Intersil ISL8272MEVAL1Z, User Manual

Page: 11 / 15

User Guide 003
11
UG003.0
September 17, 2014
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Typical Performance Data
The following data was acquired using a ISL8272MEVAL1Z evaluation board.
FIGURE 11. OUTPUT CURRENT MEASUREMENT ACCURACY AT
V
IN
= 12V, V
OUT
= 1V, T
A
= +25°C FOR VARIOUS
SWITCHING FREQUENCIES
FIGURE 12. OUTPUT CURRENT MEASUREMENT ACCURACY AT
V
IN
= 12V, V
OUT
= 1V, f
SW
= 533kHz FOR VARIOUS
AMBIENT TEMPERATURES
FIGURE 13. OUTPUT CURRENT MEASUREMENT ACCURACY AT
V
IN
= 12V, V
OUT
= 3.3V, T
A
= +25°C FOR VARIOUS
SWITCHING FREQUENCIES
FIGURE 14. OUTPUT CURRENT MEASUREMENT ACCURACY AT
V
IN
= 12V, V
OUT
= 3.3V, f
SW
= 533kHz FOR VARIOUS
AMBIENT TEMPERATURES
FIGURE 15. EFFICIENCY vs OUTPUT CURRENT AT V
IN
= 12V,
f
SW
= 300kHz FOR VARIOUS OUTPUT VOLTAGES
FIGURE 16. EFFICIENCY vs SWITCHING FREQUENCY AT V
IN
= 12V,
I
OUT
= 50A FOR VARIOUS OUTPUT VOLTAGES
55
50
45
40
35
30
25
20
15
10
5
0
0 5 10 15 20 25 30 35 40 45 50 55
ACTUAL OUTPUT CURRENT (A)
MEASURED OUTPUT CUR
RE
NT
(A)
300kHz
533kHz
421kHz
800kHz
55
50
45
40
35
30
25
20
15
10
5
0
0 5 10 15 20 25 30 35 40 45 50 55
ACTUAL OUTPUT CURRENT (A)
MEASURED OUTPUT C
URRENT (A)
+45°C
+65°C
+25°C
300kHz
533kHz
421kHz
800kHz
55
50
45
40
35
30
25
20
15
10
5
0
0 5 10 15 20 25 30 35 40 45 50 55
ACTUAL OUTPUT CURRENT (A)
MEAS
U
R
E
D
OU
TP
U
T
CURRENT (A)
+45°C
+65°C
+25°C
55
50
45
40
35
30
25
20
15
10
5
0
0 5 10 15 20 25 30 35 40 45 50 55
ACTUAL OUTPUT CURRENT (A)
M
E
ASURED OUTPUT
CURRENT (A)
0.65
0.70
0.75
0.80
0.85
0.90
0.95
1.00
0 5 10 15 20 25 30 35 40 45 50
0.8V
1V
1.2V
1.8V
2.5V
3.3V
I
OUT
(A)
E
F
FICIE
NCY (
%
)
5V
0.82
0.84
0.86
0.88
0.90
0.92
0.94
0.96
0.98
300 350 400 450 500 550 600 650 700 750 800 850 900
SWITCHING FREQUENCY (kHz)
EFFICIENCY (%)
1V
1.2V
1.8V
2.5V
3.3V
0.8V
5V