One-Button On/Off Implementation with nPM1300

RE: One-Button On/Off Implementation with nPM1300

persoentif — Tue, 13 May 2025 09:41:22 GMT

Hello Sigurd,

Thanks for the explanation. We'll do our best. I hope we can find a solution for this

RE: One-Button On/Off Implementation with nPM1300

Sigurd Hellesvik — Fri, 09 May 2025 11:39:53 GMT

[quote user="persoentif"]

Maybe the customer does not want to use the device and just wants to charge it?

When the device is switched off and plugged into a charger, we do not want it to exit from ship mode and running.

[/quote]

Ship mode is for the shipping to the user. If the user plugs the device into a charger when they receive it, this is outside the scope of ship mode of the nPM1300.

[quote user="persoentif"]Yes re-enable ship mode would be a solution for us.[/quote]

This would have to be done by device SW.
I guess you could have some state that detects if the device has been enabled, and then if it has not been, it will re-enter ship mode when the USB is removed.

RE: One-Button On/Off Implementation with nPM1300

persoentif — Fri, 09 May 2025 07:49:58 GMT

Maybe the customer does not want to use the device and just wants to charge it?

When the device is switched off and plugged into a charger, we do not want it to exit from ship mode and running.

When SHPMODE is activated, every PMIC feature is disable, right? BUCK1/2 and LDOs.

Yes re-enable ship mode would be a solution for us.

RE: One-Button On/Off Implementation with nPM1300

Sigurd Hellesvik — Fri, 09 May 2025 06:50:50 GMT

The "exit shipmode on VDD connected" is a HW feature, and we do not have any override that you can use in SW for this.

So if you want the device to stay in ship mode when USB is connected, then I think you would have to have some hardware components on your PCB to handle this aside from the nPM1300.

However, what is the case you can come in where USB is connected but ship mode shall remain on?
For example, would it be a solution for you to re-enable ship mode in that case?

RE: One-Button On/Off Implementation with nPM1300

persoentif — Thu, 08 May 2025 13:47:21 GMT

Yes, we want to make sure that the device is in charging or idle mode when the USB is plugged in. We only want it to exit shp mode -I mean, the system's up and running- when the button is pressed.

RE: One-Button On/Off Implementation with nPM1300

Sigurd Hellesvik — Thu, 08 May 2025 13:14:04 GMT

[quote user="persoentif"]As an expert, what do you suggest we do?[/quote]

You mean what you can do to make sure that the device does not exit ship mode when you plug in the USB?

RE: One-Button On/Off Implementation with nPM1300

persoentif — Mon, 05 May 2025 09:20:36 GMT

Hi Sigurd,

Thanks,

I think we can solve this in the code.

As an expert, what do you suggest we do?

Regards

RE: One-Button On/Off Implementation with nPM1300

Sigurd Hellesvik — Mon, 05 May 2025 09:05:23 GMT

[quote user="persoentif"]In this example, the PMIC exits from ship mode when USB is inserted, is it possible to exit the PMIC from ship mode using only the button?[/quote]

No, the PMIC will exit SHIP mode once VBUS is applied. This is a HW feature, ref nPM1300 Datasheet: Ship and Hibernate modes.

[quote user="persoentif"]I couldn't see any exit function inside the code, so I wanted to ask? Is it code controlled or HW controlled?[/quote]

HW Controlled. See the datasheet linked above:

RE: One-Button On/Off Implementation with nPM1300

persoentif — Mon, 05 May 2025 07:59:32 GMT

Hello Sigurd,

Thank you for your answer. And yes this is what I need.

In this example, the PMIC exits from ship mode when USB is inserted, is it possible to exit the PMIC from ship mode using only the button?

I couldn't see any exit function inside the code, so I wanted to ask? Is it code controlled or HW controlled?

RE: One-Button On/Off Implementation with nPM1300

Sigurd Hellesvik — Mon, 05 May 2025 06:52:20 GMT

Hi,

[quote user=""]For a system requiring low power consumption, is nPM1300's built-in on/off management efficient enough to optimize battery life?[/quote]

In a lot of cases, it will be, yes.

For the rest of your questions:

Have a look at the nPM1300: One button sample. Does this do what you need?

Regards,
Sigurd Hellesvik