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TPS40425 Datasheet(PDF) 7 Page - Texas Instruments |
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TPS40425 Datasheet(HTML) 7 Page - Texas Instruments |
7 / 95 page TPS40425 www.ti.com SLUSBO6A – JANUARY 2014 – REVISED JULY 2014 Electrical Characteristics (continued) TJ = –40ºC to 125ºC, VIN = VVDD = 12 V, RT set for 500 kHz, all parameters at zero power dissipation (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT CURRENT SENSING AMPLIFIER (VCSxP – VCSxN), non-smart power mode 0 60 mV VCS(mg) Differential input-voltage linear range (VCSxP – VCSxN), smart power mode 0 600 VCS(cmr) Input common-mode range Non-smart power mode 0 3.6 V VCS(cm) Input common-mode voltage Smart power mode 1.24 V CHx_CSGAIN_SEL= 20 V/V(7), non-smart 10 power mode ACS Current sensing gain V/V CHx_CSGAIN_SEL= 20 V/V (7), smart power 1 mode fCO Closed loop bandwidth(8) 0.66 MHz Amplifier output difference between two IOUT_CAL_GAIN = 0.503 m Ω, VCS(chch) –6% 6% channels(9) IPHASE = 20 A CURRENT LIMIT tOFF(oc) Off-time between restart attempts Hiccup mode 7 × tSS ms Factory default settings 30 Output peak current overcurrent fault IOC(flt) A threshold Programmable range 3 50 Factory default settings 27 Output peak current overcurrent warning IOC(warn) A threshold Programmable range 2 49 Output peak current overcurrent fault and IOUT = 30 A, IOUT_CAL_GAIN = 0.503 mΩ –10% 10% warning accuracy IOC(acc) Output peak current overcurrent warning IOUT = 27 A, IOUT_CAL_GAIN = 0.503 mΩ –10% 10% accuracy 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% 4% Vpg(hyst) FB PGOOD hysteresis voltage 15 28 45 mV RPGOOD PGOOD pulldown resistance VFB = 0, IPGOOD = 5 mA 50 Ω IPGOOD(lk) PGOOD pin leakage current VFB = 600 mV, VPGOOD = 5 V 20 µA OUTPUT OVERVOLTAGE AND 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% 4% VOV(hyst) FB OV hysteresis voltage 25 55 90 mV 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 Maximum FB voltage with trim or margin VFBTM(max) 660 mV only Minimum FB voltage with trim or margin VFBTM(min) 480 mV only FB voltage range with trim and margin VFBTM(rng) 420 660 mV combined VFBMH Margin high FB pin voltage Factory default settings 660 mV VFBML Margin low FB pin voltage Factory default settings 540 mV OUTPUT VOLTAGE AT AVS MODE VFBAVS(step) Resolution of FB steps at AVS mode 2 mV VFBAVS(max) Maximum FB voltage at AVS mode 1.5 V VFBAVS(min) Minimum FB voltage at AVS mode 500 mV (7) Please refer to PMBus command MFR_SPECIFIC_21 (OPTIONS) (E5h) section. (8) Specified by design. Not production tested. (9) Performance is verified under application conditions. Copyright © 2014, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: TPS40425 |
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