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ISL62391IRTZ Datasheet(PDF) 9 Page - Intersil Corporation |
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ISL62391IRTZ Datasheet(HTML) 9 Page - Intersil Corporation |
9 / 20 page 9 FN6666.4 December 22, 2008 Typical Performance Curves FIGURE 5. CHANNEL 1 EFFICIENCY AT VO =3.3V, DEM OPERATION. HIGH-SIDE 1xIRF7821, rDS(ON) =9.1mΩ; LOW-SIDE 1xIRF7832, rDS(ON) =4mΩ; L = 4.7µH, DCR = 14.3mΩ; CCM FSW = 270kHz FIGURE 6. CHANNEL 2 EFFICIENCY AT VO =5V, DEM OPERATION. HIGH-SIDE 1xIRF7821, rDS(ON) =9.1mΩ; LOW-SIDE 1xIRF7832, rDS(ON) =4mΩ; L = 4.7µH, DCR = 14.3mΩ; CCM FSW = 330kHz FIGURE 7. POWER-ON, VIN = 12V, LOAD = 5A, VO =3.3V FIGURE 8. POWER-OFF, VIN = 12V, IO =5A, VO =3.3V FIGURE 9. ENABLE CONTROL, EN1 = HIGH, VIN = 12V, VO = 3.3V, IO =5A FIGURE 10. ENABLE CONTROL, EN1 = LOW, VIN = 12V, VO = 3.3V, IO =5A 50 55 60 65 70 75 80 85 90 95 100 0.10 1.00 10.00 IOUT (A) VIN = 7V VIN = 12V VIN = 19V 50 55 60 65 70 75 80 85 90 95 100 0.01 0.10 1.00 10.00 IOUT (A) VIN = 7V VIN = 12V VIN = 19V VO1 FB1 PGOOD PHASE1 VO1 FB1 PGOOD PHASE1 VO1 FB1 PGOOD EN1 VO1 FB1 PGOOD EN1 ISL62391, ISL62392 |
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