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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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DA9072 데이터시트(PDF) 37 Page - Dialog Semiconductor |
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DA9072 데이터시트(HTML) 37 Page - Dialog Semiconductor |
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37 / 113 page  DA9072 Ultra-Low Quiescent Current PMIC Datasheet Revision 3.0 14-Jun-2021 CFR0011-120-00 37 of 113 © 2021 Dialog Semiconductor VBAT_UVLO and VBAT_SHORT are included in the table although they are not indicated as faults when VDD_PWR is present. Normal pre-charging continues in both cases. Table 26: Charge Faults Fault Charging Action STS_CHG Termination Safety timer VDD_PWR OVP Suspend VDD_PWR open Fault - Reset VDD_PWR UVLO Suspend VDD_PWR open Fault - Reset VDD_PWR DPM Continue VDD_PWR current limit decreased Fault Disable x2 VDD_PWR ILIM Continue VDD_PWR current limited Fault Disable x2 VBAT DPPM Continue Charge current reduced Fault Disable x2 VBAT OCP Suspend VBAT current limited Fault - Suspend Sleep mode Suspend Fault - Suspend Supplement mode Suspend Battery discharging Fault - Suspend TS COLD Suspend Fault - Suspend TS HOT Suspend Fault - Suspend TS COOL Continue Charge current reduced to half In- progress Disable x2 TS WARM Continue VBAT_CHG reduced by 140 mV In- progress Disable x1 TS OFF (fault option) Suspend Fault - Reset Safety timer Suspend Fault - Reset Over-temp. Suspend Fault - Reset VDD_SYS UVLO Suspend Power cycle Fault Reset VBAT Short Pre-charge In- progress x1 There are several option bits available to modify the fault behavior described above. Termination can be enabled during TS_WARM and TS_COOL, a TS_HOT fault can trigger a power cycle, and a TS_OFF condition can trigger a fault or simply disable the battery Temp Sense feature. 4.4.8 Safety Timers The safety timer starts counting as soon as a charge cycle begins, ensuring that the charge cycle is terminated even if the battery fails to reach the termination condition. The duration of the timer, tMAXCHG, is set by bit TMR (register 0x0021 [1:0]) between 30 minutes and 9 hours. If the safety timer expires before charging is terminated, SYS_FLT toggles, and the ISR_CHG_TMR event bit (register 0x005 [5]) is set to 1. In Pre-Charge mode, the timer period is 10 % of the safety timer setting. The pre-charge timer counts during pre-charging and is reset at the transition to Fast-Charge mode. If the charger is still in pre- charge at the end of the pre-charge timer period, the charge cycle is terminated. The main safety time is running during both fast charge and pre-charge modes. |
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