ISL6524 Intersil Corporation, ISL6524 Datasheet - Page 15

• Manufacturer Part Number: ISL6524
• Description: VRM8.5 PWM and Triple Linear Power System Controller
• Manufacturer: Intersil Corporation

ISL6524 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
+1.2V
+1.5V
OUT4
+5V
+1.8V
VTT
(VTT)
(AGP)
(MCH)
HUF76107
OUT2
+
Q4
2SD1802
+
C17
560 F
HUF76107
), the AGP bus voltage (V
10k
R10
C20
560 F
+
Q5
Q3
1000 F
C6
15
10 F
C14
OUT4
+
FAULT/RT
) from +3.3V, +5VDC,
DRIVE3
DRIVE4
DRIVE2
VSEN3
VSEN4
VTTPG
VSEN2
VAUX
FIX
FIGURE 14. TYPICAL APPLICATION CIRCUIT
OUT1
OUT3
16
1 F
1
11
10
9
18
19
15
14
2
C2
), the GTL
), and the
1 H
L1
ISL6524
U1
28
17
VCC
GND
ISL6524
23
27
26
25
22
20
12
24
21
13
7
8
6
5
4
3
OCSET1
0.1 F
+
VID25
PGOOD
UGATE1
PHASE1
LGATE1
VSEN1
FB1
COMP1
VID0
VID1
VID2
VID3
SS24
PGND
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 Intersil web page
(www.intersil.com), for the latest information.
680 F
C1
1nF
C4
1.5k
2.2nF
C15
R2
270pF
C12
0.1 F
C18
43k
HUF76143
HUF76139
Q2
R14
Q1
3.32k
4.99k
R11
R7
10k
R3
22nF
C13
C3
1 F
267k
R15
1.8 H
R13
33
L2
POWER GOOD
+
3x1000 F
0.30 F
C7-9
12.1k
C11
R12
(1.050V to 1.825V)
V
OUT1
(CORE)