BQ25700A: noise, heating and problem with ADC

user4962001

Part Number: BQ25700A

Hello.

What was the reason for placing different RC-circuits on sense resistors on the evolution module? How important is the placing of these values?

over 6 years ago

0 user4962001 over 6 years ago

Prodigy 80 points

0 Paul Yeh over 6 years ago in reply to user4962001

TI__Genius 16185 points

Hi,
4.99 and 0.033uF is our final suggestion value for customer. It can improve input current regulation accuracy and control stability.
Thanks

0 user4962001 over 6 years ago in reply to Paul Yeh

Prodigy 80 points

Ok, but why nominals are different? On the adpt-resistor 4.99 ohm, 0,01uF and 0,033 uF; on the batt-resistor 10 ohm, 0.1uF and no capacitors to ground?

0 Paul Yeh over 6 years ago in reply to user4962001

TI__Genius 16185 points

Hi,
The purpose of this 10ohm resistor in series with SRP or SRN is not for noise filter. It is avoided battery reverse plug in to damage charger IC.
Thanks

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BQ25700A: noise, heating and problem with ADC