suggest boost converter circuit

[kimera]

please. suggest boost converter circuit. (need tr frequency gen)
 vin 10-60Vdc, Vout 180-250Vdc, Iout 0.5A

thanks all.

[eleguy]

Have you tried https://webench.ti.com/power-designer/ ?

[kimera]

it's design for ic only me need Transistor because my local hard to buy ic.

[Andy Chee]

Are you able to obtain locally these ICs;

TL494?
SG3525?

[kimera]

Are you able to obtain locally these ICs;

TL494?
SG3525?

Can be purchased but has Vin restrictions. If possible I would like to use an "astable multivibrator" type circuit, but I don't know how to feedback it to get 180V.

[Andy Chee]

Please post an example schematic of your proposed astable mulvibrator design.

[kimera]

Please post an example schematic of your proposed astable mulvibrator design.

[ Specified attachment is not available ]
can edit for Vin 12-60Vdc ?

[PCB.Wiz]

can edit for Vin 12-60Vdc ?

If you supply R1,R2,R3,R4 from a ( > 60V) NPN + 12V Zener regulator, that will have the gate drive of the correct voltage.
The circuit is very crude, with VBE based feedback it will have terrible temperature drift.
A fast, low loss switching diode should be used, and the MOSFET and inductor will need to be good enough to handle 15A level currents for your desired 10V in
10V to 250V, at 25:1, is a significant ask.
 

[kimera]

can edit for Vin 12-60Vdc ?

If you supply R1,R2,R3,R4 from a ( > 60V) NPN + 12V Zener regulator, that will have the gate drive of the correct voltage.
The circuit is very crude, with VBE based feedback it will have terrible temperature drift.
A fast, low loss switching diode should be used, and the MOSFET and inductor will need to be good enough to handle 15A level currents for your desired 10V in
10V to 250V, at 25:1, is a significant ask.

Do you have a sample circuit for me to study as a guideline? Or is there a recommended circuit that can receive Vin 10-60Vdc output 180-250Vdc?
Thanks

[youngda9]

This design gets you 90% of the way there.  Slap a linear regulator in the circuit to limit Vin to the controller chip.  Vout1 output voltage can be changed to overtake the linear regulator loading if you'd like.  There may also be a single output version of this chip to keep it simpler.  Vout2 is the main power output voltage...will need to add some circuitry into get you an adjustable output voltage if that's what is desired.  Some other minor changes may be needed (compensation, etc.).

https://www.analog.com/en/resources/evaluation-hardware-and-software/evaluation-boards-kits/dc2744a.html#eb-overview