11
ISL6432 DC-DC Converter Application Circuit
Figure 8 shows an application circuit. For detailed information
on the circuit, including a Bill-of-Materials and circuit board
description, please refer to the Power Management Home
Gateway section on Intersils web page (www.intersil.com)
GND
VCC
+5V
PGND
LGATE
UGATE
OCSET
PHASE
FB
COMP
V
OUT2
FB2
DRIVE2
Q3
DRIVE3
FB3
DRIVE4
C2
V
OUT3
V
OUT4
C10
C9
ISL6432
Q4
L2
+
+
+
+
C4
C1
C6
C5
R1
V
OUT1
R6
C14
C3
1000?/SPAN>F
1000?/SPAN>F
C8
330?/SPAN>F
1?/SPAN>F
1?/SPAN>F
1000pF
2.5?/SPAN>H
10pF
22nF
1.50K
GND
(2.5V)
(1.8V)
(1.5V)
FB4
+3.3V
IN
R8
698
R7
45.3K
12K
Q5
U1
1
2
13
14
5
15
16
4
3
12
9
10
6
8
11
(2.5V)
FIGURE 8. POWER SUPPLY APPLICATION CIRCUIT FOR A MICROPROCESSOR COMPUTER SYSTEM
Q1,2
HUF76129D3S
+3.3V
FZT649
2SD1802
2SD1802
+
R3
R2
5.90K
12.7K
R5
R4
9.09K
7.15K
R10
R9
7.50K
8.45K
BOOT
7
C7
0.47?/SPAN>F
D1
MA732
ISL6432
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