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BQ25570EVM-206 : BQ25570 Rin Q&A

Part Number: BQ25570EVM-206
Other Parts Discussed in Thread: BQ25570

I have a question about the Rin on the bq25570 evmboard.

I think the value of Rin, the resistance to the VIN_DC terminal on the board, is 2.27k ohms.

I want to know exactly how much this is.

  • Hi Sanghyun,

    Are you referring to the resistance from VIN_DC pin to GND when VSTOR=0V?  We haven't characterized that value.

    Keep in mind, there is an NFET from VIN_DC to ground that turns on if VIN_DC=VMPP > VBAT_OV to prevent over-voltage on the storage element.