ISL6432 Datasheet, PDF (11/12 Pages) Intersil Corporation – PWM and Triple Linear Power Controller for Home Gateway Applications

ISL6432
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 Intersil’s web page (www.intersil.com)
+5V
GND
+3.3V_IN
V_OUT2
Q3
FZT649
(2.5V)
C8 ⁺
330µF
+3.3V
V_OUT3
(1.8V)
Q4
2SD1802
+ _C10
1000µF
V_OUT4
(1.5V)
Q5
2SD1802
+ _C2
1000µF
C1 ⁺
R2
12.7K
DRIVE2
1
FB2
2
R3
5.90K
R4
9.09K
DRIVE3
15
FB3 ₁₆
R5
7.15K
R9
7.50K
DRIVE4
13
FB4
14
R10
8.45K
VCC
11
C4
1µF
C5
1000pF
R1
12
OCSET _12K
7
BOOT
C6
1µF
D1
MA732
8 ^UGATE
6
PHASE
U1
ISL6432
10 ^LGATE
PGND
9
C7
0.47µF
L2
Q1,2
HUF76129D3S
2.5µH
C9 ⁺
FB
3
COMP
4
C14
10pF
5
GND
C3
R7
22nF 45.3K
R6
1.50K
R8
698
V_OUT1
(2.5V)
FIGURE 8. POWER SUPPLY APPLICATION CIRCUIT FOR A MICROPROCESSOR COMPUTER SYSTEM
11