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Polls RoadTest Poll: Do You Have Access to 210 VAC 3-Phase or 300VDC to Roadtest New Eval Board?
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  • Author Author: pchan
  • Date Created: 4 May 2021 4:58 PM Date Created
  • Last Updated Last Updated: 11 Oct 2021 3:00 PM
  • Views 638 views
  • Likes 2 likes
  • Comments 8 comments
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Recommended

RoadTest Poll: Do You Have Access to 210 VAC 3-Phase or 300VDC to Roadtest New Eval Board?

I have been contacted by a supplier who would like to sponsor a roadtest on a new quasi-resonant AC/DC Converter with a Built-in SiC MOSFET Isolation Fly-back Converter.

 

Its input voltage is much higher than what we normally see for products I roadtest.

 

This image communicates my point of concern in holding this roadtest:

 

Rohm RoadTest Image

Poll Question: Do You Have Access to 210 VAC 3-Phase or 300VDC?

 

Sincerely,

 

 

Randall Scasny

RoadTest Program Manager

  • rohm
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Top Comments

  • Fred27
    Fred27 over 4 years ago +2
    I'd have access to 3-phase at work but I don't think I'd be allowed to connect a road test product up to it. At home (in the UK) it's 240V single phase.
  • kmikemoo
    kmikemoo over 4 years ago +2
    Oh, yeah! This is right up my alley! More power. Whoot! 208v, 240v & 480v. 50w output. I could rig something up.
  • rsc
    rsc over 4 years ago +2
    Kinda looks like this board with some components changed to surface mount. ROHM BD7682FJ-LB-EVK
  • rscasny
    rscasny over 4 years ago in reply to rsc

    Yes, Rohm is the sponsor. I don't have the documentation in front of me, but I think it's similar to the product you included.

    Randall

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  • geralds
    geralds over 4 years ago

    Hi,

    nominal I have 3phase 230V_AC +-10% / 50Hz. / 400V_AC

    Here is the user guide / schematics about the ROHM BD7682FJ-LB-EVK 402:

    https://fscdn.rohm.com/en/products/databook/applinote/ic/power/acdc_converter/bd7682fj-evk-lb-402_ug-e.pdf

    https://www.rohm.com/products/power-management/ac-dc-converters-ics/ac-dc-controllers-quasi-resonant/bd7682fj-lb-product…

    It is a "normal" fly-back converter, just with a 3ph rectifier. - "Normal" - feature: It works in quasi resonant method and it use a ROHM silicon carbit MOSFET as driver.

    image

     

    Best regards

    Gerald

    ---

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  • navadeepganeshu
    navadeepganeshu over 4 years ago

    I have home wiring with 230V AC/3-PH and also used for water pump, but not the 300V DC(may need an additional rectifier system for it). I don't think someone would have 300V DC access unless in a power electronics lab or a super serious hardware garage at home. Anyways, I am out of high voltage RoadTest.

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  • rsc
    rsc over 4 years ago

    Kinda looks like this board with some components changed to surface mount.

    ROHM BD7682FJ-LB-EVK

    image

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  • neuromodulator
    neuromodulator over 4 years ago

    Why not just build a voltage multiplier? (or just rectifier if you have access to 220 VAC)

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  • kmikemoo
    kmikemoo over 4 years ago

    Oh, yeah!  This is right up my alley!  More power.  Whoot!  208v, 240v & 480v.  50w output.  I could rig something up.

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  • Fred27
    Fred27 over 4 years ago

    I'd have access to 3-phase at work but I don't think I'd be allowed to connect a road test product up to it. At home (in the UK) it's 240V single phase.

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  • dougw
    dougw over 4 years ago

    Households around here generally have 240 VAC split-phase, so most home outlets have 120 VAC, but big appliances use the full 240 VAC. But it is not 3 phase.

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