For further information contact your local STMicroelectronics sales office.
May 2014 DocID024374 Rev 2 1/10
STEVAL385LED4CH
200 W, digital 4-LED channels demonstration board with
STLUX385A-controlled current regulation and dimming
Data brief
Features
Based on the STLUX385A digital controller
Up to 200 W
4 LED channels
Adjustable LED current and dimming
Adaptive voltage compensation
Real-time fault detection and protection
(e.g: short or open circuit)
Serial interface
DALI (optional)
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).
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.
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.
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.
This demonstration board is available also with an
order code STEVAL-ILL057V1.
www.st.com
Board description STEVAL385LED4CH
2/10 DocID024374 Rev 2
1 Board description
Figure 1. Jumper and connector location
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.
$09
DocID024374 Rev 2 3/10
STEVAL385LED4CH Board description
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Board description STEVAL385LED4CH
4/10 DocID024374 Rev 2
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DocID024374 Rev 2 5/10
STEVAL385LED4CH Board description
10
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Bill of material STEVAL385LED4CH
6/10 DocID024374 Rev 2
2 Bill of material
Table 2. STEVAL385LED4CH - bill of material
Item Qty. Reference Part value Decal Note
1 2 C1, C4 1 µF CAPC-0603 10 V
2 4 C2, C8, C43, C45 10 nF CAPC-0603
38
C3, C19, C20, C31, C32, C40, C44,
C46 100 nF CAPC-0603
4 2 C5, C6 12 pF - N. M. CAPC-0603 Not mounted
5 1 C7 4.7 nF CAPC-0603
6 4 C9, C11, C21, C23 10 nF CAPC-1206 100 V
7 4 C10, C12, C22, C24 1 µF CAPC-1206 100 V
8 4 C13, C14, C25, C26 1 nF CAPC-0603
98 C15, C16, C17, C18, C27, C28,
C29, C30 10 nF CAPC-0603
10 6 C33, C38, C42, C47, C48, C49 100 nF CAPC-0603 25 V
11 2 C34, C37 100 nF CAPC-1206 100 V
12 1 C35 150 pF CAPC-0805 25 V
13 1 C36 22 µF D250P100 100 V
14 1 C39 150 µF CAPC-7343 16 V
15 1 C41 10 µF V-3216 10 V
16 1 C50 47 µF CAP-AXP1000D400 100 V
17 1 D1 FAULT LEDC-0603
18 1 D2 RUN LEDC-0603
19 4 D3, D4, D9, D10 STPS2H100A SMA
20 4 D5, D6, D11, D12 STPS0560Z SOD123
21 4 D7, D8, D13, D14 LL4148 SOD80-st
22 1 D15 BZV85-C51V DO41 51 V, 1.3 W
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_5-
35RASMT2BHNTRX
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
DocID024374 Rev 2 7/10
STEVAL385LED4CH Bill of material
10
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 1.2 A sat
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 SOT23
44 10 R1, R2, R3, R9, R77, R34, R35,R56,
R57, R68, R78 0 RESC-0603
45 1 R4 15 KRESC-0603
46 1 R5 4.7 KRESC-0603
47 2 R6, R7 1 KRESC-0603
48 1 R8 51.1 KRESC-0603
49 1 R10 3.3 KRESC-0603
50 1 R11 47 KRESC-0603
51 2 R12, R73 100 KRESC-0603
52 1 R13 27 KRESC-0603
53 8 R14, R15, R16, R17, R32, R33, R54,
R55 Not mounted RESC-0603 Not mounted
54 12 R18, R19, R24, R25, R40, R41, 26.1 KRESC-0603
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 KRESC-0603
60 4 R38, R39, R60, R61 5.1 KRESC-0603
61 1 R62 10 R700DIAM100 1 W
62 1 R63 18 KRESC-0805
Table 2. STEVAL385LED4CH - bill of material (continued)
Item Qty. Reference Part value Decal Note
Bill of material STEVAL385LED4CH
8/10 DocID024374 Rev 2
Figure 5. STEVAL385LED4CH - layout (top layer)
63 2 R64, R66 10 KRESC-0805
64 1 R65 2.7 KRESC-0805
65 2 R71, R74 100 KRESC-0603 Not mounted
66 1 U1 STMLUX38 TSSOP38
67 2 U2, U3 PM8834 SOI8
68 5 U4, U5, U6, U7, U10 LMV321ILT SOT23-5L Not mounted
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 Not mounted
Table 2. STEVAL385LED4CH - bill of material (continued)
Item Qty. Reference Part value Decal Note
AM13712V1
DocID024374 Rev 2 9/10
STEVAL385LED4CH Revision history
10
3 Revision history
Table 3. Document revision history
Date Revision Changes
04-Apr-2013 1Initial release.
29-May-2014 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.
STEVAL385LED4CH
10/10 DocID024374 Rev 2
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