Application Note 1634
6
AN
1634.
1
FIGURE 6. SCHEMATIC OF ISL97671A ISL97672A EVALUATION BOARD
A
B
C
D
D
C
B
A
Title
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Date:
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B
Drawn By:
Error : intersil.bmp file not found.
Terry Nguyen
09/2011
C2 0.1uF
/50V
C7
1uF/10V
L1
15uH(Coilcraft)
D1
PMEG6030
R2A
10K
R1
358K
C9
100pF/50V
C10
nc
C3
J98 (EN)
EN
J4 (SDA)
SDA / FLAG
J3 (SCL)
SCL
J1(Boost in)
Boost Vin
J9A
LX
R6
4.7k
R7
4.7k
J97 (I2C Vlogic)
Vlogic
C4
C5
C6
JP1
C1
10uF
/50V
LED5_1
LED5_2
LED5_3
LED5_4
LED5_5
LED5_6
LED5_7
LED5_8
LED5_9
LED
5_10
LED
5_11
LED
5_12
LED
5_13
LED4_1
LED4_2
LED4_3
LED4_4
LED
4_5
LED4_6
LED4_7
LED
4_8
LED4_9
LED
4_10
LED
4_11
LED
4_12
LED
4_13
LED3_1
LED3_2
LED3_3
LED3_4
LED
3_5
LED3_6
JP_CH5
JP_CH4
JP_CH3
JP_CH2
LED
3_7
LED3_8
LED3_9
LED
3_10
LED
3_11
LED
3_12
LED
3_13
LED2_1
JP_CH1
LED2_2
LED2_3
LED2_4
LED
2_5
LED2_6
LED
2_7
LED
2_8
LED2_9
JP_CH0
LED1_3
LED1_4
LED
1_5
LED1_6
LED1_7
LED
1_8
LED1_9
LED
1_10
LED
1_12
LED
1_13
LED0_1
LED0_2
LED0_3
LED0_4
LED
0_5
LED0_6
LED
2_10
LED
2_11
LED
2_12
LED
2_13
LED1_1
LED
1_11
LED0_7
LED1_2
LED
0_8
LED0_9
LED
0_10
LED
0_11
LED
0_12
LED
0_13
SH2_LED4
SH2_LED3
SH2_LED2
SH2_LED1
SH2_LED0
SH2_LED5
C1
4
1nF
C1
3
1nF
C1
2
1nF
C1
1
1nF
C1
5
1nF
C1
6
1nF
CH4
CH5
C3 ~ C6 : 4.7uF/50V X7R
ceramic caps
C4~C6 are reserved pads
CH0
CH1
CH2
CH3
J10(Vout)
Vout
JP_OUTPUT
SDA
SCL
J9(VDC)
VDC
For 2 layers
board, connect
top layer PGND
and bottom layer
AGND at one
point such that
using the
thermal pad as a
single
SH_LED13
SH_LED12
SH_LED11
SH_LED10
FAULT
1
VIN
2
EN
3
VDC
4
PWM
5
SMBDAT or SDA / FLAG
6
SMBCLK or SCL / NC
7
FPWM / FSW
8
AGND
9
CH0
10
CH1
11
CH2
12
CH3
13
CH4
14
CH5
15
OVP
16
RSET
17
CO
M
P
18
PGND
19
LX
20
PAD
C
U1
ISL97671A/72A
J81 (PWMI_direct)
PWMI
1
2
3
4
5
6
7
8
9
10
HDR1
INTERFACE
1
2
5
6
4
3
Q1
FDMA530PZ
1 2
WR
C18
nc
C19
0.1uF
J99( IC Vin)
IC Vin
IC
Vin=Bootstrap
IC Vin=
header
VDC
SCL_S
EN selection
IC VIN selection
SCL_IC
SDA_IC
SCL_IC
EN=IC Vin
(Right)
EN=J98 header
(Left)
SDA_IC
SDA_S
SCL_S
VDC
I2C / FLAG Vlogic selection
Vlogic=J97
header
Vlogic=VDC
(Right)
1
2
3
JP1A
1
2
3
JP2A
1
2
3
JP3A
1
2
3
JP5A
1
2
3
JP4A
JP91
JP92
VDC
ISET
R13
nc
R15
1M
R16
5K
R14
0
R9
nc
R11
750K
R12
2.21K
R10
0
C20
390pF
R2
10k
C8
3.3nF
ISL97671_2A EVAL SCHEMATIC
SH3-4
nc
SH2-3
nc
SH1-2
nc
SH5-6
nc
SH4-5 nc
SDA_S
SH1_LED4
SH1_LED3
SH1_LED2
SH1_LED1
SH1_LED0
SH1_LED5
