ISL62391_11 Datasheet, PDF (7/20 Pages) Intersil Corporation – High-Efficiency, Triple-Output System Power Supply Controller

ISL62391, ISL62392, ISL62391C, ISL62392C
Typical Application Circuits (Continued)
VBAT
4x10µF
1 .0 5 V
0.22µF
2.2µH
IRF7821
2x
2x330µF
590
36.5k
1800pF
0.022µF 14k
IRF7832
14k
2x
B O O T1
V IN
UGATE1
PHASE1
LGATE1
OCSET1
IS E N 1
VOUT1
BOOT2
UGATE2
PHASE2
LGATE2
OCSET2
IS E N 2
VOUT2
IRF7821
2x
0.22µF
2.2µH
14k
2x
IRF7832
0.022µF
14k
1 .5 V
2x330µF
590
36.5k _1800pF
48.7k
4.7µF
1µF
1µF
FB1
FB2
ISL62391, ISL62392
ISL62391C, ISL62392C
LDO3
PVCC
VCC
PGND
PAD
PGOOD
EN1
EN2
LD O 3EN
FCCM
FSET1
FSET2
14k
100k
17.4k
0.01µF
24.3k
PVCC
0.01µF
FIGURE 3. TYPICAL CHIP SET APPLICATION CIRCUIT WITH INDUCTOR DCR CURRENT SENSE
VBAT
4x10µF
1 .0 5 V
2x330µF
0.001
1k
BOOT1
V IN
0.22µF
IRF7821
2.2µH
2x
UGATE1
PHASE1
1k
IRF7832
2x
LGATE1
BOOT2
IRF7821
UGATE2
2x
PHASE2
IRF7832
LGATE2
2x
0.22µF
2.2µH
1k
0.001
1k
1 .5 V
2x330µF
590
1800pF ^36.5k
48.7k
3.3 V
4.7µF
1µF
1µF
OCSET1
IS E N 1
VOUT1
OCSET2
IS E N 2
VOUT2
590
36.5k _1800pF
FB1
FB2
ISL62391, ISL62392
ISL62391C, ISL62392C
PGOOD
100k
LDO3
PVCC
VCC
PGND
GND
EN1
EN2
LD O 3EN
FCCM
FSET1
FSET2
14k
17.4k
0.01µF
PVCC
24.3k
0.01µF
FIGURE 4. TYPICAL CHIP SET APPLICATION CIRCUIT WITH RESISTOR SENSE
7
FN6666.5
April 7, 2011