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IR3531 Datasheet(PDF) 12 Page - International Rectifier |
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IR3531 Datasheet(HTML) 12 Page - International Rectifier |
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12 / 39 page  4+1 Phase Dual Output Control IC IR3531 March 22, 2012 | FINAL | V2.27 12 PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT Turbo Circuit Activation Threshold Voltage TURBACT Note 1 Compare to EA, Note 1 - 390 - mV Turbo Comparator Hysteresis TURBHYST Note 1 Note 1 - 90 - mV Filter Time Constant TURBTIME Note 1 Note 1 - 8 - µs Turbo Pulse Width TURBPW 500kHz 600mV Peak sine wave on EAIN, measure GATEH pulse width 115 230 280 ns Peak Detect Reset Time Constant TURBRESET - 400 - ns Over-Current Comparator Input Filter Time Constant - 2 - µs Over-Current Threshold OCTHRSH VDRP-VDAC, VDRP1-VDAC1 0.94 1.08 1.18 V OC Threshold PSI Reduction Factor OCPSI PSI mode, 4ph to 2ph, 2ph to 1ph 450 540 610 mV PSI mode, 3ph to 1ph 310 360 410 3ph to 2ph 640 720 800 PSI mode, 4ph to 1ph 220 270 310 4ph to 3ph 690 800 900 OC Delay Time OCDELAY Delay to OC shutdown 225 256 285 µs OC Hiccup Time Relaxation Delay - 4096 - µs VCC Undervoltage VCC UVL Start VCCSTART 5.5 5.85 6.4 V VCC UVL Stop VCCSTOP 4.85 5.2 5.65 V VCC UVL Hysteresis VCCHYST 515 650 830 mV VRRDY Output Output Voltage VRRDYLO I(VRRDY, VDRRY1) = 4mA - 150 300 mV Leakage Current VRRDYLEAK V(VRRDY, VDRRY1) = 5.5V - 0 10 µA VCC Activation Voltage VRRDYVCC I(VDRRY, VDRRY1) = 4mA, <300mV 1 2 3.6 V VO-VDAC Undervoltage Threshold VOUVRISE Reference to VDAC -340 -290 -230 mV Open Sense Line Detection Sense Line Detection Active Comparator Threshold Voltage OPENACT 100 150 200 mV Sense Line Detection Active Comparator Offset Voltage OPENOFF V(VO) < [V(VOSEN+) – V(LGND)] / 2 25 60 80 mV VOSEN+ Open Sense Line Comparator Threshold OPENCOMP+ Compare to V(VCC) 82 90 92 % VOSEN- Open Sense Line Comparator Threshold OPENCOMP- 0.36 0.40 0.44 V Sense Line Detection Source Currents OPENSRC V(VO) = 100mV 200 500 700 µA VCC Buck Regulator VCC Output Voltage VCC100 100–400 mA load current 6.5 6.8 7.1 V |
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