Hello there,
Does the BQ25892 have reverse polarity protection? It is a battery charger therefore it is more than just adding a diode, especially for a portable device. Do you have any recommendations towards this end?
Thanks,
Ashwati
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Hello there,
Does the BQ25892 have reverse polarity protection? It is a battery charger therefore it is more than just adding a diode, especially for a portable device. Do you have any recommendations towards this end?
Thanks,
Ashwati
Ashwati,
The charger does not have battery reverse polarity protection. Please refer to the application note Reverse Current/Battery Protection Circuits at https://www.ti.com/lit/an/slva139/slva139.pdf for the details.
Thanks,
Ning.
Hello Ning,
Thank you for the clear response - the document you have listed shows 2 methods, the diode and the transistor version for reverse polarity protection. However, I am using the BQ26892 for a portable device, and the above methods are not recommended for battery chargers because they act as both sink and sources (Ref: https://www.edn.com/reverse-voltage-protection-for-battery-chargers/).
Are you aware of any solutions or application notes/reference designs that TI has that suggests a clean design for reverse polarity protection for designs with battery chargers?
Thanks,
Ashwati