BQ24618: BQ24618 design review

Nasrin Enayatzadeh

Part Number: BQ24618
Other Parts Discussed in Thread: BQ24610

Tool/software:

Hi TI support team,

I used BQ24618 in my design, could you please review the schematic attached here and let me know if I need to do some changes.

Vin power range ~5-20V.

I have 1 cell battery 3.7-4.2 range, Iout Max ~3A

ISET1: Sets the Max fast-charging current, and calculated @ I charge = 1A

ISET2: Sets the Pre-charging current, and calculated @ I precharge = 0.5A

ACSET: Sets the Input current limit @ I DPM= 5A

0 Christian Moyer over 1 year ago

Hello Nasrin,

I recommend following the schematic checklist. The checklist for BQ24610 is the same for BQ24618:BQ24610_BQ24650_Schematic_Checklist (35).pdf

Best Regards.

Christian.

0 Nasrin Enayatzadeh over 1 year ago in reply to Christian Moyer

Hi Christian,

Do you have any application note for layout Guideline? ( even for similar part )

0 Christian Moyer over 1 year ago in reply to Nasrin Enayatzadeh

Hello Nasrin,

Yes, Here is our layout guidelines:BQ24618

Best Regards,

Christian.

0 Nasrin Enayatzadeh over 1 year ago in reply to Christian Moyer

Hi Christian,

in layout guidelines #7, I'm confuse where should I tie Analog GND to power GND together.

this is how I did it; I have connect the IC thermal pad (copper) to Analog GND and add Power GND's vias underneath of IC

Please see the attached and please let know this is correct

Thanks

0 Christian Moyer over 1 year ago in reply to Nasrin Enayatzadeh

Hello Nasrin,

I don't see any obvious issue with the way that you connected the two GND connections.

Best Regards,

Christian.

Power management forum