4
AN1459
.0
Jun
e
9, 200
9
Application Note 1459
ISL8107EVAL2Z Schematic
TGATE
BOOT
GND
PGND
SYNC
PGND
PVCC
SGND
FB
VBG
Vreg
ENSS
VIN
Vreg
RT/CT
PHASE
PGOOD
OCSET
VBIAS
VF
F
COMP
VOUT
PVCC
PGOOD
PVCC
P6
GND
P6
GND
1
R3
442
R3
442
C18
DNP
C18
DNP
1
2
R7
10
R7
10
C13
0.01uF
C13
0.01uF
1
2
C1
8.2nF
C1
8.2nF
1
2
C10
0.1uF
C10
0.1uF
1
2
SW1
SW1
TP2
TP2
R8
0
R8
0
J1
J1
1
2
3
R20
1k
R20
1k
Q2
DNP
Q2
DNP
R13
10K
R13
10K
C14
1uF
C14
1uF
1
2
R12
DNP
R12
DNP
P4
SYNC
P4
SYNC
1
P3
GND
P3
GND
1
D1
V10P10
D1
V10P10
R14
0
R14
0
C24
1uF
C24
1uF
1
2
C29
DNP
C29
DNP
1
2
C27
1000pF
C27
1000pF
1
2
D3
MMBD1204/SOT
D3
MMBD1204/SOT
C7
1uF
C7
1uF
1
2
C17
100uF
100V
C17
100uF
100V
1
2
C9
1uF
C9
1uF
1
2
R17
1k
R17
1k
R11
0
R11
0
C20
DNP
C20
DNP
1
2
D4
D4
2
1
C26
1uF
C26
1uF
1
2
C23
1uF
C23
1uF
1
2
R9
0
R9
0
Q3
BSS123LT1
Q3
BSS123LT1
2
1
3
Q1
HAT2175H
Q1
HAT2175H
C12
1uF
C12
1uF
1
2
C11
DNP
C11
DNP
1
2
C15
1uF
C15
1uF
1
2
R15
0
R15
0
P7
Vout
P7
Vout
1
C4
0.22uF
C4
0.22uF
1
2
L1
22uH
L1
22uH
1
2
P2
GND
P2
GND
1
P5
Vin
P5
Vin
1
R2
20k
R2
20k
C22
150uF
C22
150uF
1
2
C3
6.8nF
C3
6.8nF
1
2
R1
11.3k
R1
11.3k
R5
40.2k
R5
40.2k
R16
0
R16
0
C25
1uF
C25
1uF
1
2
TP1
TP1
C6
DNP
C6
DNP
1
2
C21
150uF
C21
150uF
1
2
TP3
TP3
C2
82pF
C2
82pF
1
2
D2
DNP
D2
DNP
C30
DNP
C30
DNP
1
2
P1
VBias
P1
VBias
1
C19
DNP
C19
DNP
1
2
C8
100pF
C8
100pF
1
2
P8
GND
P8
GND
1
TP4
TP4
C28
DNP
C28
DNP
1
2
R19
DNP
R19
DNP
C5
1000pF
C5
1000pF
1
2
C16
100uF
100V
C16
100uF
100V
1
2
R4
1.24k
R4
1.24k
U1
ISL8107
U1
ISL8107
VF
F
1
OCSET
2
SYNC
4
RTCT
5
TGATE
14
VBG
9
PGOOD
10
COMP
8
PGND
11
PHASE
13
BOOT
15
VBIAS
3
SGND
6
PVCC
16
FB
7
ENSS
12
EP
17
R10
0
R10
0
R6
3.16k
R6
3.16k
R18
10K
R18
10K
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