RE: Understanding of Protection Circuit Module (PCM) protection for nPM1300

ketiljo — Thu, 26 Feb 2026 14:38:56 GMT

[quote user=""]1. When the PCM activate the protection, the VBAT is 0V, is that correct?[/quote]

Yes

[quote user=""]2. When the VBAT is 0V, will the nPM1300 try to apply a voltage to the battery to remove the prortection status? Or do I have to set BCHGVBATLOWCHARGE to start trickle charging?[/quote]

The charger will source some current into the battery to try to open the protection. This should happen automatically.

[quote user=""]3. I saw this errata. When the PCM needs a voltage higher than Vterm*0.95 to remove protection, we need to raise the Vterm... But I don't understand this, how can I control the voltage of trickle charging? And I noticed that this errata has been fixed in nPM1300 revision 2. So what is the behavioral pattern of nPM1300 revision2 in this situation?[/quote]

This is only necessary for rev 1 devices. You can change VTERM in this register https://docs.nordicsemi.com/bundle/ps_npm1300/page/chapters/charger.html#ariaid-title26

No need to do anything for rev 2.