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ISL6228 Datasheet, PDF (14/16 Pages) Intersil Corporation – High-Performance Dual-Output Buck Controller for Notebook Applications
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ISL6228
Typical Performance
100
VIN = 8V
95
90
85
VIN = 12V
80
VIN = 19V
75
70
65
60
0
1
2
3
4
5
6
7
8
IOUT (A)
FIGURE 9. CHANNEL 1 EFFICIENCY AT VO = 1.5V
100
VIN = 8V
95
90
85
VIN = 12V
80
VIN = 19V
75
70
65
60
0
1
2
3
4
5
6
7
8
IOUT (A)
FIGURE 10. CHANNEL 2 EFFICIENCY AT VO = 1.8V
VO1
FB1
PGOOD1
PHASE1
VO1
FB1
PGOOD1
PHASE1
FIGURE 11. START-UP, VIN = 12V, LOAD = 0.25Ω, VO = 1.05V
VO1
PHASE1
VO2
PHASE2
FIGURE 13. CCM STEADY-STATE OPERATION,VIN = 12V,
VO1 = 1.5V, IO1 = 3A, VO2 = 1.8A, IO2 = 4A
FIGURE 12. SHUT-DOWN, VIN = 12V, IO = 10A, VO = 1.05V
VO1
PHASE1
VO2
PHASE2
FIGURE 14. DCM STEADY-STATE OPERATION,VIN = 12V,
VO1 = 1.5V, IO1 = 1A, VO2 = 1.8V, IO2 = 1A
14
FN9095.2
May 7, 2008
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