ISL78225 Datasheet, PDF (11/21 Pages) Intersil Corporation – 4-Phase Interleaved Boost PWM Controller with Light Load Efficiency Enhancement

ISL78225
Typical Performance Curves (Continued)
C1 = PWM1, 5V/DIV
C1 = PWM1, 5V/DIV
C2 = PWM2, 5V/DIV
C2 = PWM2, 5V/DIV
C3 = PWM3, 5V/DIV
C4 = CLK_OUT, 5V/DIV
C3 = PWM3, 5V/DIV
C4 = CLK_OUT, 5V/DIV
1µs/DIV
FIGURE 8. WAVEFORMS WITH PWM_INV = GND
1µs/DIV
FIGURE 9. WAVEFORMS WITH PWM_INV = V_CC
C1 = PWM1, 5V/DIV
C3 = PWM3, 5V/DIV
C4 = PWM4, 5V/DIV
16V INPUT, 36V @ 10A OUTPUT
C2 = IL1, 5A/DIV
1µs/DIV
FIGURE 10. FULL LOAD WAVEFORMS
C1 = EN, 2V/DIV
C2 = VCC, 5V/DIV
C3 = PGOOD, 5V/DIV
10V INPUT, 36V @ 1A OUTPUT
C4 = VOUT, 20V/DIV
1µs/DIV
FIGURE 11. ENABLE/DISABLE WAVEFORMS
10V INPUT, 10A OUTPUT
C1 = VREF2, 1V/DIV
C4 = VOUT, 20V/DIV
20ms/DIV
FIGURE 12. MODULATING VREF2 INPUT
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FN7909.0
December 15, 2011