If this question to me
The two 40V outputs are floating, so they can be connected in series with the center point connected to earth....
this is a different microcircuits and accordingly its schemes will be different.
power supply source of IR2153 is DC-DC based on Viper. Very reliable, in my observations.
No, but short circuit protection is reached by the half-bridge capacitors. Some voltage stabilization possible exists by the offset of the voltage on their common point. Аnd due to square-wave signal form in transformer voltage not in such degree depends from loads and capacity of output capacitors as in the event of with sinewave signal. Also, the absence of pwm modulation relieves output current filtering.
40V 10A; - circuit pulls without problems, possible get even 40V 100А from one ir2153 if contribute small change in scheme and use IGBT.
Yes, but better if you select core by themselves. This easy realize with the help of program "Excelent IT v5" (i think possible there are also other similar programs).
