BQ25504: Compatibility of a 4.15 OCV solar panel

Sanchitha Dias

Part Number: BQ25504
Other Parts Discussed in Thread: BQ25505

Hi All,

I was just wondering whether using a 4.15 OCV solar panel for BQ25504 chip would cause any issues?.

Even though datasheet mentions an absolute maximum of 5.5V on the VIN_DC pin, can the chip still be be able to operate with MPPT at 3.35V of the solar panel.

The datasheet of the solar panel is as follows. It would be really great if I could know an answer ASAP.

Regards,

Sanchitha.

over 6 years ago

0 Sanchitha Dias over 6 years ago

Intellectual 795 points

Moreover, the manufacturer (IXYS) has specifically recommended BQ25504 (ixapps.ixys.com/PartDetails.aspx, Where it is still above the BQ25504's recommended specifications.

0 Jeff F over 6 years ago in reply to Sanchitha Dias

TI__Guru**** 166416 points

Hi Sanchitha,

As long as the VMPP is below the VIN_DC maximum and VBAT_OV threshold and the VOC is below the absolute maximum, I see no issues.

Regards,
Jeff

0 Sanchitha Dias over 6 years ago in reply to Jeff F

Intellectual 795 points

Hi Jeff,

Thank you very much for your reply. I Just have another doubt to get clarified.

Would Vmpp being 3.35V be a problem, where BQ25504's recommended maximum VIN_DC is 3V.

Regards,
Sanchitha.

0 Jeff F over 6 years ago in reply to Sanchitha Dias

TI__Guru**** 166416 points

Hi Sanchitha,

Unfortunately I cannot warranty the device above the datasheet specifications. The BQ25505 has a higher voltage rating and will work for your application.

Regards,
Jeff

0 Sanchitha Dias over 6 years ago in reply to Jeff F

Intellectual 795 points

Thank you Jeff I will try to stick to the datasheet's specifications.

Kind Regards,
Sanchitha

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BQ25504: Compatibility of a 4.15 OCV solar panel