Download is32bl3556 wide input voltage range, high

IS32BL3556 WIDE INPUT VOLTAGE RANGE, HIGH EFFICIENCY
FAULT TOLERANT LED DRIVER
DESCRIPTION
RECOMMENDED EQUIPMENT
The IS32BL3556 is a white LED driver for backlight
applications based on a highly efficient boost controller
operating over a wide input voltage range of 4.75V to
40V. The boost converter can drive up to 48 LED, 12
LED per string, at 120mA. The LED sinks can be
paralleled together to achieve even higher LED
currents, up to 480mA.
The IS32BL3556 is available in a thermally enhanced
eTSSOP-20 package. It is lead (Pb) free, with 100%
matte tin lead frame plating.
•
FEATURES
The IS32BL3556 evaluation board is fully assembled
and tested. Follow the steps listed below to verify
board operation.
•
•
•
•
•
Input voltage range is 4.75V to 40V for start/stop,
cold crank and load dump requirements
Excellent input voltage transient response
Sync function to synchronize boost converter
switching frequency up to 2.3MHz, allowing
operation above the AM band
Single resistor primary OVP minimizes VOUT
leakage
AEC-Q100 qualified (pending)
12V 3A DC power supply
ABSOLUTE MAXIMUM RATINGS
•
≤ 40 power supply
Caution: Do not exceed the conditions listed above, otherwise
the board will be damaged.
PROCEDURE
Caution: Do not turn on the power supply until all connections
are completed.
1)
2)
3)
4)
Short J2 to connect EN/PWM and 5V.
Connect output (default: 6 led series and 4
parallel).
Turn on the power supply (default: VIN =12v).
Revolve the potentiometer RP2 you can change
FSW from 1.54MHz to 504KHz. (default：1.54MHz).
5)
QUICK START
Figure 1: Photo of IS32BL3556 Evaluation Board
Revolve the potentiometer RP1 you can set LED
current from 100mA to 33mA (default：100mA per
channel).
6) If you want to adjust the LED current by PWM,
you should remove J2 first, and then apply a
PWM single to the EN/PWM pin.
Typical PWM dimming frequencies fall between
200Hz and 1KHz, VH=5V.
7) For adjusting the output current, you can apply a
signal frequency to APWM pin.
The frequency range from 20kHz to 1MHz, the
APWM signal to have duty cycles that are
between 0% and 75%.
8) For using synchronize function, an external clock
can apply to the SYNC pin. The external
frequency fall between 580 kHz and 2.3 MHz.
9) Any fault condition will turn on D2 LED.
10) Short JP4 can disable the input switch MOS
protection (short Q2).
ORDERING INFORMATION
Part No.
Temperature Range
Package
IS32BL3556-ZLA3-EB
-40°C to +125°C (Industrial)
eTSSOP-20,Lead-free
Table 1: Ordering Information
For pricing, delivery, and ordering information, please contacts ISSI’s analog marketing team at
[email protected] or (408) 969-6600.
Integrated Silicon Solution, Inc. – www.issi.com
Rev. B, 09/13/2016
1
IS32BL3556 WIDE INPUT VOLTAGE RANGE, HIGH EFFICIENCY
FAULT TOLERANT LED DRIVER
2
1
R4 0.1R
C2
2
1
C3
10uF/63V
J1
R7
100R
R12
20R
R6
C4
22nF
Drain
Q2
MOSFET_P
U1
R5 0.1R
1uF
GATE 1
100R
SENSE 2
GND
C1 1uF
5V
GND
GATE
VIN
3
C5 0.33uF
VCC 15
GND
R9 100K
VCC
FAULTB
EN/PWM
HOLD
J7
1
2
SW
R14
100K
C9
Output
C10
10uF/63V
1uF
OVP
19
R16(C7)
OVP
51K
SENSE
VIN
VCC
D1 5.1V
HOLD
SS36
GND
R1
10K
FAULT
D3
L1
20
Input DC Voltage
Source
LED+
J4
SW
R3 0.1R
R2
4.7K
J2
D2
EN/PWM
J3
FAULTB 4
EN/PWM 7
2
1
5V
2
1
5V
LED1
IS32BL3556
14
LED1
J5
1
2
LED2
13
6
ISET
9
J8
1
2
3
4
5
FAULTB
LED3
12
LED3
1
2
APWM
LED4
ISET
COMP
Output
LED1
LED2
LED3
LED4
J6
EN/PWM
R10 100K
APWM
LED1
LED2
LED2
11
LED3
LED4
LED4
R11 100K
5
COMP
APWM
HOLD
APWM
SYNC
HOLD
R8
10K
Q1
MMBT3906
Frequency
R13
10K
RP1
1
Frequency
0
2
3
RP 4
8
10
FR/SYNC
AGND
GND
PGND
21
C6
16,17,18
R15
150R
120pF
RP2
1
0
2
3
RP 4
C8
470nF
GND
Figure 2: IS32FL3556 Application Schematic
Integrated Silicon Solution, Inc. – www.issi.com
Rev. B, 09/13/2016
2
IS32BL3556 WIDE INPUT VOLTAGE RANGE, HIGH EFFICIENCY
FAULT TOLERANT LED DRIVER
BILL OF MATERIALS
Name
Symbol
Description
Qty
Supplier
Part No.
