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K
Kaleeswaran
Associate II
July 24, 2023
Solved

Viper26 power supply design

  • July 24, 2023
  • 2 replies
  • 1932 views

Hi, 

 anyone tells me how to design a 24vdc to 15vdc  buck converter using viper26ld?

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Best answer by Peter BENSCH

If you want to stay with STMicroelectronics, there are a bunch of devices for converting 24V to 15V, the recommendation only depends on the output current. You could e.g. have a look at theL6981 or the L6986 .

Regards /Peter

2 replies

AScha.3
AScha.3
Super User
July 24, 2023

hi,

you have 24V IN ? and want 15v out ? then viper26 is totally wrong for this.

take a LV2862XLVDDCR or TPS563300DRLR ; which current ??

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    K
    KaleeswaranAuthor
    Associate II
    July 24, 2023

       Thank you for your reply

      Current 400mA

    Peter BENSCH
    Peter BENSCHBest answer
    Technical Moderator
    July 24, 2023

    If you want to stay with STMicroelectronics, there are a bunch of devices for converting 24V to 15V, the recommendation only depends on the output current. You could e.g. have a look at theL6981 or the L6986 .

    Regards /Peter

      AScha.3
      AScha.3
      Super User
      July 24, 2023

      or cheaper and also STM : the good old MC34063 . ->

      MC34063ABD-TR .

       

      at mouser :  511-MC34063ABD-TR

      "If you feel a post has answered your question, please click ""Accept as Solution""."
        Peter BENSCH
        Peter BENSCH
        Technical Moderator
        July 24, 2023

        The MC34063 is a very old device working with very low switching frequency, which requires bulky passive devices. In addition it is an asynchronous regulator, which requires a Schottky diode. All in all this might be the more expensive and bigger solution.

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