Other Parts Discussed in Thread: BQ76952,
Hello, I am comparing BMS ICs right now and the BQ769x2 series look to be a good fit for my application. However, in most of TI's BMS controllers, adjacent cells can not be balanced simultaneously even if external FETs are used, due to the increased differential voltage that will be applied to the inputs adjacent to the cells being balanced.
In this newer product (BQ769x2), it is mentioned in the datasheet that the default algorithm will not balance adjacent cells, however an external controller can. Obviously if the internal FETs are used for balancing than balancing multiple adjacent cells will apply a larger voltage over the same external resistance, and cause excessive current flow through the IC. However, am I correct to presume that the reason the datasheet does not dissalow the balancing of adjacent cells, is because the cell voltage input terminals in the new device, are able to withstand the increased voltage from adjacent cell balancing? I noticed that in the older products, there was a specification in maximum allowable voltages for the maximum voltage between two cell voltage pins of ~8 volts. The new device does not have this specification. Does that mean that if using external fets, I am able to balance adjacent cells?
In addition, is there any Idea when the BQ76952 will be released? I see the BQ76942 is available for sample purchasing, but not the BQ76952 as it is still in prevew.
Thank you for your time.
