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8
FN9123.3
November 8, 2004
Typical Performance Curves
(Oscilloscope Plots Are Taken Using the ISL6402EVAL4A Evaluation Board, VIN = 12V, Unless Otherwise Noted)
FIGURE 1. PWM1 LOAD REGULATION
FIGURE 2. PWM2 LOAD REGULATION
FIGURE 3. REFERENCE VOLTAGE VARIATION OVER
TEMPERATURE
FIGURE 4. SOFT-START WAVEFORMS WITH PGOOD
FIGURE 5. PWM1 WAVEFORMS
FIGURE 6. PWM2 WAVEFORMS
3.3
3.32
3.33
3.35
3.38
3.39
3.4
0
1
2.5
3.5
LOAD CURRENT (A)
P
4.5
0.5
1.5
2
3
4
3.37
3.36
3.34
3.31
3.3
3.32
3.33
3.35
3.38
3.39
3.4
0
1
2.5
3.5
LOAD CURRENT (A)
P
4.5
0.5
1.5
2
3
4
3.37
3.36
3.34
3.31
-40
-20
20
40
80
0.75
0.81
0.85
0.84
TEMPERATURE (°C)
R
0.78
0.83
0.8
0.77
0
60
0.82
0.79
0.76
PGOOD
5V/DIV
V
OUT3
2V/DIV
V
OUT2
2V/DIV
V
OUT1
2V/DIV
V
OUT1
20mV/DIV, AC COUPLED
I
L1
0.5A/DIV, AC COUPLED
PHASE1
10V/DIV
V
OUT2
20mV/DIV, AC COUPLED
I
L2
0.5A/DIV, AC COUPLED
PHASE2
10V/DIV
ISL6402