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Hello TI,
Please check the attachment for circuit design of Reverse battery protection by using CSD25402, please check and confirm that Is it working or not.
I have few question,
1. there is any issues In charging of battery because there internal body diode is available in MOSFET
2. This MOSFET I already used in my BMS design at BQ24773 circuit, as per the attachment can i use this sense circuit with MOSFET..?
3. if there is any integrated solution as per my application requirement please suggest us.
Thanks,
Rahul
Hello Rahul,
Thanks for the inquiry. This is a common reverse polarity protection circuit using a PFET as shown in the link below. I'm not sure how to answer questions 2 & 3 and will turn this over to the BQ24773 team for further review.
https://www.ti.com/lit/an/slva139/slva139.pdf
Best Regards,
John Wallace
TI FET Applications
Hi Rahul,
Your circuit looks reasonable. I don't see how either the FET or PNP in the circuit above is interfacing with BQ24773. If your question is about where to connect the BQ24773 BAT sense pin, then I recommend on the LOAD side in the circuit above. Otherwise, the charger BAT might see the negative voltage.
Regards,
Jeff
Hi Jeff,
Sense pin not going interface with BQ24773, its connected to host controller.
Thanks,
Rahul