ISL6523EVAL1 Intersil, ISL6523EVAL1 Datasheet - Page 15

• Manufacturer Part Number: ISL6523EVAL1
• Description: EVALUATION BOARD VRM8.5 ISL6523
• Manufacturer: Intersil

Specifications of ISL6523EVAL1

• 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, 4A, 1A, 1A
• Voltage - Input: 3.3V, 5V, 12V
• Regulator Topology: Buck
• Frequency - Switching: 200kHz
• Board Type: Fully Populated
• Utilized Ic / Part: ISL6523
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

ISL6523 DC-DC Converter Application
Circuit
Figure 13 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
POWER GOOD
V
OUT2
V
V
+1.2V
OUT4
OUT3
VTT
+1.5V
+1.8V
+3.3V
+12V
GND
GND
GND
(VTT)
+5V
10kΩ
(MCH)
(AGP)
R7
OUT2
HUF76107
+
+
), the GTL bus voltage (V
+
Q4
560µF
C18
2SD1802
1000µF
C7
HUF76121
2.0µH
C21
560µF
L2
Q5
Q3
15
10µF
HSM835
CR1
C15
2.2kΩ
R2
1nF
C3
+
PHASE2
OCSET2
UGATE2
DRIVE3
DRIVE4
VSEN3
VSEN4
VSEN2
VTTPG
OUT1
VAUX
OUT3
), the AGP
), and the
1µF
16
15
14
10
1
2
11
9
18
19
C2
ISL6523
1µH
L1
U1
28
17
ISL6523
FIGURE 13.
VCC
GND
27
26
20
23
25
24
22
12
21
13
8
7
6
5
3
4
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 the Intersil web page
(www.intersil.com) for the latest information.
OCSET1
0.1µF
VID25
+
PGOOD
UGATE1
VSEN1
COMP1
VID0
VID1
VID2
VID3
SS24
PHASE1
LGATE1
PGND
FB1
SS13
C22
680µF
C1
1nF
C4
1.5kΩ
2.2nF
C16
270pF
R3
C13
C19
0.1µF
43kΩ
HUF76143
HUF76139
Q2
R11
Q1
3.32kΩ
R8
10kΩ
R1
22nF
C14
4.99kΩ
R5
C5
1µF
267kΩ
1.8µH
R12
L3
OUT4
R10
33Ω
POWER GOOD
+
) from +3.3V, +5VDC,
3x1000µF
C8-10
0.30µF
12.1k
+1.050V TO 1.825V
C12
R9
V
OUT1
(CORE)