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BQ25120A: Question about ship mode

Shaquille Chen
Intellectual 1770 points
Part Number: BQ25120A
Other Parts Discussed in Thread: BQ25150, BQ25155

Hi Team,

Please help to feedback below questions from customer:

 

First power on:

  1. What is the defaut state of BQ25150 as battery insertion without Vin? Ship mode?
  2. If so, how many ways to leave ship mode? Pull low MR until over Twake2, and any else?
  3. If plugged in Vin before battery insertion, BQ25150 will enter normal mode even after Vin removed?

 

Enter ship mode:

  1. We can set MR_LPRESS_ACTION to trigger HW_RESET or SHIP-MODE.

If set to MR_LPRESS_ACTION  to SHIP-MODE, do we still need to set EN_SHIP_MODE=1?

  1. There are two ways to enter ship mode by set EN_SHIP_MODE=1, right?

#1: Plug in adapter to Vin and set EN_SHIP_MODE=1, BQ25150 will enter ship mode after Vin removed.

#2: No Vin and set EN_SHIP_MODE=1, after MR pin pull low to over T_wake2, BQ25150 will enter ship mode after MR pin released.

 

Leave ship mode,

  1. After pull low MR pin to over T_wake2 while BQ25150 is in ship mode, BQ25150 will leave ship mode to normal mode. Does BQ25150 still keep EN_SHIP_MODE=1 or change to default=0?

  • 0
    TI__Mastermind 21590 points

    Hello,

    First power on:

    1. What is the defaut state of BQ25150 as battery insertion without Vin? Ship mode?

    [SR]: When battery is inserted, BQ25150 defaults to shipmode. 

    2. If so, how many ways to leave ship mode? Pull low MR until over Twake2, and any else?

    [SR]: You can exit shipmode by VIN plugin or pulled /MR low longer than twake2 which is 2s by default. This number is 125ms in the BQ25155 with twake1

    3. If plugged in Vin before battery insertion, BQ25150 will enter normal mode even after Vin removed?

    [SR]: If the battery is present when VIN is removed, the device will be in either active BAT or low power mode depending on the /LP pin.


    4. If set to MR_LPRESS_ACTION  to SHIP-MODE, do we still need to set EN_SHIP_MODE=1?

    [SR]: No. The device will enter shipmode when the long press time is met.


    5. There are two ways to enter ship mode by set EN_SHIP_MODE=1, right?

    [SR]: Yes/ Through enable shipmode bit or MR long press.

    6. Plug in adapter to Vin and set EN_SHIP_MODE=1, BQ25150 will enter ship mode after Vin removed.

    [SR]: Yes


    7. No Vin and set EN_SHIP_MODE=1, after MR pin pull low to over T_wake2, BQ25150 will enter ship mode after MR pin released.

    [SR]: BQ25150 will enter shipmode after the enable shipmode bit is written if /MR is high.

    8. After pull low MR pin to over T_wake2 while BQ25150 is in ship mode, BQ25150 will leave ship mode to normal mode. Does BQ25150 still keep EN_SHIP_MODE=1 or change to default=0?

    [SR]: Shipmode bit changes back to 0 when device exits shipmode.