STEVAL385LED4CH
200 W, digital 4-LED channels demonstration board with
STLUX385A-controlled current regulation and dimming
Data brief
The STEVAL385LED4CH device implements
inversed buck topology to drive each LED
channel. The SMED technology integrated in the
STLUX385A device regulates the LED current,
exploiting the fixed-off-time (FOT) principle. Each
channel can output current in the range of
250 mA to 1 A.
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The number of LEDs, the current and the PWM
dimming working point can be set through the
command interpreter, accessible via the serial
interface. Dimming can also be manually adjusted
via the three on-board buttons.
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Features
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The demonstration board can be optionally
controlled via a DALI interface. The DALI
connection board is available separately (part
number STEVAL-ILM001V1). The STLUX385A
DALI software drivers and application firmware
are available.
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Based on the STLUX385A digital controller
Up to 200 W
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4 LED channels
Adjustable LED current and dimming
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Adaptive voltage compensation
This demonstration board is available also with an
order code STEVAL-ILL057V1.
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Real-time fault detection and protection
(e.g: short or open circuit)
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Serial interface
DALI (optional)
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Description
The STEVAL385LED4CH demonstration board is
a complete and configurable solution to manage
four independent high-brightness LED channels
using the STLUX385A digital controller. The
STLUX385A is a part of the STMicroelectronics®
STLUX™ product family and embeds advanced
peripherals tailored to generate high resolution
PWM signals (SMED).
May 2014
DocID024374 Rev 2
For further information contact your local STMicroelectronics sales office.
1/10
www.st.com
Board description
1
STEVAL385LED4CH
Board description
Figure 1. Jumper and connector location
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Table 1. Connector pinout
Name
Function
Power IN (J9)
Input power connection. Range: 12 - 48 V.
DALI
DALI connector.
Compatible with STEVAL-ILM001V1 demonstration board.
UART
Serial link.
Connector: jack mono 3.5 mm
The UART cable is provided with the demonstration board.
SWIM
SWIM interface.
CH0 (J6)
LED string connector, channel 0.
CH1 (J8)
LED string connector, channel 1.
CH2 (J5)
LED string connector, channel 2.
CH3 (J7)
LED string connector, channel 3.
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STEVAL385LED4CH
Board description
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Board description
STEVAL385LED4CH
Figure 3. STEVAL385LED4CH - schematic 2 of 3
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STEVAL385LED4CH
Board description
Figure 4. STEVAL385LED4CH - schematic 3 of 3
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Bill of material
2
STEVAL385LED4CH
Bill of material
Table 2. STEVAL385LED4CH - bill of material
Item Qty.
Reference
Part value
Decal
Note
10 V
1
2
C1, C4
1 µF
CAPC-0603
2
4
C2, C8, C43, C45
10 nF
CAPC-0603
3
8
C3, C19, C20, C31, C32, C40, C44,
C46
100 nF
CAPC-0603
4
2
C5, C6
12 pF - N. M.
CAPC-0603
5
1
C7
4.7 nF
CAPC-0603
6
4
C9, C11, C21, C23
10 nF
CAPC-1206
7
4
C10, C12, C22, C24
1 µF
CAPC-1206
8
4
C13, C14, C25, C26
1 nF
9
8
C15, C16, C17, C18, C27, C28,
C29, C30
10 nF
10
6
C33, C38, C42, C47, C48, C49
100 nF
11
2
C34, C37
12
1
C35
13
1
C36
14
1
C39
15
1
C41
16
1
17
1
18
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25 V
CAPC-1206
100 V
150 pF
CAPC-0805
25 V
22 µF
D250P100
100 V
150 µF
CAPC-7343
16 V
10 µF
V-3216
10 V
47 µF
CAP-AXP1000D400
100 V
D1
FAULT
LEDC-0603
D2
RUN
LEDC-0603
4
D3, D4, D9, D10
STPS2H100A
SMA
4
D5, D6, D11, D12
STPS0560Z
SOD123
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4
D7, D8, D13, D14
LL4148
SOD80-st
22
1
D15
BZV85-C51V
DO41
23
1
D16
STPS3L60U
SMB
24
1
J1
SWIM I/F
4PIN-P254
25
1
J2
DALI I/F
PIN2X6P254
26
1
J3
UART I/F - TTL
3PIN-P254
27
1
J4
UART I/F
JACK-3_535RASMT2BHNTRX
28
1
J5
CH2
MOR-2POLI-WAGO-250-402
29
1
J6
CH0
MOR-2POLI-WAGO-250-402
30
1
J7
CH3
MOR-2POLI-WAGO-250-402
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100 V
CAPC-0603
21
20
100 V
CAPC-0603
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DocID024374 Rev 2
51 V, 1.3 W
STEVAL385LED4CH
Bill of material
Table 2. STEVAL385LED4CH - bill of material (continued)
Item Qty.
