Viper26 power supply design

Kaleeswaran · ‎2023-07-24

Hi,

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

Peter BENSCH · ‎2023-07-24

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

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AScha.3 · ‎2023-07-24

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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Kaleeswaran · ‎2023-07-24

Thank you for your reply

Current 400mA

Peter BENSCH · ‎2023-07-24

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

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AScha.3 · ‎2023-07-24

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

MC34063ABD-TR .

at mouser : 511-MC34063ABD-TR

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Peter BENSCH · ‎2023-07-24

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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Kaleeswaran · ‎2023-07-24

Thank you for your suggestion.