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TPS59640RSLT Datasheet(PDF) 5 Page - Texas Instruments |
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TPS59640RSLT Datasheet(HTML) 5 Page - Texas Instruments |
5 / 54 page TPS51640A, TPS59640, TPS59641 www.ti.com SLUSAQ2 – JANUARY 2012 ELECTRICAL CHARACTERISTICS (continued) over recommended free-air temperature range, VV5 = VV5DRV = 5.0 V; VV3R3 = 3.3 V; VxGFB = VPGND = VGND, VxVFB = VCORE (Unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT CURRENT SENSE: OVERCURRENT, ZERO CROSSING, VOLTAGE POSITIONING AND PHASE BALANCING TPS51640A 5.1 7.0 9.7 RxOCP-I = 20 kΩ TPS59640 4.6 7.0 9.7 TPS59641 TPS51640A 8.1 10.0 12.6 RxOCP-I = 24 kΩ TPS59640 7.6 10.0 13.1 TPS59641 TPS51640A 12.1 14.0 16.7 RxOCP-I = 30 kΩ TPS59640 11.6 14.0 17.2 TPS59641 TPS51640A 17.1 19.0 21.7 RxOCP-I = 39 kΩ TPS59640 16.6 19.0 22.2 TPS59641 OCP voltage (valley current VOCPP mV limit) TPS51640A 23.1 25.0 27.9 RxOCP-I = 56 kΩ TPS59640 22.6 25.0 28.4 TPS59641 TPS51640A 29.7 32.0 35.0 RxOCP-I = 75 kΩ TPS59640 29.2 32.0 35.5 TPS59641 TPS51640A 37.9 40.0 43.3 RxOCP-I = 100 kΩ TPS59640 37.4 40.0 43.8 TPS59641 TPS51640A 46.8 49.0 52.6 RxOCP-I = 150 kΩ TPS59640 46.2 49.0 53.1 TPS59641 VIMAX_MIN = 133 mV, value of xIMAX, 20 A VIMAX = VREF × IMAX / 255 VIMAX IMAX values both channels VIMAX_MAX = 653mV, value of xIMAX 98 A ICS CS pin input bias current CSPx and CSNx –1.0 0.2 1.0 µA xVFB input bias current, IxVFBDQ End of soft-stop, xVFB = 100mV 90 125 180 µA discharge TPS51640A 486 497 518 Droop amplifier GM-DROOP xVFB = 1 V µS TPS59640 transconductance 480 497 518 TPS59641 (VCSP1 – VCSN1) = (VCSP2 – VCSN2) = IBAL_TOL Internal current share tolerance –3% +3% (VCSP3 – VCSN3) = VOCPP_MIN ACSINT Internal current sense gain Gain from CSPx – CSNx to PWM comparator 11.65 12.00 12.30 V/V Copyright © 2012, Texas Instruments Incorporated Submit Documentation Feedback 5 |
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