LED Driver
U1
Reduced voltage
1
ISSI
IS32BL3556
Diode
D1
Zener, 5.1V, 1W, SMD
1
ST
ZM4733A
Diode
D2
Red LED, SMD
1
Everlight
9-217/BHC-ZL1M2RY/3T
Diode
D3
SCHOTTKY, 3A, 60V
1
MDD
MDD SS36
PFET
Q2
60V/12A, P-Channel MOS
1
ONsemi
NTD2955-1G
BJT
Q1
PNP, IC=100mA, ICM=200mA,
IBM=100mA, SOT-23
1
Philips
MMBT3906
Inductor
L1
10uH±20%, IR=7.1A
1
Potentiometer
RP1, RP2
20K±20%, 0.5W
Resistor
R3, R4,
R5
Resistor
2
Wurth
Electronic
Bourns
3386P-1-203
RES, 0.1R, 1/4W, ±1%, SMD
3
Yageo
RC1206FR-070R1L
R12
RES, 20R, 1/8W, ±5%, SMD
1
Yageo
RC0805JR-0720RL
Resistor
R6, R7
RES, 100R, 1/8W, ±5%, SMD
2
Yageo
RC0805JR-07100RL
Resistor
R15
RES, 150R, 1/8W, ±5%, SMD
1
Yageo
RC0805JR-07150RL
Resistor
R2
R1, R8,
R13
RES, 4.7K, 1/8W, ±5%, SMD
1
Yageo
RC0805JR-074K7RL
RES, 10k, 1/8W, ±5%, SMD
3
Yageo
RC0805JR-0710KL
Resistor
7447709100
Resistor
R9, R10,
R11, R14
RES, 100k, 1/8W, ±5%, SMD
4
Yageo
RC0805JR-07100KL
Resistor
R16(C7)
RES, 51k, 1/8W, ±5%, SMD
1
Yageo
RC0805JR-0751KL
Capacitor
C4
CAP, 22nF, 50V, ±10%, SMD
1
Yageo
CC0805KKX7R9BB223
Capacitor
C5
CAP, 330nF, 50V, ±10%, SMD
1
Yageo
CC0805KKX7R9BB334
Capacitor
C6
CAP, 120pF, 50V, ±10%, SMD
1
Yageo
CC0805KKX7R9BB121
Capacitor
C8
C1, C3,
C10
C2, C9
CAP, 470nF, 50V, ±10%, SMD
1
Yageo
CC0805KKX7R9BB474
CAP, 1uF, 50V, ±10%, SMD
3
Yageo
CC0805KKX7R9BB106
CAP, 10uF, 63V, ±20%, SMD
2
Panasonic
EEE-1HA100WR
Capacitor
E-Cap
Bill of Materials, refer to Figure 2 above.
Integrated Silicon Solution, Inc. – www.issi.com
Rev. B, 09/13/2016
3
IS32BL3556 WIDE INPUT VOLTAGE RANGE, HIGH EFFICIENCY
FAULT TOLERANT LED DRIVER
80
80
1
2
15
16
17
18
19
20
26
25
24
23
22
21
27
28
29
30
31
32
1
38
37
36
35
34
33
39
40
41
42
43
44
51
50
49
48
47
46
2
1
3
2
69
68
67
64
65
66
52
53
54
55
58
59
56
61
60
57
62
63
70
71
72
75
74
73
76
77
78
2
2
3
1
4
0
25
26
2
27
4
1
1
5
2
5
6
2
1
2
1
4
4
3
3
3
3
1
4
4
0
1
1
1
0
2
1
1
2
2
1
80
80
Figure 3: Board Component Placement Guide - Top Layer
Figure 4: Board PCB Layout - Top Layer
Integrated Silicon Solution, Inc. – www.issi.com
Rev. B, 09/13/2016
4
IS32BL3556 WIDE INPUT VOLTAGE RANGE, HIGH EFFICIENCY
FAULT TOLERANT LED DRIVER
80
80
1
2
15
16
17
18
19
20
26
25
24
23
22
21
27
28
29
30
31
32
1
38
37
36
35
34
33
39
40
41
42
43
44
51
50
49
48
47
46
2
1
3
2
69
68
67
64
65
66
52
53
54
55
58
59
56
61
60
57
62
63
70
71
72
75
74
73
76
77
78
2
2
3
1
4
0
25
26
2
27
4
1
1
5
2
5
6
2
1
2
1
4
4
3
3
3
3
1
4
4
0
1
1
1
0
2
1
1
2
2
1
80
80
Figure 5: Board Component Placement Guide - Bottom Layer
Figure 6: Board PCB Layout - Bottom Layer
Copyright © 2016 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any
time without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are
advised to obtain the latest version of this device specification before relying on any published information and before placing orders for products.
Integrated Silicon Solution, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the
product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not
authorized for use in such applications unless Integrated Silicon Solution, Inc. receives written assurance to its satisfaction, that:
a.) the risk of injury or damage has been minimized;
b.) the user assume all such risks; and
c.) potential liability of Integrated Silicon Solution, Inc is adequately protected under the circumstances
Integrated Silicon Solution, Inc. – www.issi.com
Rev. B, 09/13/2016
5
IS32BL3556 WIDE INPUT VOLTAGE RANGE, HIGH EFFICIENCY
FAULT TOLERANT LED DRIVER
REVISION HISTORY
Revision
Detail Information
Date
A
Initial release
2016.08.22
B
Change R14,R16, change C5 to 0.33uF
2016.09.13
Integrated Silicon Solution, Inc. – www.issi.com
Rev. B, 09/13/2016
6