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TPS53647 Datasheet(PDF) 6 Page - Texas Instruments |
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TPS53647 Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 122 page  TPS53647 SLUSC39 – JUNE 2015 www.ti.com Recommended Operating Conditions (continued) over operating free-air temperature range (unless otherwise noted) MIN NOM MAX UNIT TA Operating free air temperature –40 125 °C 6.4 Thermal Information TPS53647 THERMAL METRIC(1) RTA (QFN) UNIT 40 PINS RθJA Junction-to-ambient thermal resistance 30.6 RθJC(top) Junction-to-case (top) thermal resistance 14.2 RθJB Junction-to-board thermal resistance 6.9 °C/W ψJT Junction-to-top characterization parameter 0.2 ψJB Junction-to-board characterization parameter 6.8 RθJC(bot) Junction-to-case (bottom) thermal resistance 1.8 (1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953. 6.5 Electrical Characteristics over recommended free-air temperature range, VVIN = 12 V; VV5 = 5 V; VVSN = GND, VVSP = VOUT (unless otherwise noted). PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY: CURRENTS, UVLO, AND POWER-ON RESET IVIN VIN supply current 4-phase active VVDAC < VVSP < VVDAC + 100 mV, ENABLE = HI 115 µA IV5 V5 supply current PMBus Idle, ENABLE = HI 6.1 7 mA IV5SBY V5 standby current ENABLE = LO 2 2.6 mA VV3R3 V3R3 output voltage IV3R3 = 0 A 3.2 3.3 3.4 V VV3R3(dropout) V3R3 load regulation IV3R3 = 5 mA 100 mV VV5UVLOH V5 UVLO OK threshold Ramp up 4.1 4.25 4.5 V VV5UVLOL V5 UVLO fault threshold Ramp down 3.95 4.05 4.25 V VHYS(V5) V5 UVLO hysteresis Hysteresis 0.15 0.23 0.3 V MFR_SPEC_16[1:0] = 00 4.2 4.5 4.7 MFR_SPEC_16[1:0] = 01 6.9 7.25 7.45 VVINUVLO VIN UVLO voltage V MFR_SPEC_16[1:0] = 10 8.6 9.0 9.25 MFR_SPEC_16[1:0] = 11 9.8 10.3 10.7 VHYS(VIN) VIN UVLO hysteresis voltage Hysteresis voltage 1 V REFERENCES: DAC AND VREF VR12.5: Change VID0 HI to LO to HI 10 mV VVIDSTP VID Step size VR12.0: Change VID0 HI to LO to HI 5 mV VDAC1 Closed Loop VSP tolerance VR12.0: 0.61 V ≤ VVSP ≤ 0.995 V, IOUT = 0 A , TA= 0 °C to 85 °C –6 6.5 mV VDAC2 Closed Loop VSP tolerance VR12.0: 1 V ≤ VVSP ≤ 1.52 V, ICOUT = 0 A, TA= 0 °C to 85 °C –0.6 0.6 % VDAC3 Closed Loop VSP tolerance VR12.5: 1.50V ≤ VVSP ≤ 2.50 V, IOUT = 0 A, TA= 0 °C to 85 °C –1 1 % VR12.0: 0.61 V ≤ VVSP ≤ 0.995 V, IOUT = 0 A,TA= -40 °C to 125 VDAC4 Closed Loop VSP tolerance –8 8 mV °C VDAC5 Closed Loop VSP tolerance VR12.0: 1.0 V ≤ VVSP ≤ 1.52 V, IOUT = 0 A,TA= -40 °C to 125 °C -0.8 0.8 % VDAC6 Closed Loop VSP tolerance VR12.5: 1.50 V ≤ VVSP ≤ 2.50V, IOUT = 0 A,TA= -40 °C to 125 °C -1.1 1.0 % VVREF VREF output VV5 = 4.5 to 5.5 V, IVREF = 0 A 1.685 1.70 1.717 V VVREFSRC VREF output source IVREF = 0 to 500 µA –4 -1 mV VVREFSNK VREF output sink IVREF = –500 to 0 µA 1 4 mV CURRENT SENSE: AMPLIFIER AND PHASE BALANCING GCSINT Internal current sense gain Gain from ( CSPx – VREF ) to PWM comparator 1.0 V/V COMPENSATOR: VOLTAGE POSITIONING AND AMPLIFIER gM(isum) ISUM amplifier transconductance VVSP = 1.7 V 500 µS gM(comp) COMP amplifier transconductance VVSP = 1.7 V 1000 µS VCCLAMPN COMP amplifier negative clamp voltage (VVREF – VCOMP) VRAMP + 20 mV VCCLAMPP COMP amplifier positive clamp voltage (VCOMP – VVREF) 2.1 2.2 2.3 V 6 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated Product Folder Links: TPS53647 |
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