Bootstrap hi side drive chips dont let negative voltages...why do they care?

[Flyback]

Hi,
The attached circuit is NOT OK due to the negative voltage of TS w.r.t GND.
Howcome it cant take such a neg voltage?....
(LTspice and jPeg scm attache)

2ED2182S06
https://www.infineon.com/dgdl/Infin...N.pdf?fileId=5546d4626cb27db2016cb8d7368a29e3

LTC4440
https://www.analog.com/media/en/technical-documentation/data-sheets/4440fb.pdf

 

[shortbus=]

I'm surprised at your reading skills. Did you read the first paragraph on the first page? Especially sentence 3? Where it states the high side works with either a bootstrap or isolated supply? An isolated supply could be the form of a DC-DC converter. But they all will work with them, so this chip isn't anything out of the ordinary.

 

[shortbus=]

How about something like this, if you can deal with it being surface mount.

https://www.mouser.com/datasheet/2/302/MC33883-783680.pdf