Application Note 1662
2
AN
16
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.0
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011
ISL97682IRTZEVALZ Evaluation Board Schematic
L1
15µH
D1
PMEG6030
1
3
2
SW1
1
3
2
SW2
R1
150k
R2
100k
When
SW1 = SW2 = 1: Fsw = 1.2MHz, WITH phase shift
SW1 = SW2 = 3: Fsw = 600kHz, WITH phase shift
SW1 = 1, SW2 = 3: Fsw = 1.2MHz, WITHOUT phase shift
SW1 = 3, SW2 = 1: Fsw = 600kHz, WITHOUT phase shift
C1
10µF/50V
C2
0.1µF/50V
P1
PVIN
C4
1µF/16V
P3
EN
P4
PWMI
VDC
C5
4.7µF/
C6
4.7µF/
C7
NC
C8
NC
LED1
LED25
LED2
LED26
LED3
LED27
LED4
LED28
LED5
LED29
LED6
LED30
LED7
LED31
LED8
LED32
LED9
LED33
LED10
LED34
LED11
LED35
LED12
LED36
JP2
I_OUT
JP3
JP5
R4
10k
R3
357k
C10
3.3nF/50V
C9
100pF/50V
JP7
JP9
JP11
JP12
C13
1nF/50V
C11
1nF/50V
R5 1M
R6
0
R7
Open
R8
5k
R9
10k
C15
8.2nF
C3
33pF
TP1
LX
TP2
VOUT
TP3
CH1
TP5
CH3
VD
C
P5
AGND
P6
AGND
P7
AGND
P8
AGND
P9
PGND
P10
PGND
2-layer board. Connect top layer PGND and bottom
layer AGND
F1
2A Fuse
JP14
R11
100k
R10
0
R13
Open
R12
27k
JP15
JP17
EN can be connected in the following ways to enable/disable
the device:
(1) Connected it to VIN directly on JP1 to enable
(2) Connected it to GND directly on JP1 to disable
(3) Directly apply external voltage on P3(EN) to enable/disable the
device without putting shunt on JP1.
JP2: For measuring total output current
JP3-JP6: For measuring current on CH1-CH4 respectively
JP7-JP10, JP13-JP16: For easy configuration of 8x LED or 10x LED per string
JP19
TP8
RSET
TP9
FSW/PHS
P2
VIN
VDC
1
3
2
JP1
1
3
2
JP20
VDC
NC 16
AGND
1
COMP
2
RS
ET
3
FS
W
4
PWMI
5
EN
6
VIN
7
FPWN/DPWM
8
LX
9
PG
N
D
10
VD
C
11
OV
P
12
CH1 13
NC 14
CH3 15
ISL97682
U2
U1
XAL6060-153MEB
50V
50V
