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TPS40422 Datasheet(PDF) 8 Page - Texas Instruments |
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TPS40422 Datasheet(HTML) 8 Page - Texas Instruments |
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8 / 71 page  8 TPS40422 SLUSAQ4E – OCTOBER 2011 – REVISED SEPTEMBER 2016 www.ti.com Product Folder Links: TPS40422 Submit Documentation Feedback Copyright © 2011–2016, Texas Instruments Incorporated Electrical Characteristics (continued) TJ = –40ºC to 125ºC, VIN = VDD = 12 V, fSW = 500 kHz, all parameters at zero power dissipation (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT CURRENT LIMIT tOFF(oc) Off-time between restart attempts Hiccup mode 7×tSS ms DCR Inductor DCR current sensing calibration value Factory default settings 0.488 mΩ Programmable range 0.240 15.500 IOC(flt) Output current overcurrent fault threshold Factory default settings 30 A Programmable range 3 50 IOC(warn) Output current overcurrent warning threshold Factory default settings 27 A Programmable range 2 49 IOC(tc) Output current fault/warning temperature coefficient(2) 3900 4000 4100 ppm/°C IOC(acc) Output warning and fault accuracy (VCSxP-VCSxN) = 30 mV –15% 15% PGOOD VFBPGH FB PGOOD high threshold Factory default settings 675 mV VFBPGL FB PGOOD low threshold Factory default settings 525 mV VPG(acc) PGOOD accuracy over range 4.5 V ≤ VVDD ≤ 20 V, 468 mV ≤ VPGOOD ≤ 675 mV –4% 4% Vpg(hyst) FB PGOOD hysteresis voltage 25 40 mV RPGOOD PGOOD pulldown resistance VFB = 0, IPGOOD = 5 mA 40 70 Ω IPGOOD(lk) PGOOD pin leakage current No fault, VPGOOD = 5 V 20 µA OUTPUT OVERVOLTAGE/UNDERVOLTAGE VFBOV FB pin over voltage threshold Factory default settings 700 mV VFBUV FB pin under voltage threshold Factory default settings 500 mV VUVOV(acc) FB UV/OV accuracy over range 4.5 V ≤ VVDD ≤ 20 V –4% 4% OUTPUT VOLTAGE TRIMMING AND MARGINING VFBTM(step) Resolution of FB steps with trim and margin 2 mV tFBTM(step) Transition time per trim or margin step After soft-start time 30 µs VFBTM(max) Maximum FB voltage with trim and/or margin 660 mV VFBTM(min) Minimum FB voltage with trim or margin only 480 mV Minimum FB voltage range with trim and margin combined 420 VFBMH Margin high FB pin voltage Factory default settings 660 mV VFBML Margin low FB pin voltage Factory default settings 540 mV TEMPERATURE SENSE AND THERMAL SHUTDOWN TSD Junction thermal shutdown temperature(2) 135 145 155 °C THYST Thermal shutdown hysteresis(2) 15 20 25 °C ITSNS(ratio) Ratio of bias current flowing out of TSNS pin, state 2 to state 1 9.7 10.0 10.3 ITSNS State 1 current out of TSNSx pin(2) 10 µA ITSNS State 2 current out of TSNSx pin(2) 100 µA VTSNS Voltage range on TSNSx pin(2) 0 1.00 V TSNS(acc) External temperature sense accuracy(2) 0°C ≤ TJ ≤ 125°C –5 5 °C TOT(flt) Overtemperature fault limit(2) Factory default settings 145 °C OT fault limit range(2) 120 165 °C TOT(warn) Overtemperature warning limit(2) Factory default settings 125 °C OT warning limit range(2) 100 140 °C TOT(step) OT fault/warning step 5 °C TOT(hys) OT fault/warning hysteresis(2) 15 20 25 °C |
Similar Part No. - TPS40422_16 |
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Similar Description - TPS40422_16 |
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