trouble with TPS40210 volatge booster

hi,
i have designed a voltage booster in TI web bench using TPS40210(see attachment) where i am boosting input voltage from 10-34v to 48v and its working but i need to use this 48v to feed into transformer circuit (see attachment ) but when i connect transformer section to voltage booster circuit output voltage of booster circuit gets reduce to 20v. please help me out to get out of this problem.



Thanks.

What is the PING signal driving the transformer?

Ping is the control pulses from microcontroller. and there is issue with those signal i checked by connecting external source to it.

The problem is voltage booster that i designed using TI web bench is designed for output capacitance of 150uF but i need to use 8350uF in place of it.when i tries to do so output voltage stabilizes to input voltage.

manju_gowda said:

The problem is voltage booster that i designed using TI web bench is designed for output capacitance of 150uF but i need to use 8350uF in place of it.when i tries to do so output voltage stabilizes to input voltage.

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Why do you need to use the odd value of 8350μF?