BQ25713 datasheet(34/111 Pages) TI2

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TOVLD

TMAX

TOVLD

IBUS

ILIM1

ILIM2

ICRIT

ISYS

IBAT

Ba ery Discharge

PROCHOT

ICRIT_DEG

PROCHOT_WIDTH

Figure 8-3. Two-Level Adapter Current Limit Timing Diagram

8.3.20 Processor Hot Indication

The events monitored by the processor hot function includes:

• ICRIT: adapter peak current, as 110% of ILIM2

• INOM: adapter average current (110% of IIN_DPM)

• IDCHG1: battery discharge current level 1

• IDCHG2: battery discharge current level 2, note IDCHG2 threshold is always larger than IDCHG1 threshold

determined by IDCHG_TH2 register setting.

• VBUS_VAP: VBUS threshold to trigger PROCHOT in VAP mode 2 and 3.

• VSYS: system voltage on VSYS pin

• Adapter Removal: upon adapter removal (VBUS is lower than ACOK_TH=3.2 V same as VVBUS_CONVENZ

threshold)

• Battery Removal: upon battery removal (CELL_BATPRESZ pin goes LOW)

• CMPOUT: Independent comparator output (CMPOUT pin HIGH to LOW)

• VINDPM: VBUS lower than 83%/91%/100% of VINDPM setting. The effective threshold PROCHOT_VINDPM

is determined by combination of register PROCHOT_VINDPM_80_90 bit and LOWER_PROCHOT_VINDPM

bit:

– PROCHOT_VINDPM=VINDPM register setting: LOWER_PROCHOT_VINDPM=0b;

– PROCHOT_VINDPM=83% VINDPM register setting:

LOWER_PROCHOT_VINDPM=1b;PROCHOT_VINDPM_80_90=0b;

– PROCHOT_VINDPM=91% VINDPM register setting:

LOWER_PROCHOT_VINDPM=1b;PROCHOT_VINDPM_80_90=1b;

• EXIT_VAP: Every time when the charger exits VAP mode.

The threshold of ICRIT, IDCHG1,IDCHG2,VSYS or VINDPM, and the deglitch time of ICRIT, INOM, IDCHG1,

IDCHG2, or CMPOUT are programmable through I2C register bits. Except the PROCHOT_EXIT_VAP is always

enabled, the other triggering events can be individually enabled in ProchotOption1[7:0], PP_IDCHG2 and

PP_VBUS_VAP. When any enabled event in PROCHOT profile is triggered, PROCHOT is asserted low for

a single pulse with minimal width programmable in PROCHOT_WIDTH register bits. At the end of the single

pulse, if the PROCHOT event is still active, the pulse gets extended until the event is removed.

BQ25730

SLUSE65A – FEBRUARY 2021 – REVISED JANUARY 2024

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