9v - 200V flyback design guide

[moh19814]

flyback design guide

Hi everybody,
I am new in the field and i want to design a flyback converter to charge a capacitor to 200 V from a battery of 9V. I am planing to use a switching frequency of 100Khz. however I am ready to hear any suggestions. Please also how can i produce a feedback loop to monitor continuously the voltage in the capacitor and shut down the device when voltage reach 200v.

Thanks in advance

 

[Rishi2530]

flyback converter 3843

hi
you can use ic 3843 for this application

 

[moh19814]

flyback and a 9v

thanks for the advice, but i still do not know how to build the system, i mean how to build the converter using this IC. Also, if any one know how to simulatesuch kind of circuits in orcad since I found a already built converter but i could not simulate it in orcad.
thanks

 

[Rishi2530]

9v flyback

ok tell me ur current requirements i will design the circuit for u .

 

[ashein]

flyback 3843

hi
i am working designing and building a flyback converter.i found good information in this site:
https://focus-webapps.ti.com/genera...searchTerm=transformer+design&statusCode=null
and if you want i whould send you some books that is suitable on this field.

 

[moh19814]

9v to <200v converter

Thanks, the output current should be 15mA to have an output power of 30 watt
and the input power is 35 watt with efficiency of 85%. The input current is 4A.

I need to measure the current in primary side. Also, I need to measure the capacitor output voltage but through an opto-isolation path.

Thanks very much in advance.