ISL6402A Datasheet, PDF (9/18 Pages) Intersil Corporation – 1.4MHz Dual, 180 Out-of-Phase, Step- Down PWM and Single Linear Controller

ISL6402A
Typical Performance Curves (Continued)
(Oscilloscope Plots Are Taken Using the ISL6402AEVAL4B 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
I_L1 2A/DIV
SS1 2V/DIV
FIGURE 10. OVERCURRENT HICCUP MODE OPERATION
100
90
80
70
0 0.5 1 1.5 2 2.5 3 3.5 4
LOAD CURRENT (A)
FIGURE 11. PWM1 EFFICIENCY vs LOAD, VIN=5V, VOUT=3.3V
9
100
90
80
70
0 0.5 1 1.5 2 2.5 3 3.5 4
LOAD CURRENT (A)
FIGURE 12. PWM2 EFFICIENCY vs LOAD, VIN=5V, VOUT=3.3V
FN9010.3