High output voltage power supply

Posted by: Zaznaczony on 02/14/2025

Greetings,

I would like to ask, if You have available any driver ICs capable of delivering high output voltages in range between 150 and 250V. I'm interested in converters that can achieve this with 230V mains, switching frequency above 20kHz and output current between 20 and 30mA. I worked with TOPSwitches and Tinyswitches, but their maximum voltage that you can set in PIexpert is 100V, and it's too low for my needs. Could You reccomend something that will met these specifications?

Thanks for your help,
KK

Comments

Hello Zaznaczony,

Good day and thank you for continuously choosing Power Integrations devices.

Unfortunately, our PI Expert platform has limitations regarding the maximum output voltage that you can enter on the design. What you can do is use the other design platform, which is the PI XLS spreadsheet (please refer to the attached image). The PI XlS spreadsheet allows you to enter an output voltage greater than 100 V, and considering your output power requirement, I suggest using our LinkSwitch-XT2 900 V device (specifically LNK3696P) for your design. Using a 900 V device allows us to enter a higher reflected voltage (VOR) value to reduce the peak inverse voltage (PIV) of the secondary rectifier for cost reduction purposes.

Please refer to the attached file for a sample design that has an output voltage of 150 V and an output current of 30 mA. Kindly also use the AN-86 LinkSwitch-XT2 design guide because it is basically a step-by-step guide of using the PI XLS spreadsheet with the LinkSwitch-XT2 device.

If you wish to play around with some parameters and specifications of the initial design, below is the PI Expert link.

https://piexpertonline.power.com/piexpert/design/select?share=377836ad0e66a2ade651a6f4ad5fc9a8c234d69b11f24d2fec0603dc0f5902f6

I hope this helps. Let me know if you need anything else. Have a great day ahead.

Best Regards,

Tommy

Attachment	Size
Sample.JPG (36.16 KB)	36.16 KB
an-86_linkswitch-xt2_design_guilde (1).pdf (2.34 MB)	2.34 MB
LinkSwitch-XT2900V Flyback Design3.pdf (1.39 MB)	1.39 MB

Thank you for reply,

As long as there is transformer construction tab, and it's there I think I can figure it out. Design schematics is similar to other ones that I have experience with.

Thanks for reply,
KK

Hello Zaznaczony,

You're welcome. Feel free to reach out if you need further assistance or if you have any more questions or clarifications.

Have a great day ahead!

Regards,

Tommy