isl62391 Intersil Corporation, isl62391 Datasheet - Page 6

• Manufacturer Part Number: isl62391
• Description: High-efficiency, Triple-output System Power Supply Controller For Notebook Computers
• Manufacturer: Intersil Corporation

Typical Application Circuits
The typical application circuits generate the 5V/8A and 3.3V/8A (system regulator), or 1.05V/15A and 1.5V/15A (chip set) supplies
in a notebook computer. The input supply (VBAT) range is 5.5V to 25V.
1200pF
1200pF
750
330µF
750
330µF
3 .3 V
3 .3 V
45.3k
10k
V B A T
45.3k
10k
FIGURE 1. TYPICAL SYSTEM REGULATOR APPLICATION CIRCUIT WITH INDUCTOR DCR CURRENT SENSE
V B A T
4x10µF
4x10µF
4.7µF
3 .3 V
FIGURE 2. TYPICAL SYSTEM REGULATOR APPLICATION CIRCUIT WITH RESISTOR SENSE
0.001
1k
0.022µF
4.7µH
14k
0.22µF
1µF
1µF
6
4.7µH
0.22µF
1k
14k
IRF7821
IRF7832
1µF
4.7µF
1µF
IRF7832
IRF7821
B O O T 1
U G A T E 1
P H A S E 1
L G A T E 1
O C S E T 1
IS E N 1
V O U T 1
F B 1
L D O 3
P V C C
V C C
P G N D
ISL62391, ISL62392
B O O T 1
U G A T E 1
P H A S E 1
L G A T E 1
O C S E T 1
IS E N 1
V O U T 1
F B 1
L D O 3
P V C C
V C C
P G N D
ISL62391, ISL62392
ISL62391, ISL62392
G N D
V IN
P A D
V IN
U G A T E 2
L D O 3 E N
P H A S E 2
O C S E T 2
L G A T E 2
P G O O D
U G A T E 2
P H A S E 2
O C S E T 2
L D O 3 E N
L G A T E 2
B O O T 2
P G O O D
V O U T 2
F S E T 1
F S E T 2
B O O T 2
V O U T 2
IS E N 2
F C C M
F S E T 1
F S E T 2
IS E N 2
F C C M
E N 1
E N 2
F B 2
E N 1
E N 2
F B 2
19.6k
19.6k
IRF7821
IRF7832
100k
100k
IRF7821
IRF7832
0.01µF
0.01µF
0.22µF
14k 0.022µF
4.7µH
24.3k
24.3k
1k
0.22µF
4.7µH
14k
P V C C
P V C C
0.001
1k
0.01µF
0.01µF
68.1k
68.1k
9.09k
9.09k
December 22, 2008
5 V
5 V
330µF
330µF
1200pF
1200pF
750
750
FN6666.4