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ISL6111 数据表(PDF) 10 Page - Intersil Corporation |
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ISL6111 数据表(HTML) 10 Page - Intersil Corporation |
10 / 16 page 10 parasitic inductance and resistance effects, maximize the width of the high-current PCB traces. PGOOD vs Power is Good and Fault Signals Keep in mind that the -12VOUT is not monitored for under voltage, thus the PGOOD output signal only takes into account the three positive supplies. PGOOD will assert once all minimum positive UV criteria is reached and the M12VO may not be more than a few volts below ground at that time. It will pull low once any positive voltage < UV Vth. For applications that don't use -12V, the M12VI pin on the ISL6111 is simply grounded. The Fault-not output, FLTN pulls low once the CR duration has expired and signals that all supplies have been disconnected from the load. See Figure 3 for operational PGOOD and FLTN waveforms. Adjusting the Current Regulation Level The current regulation level is adjusted by the CRSET resistance to ground value. The ratio of resistance to CR change is not linear but is unidirectional in relationship, see Figures 4-6. CORRECT TO ISL6111 VS AND VISEN TO ISL6111 VS AND VISEN CURRENT SENSE RESISTOR INCORRECT FIGURE 2. SENSE RESISTOR PCB LAYOUT FIGURE 3. FLTN & PGOOD FUNCTIONAL WAVEFORM 20ms/DIV 5VOUT 2/DIV 5IOUT 5A/DIV CR = 7.2A CRTIM 2V/DIV PGOOD / FLTN 5/DIV Typical Performance Curves & Waveforms FIGURE 4. 3.3V & 5V SLOWLY INCREASING CURRENT TRIP LEVEL vs TEMPERATURE AND RCRSET FIGURE 5. +12V & -12V SLOWLY INCREASING CURRENT TRIP LEVEL vs TEMPERATURE AND RCRSET 0 2 4 6 8 10 12 33.5 4 4.5 R_CRSET (k Ω) 5V 3.3V 0°C 85°C 25°C 0 0.1 0.2 0.3 0.4 0.5 0.6 33.5 44.5 R_CRSET (k Ω) +12V -12V 25°C 0°C 85°C ISL6111 |
类似零件编号 - ISL6111 |
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类似说明 - ISL6111 |
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