exit ship mode of battery charger BQ25115

POTHIRAJAN KANDASAMY

Other Parts Discussed in Thread: BQ25155

Hi,

I am using BQ25155 battery charger IC in my design. Have a query about "wake from ship mode" which one of the below statement is accurate.

1) While trying to take BQ25155 out of shipping mode, is it good enough just to connect power to VIN pin (Reason: Just before figure 18 of data sheet states, "In the case where a valid VIN (VIN > VUVLO) is connected prior to WAKE2 timer expiring, the device will exit the ship mode immediately regardless of the MR or wake timer state.")

2) MR should be held low for a short time(longevity of time is not important) & connect power to VIN pin.(Reason: Figure 19 of data sheet shows MR "held low" as a condition to move out of ship-mode).

We want to exit ship mode while inserting USB charging cable if there is any shareable design please share with me.

Thanks in advance.

Regards,

Pothirajan.K

over 5 years ago

0 Raheem over 5 years ago

TI__Mastermind 21590 points

Hello,

Both statements are correct. The charger will ext shipmode when you either plugin VIN or you pull /MR low with a pushbutton for longer than 125ms.

0 POTHIRAJAN KANDASAMY over 5 years ago in reply to Raheem

Intellectual 600 points

Hi Sharafadeen Raheem,

Thanks for quick response. I was interpreting Figure 19 of data sheet as "MR to be held low AND valid VIN together can result in exiting from ship mode". Thanks for clarifying that it is either/or not And of both signals. This has resolved my issue. Thanks again.

Regards,

Pothirajan.K

Power management

Power management forum

exit ship mode of battery charger BQ25115