User Guide 046
5
UG046.0
August 28, 2015
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Typical Performance Curves
FIGURE 4. EFFICIENCY vs LOAD vs TEMPERATURE
V
IN
= 12V, V
OUT
= 3.3V, f
SW
= 300kHz
FIGURE 5. ISL70003ASEHEV2Z AMBIENT LOAD REGULATION
FIGURE 6. START-UP WAVEFORMS INTO 0.64
Ω
LOAD
FIGURE 7. 3A LOAD TRANSIENT RESPONSE
V
IN
= 12V, V
OUT
= 3.3V, f
SW
= 500kHz
FIGURE 8. PEAK CURRENT TO DC I
OUT
FIGURE 9. THERMAL IMAGE OF REGULATOR WITH 6A LOAD
V
IN
= 12V, V
OUT
= 3.3V, f
SW
= 300kHz, T
A
= +25°C
+25°C
-55°C
+125°C
+85°C
60
70
80
90
100
50
EFFICIENCY (%
)
LOAD CURRENT (A)
0
1
2
3
4
5
6
LO
AD R
E
G
U
LATI
ON
(%)
LOAD CURRENT (A)
-0.02
0.00
0.02
0.04
0.06
0.08
0.10
0.12
0.14
0
1
2
3
4
5
6
V
OUT
V
IN
I
OUT
20ms/DIV
LXx VOLTAGE, 5V/DIV
OUTPUT VOLTAGE, 50mV/DIV
LOAD CURRENT, 2A/DIV
LXx VOLTAGE, 5V/DIV
OUTPUT VOLTAGE, 50mV/DIV
LOAD CURRENT, 2A/DIV
100µs/DIV
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
OUTPUT CURRENT (A)
PEAK CUR
RE
NT
SE
N
SED (A)
