Smps with IR2153 for audio amplifier

My design an switching power supply use IR2153 + mofet(or IBGT) for audio amplifier

+/-63V,12A (unregular)
+/-15V,800mA for pre amplifier circuit
+12V,800mA for protect circuit,fan,...

size 12x12cm
 

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Testing with load is resistor 30ohm(4.2A) + 1 lamp(0.6A) = 4.8A from B+ to B- ( total 126V = 63Vx2)

P = 126x4.8A = 604W not use fan in 2h
Heatsink for mosfet about 95 oC,if use small fan is power higher
 

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Hi Hien.t.nguyen
greetings is this full schematic
1 source of CPR signal
2 overcurrent protection
3 voltage feedback
warm regards
andrew lebon

Dear Andrewlebon

1. Point CPR is over current protect (about 20A at pri)

3. My smps use IR2153 unregular for main voltage(+/-100V),not need voltage feedback

My smps has been over voltage protect,over current protect,over temperature protect.

regards