We are evaluating MP5515 for one of our application.
In MP5515 datasheet, There is a section on RCP on page 19,
“The ISOFET circuit applies reverse-current protection (RCP) when energy is released from the storage capacitors to VB. Typically, a
250mA reverse current from VB to VIN shuts down the ISOFET.”
I have few doubts here,
Unless there is a Reverse current of 250mA flowing from VB to VIN, whether ISOFET won’t be OFF, i.e. the RCP functionality won’t kick in.
Because, if it is the case, then I need to allow 250mA of current on VIN side, for RCP to kick in.
ISOFET looks like Back-to-Back MOSFET so, when it is OFF there won’t be Forward/Reverse current flow. Why MP5515 will wait until it see 250mA Back current flow to Turn OFF the ISOFET. Am i missing something on this?