thanks but my kindest and considerate friend, i explain to you the words "buckboost led driver with low side FET and LEDs referenced to the input voltage"
....and really, that can only mean one thing, if it does not mean anything to you , then i would say that you are probably not going to be able to comment on this.
I am humbled by your responding to me and taking your time to consider me, but i say to you my friend, that if my basic explanation means nothing to you , then thanks for trying, really, thanks.