ISL6524EVAL1 Intersil, ISL6524EVAL1 Datasheet - Page 15

• Manufacturer Part Number: ISL6524EVAL1
• Description: EVALUATION BOARD VRM8.5 ISL6524
• Manufacturer: Intersil

Specifications of ISL6524EVAL1

• Main Purpose: Special Purpose DC/DC, VRM Supply
• Outputs And Type: 4, Non-Isolated
• Voltage - Output: 1.05 ~ 1.825V, 1.2V, 1.5V, 1.8V
• Current - Output: 14A, 1A, 1A, 1A
• Voltage - Input: 3.3V, 5V, 12V
• Regulator Topology: Buck
• Frequency - Switching: 200kHz
• Board Type: Fully Populated
• Utilized Ic / Part: ISL6524
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

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
V
POWER GOOD
+3.3V
V
GND
GND
GND
+12V
V
OUT2
OUT3
+1.2V
+1.5V
+5V
OUT4
+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
+
FAULT/RT
DRIVE3
DRIVE4
DRIVE2
VSEN3
VSEN4
VTTPG
VSEN2
VAUX
FIX
FIGURE 14. TYPICAL APPLICATION CIRCUIT
OUT1
OUT3
16
1µF
1
9
19
15
14
2
11
10
18
C2
), the GTL
), and the
1µH
L1
ISL6524
U1
28
17
VCC
GND
27
26
25
20
23
24
22
12
21
13
8
7
6
5
4
3
OCSET1
0.1µF
VID25
+
PGOOD
UGATE1
PHASE1
LGATE1
VSEN1
FB1
COMP1
VID0
VID1
VID2
VID3
SS24
PGND
SS13
C21
memory controller hub voltage (V
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.
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
267kΩ
C3
1µF
R15
1.8µH
R13
33Ω
L2
OUT4
POWER GOOD
+
) from +3.3V, +5VDC,
3x1000µF
0.30µF
C7-9
12.1k
C11
R12
(1.050V to 1.825V)
V
OUT1
April 18, 2005
(CORE)
FN9015.3