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Full Bridge SMPS controllers have no output overload protection ?

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treez

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Do you know why there are no Full Bridge SMPS controllers on the planet earth which have on-chip output overload protection and output short circuit protection?

We wish to do an offline 500W Full Bridge SMPS.

Vin=360VDC
Vout=48vdc
Pout = 500W

Eg the LM5030 has no protection features other than the standard source sense overcurrent limit
https://www.ti.com/lit/ds/symlink/lm5030.pdf
 

Simple: on-chip output protection required galvanic isolation barrier from primary voltage to secondary voltage, This isolation device consume more space in the IC. So recommending opt- isolator outside the IC for feed back controls.
 
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Thanks but that cant be the reason, since there are a great many offline flyback controllers (eg topswitch), which have output overload protection. This is done via the feedback optocoupler. Why cant the full bridge control chips have this too?
 

Does the current sense on the control chip not cater for this is some sense (as per page 15 for the LM5030)

overload.PNG
 

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