ISL6402 INTERSIL [Intersil Corporation], ISL6402 Datasheet - Page 9

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ISL6402

Manufacturer Part Number
ISL6402
Description
300kHz Dual, 180 Degree Out-of-Phase, Step-Down PWM and Single Linear Controller
Manufacturer
INTERSIL [Intersil Corporation]
Datasheet

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Typical Performance Curves
(Oscilloscope Plots Are Taken Using the ISL6402EVAL4A Evaluation Board, VIN = 12V, Unless Otherwise Noted)
FIGURE 11. PWM1 EFFICIENCY vs LOAD (3.3V), VIN = 12V
V
AC COUPLED
I
FIGURE 7. LOAD TRANSIENT RESPONSE VOUT1 (3.3V)
OUT1
OUT1
1A/DIV
100
200mV/DIV
90
80
70
60
FIGURE 9. PWM SOFT-START WAVEFORM
0
V
OUT1
VCC_5V 1V/DIV
1
1V/DIV
LOAD CURRENT (A)
9
2
(Continued)
3
4
ISL6402
FIGURE 12. PWM2 EFFICIENCY vs LOAD (3.3V), VIN = 12V
FIGURE 10. OVERCURRENT HICCUP MODE OPERATION
V
AC COUPLED
V
FIGURE 8. LOAD TRANSIENT RESPONSE VOUT2 (3.3V)
I
SS1 2V/DIV
I
OUT1
OUT1
L1
OUT1
2A/DIV
100
200mV/DIV
1A/DIV
2V/DIV
90
80
70
60
0
1
LOAD CURRENT (A)
2
3
November 8, 2004
FN9123.3
4

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