ISL6524A Intersil Corporation, ISL6524A Datasheet - Page 15

• Manufacturer Part Number: ISL6524A
• Description: VRM8.5 PWM and Triple Linear Power System Controller
• Manufacturer: Intersil Corporation

ISL6524A DC-DC Converter Application Circuit
Figure 14 shows an application circuit of a power supply for
a microprocessor computer system. The power supply
provides the microprocessor core voltage (V
bus voltage (V
memory controller hub voltage (V
V
POWER GOOD
+3.3V
V
GND
GND
GND
+12V
V
OUT2
OUT3
+1.5V
+1.2V
OUT4
+5V
+1.8V
VTT
(VTT)
(AGP)
(MCH)
HUF76107
OUT2
+
Q4
2SD1802
+
C17
560µF
HUF76107
), the AGP bus voltage (V
10kΩ
R10
C20
560µF
+
Q5
Q3
1000µF
C6
15
10µF
C14
OUT4
+
FAULT/RT
) from +3.3V, +5VDC,
DRIVE3
DRIVE4
DRIVE2
VSEN3
VSEN4
VTTPG
VSEN2
VAUX
FIX
OUT1
OUT3
1µF
16
15
14
2
1
11
10
9
18
19
C2
ISL6524A
), the GTL
), and the
1µH
L1
U1
28
17
VCC
GND
FIGURE 14.
23
27
26
25
22
20
24
12
21
13
8
7
6
5
4
3
0.1µF
OCSET1
VID25
+
PGOOD
UGATE1
COMP1
VID0
VID1
VID2
VID3
PHASE1
LGATE1
PGND
VSEN1
FB1
SS24
SS13
C21
and +12VDC. For detailed information on the circuit,
including a Bill-of-Materials and circuit board description, see
Application Note AN9925. Also see the Intersil web site at
www.intersil.com
680µF
C1
1nF
C4
1.5kΩ
2.2nF
C15
R2
270pF
C12
0.1µF
C18
43kΩ
HUF76143
HUF76139
Q2
R14
Q1
3.32kΩ
4.99kΩ
R11
R7
10kΩ
R3
22nF
C13
C3
267kΩ
1µF
R15
1.8µH
R13
33Ω
L2
POWER GOOD
+
3x1000µF
0.30µF
C7-9
12.1k
C11
R12
(1.050V to 1.825V)
V
OUT1
(CORE)