7
AN1291
.0
Ma
y 17, 200
7
ISL6228EVAL3Z Evaluation Board Schematic
40.2K
IRF7821
DNP
0
DNP
0.1UF
APR 16, 2007
ISL6228EVAL3Z REV.B
JIA WEI
DNP
0.01UF
162K
590 2200PF
20K
22.1K
ON
2200PF
OFF
1.5
2K
2K
1.07K
1.07K
2.49K
2.49K
3.3UH
PLACE R12,R56 CLOSE TO L1
3.01
1.8
DNP
DNP
1.8
DNP
1.5
1.5
1.8
1.8
1.8
1.5
DNP
0.01UF
OFF
ROUTE PGND1 TO Q3,Q4 PADS
80.6K
PLACE R13, R55 CLOSE TO L2
330UF
ON
80.6K
5.76K
GND
590
53.6K
ON
DNP
0.1UF
5.76K
5.76K
5.76K
DNP
0
4.7UF
DNP
DNP
4.7UF
ROUTE PGND2 TO Q8,Q9 PADS
DNP
DNP
DNP
IRF7832
DNP
330UF
GND
DNP
DNP DNP
PGND
DNP
DNP
DNP
DNP
DNP
VIN2
DNP
OFF
0
DNP
DNP
0
IRF7821
3.3UH
ON
PGND
+5V
1 OF 1
+12V
OFF
PGND
VO2
VO1
IRF7832
VIN1
PGND
Q18
10UF
C13
1UF
C39
2N7002-7-F
C29
Q16
SUD50N03_07
TP13
R44
J10
FDS6990S
R26
R30
49.9K
U2
+12V
R38
0.1UF
10K
Q2
R42
R32
8
D3
FDS6990S
3
6
R34
1UF
Q1
C14
TP19
TP18
TP8
J14
R52
21
20
19
18
BAT54S
J4
C18
10UF
R55
R13
3
4
C40
Q15
5
TP5
FDS6990S
C37
C6
4
C11
1UF
13
0
C10
TP20
J13
L2
R57
J6
0
C21
C28
Q8
22
R49
R17
R3
Q14
Q3
12
2
3
4
C4
U1
R8
1UF
0.22UF
2N7002
R15
R54
0
R10
0
10K
TP21
TP17
R48
S5
R51
J11
J12
TP16
TP15
C19
1
8
4
3
5
2
R27
R31
R39
R37
R36
D6
R47
R46
S3
Q13
7
6
TP4
TP7
R25
R24
TP2
TP10
TP9
R20
R18
C5
R23
S1
D1
R1
R5
R7
Q12
R6
R2
D2
C1
C3
J9
J8
C9
C16
C12
C31
J2
J1
Q4
1
2
8
6
5
1
2
7
4
Q7
0
+5V
10K
22
10UF
10UF
+12V
1UF
49.9K
2N7002-7-F
+5V
10K
1UF
0
10UF
499
499
499
+5V
2
2
C2
2N7002
Q11
R9
R4
0.22UF
5
28
1
26
27
25
17
15
11
9
8
7
6
29
J3
5
J7
8
0.1UF
10UF
3
L1
R40
TP3
Q10
+12V
Q10
0.1UF
R21
14
FDS6990S
R56
R12
1UF
Q6
Q9
C8
Q5
1
D4
7
Q5
R60
J5
C30
1UF
R35
BAT54S
D5
SUD50N03_07
2
C24
C27
C23
C25
C22
C34
C32
C35
C33
TP11
TP12
TP14
10
ISL6228CRZ
S2
TP1
R16
24
R14
C26
C7
R53
R59
R29
R19
10K
R50
R41
R45
C41
R43
HIP2100
TP6
R22
R11
C38
2N7002
499
C36
0.22UF
6
HIP2100
U3
R58
7
R33
S4
C20
R28
C17
C15
0.22UF
16
23
HI
LO
HS
HO
LI
VSS
VDD
HB
HI
LO
HS
HO
LI
VSS
VDD
HB
EP
VIN2
VCC1
VIN1
PGOOD2
FSET2
VO2
FB2
EN2
OCSET2
PHASE2 UGATE2
BOOT2
PVCC2
LGATE2
PGND2
PGND1
LGATE1
PVCC1
BOOT1
UGATE1
PHASE1
EN1
OCSET1
VO1
FB1
PGOOD1
FSET1
VCC2
RED
GRN
RED
GRN
PAGE:
DATE:
TITLE:
ENGINEER:
A
A
B
B
C
C
D
D
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
FIGURE 12. ISL6228EVAL3Z SCHEMATIC
Application Note 1291
