ISL6522EVAL1 Intersil, ISL6522EVAL1 Datasheet - Page 12

• Manufacturer Part Number: ISL6522EVAL1
• Description: EVALUATION BOARD ISL6522
• Manufacturer: Intersil

Specifications of ISL6522EVAL1

• Main Purpose: DC/DC, Step Down
• Voltage - Input: 10.8 ~ 13.2V
• Regulator Topology: Buck
• Board Type: Fully Populated
• Utilized Ic / Part: ISL6522
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Output: -
• Voltage - Output: -
• Power - Output: -
• Frequency - Switching: -
• Outputs And Type: -

ISL6522 DC-DC Converter Application
Circuit
Figure 11 shows a DC-DC converter circuit for a
microprocessor application, originally designed to employ
the HIP6006 controller. Given the similarities between the
HIP6006 and ISL6522 controllers, the circuit can be
Component Selection Notes:
Q1, Q2 - Fairchild MOSFET; RFP25N05
C1-C3 - Three each 680µF 25W VDC, Sanyo MV-GX or equivalent.
C6-C9 - Four each 1000µF 6.3W VDC, Sanyo MV-GX or equivalent.
CR1 - 1N4148 or equivalent.
CR2 - 3A, 40V Schottky, Motorola MBR340 or equivalent.
L1 - Core: micrometals T50-52B; winding: ten turns of 17AWG.
ENABLE
12V
RTN
V
CC
IN
0.1µF
C13
3x 680µF
R2
1K
C1-3
R7
10K
R3
1K
SPARE
12
R1
SPARE
SS
RT
FB
C16
0.01µF
C15
6
3
1
5
1206
C12
1µF
REF
FIGURE 11. DC-DC CONVERTER APPLICATION CIRCUIT
33pF
C14
+
-
+
-
R4
SPARE
OSC
15K
R5
MONITOR AND
PROTECTION
ISL6522
U1
4
COMP
VCC
14
+
-
-
+
COMP
TP1
7
ISL6522
GND
10
13
12
11
2
9
8
OCSET
BOOT
UGATE
PHASE
PVCC
LGATE
PGND
implemented using the ISL6522 controller without any
modifications. Detailed information on the circuit, including a
complete bill of materials and circuit board description, can
be found in Application Note AN9722. See Intersil’s home
page on the web: http://www.intersil.com.
1000pF
JP1
3.01K
C19
Q1
R6
Q2
CR2
MBR
340
CR1
4148
0.1µF
C20
C17-18
2x 1µF
1206
PHASE
TP2
4x 1000µF
L1
C6-9
RTN
V
March 10, 2006
OUT
FN9030.8