ISL62872 Intersil Corporation, ISL62872 Datasheet - Page 21

• Manufacturer Part Number: ISL62872
• Description: PWM DC/DC Controller
• Manufacturer: Intersil Corporation

Typical Performance Curves
FIGURE 22. START-UP INTO 750mV PRE-BIASED OUTPUT,
FIGURE 20. SWITCHING FREQUENCY AT V
-0.2
-0.4
-0.6
-0.8
-1.0
100
1.0
0.8
0.6
0.4
0.2
0.0
95
90
85
80
75
70
65
60
55
50
0
0
FIGURE 18. EFFICIENCY AT V
2
2
V
EN
IN
= 12.6V, V
4
4
V
V
IN
IN
= 19V
= 12.6V
6
6
OUT
8
SREF
8
V
21
OUT
I
I
OUT
OUT
= 1.05V, LOAD = 10A
10
10
(A)
(A)
12
12
V
V
OUT
IN
IN
= 12.6V
14
= 8V
14
V
V
= 1.1V
IN
IN
OUT
= 8V
= 19V
16
16
= 1.1V
ISL62871, ISL62872
18
18
PGOOD
20
20
FIGURE 21. START-UP, V
FIGURE 23. SHUT-DOWN, V
-0.2
-0.4
-0.6
-0.8
-1.0
1.0
0.8
0.6
0.4
0.2
0.0
PGOOD
FIGURE 19. LOAD REGULATION AT V
0
EN
2
LOAD = 50mΩ
20µs
EN
V
IN
4
= 19V
V
IN
6
= 12.6V
IN
= 12.6V, V
SREF
V
8
IN
OUT
I
= 12.6V, V
OUT
10
(A)
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OUT
12
OUT
V
= 1.05V, LOAD = 10A
IN
14
= 8V
OUT
= 1.05V,
16
= 1.1V
August 14, 2008
SREF
V
OUT
18
PGOOD
FN6707.0
20