BQ24650: BQ24650RVAR

Yahia Bouriga

Part Number: BQ24650

Tool/software:

Hello,

I’ve been using the BQ24650EVM-639 user guide to help with the design of my board. The schematic shows that components without values (C9, C13, R4, R8, and R16) are not installed.

I’m curious about the purpose of some of these components, especially R8 and R16. For example, if R8 is not installed, can I simply add C9 (a 10uF decoupling capacitor) directly to ground instead?

Thanks for your help!

sluu444a.pdf

6 months ago

+1 Christian Moyer 6 months ago

TI__Mastermind 32286 points

Hello Yahia,

I recommend refering to our schematic checklist:BQ24610_BQ24650_Schematic_Checklist (57).pdf

R8/C9:Reduce switch node ringing on HSFET turn-on. Recommended to include footprint for evaluation, in case parasitic components from layout result in higher than expected ringing cuasing switching loss and EMI noise.(not Required)

R16: pull TERM_EN to GND, Disable Charge Termination, must be pulled high or low can not be left floating.

R4: is used to set MPPT voltage, you can just use one resistor R3.

C13:High freqnecy noise decoupling and/or thermistor detach delay capacitor, Recommended

Best Regards,

Christian.

0 Yahia Bouriga 6 months ago in reply to Christian Moyer

Prodigy 30 points

Hello Christian,

Thank you for your response. I’ll be sure to review the schematic checklist you mentioned.

As I continue working on my design, I would like to request a design review once I’m finished. Should I create a new topic for that, or should I continue in this current thread?

Best Regards,

0 Christian Moyer 6 months ago in reply to Yahia Bouriga

TI__Mastermind 32286 points

Hello Yahia,

I recommend creating a new topic.

Best Regards,

Christian.

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BQ24650: BQ24650RVAR