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Hi, Domenico,
In order to calculate the power dissipation, we can measure the input voltage, input current, output voltage, and output current whiling charging battery. The power dissipation is equal to input voltage*input current - out voltage*output current.
Best,
Zhiyong
Hi Zhiyong,
thanks, but I'm more interested to the Rds on of the FETs inside the BQ25970.
I do not know If I can cosider the ones present in the BQ25968 because in the comparison table on page 4 of the Datasheet of BQ25968 the BQ25970 seems supporting 8A while the BQ25968 only 6A.
best regards,
Domenico
Hi, Domenico,
Which application do you use BQ25970 at? Knowing the application background may help us better assist you.
The typical Rds-on values of FETs inside BQ25970 are almost the same as BQ25968 as shown in the figure below.
The reason why BQ25970 can support 8A charging is because of the different protection mechanisms.
Best,
Zhiyong