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ISL6410AIRZ-TK Datasheet(PDF) 9 Page - Intersil Corporation |
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ISL6410AIRZ-TK Datasheet(HTML) 9 Page - Intersil Corporation |
9 / 13 page 9 Layout Considerations As in all switching power supplies, the layout is an important step in the design process, more so at high peak currents and switching frequencies. Improper layout practice will give rise to Stability and EMI issues. It is recommended that wide and short traces are used for the main current paths. The input capacitor should be placed as close as possible to the IC pins. This applies to the output inductor and capacitor as well. The analog ground, GND, and the power ground, PGND, need to be separated. Use a common ground node to minimize the effects of ground noise. Performance Curves and Waveforms FIGURE 4. ISL6410 EFFICIENCY vs LOAD CURRENT FIGURE 5. ISL6410 VIN vs EFFICIENCY FIGURE 6. ISL6410A EFFICIENCY vs LOAD CURRENT FIGURE 7. ISL6410A EFFICIENCY vs VIN 1000 100 50 100 80 50 IOUT LOAD CURRENT (mA) 90 70 60 VOUT = 1.8V VOUT = 1.2V VOUT = 1.5V 3.3 2.9 90 80 70 60 VIN INPUT VOLTAGE (V) 3.1 3.5 50 IOUT = 200mA IOUT = 600mA 100 1000 100 50 100 80 50 IOUT LOAD CURRENT (mA) 90 70 60 VOUT = 3.3V VOUT = 1.2V VOUT = 1.8V 5.6 5.0 4.4 VIN (V) 4.8 5.2 4.6 5.4 90 80 70 60 50 100 IOUT = 600mA IOUT = 200mA ISL6410, ISL6410A |
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