ISL8225M
Typical Application Circuits
4.5V TO 20V
14
1.2V@15A
VOUT1
23
22
21
25
26
1
VIN
VIN1
VOUT1
CFF
+
(OPTIONAL)
+
CIN1
330µF
CIN2
4x22µF
COUT2
330µF
8
15
16
7
VIN2
VSEN1+
VSEN1-
VOUT2
VSEN2+
VSEN2-
VMON1
R2*
1kΩ
COUT1
2x47µF
R1*
1kΩ
EN/FF1
EN/FF2
VCC
R5*
1.5V@15A
VOUT2
CFF
(OPTIONAL)
+
COUT4
330µF
COUT3
2x47µF
R4*
665Ω
R3*
1kΩ
R6*
17
3
CLKOUT
MODE
ISHARE
SYNC
C1
4.7µF
ISL8225M
18
4
*SEE TABLE 4 ON PAGE 19, RESISTORS
SET ON VSEN+ AND VSEN- PINS.
19
5
*SEE TABLE 1 ON PAGE 17 FOR R5/R6
VALUES.
VMON2
12
10
24
PHASE1
20
2
COMP1
COMP2
PHASE2
PGOOD
6
9
SEE “LAYOUT GUIDE” ON PAGE 23 FOR SHORTING SGND TO PGND
FIGURE 18. DUAL OUTPUTS FOR 1.2V/15A AND 1.5V/15A
4.5V TO 20V
+
1.5V@30A
14
8
23
22
21
25
26
1
VIN
VOUT
VIN1
VOUT1
VSEN1+
VSEN1-
VOUT2
R1
CIN1
330µF
CIN2
VIN2
4x22µF
1kΩ
COUT
5x100µF
R2
LOAD
665Ω
15
16
7
EN/FF1
EN/FF2
VCC
R3*
KELVIN REMOTE SENSING LINES
VSEN2+
VSEN2-
VMON1
VMON2
PHASE1
PHASE2
PGOOD
VCC
17
3
R4*
CLKOUT
MODE
ISHARE
SYNC
ISL8225M
C1
4.7µF
18
4
19
5
*SEE TABLE 1 ON PAGE 17 FOR R3/R4
VALUES.
2200pF
2Ω
12
SIZE:1210
2Ω
20
2
10
24
COMP1
COMP2
SIZE:1210
2200pF
C2
OPTIONAL SNUBBER FOR NOISE
ATTENUATION. SEE FIGURE 32,
470pF
6
9
“RECOMMENDED LAYOUT,” ON PAGE 23.
SEE “LAYOUT GUIDE” ON PAGE 23 FOR SHORTING SGND TO PGND
FIGURE 19. PARALLEL USE FOR SINGLE 1.5V/30A OUTPUT
FN7822.1
January 31, 2013
12
INTERSIL [ Intersil ]
