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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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TPS65820 Fiches technique(PDF) 10 Page - Texas Instruments |
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TPS65820 Fiches technique(HTML) 10 Page - Texas Instruments |
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10 / 94 page  www.ti.com ELECTRICAL CHARACTERISTICS – POWER PATH AND CHARGE MANAGEMENT (Continued) TPS65820 SLVS663 – MAY 2006 Over recommended operating conditions (typical values at T J = 25°C), application circuit as in Figure 3 (unless otherwise noted). PARAMETER TEST CONDITIONS MIN TYP MAX UNIT BATTERY RECHARGE DETECTION VRCH Recharge threshold voltage New charge cycle starts if V(BAT) < VO(BATREG)– VRCH, after 80 100 130 mV termination was detected tDGL(RCH) Deglitch time for recharge detection RTMR = 50 kΩ 22.5 ms DPPM FUNCTION VDPPM DPPM regulation point range V(DPPM) = RDPPM x KDPPMM x IO(DPPM) 2.6 4.4 V IO(DPPM) DPPM pin current source AC or USB Present 95 100 105 µA KDPPM DPPM scaling factor 1.139 1.15 1.162 DPPM de-glitch time Status bit set indicating DPPM loop active after deglitch time, 500 µs tDGL(DPPM) RTMR = 50 kΩ PACK TEMPERATURE SENSING VLTF Low temperture threshold Pack low temperature fault at V(TS) > VLTF 2.465 2.500 2.535 V VHTF High temperture threshold Pack low temperature fault at V(TS) < VHTF 0.485 0.500 0.515 V IO(TS) Temperature sense current source Thermistor bias current 18.8 20 21.2 µA Deglitch time for temperature fault R(TMR) = 50 k Ω, 22.5 ms tDLG(TFAULT) detection V(TS) > VLTF OR V(TS) < VHTF CHARGE AND PRE-CHARGE SAFETY TIMER Charge safety timer programmed Safety timer range, thermal/DPPM loop not active, 3 5 10 hours tCHG value tCHG = RTMR x KTMR KTMR Charge Timer set factor 0.313 0.360 0.414 s/ Ω Total elapsed time when DPPM or fast charge on, tCHGADD is the maximum add-on time added to 2 x tCHGADD hours thermal loop are active tCHG tCHG Precharge safety timer programmed Pre charge safety timer range, thermal/DPPM loop not active, 18 30 60 min tPRECHG value tPRECHG = KPRE x RTMR x KTMR KPRE Pre-charge timer set factor 0.09 0.1 0.11 Total elapsed time when DPPM or pre-charge on, tPCHGADD is the maximum add-on time added to 2 x tPCHGADD hours thermal loop are active tPRECHG tPRECHG RTMR External timer resistor limits 30 100 k Ω Timer fault recovery pull-up resistor Internal resistor connected from OUT to BAT after safety timer 1 k Ω RTMR(FLT) timeout THERMAL REGULATION LOOP Charge current decreasesd and timer extended when TJ > °C TTHREG Temperature regulation limit 115 135 TTHREG CHARGER THERMAL SHUTDOWN TTHCHG Charger thermal shutdown Charger turned off when TJ> TTHCHG 150 °C TTHCHGHYS Charger thermal shutdown hysteresis 30 °C 10 Submit Documentation Feedback |
Numéro de pièce similaire - TPS65820 |
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Description similaire - TPS65820 |
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