIP254P-M-5
181R1NMRESC-0603
191R210 kΩ / 1%RESC-0603
201R323.2 kΩ / 1%RESC-0603
211R40 ΩRESC-0603
221R5100 kΩRESC-0603
232R6, R124.3 kΩRESC-0603
241R7100 ΩRESC-0603
251R81 kΩRESC-0603
265R9, R15, R16, R17, R1810 kΩRESC-0603
271R1047 kΩRESC-0603
281R11100 kΩTRIMM-100x50x110-64W
292R13, R140.4 Ω / 1 ΩRESC-2512
302R19, R2056 kΩRESC-0603
Pol. IDC male header
vertical 30 poles
CON-FLAT-15X2-180M
311TP1TPTH-RING-1 mm redTH
322TP2, TP3TPTH-RING-1 mm blackTH
331U1L6235QQFN7x7_48
Doc ID 023062 Rev 15/9
Board descriptionEVAL6235Q
Figure 3.EVAL6235Q - layout (silk screen)
AM12702v1
Figure 4.EVAL6235Q - layout (top layer)
Figure 5.EVAL6235Q - layout (inner layer 2)
6/9Doc ID 023062 Rev 1
AM1270
3v1
AM12704v1
EVAL6235QBoard description
Figure 6.EVAL6235Q - layout (inner layer 3)
AM12705v1
Figure 7.EVAL6235Q - layout (bottom layer)
AM12706v1
Doc ID 023062 Rev 17/9
Revision historyEVAL6235Q
2 Revision history
Table 6.Document revision history
DateRevisionChanges
11-Apr-20121Initial release.
8/9Doc ID 023062 Rev 1
EVAL6235Q
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