ISL6402 Datasheet, PDF (9/19 Pages) Intersil Corporation – 300kHz Dual, 180 Degree Out-of-Phase, Step-Down PWM and Single Linear Controller

ISL6402
Typical Performance Curves (Continued)
(Oscilloscope Plots Are Taken Using the ISL6402EVAL4A Evaluation Board, VIN = 12V, Unless Otherwise Noted)
V_OUT1 200mV/DIV
AC COUPLED
V_OUT1 200mV/DIV
AC COUPLED
I_OUT1 1A/DIV
FIGURE 7. LOAD TRANSIENT RESPONSE VOUT1 (3.3V)
I_OUT1 1A/DIV
FIGURE 8. LOAD TRANSIENT RESPONSE VOUT2 (3.3V)
VCC_5V 1V/DIV
V_OUT1 2V/DIV
V_OUT1 1V/DIV
FIGURE 9. PWM SOFT-START WAVEFORM
100
90
80
70
60
0
1
2
3
4
LOAD CURRENT (A)
FIGURE 11. PWM1 EFFICIENCY vs LOAD (3.3V), VIN = 12V
9
I_L1 2A/DIV
SS1 2V/DIV
FIGURE 10. OVERCURRENT HICCUP MODE OPERATION
100
90
80
70
60
0
1
2
3
4
LOAD CURRENT (A)
FIGURE 12. PWM2 EFFICIENCY vs LOAD (3.3V), VIN = 12V
FN9123.3
November 8, 2004