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TPS65010RGZT Datasheet(PDF) 20 Page - Texas Instruments |
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TPS65010RGZT Datasheet(HTML) 20 Page - Texas Instruments |
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20 / 63 page  + Pack+ Pack– TEMP Battery Pack LTF HTF TS bqTINY II RT1 RT2 NTC V(HTF) V(LTF) I(TS) + Pack+ Pack– TEMP Battery Pack V(HTF) V(LTF) LTF HTF TS I(TS) bqTINY II NTC TPS65010 SLVS149C – JUNE 2003 – REVISED SEPTEMBER 2015 www.ti.com Feature Description (continued) Figure 26. TS Pin Configuration Figure 27. TS Pin Threshold 7.3.1.3 Battery Preconditioning On power up, if the battery voltage is below the V(LOWV) threshold, the TPS65010 applies a precharge current, I(PRECHG), to the battery. This feature revives deeply discharged cells. The charge current during this phase is one tenth of the value in current regulation phase which is set with IO(out) = KSET × V(SET)/R(SET). The load current in preconditioning phase must be lower than I(PRECHG) and must allow the battery voltage to rise above V(LOWV) within t(Prechg). VBAT_A is the sense pin to the voltage comparator for the battery voltage. This allows a power on sense measurement if the VBAT_A and VBAT_B pins are connected together at the battery. The TPS65010 activates a safety timer, t(PRECHG), during the conditioning phase. If V(LOWV) threshold is not reached within the timer period, the TPS65010 turns off the charger and indicates the fault condition in the CHGSTATUS register. In the case of a fault condition, the TPS65010 reduces the current to I(DETECT). I(DETECT)is used to detect a battery replacement condition. Fault condition is cleared by POR or battery replacement or through the serial interface. 7.3.1.4 Battery Charge Current TPS65010 offers on-chip current regulation. When charging from an AC adapter, a resistor connected between the ISET1 and AGND pins determines the charge rate. A maximum of 1-A charger current from the AC adapter is allowed. When charging from a USB port either a 100-mA or 500-mA charge rate can be selected through the serial interface, default is 100 mA max. Two bits are available in the CHGCONFIG register in the serial interface to reduce the charge current in 25% steps. These only influence charging from the AC input and may be of use if charging is often suspended due to excessive junction temperature in the TPS65010 (e.g., at high AC input voltages) and low battery voltages. 20 Submit Documentation Feedback Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPS65010 |
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