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TPS51513 Datasheet(PDF) 5 Page - Texas Instruments |
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TPS51513 Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 37 page  TPS51513 www.ti.com ...................................................................................................................................................................................................... SLUS956 – JUNE 2009 ELECTRICAL CHARACTERISTICS (continued) over recommended free-air temperature range, V5IN = V5FILT = 5.0V, GSNS = PGND = GND, VSNS = VCORE (Unless otherwise noted). PARAMETER CONDITIONS MIN TYP MAX UNIT OVERSHOOT REDUCTION (OSR) THRESHOLD SETTING VOSRSEL = GND 85 133 VOSRSEL = REF 119 170 VOSR OSR voltage set mV VOSRSEL = 3.3 V 163 220 VOSRSEL = V5FILT; OSR is OFF N/A VOSRHYS OSR voltage hysteresis(2) All settings 20 mV TIMERS: SLEW RATE, ISLEW, ON-TIME AND I/O TIMING ISLEW 1 RSLEW to GND current RSLEW = 125 kΩ from ISLEW to GND 9.9 10 10.15 µA ISLEW 2 RSLEW to VREF current RSLEW = 45 kΩ from VREF to ISLEW 9.5 10 10.8 µA ISLEW = |10 µA|, No Faults, Time from EN to tSTARTUP VSNS startup time 0.6 1.15 ms VSNS = VVID = 1.0 ISLEW = |10 A|, EN goes ‘HI’ (Soft-start) SLSTRTSTP VSNS slew soft-start / soft-stop 1.3 1.6 1.9 mV/ µs Non-OVP Fault = ‘Soft-stop’ ISLEW = |10 µA|, SLP goes low/high. Measure SLSLPE VSNS slew SLP exit 10 12.5 15 mV/ µs slew on SLP transition. tPGDPO PGOOD power-on delay time Time from PG going low to PGOOD going HI 3 6 9 ms Time from VSNS out of +200 mV/–300 mV tPGDDGLT PGOOD deglitch time 50 100 160 µs VDAC boundary to PGOOD low. VTON = GND, VLL=12 V, VSNS=1 V 265 319 385 VTON = REF, VLL=12 V, VSNS=1 V 215 259 295 tON On-time control ns VTON = 3.3 V, VLL=12 V, VSNS=1 V 180 215 250 VTON = 5 V, VLL=12 V, VSNS=1 V 140 160 185 tMIN Controller minimum off-time Fixed value 80 105 125 ns tVIDDBNC VID debounce time(2) 100 ns tVCCVID VID change to VSNS change (2) 600 ns tVRONPGD EN low to PGOOD low 100 ns tPGDVCC PGOOD low to VSNS change(2) 100 ns PROTECTION: OVP, PGOOD, FAULTS OFF AND INTERNAL THERMAL SHUTDOWN Internal high OVP threshold VVOVPH VSNS > VOVPH for 500 ns, DRVL turns ON 1.50 1.55 1.60 V voltage Measured at the VSNS pin wrt/VID code. device VPGDH PGOOD high threshold 183 215 247 mV latches OFF, begins soft-stop. Measured at the VSNS pin wrt/VID code. device VPGDL PGOOD low threshold –358 –315 –275 mV latches off, begins soft-stop. Internal controller thermal Not final tested. Latch off controller, attempt THINT 160 °C shutdown(2) soft-stop. Not final tested. Controller will start again after THHYS Thermal shutdown hysteresis(2) 10 °C temperature has dropped. (2) Ensured by design. Not production tested. Copyright © 2009, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Link(s) :TPS51513 |
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