ISL6232 Datasheet, PDF (12/25 Pages) Intersil Corporation – High Efficiency System Power Supply Controller for Notebook Computers

ISL6232
Typical Operating Performance
Typical Application Circuits
The typical application circuits shown in Figures 28 and
Figure 29 generate 5V/5A and 3.3V/5A for system power
supplies in a notebook computer.
VIN: 5.5V TO 25V
C13
0.1µF
OUT3
3.3V/5A
C10
10µF
Q3
IRF7807V
R2: 8mΩ,1% L2: 4.7µF
C11
220µF
12mW
4.0V
Q4
IRF7811AV
C9
0.1µF
VIN VCC LDO5
ISL6232
BOOT3
BOOT5
UGATE3
UGATE5
PHASE3
PHASE5
LGATE3
LGATE5
CS3
PGND
OUT3
CS5
GND
OUT5
C3 R3
270pF 390kΩ
FB3
COMP3
FB5
COMP5
SKIP#
REF
VCC
ON
OFF
EN3
SHDN#
PGOOD
EN5
LDO3
C4
0.1µF
5V ALWAYS ON
C1
10µF
C6
4.7µF
Q1
IRF7807V
L1: 6.8 µH
R1: 8mΩ,1%
OUT5
5V/5A
Q2
IRF7811AV
C2
180µF
12mW
6.3V
R5
C5
390kΩ 270pF
C7
0.22µF
VCC
R4
100kΩ
VCC
3.3V ALWAYS ON
C12
4.7µF
FIGURE 28. ISL6232 TYPICAL APPLICATION CIRCUIT WITH ACCURATE CURRENT SENSING
12
FN9116.1
April 20, 2009