ISL8225MIRZ-T Intersil, ISL8225MIRZ-T Datasheet - Page 13

• Manufacturer Part Number: ISL8225MIRZ-T
• Description: ISL8225M Series 20 Vin 1.5 Mhz Dual 15 A Single 30 A Step-Down Power Module
• Manufacturer: Intersil

Typical Application Circuits
*SET THE CLKOUT VOLTAGE CLOSE TO 0.61V.
*SEE FIGURE 31, “R
FREQUENCY,” ON PAGE 22 TO SELECT R7 FOR THE
DESIRED FREQUENCY OPERATION.
SEE DETAILS IN “FUNCTIONAL DESCRIPTION” ON PAGE 20
*SEE TABLE 1 ON PAGE 17 FOR
R5/R6 VALUES.
VIN
VIN
330µF
CIN1
330µF
CIN1
4.5V TO 20V
8V TO 20V
SYNC
+
+
4x22µF
VS SWITCHING
4x22µF
2.05kΩ
CIN2
CIN2
FIGURE 21. HIGH OUTPUT VOLTAGE APPLICATION WITH THE FREQUENCY SET AT 900kHz
R6*
R6
324Ω
13
1kΩ
R7
R8
VDDQ
7.15kΩ
4.7µF
4.7µF
88.7kΩ
C1
C1
R5*
1nF
R5
C2
R7
14
15
16
17
19
20
14
15
16
17
19
20
8
7
3
5
2
8
7
3
5
2
VIN1
VIN2
EN/FF1
EN/FF2
VCC
CLKOUT
MODE
ISHARE
SYNC
COMP1
COMP2
VIN1
VIN2
EN/FF1
EN/FF2
VCC
CLKOUT
MODE
ISHARE
SYNC
COMP1
COMP2
FIGURE 20. DDR/TRACKING USE
(Continued)
ISL8225M
6
6
ISL8225M
ISL8225M
9
9
PHASE1
PHASE2
PHASE1
PHASE2
VSEN1+
VSEN2+
VSEN1+
VSEN2+
PGOOD
PGOOD
VSEN1-
VSEN2-
VSEN1-
VSEN2-
VMON1
VMON2
VMON1
VMON2
VOUT1
VOUT2
VOUT1
VOUT2
23
22
21
25
26
1
18
4
12
10
24
23
22
21
25
26
1
18
4
12
10
24
*SEE FIGURE 25, “RECOMMENDED
FREQUENCY VS VIN AT VOUT,” ON
PAGE 19 FOR THE FREQUENCY SETTING
FOR I/O CONDITIONS.
R2
316Ω
R4
931Ω
R2
221Ω
R4
137Ω
1kΩ
1kΩ
1kΩ
1kΩ
1kΩ
1kΩ
R1
R3
R1
R1
R3
R3
COUT1
3x100µF
COUT2
3x100µF
COUT1
3x100µF
COUT2
3x100µF
3.3V@10A
5V@10A
2.5V
1.25V VDDQ/2
December 3, 2012
VOUT1
VOUT2
VDDQ
VTT
FN7822.0