Reference
Part value
Decal
Note
31
1
J8
CH1
MOR-2POLI-WAGO-250-402
32
1
J9
CONN-2POLI
MOR-2POLI-WAGO-236-402
33
1
J11
DIMMING 0-10 V
2PIN-P254
34
2
L1, L7
WE-CBF
CAPC-0603
35
4
L2, L3, L4, L5
470 H
DS5022P-Coilcraft
36
1
L6
8.5 H
ELL4GG-Panasonic
37
4
L8, L9, L10, L11
WE-CBF
CAPC-0603
38
1
P1
RESET
EVQPSM-Panasonic
39
1
P2
LED CH SEL
SMD-SWITCH-B3FS
40
1
P3
INC
SMD-SWITCH-B3FS
41
1
P4
DEC
SMD-SWITCH-B3FS
42
4
Q1, Q2, Q5, Q6
STN3NF06L
SOT223
43
4
Q3, Q4, Q7, Q8
2N7002
44
10
R1, R2, R3, R9, R77, R34, R35,R56,
R57, R68, R78
0
45
1
R4
46
1
R5
47
2
R6, R7
48
1
R8
49
1
R10
50
1
51
2
52
1
Ob
54
8
12
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SOT23
RESC-0603
RESC-0603
4.7 K
RESC-0603
1 K
RESC-0603
51.1 K
RESC-0603
3.3 K
RESC-0603
47 K
RESC-0603
R12, R73
100 K
RESC-0603
R13
27 K
RESC-0603
R14, R15, R16, R17, R32, R33, R54,
R55
Not mounted
RESC-0603
R18, R19, R24, R25, R40, R41,
26.1 K
RESC-0603
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R46, R47, R67, R69, R72, R75
55
4
R20, R21, R42, R43
10
RESC-0603
56
4
R22, R23, R44, R45
160
RESC-0603
57
8
R26, R27, R28, R29, R48, R49,
R50,R51
1.8
R2512
1 W 1%
58
4
R30, R31, R52, R53
Not mounted
RESC-0805
Not mounted
59
6
R36, R37, R58, R59, R70, R76
1.2 K
RESC-0603
60
4
R38, R39, R60, R61
5.1 K
RESC-0603
61
1
R62
10
R700DIAM100
62
1
R63
18 K
RESC-0805
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Bill of material
STEVAL385LED4CH
Table 2. STEVAL385LED4CH - bill of material (continued)
Item Qty.
Reference
Part value
Decal
63
2
R64, R66
10 K
RESC-0805
64
1
R65
2.7 K
RESC-0805
65
2
R71, R74
100 K
RESC-0603
66
1
U1
STMLUX38
TSSOP38
67
2
U2, U3
PM8834
SOI8
68
5
U4, U5, U6, U7, U10
LMV321ILT
SOT23-5L
69
1
U8
ST1S14
SO8-EP-9
70
1
U9
LK112M33TR
SOT23-5L
71
1
X1
16 MHz - N.M.
X32-3_2x2_5-MEC
Figure 5. STEVAL385LED4CH - layout (top layer)
Note
Not mounted
Not mounted
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DocID024374 Rev 2
STEVAL385LED4CH
3
Revision history
Revision history
Table 3. Document revision history
Date
Revision
04-Apr-2013
1
Initial release.
2
Updated Section : Description on page 1 (replaced
“MASTERLUX™” by “STLUX™”, added “This demonstration board
is available also with an order code STEVAL-ILL057V1.” sentence).
Updated Table 2: STEVAL385LED4CH - bill of material on page 6
(updated units, values, minor modifications).
Minor modifications throughout document.
29-May-2014
Changes
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STEVAL385LED4CH
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Please Read Carefully:
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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.
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