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EVAL6207Q
Dual full bridge with integrated PWM current controllers
Data brief
Description
The EVAL6207Q is a dual full bridge driver board
allowing the user to test the L6207Q functions.
The dual full bridges integrated into the L6207Q
can be used to drive a single two phase stepper
motor or up to four DC motors (unidirectional).
The device also includes two independent
constant OFF time PWM current controllers.
The board can be driven using the STEVALPCC009V2 communication board and the
PractiSPINTM 2 evaluation software.
Features
 Voltage range from 8 V to 52 V
 Phase current up to 2.5 Ar.m.s.
 Adjustable constant tOFF PWM current control
 Logic inputs 5 V / 3.3 V compliant
 Small application footprint with high thermal
performance
 Suitable to be used in combination with
PractiSPINTM 2 software
August 2013
DocID025098 Rev 1
For further information contact your local STMicroelectronics sales office.
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www.st.com
Board description
1
EVAL6207Q
Board description
.
Table 1. Electrical specifications
Parameter
Value
Supply voltage (VS)
8 to 52 V
Maximum output current (each phase)
2.5 Ar.m.s.
Low level logic inputs voltage
0V
High level logic input voltage
5 V / 3.3 V(1)
Maximum VREFA/VREFB input voltage
3.3 V(2)
Switching frequency
Up to 100 kHz
Operating temperature
-25 to +125 °C
L6207Q thermal resistance junction-to-ambient
17° C/W
1. Logic inputs are 3.3 V and 5 V compliant.
2. Equivalent to about 3.1 A peak current.
Figure 1. Trimmers and connectors location
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EVAL6207Q
Board description
Table 2. Control board connector pinout (J2)
Pin
Type
Function
2
Ground
Ground
3
Logic input
Input IN1A of L6207Q
4
Logic input
Input IN2A of L6207Q
5
Logic input
Input IN1B of L6207Q
6
Logic input
Input IN2B of L6207Q
11
Analog input
Overcurrent threshold regulation for A bridge
12
Analog input
Overcurrent threshold regulation for B bridge
13
Ground
Ground
14
Supply voltage
3.3 V supply voltage
16
Logic input
Input ENA of L6207Q
23
Ground
Ground
24
Analog output
Board identification system ID0
25
Analog output
Board identification system ID1
27
Logic output
Fault output for B bridge
28
Ground
Ground
29
Logic output
Fault output for A bridge
30
Logic input
Input ENB of L6207Q
Others
Unconnected
Table 3. Current sensing connector (J9)
Pin
Type
Function
1
Ground
Ground
2
Analog output
SENSEA pins of L6207Q(1)
3
Analog output
SENSEB pins of L6207Q(1)
4
Ground
Ground
1. R22/23 resistors and C12/13 capacitors must be added when output is used. The value of RC network
should be chosen according to the target low pass frequency of the filter.
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Schematic
EVAL6207Q
Schematic
Figure 2. Schematic
EVAL6207Q
3
Bill of material
Bill of material
Table 4. Bill of material
Index Quantity
Reference
Value
Package
1
1
C2
100 F/63 V
CAPES-R10H10
2
1
C2A
100 F/63 V (option)
CAPE-R8H12-P35
3
1
C1
220 nF/16 V
CAPC-0603
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
2
C8, C9
5.6 nF/6.3 V
CAPC-0603
8
2
C10, C11
68 nF/6.3 V
CAPC-0603
9
2
C14, C15
820 pF/6.3 V
CAPC-0603
10
2
C12, C13
NM
CAPC-0603
11
1
D1
BAT54SFILM
SOT-23
12
3
J1, J5, J6
Screw connector 2 poles
MORSV-508-2P
13
1
J2
Pol. IDC male header vertical 30 poles
CON-FLAT-15X2-180M
14
1
J9
N.M.
STRIP254P-M-4
15
1
RN1
56 k
RESN-CAY16
16
1
R1
N.M.
RESC-0603
17
1
R2
10 k/1%
RESC-0603
18
1
R3
0
RESC-0603
19
1
R4
16.9 k/1%
RESC-0603
20
1
R5
100
RESC-0603
21
4
R6, R7, R8, R17
100 k
RESC-0603
22
2
R10, R14
4.3 k
RESC-0603
23
2
R11, R16
1 k
RESC-0603
24
4
R18, R19, R20, R21
0.4 /1 W
RESC-2512
25
2
R22, R23
N.M.
RESC-0603
26
2
P1, P2
200 k
TRIMM-100X50X110-64W
27
2
R24, R25
12 k
RESC-0603
28
1
TP1
TPTH-RING-1MM RED
TPTH-RING-1MM
29
2
TP2, TP3
TPTH-RING-1MM BLACK
TPTH-RING-1MM
30
1
U1
L6207Q
QFN7X7_48L
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Layout
4
EVAL6207Q
Layout
Figure 3. Layout (silk screen)
Figure 4. Layout (top layer)
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Layout
Figure 5. Layout (inner layer 2)
Figure 6. Layout (inner layer 3)
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Layout
EVAL6207Q
Figure 7. Layout (bottom layer)
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EVAL6207Q
5
OFF time setting
OFF time setting
Figure 8. OFF time vs. Roff and Coff
5 RII
W2)) > V@
5 RII
5 RII
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Revision history
Table 5. Document revision history
Date
Revision
07-Aug-2013
1
Changes
Initial release.
DocID025098 Rev 1
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EVAL6207Q
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