BQ25713 datasheet(77/111 Pages) TI2

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8.6.18 Vmin Active Protection Register (I2C address = 3F/3Eh) [reset = 006Ch(2s~5s)/0004h(1S)]

To set the VAP VBUS PROCHOT trigger threshold, write a 7-bit Vmin Active Protection register command

(REG0x3F[7:1]) using the data format listed in Figure 8-33 and Table 8-42. The charger provides VAP mode

VBUS PROCHOT trigger threshold range from 3.2 V (0000000b) to 15.9 V (1111111b), with 100-mV step

resolution. There is a fixed offset of 3.2 V. Upon POR, the VBUS PROCHOT trigger threshold is 3.2 V

(0000000b).

To set VSYS_TH2 Threshold to assert STAT_VSYS, write a 6-bit Vmin Active Protection register command

(REG0x3E[7:2]) using the data format listed in Figure 8-33 and Table 8-43. The charger Measure on VSYS with

fixed 5-µs deglitch time. Trigger when SYS pin voltage is below the thresholds. The threshold range from 3.2

V (000000b) to 9.5 V (111111b) for 2s~5s and 3.2 V (000000b) to 3.9 V (000111b) for 1S, with 100-mV step

resolution. There is a fixed DC offset which is 3.2 V. Under 1S application writing beyond 3.9 V will be ignored.

For example, xxx111b and 000111b result in same VSYS_TH2 setting 3.9 V. Upon POR, the VSYS PROCHOT

trigger threshold is 3.2 V (000000b) for 1S and 5.9 V (011011b) for 2s~5s .

Figure 8-33. Vmin Active Protection Register (I2C address = 3F/3Eh) [reset = 0070h/0004h]

VBUS_VAP_TH

Bit6

VBUS_VAP_TH

Bit5

VBUS_VAP_TH

Bit4

VBUS_VAP_TH

Bit3

VBUS_VAP_T

H Bit2

VBUS_VAP_TH

Bit1

VBUS_VAP_TH

Bit0

Reserved

R/W

VSYS_TH2 Bit6 VSYS_TH2 Bit5 VSYS_TH2 Bit4 VSYS_TH2 Bit3

VSYS_TH2

Bit2

VSYS_TH2 Bit1 EN_TH2_FOLL

OW_TH1

EN_FRS

R/W

LEGEND: R/W = Read/Write; R = Read only; -n = value after reset

Table 8-42. Vmin Active Protection Register (I2C address = 3Fh) Field Descriptions

BIT

FIELD

TYPE

RESET

DESCRIPTION

VBUS_VAP_TH, Bit6

R/W

0 = Adds 0 mV of VAP Mode VBUS PROCHOT trigger voltage threshold

1 = Adds 6400 mV of VAP Mode VBUS PROCHOT trigger voltage

threshold

VBUS_VAP_TH, Bit5

R/W

0 = Adds 0 mV of VAP Mode VBUS PROCHOT trigger voltage threshold

1 = Adds 3200 mV of VAP Mode VBUS PROCHOT trigger voltage

threshold

VBUS_VAP_TH, Bit4

R/W

0 = Adds 0 mV of VAP Mode VBUS PROCHOT trigger voltage threshold

1 = Adds 1600 mV of VAP Mode VBUS PROCHOT trigger voltage

threshold

VBUS_VAP_TH, Bit3

R/W

0 = Adds 0 mV of VAP Mode VBUS PROCHOT trigger voltage threshold

1 = Adds 800 mV of VAP mode VBUS PROCHOT trigger voltage threshold

VBUS_VAP_TH, Bit2

R/W

0 = Adds 0 mV of VAP mode VBUS PROCHOT trigger voltage threshold

1 = Adds 400 mV of VAP mode VBUS PROCHOT trigger voltage threshold

VBUS_VAP_TH, Bit1

R/W

0 = Adds 0 mV of VAP mode VBUS PROCHOT trigger voltage threshold

1 = Adds 200 mV of VAP mode VBUS PROCHOT trigger voltage threshold

VBUS_VAP_TH, Bit0

R/W

0 = Adds 0 mV of VAP mode VBUS PROCHOT trigger voltage threshold

1 = Adds 100 mV of VAP mode VBUS PROCHOT trigger voltage threshold

Reserve

R/W

Reserve

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BQ25730

SLUSE65A – FEBRUARY 2021 – REVISED JANUARY 2024

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