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EVAL6206Q
Dual full bridge with programmable overcurrent
Data brief
AM11895v1
Features
 Voltage range from 8 to 52 V
 Phase current up to 2.5 Ar.m.s.
 Adjustable overcurrent threshold
 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
The EVAL6206Q demonstration board allows the
user to test the L6206Q functions. The dual full
bridges integrated into the L6206Q device can be
used to drive a single 2-phase stepper motor or
up to four DC motors (unidirectional). The bridges
can also operate in parallel mode. The board can
be driven using the STEVAL-PCC009V2
demonstration board and the PractiSPIN 2
evaluation software.
June 2013
DocID023042 Rev 2
For further information contact your local STMicroelectronics sales office.
1/12
www.st.com
Contents
EVAL6206Q
Contents
1
Board description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3
Bill of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4
Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5
Overcurrent threshold regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
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EVAL6206Q
1
Board description
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 input voltage
0V
High level logic input voltage
5 V / 3.3 V(1)
Switching frequency
Up to 100 kHz
Operating temperature
- 25 to +125 °C
L6206Q thermal resistance junction-to-ambient
17 °C/W
1. Logic inputs are 3.3 V and 5 V compliant.
Figure 1. Trimmer and connector locations
J3 and J4: OCDX to ENX pin connection
Power supply connector
(8 V - 52 V)
Phase A connector
Phase B connector
Control board
connector
J7 and J8
CLOSED - OCD theshold regulation
through control board.
OPEN -
Current sensing connector
OCD threshold regulation
through R13 and R15
resistors (not mounted)
AM11896v1
DocID023042 Rev 2
3/12
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Board description
EVAL6206Q
Table 2. Control board connector pinout (J2)
Pin
Type
Function
2
Ground
3
Logic input
Input IN1A of L6206Q
4
Logic input
Input IN2A of L6206Q
5
Logic input
Input IN1B of L6206Q
6
Logic input
Input IN2B of L6206Q
11
Analog input
Overcurrent threshold regulation for A bridge
12
Analog input
Overcurrent threshold regulation for B bridge
13
Ground
14
Supply voltage
3.3 V supply voltage
16
Logic input
Input ENA of L6206Q
23
Ground
24
Analog output
Board identification system ID0
25
Analog output
Board identification system ID1
27
Logic output
28
Ground
29
Logic output
30
Logic input
Others
Unconnected
Ground
Ground
Ground
Fault output for A bridge (OCDA output of L6206Q)
Ground
Fault output for B bridge (OCDB output of L6206Q)
Input ENB of L6206Q
Table 3. Current sensing connector (J9)
Pin
Type
Function
1
Ground
2
Analog output
SENSEA pin of L6206Q(1)
3
Analog output
SENSEB pin of L6206Q(1)
4
Ground
Ground
Ground
1. The R22/23 resistor and C12/13 capacitor must be added when output is used. The value of the RC
network should be chosen according to the target low-pass frequency of the filter.
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DocID023042 Rev 2
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EVAL6206Q
Schematic
Schematic
Figure 2. Schematic
$0Y
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Bill of material
3
EVAL6206Q
Bill of material
Table 4. Bill of material
6/12
Index
Quantity
Reference
Value
Package
1
1
C1
220 nF / 16 V
CAPC-0603
2
1
C2
100 µF / 63 V
CAPES-R10HXX
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
2
C8, C9
5.6 nF / 6.3 V
CAPC-0603
8
2
C10, C11
68 nF / 6.3 V
CAPC-0603
9
2
C12, C13
NM
CAPC-0603
10
1
D1
BAV99
SOT-23
11
3
J1, J5, J6
Screw connector 2 poles
MORSV-508-2P
12
1
J2
Pol. IDC male header
vertical 30 poles
CON-FLAT-15X2-180M
13
4
J3, J4, J7, J8
Jumper - CLOSE
JP2SO
14
1
J9
NM
STRIP254P-M-4
15
1
RN1
56 k
RESN-CAY16
16
5
R1, R13, R15, R22,
R23
NM
RESC-0603
17
1
R2
10 k / 1%
RESC-0603
18
1
R3
0
RESC-0603
19
1
R4
14 k/ 1%
RESC-0603
20
1
R5
100 
RESC-0603
21
2
R6, R7
100 k
RESC-0603
22
2
R8, R17
10 k
RESC-0603
23
2
R9, R12
1.5 k
RESC-0603
24
2
R10, R14
12 k
RESC-0603
25
2
R11, R16
5.6 k
RESC-0603
26
4
R18, R19, R20, R21
0/1W
RESC-2512
27
1
TP1
TPTH-RING-1MM RED
TH
28
2
TP2,TP3
TPTH-RING-1MM
BLACK
TH
29
1
U1
L6206Q
QFN (7x7_48)
DocID023042 Rev 2
EVAL6206Q
4
Layout
Layout
Figure 3. Layout (silk screen)
AM11898v1
Figure 4. Layout (top layer)
AM11899v1
DocID023042 Rev 2
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Layout
EVAL6206Q
Figure 5. Layout (inner layer 2)
AM11900v1
Figure 6. Layout (inner layer 3)
AM11901v1
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DocID023042 Rev 2
EVAL6206Q
Layout
Figure 7. Layout (bottom layer)
AM11902v1
DocID023042 Rev 2
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Overcurrent threshold regulation
5
EVAL6206Q
Overcurrent threshold regulation
Figure 8. Overcurrent threshold regulation
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EVAL6206Q
6
Revision history
Revision history
Table 5. Document revision history
Date
Revision
03-Apr-2012
1
Initial release.
2
Updated Description on page 1 (replaced “communication board” by
“demonstration board“).
Added Contents on page 2.
Added titles to Section 2: Schematic to Section 5: Overcurrent
threshold regulation.
Updated Table 1 (added value and unit to “thermal resistance
junction-to-ambient”, removed superfluous “EVAL6206Q” from title).
Updated Figure 2 (removed “EVAL6206Q” from title, completed
units, minor modifications).
Updated Table 4 (removed “EVAL6206Q” from title, corrected unit in
row 26).
Updated Figure 3 to Figure 7 (removed “EVAL6206Q” from titles).
Minor corrections throughout document.
07-Jun-2013
Changes
DocID023042 Rev 2
11/12
12
EVAL6206Q
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