Synchronous inverting converter

Takashi Yamaguchi

Genius 13490 points

Other Parts Discussed in Thread: LM25576, LMR33630

Hi team,

My customer is looking for a inverting converter. Could you suggest a recommended solution for the following condition?

Vin=+24V

Vout=-10V

Iout=1.2A~

Regards,

Yamaguchi

over 4 years ago

0 LeonardEllis over 4 years ago

TI__Guru 71526 points

Hello Yamaguchi-san,

For your power supply design, I recommend you start with WEBENCH: https://webench.ti.com/power-designer/switching-regulator . From the designs WEBENCH generates, you can then sort/filter the designs by any of the parameters. You can then compare other factors and select the design that is best suited for the application. WEBENCH provides you a way to easily compare designs to find what the best solution for your product will be.

For the parameters you provided, WEBENCH generated over 200 designs. Please filter on those parameters that are most important for this design and let us know which design you have selected, and if you have any other questions.

Regards,

~Leonard

0 Takashi Yamaguchi over 4 years ago in reply to LeonardEllis

TI__Genius 13490 points

Hi Leonard-san,

Thank you for your advise. I tried the Webench, but the internal FET synchronous type was not appeared. The only ones that showed up were modules, external diode types, and external FET types. Therefore, we don't have a solution of internal FET synchronous type for the condition?

Note : This is inverting circuit. Vout is minus 10V.

Regards,

Yamaguchi

0 LeonardEllis over 4 years ago in reply to Takashi Yamaguchi

TI__Guru 71526 points

Hello Yamaguchi-san,

I did not see the minus 10VOUT, I had generated designs for +10. With the -10VOUT, there are four designs based around the LM25576 with integrated FET. As such, I am moving this to the BSR-WV team, they will assist from this point.

domo Arigatō

ありがとう

~Leonard