Other Parts Discussed in Thread: BQ2002F, BQ25303J, BQ25302, BQ25616, BQ25300, BQ25172, BQ2002
Hello team,
The customer has a question. The customer is considering to evaluate BQ2002C.
BQ2002C/E datasheet says the following in Synchronized Voltage Sampling at page5.
"Voltage is sampled on the falling edge of such pulses. If the time between pulses is greater than the synchronizing period, voltage sampling “free-runs” at once every 17 seconds. A sample is taken by averaging together voltage measurements taken 57μs apart. The IC takes 32 measurements in PVD mode and 16 measurements in -ΔV mode. The resulting sample periods (9.17 and 18.18ms, respectively) filter out harmonics centered around 55 and 109Hz."
However, these values do not match the calculation as below.
PVD = 57us x 32 = 1.818ms
-ΔV = 57us x 16 = 0.91ms
Which is correct as the following?
Is voltage measurements taken 570μs apart? or Is the resulting sample periods 0.91ms and 1.818ms?
In case of BQ2002F, voltage measurements is taken 570μs apart. so BQ2002C/E also is 570us?
Would you please advise?
Best Regards,
Akihisa Tamazaki
