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BQ40Z50-R1: BQ40z50 DSG charge pump vs bq30z554-R1

Hollis Liu
Intellectual 2535 points
Part Number: BQ40Z50-R1
Other Parts Discussed in Thread: BQ30Z554-R1, BQ40Z50

Hi team,

BQ40z50-R1

BQ30z554-R1

i have 2 questions about BQ40z50-R1 DSG drive, 

  1. Is there any difference between BQ40z50-R1 and bq30z554-R1 DSG drive circuit? The BD is quite different in datasheet as above. 
  2. For bq40z50-R1, if we turn off DSG MOSFET, will the gauge connect the gate(DSG pin) and source(PACK pin) internally? What about BQ30z554-R1?