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I purchased an AWR1843BOOST automotive radar sensor evaluation module. The power supply must be purchased separately.

The specifications say I need a 5 V, >2.5 A supply brick with a 2.1 mm barrel jack (center positive).

I am unable to decide if it is a DC supply or AC and if 5 V, 3 A is enough or if 5 V, 5 A will be needed. How do I decide?

ocrdu
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Pankaj Sejwal
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  • @winny I need to purchase power adapter, can you point to some example that fits this criteria. I am not an electrical guy. – Pankaj Sejwal Jan 13 '23 at 06:57
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    It is 5VDC and the rating has to be >2.5A so either 3A or 5A is okay. You'll have to check the jack dimensions and polarity. Product recommendations are off-topic here. – Spehro Pefhany Jan 13 '23 at 06:58
  • @SpehroPefhany It has cost me a lot of money to buy and wrong supply will burn it. It is requested that some product is recommended. I don't have money to purchase it again. – Pankaj Sejwal Jan 13 '23 at 07:01
  • This is a product usage question. If documetation is unclear, ask the manufacturer. – Justme Jan 13 '23 at 07:04
  • Any power brick supplying 5VDC >2.5A would suffice. As Spehro said, either 3A or 5A, or any other one with an amperage >2.5A are fine. – Velvel Jan 13 '23 at 07:04
  • 5.5 mm / 2.1 mm barrel jacks are fairly standard and should not be hard to find. – StarCat Jan 13 '23 at 07:05
  • @Velvel The polarity must be correct, so not all power bricks have correct polarity. – Justme Jan 13 '23 at 07:06
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    We do not recommend specific products because an item that is readily available to me probably won't be available to you (and something I would buy would work on 120 VAC while I suspect you have 240 VAC available.) And a product I recommend today may not be available next week. – Peter Bennett Jan 13 '23 at 07:07
  • @Justme Yes, as OP already stated in their question. – Velvel Jan 13 '23 at 07:08
  • @PankajSejwal You might want to check out the [TI support forums](https://e2e.ti.com). – Velvel Jan 13 '23 at 07:09
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    Does this answer your question? [Choosing power supply, how to get the voltage and current ratings?](https://electronics.stackexchange.com/questions/34745/choosing-power-supply-how-to-get-the-voltage-and-current-ratings) – winny Jan 13 '23 at 08:28
  • @winny It is certainly helpful. Thank you. – Pankaj Sejwal Jan 18 '23 at 15:01

1 Answers1

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That's going to be DC (AC wouldn't have a 'positive') and 3 A should be enough if it's calling for a 2.5 A supply.

GodJihyo
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