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RoadTests & Reviews
RoadTest Forum Seeking Your Feedback on RoadTesting an e-Fuse IC Eval Kit
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Forum Thread Details
  • Replies 14 replies
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  • roadtest survey
Related

Seeking Your Feedback on RoadTesting an e-Fuse IC Eval Kit

rscasny
rscasny over 1 year ago

imageWhen I was first approached about roadtesting an e-Fuse Eval kit, I had the following thought bubble up from deep in my mind: Why would we roadtest a fuse?

Then, I went to dear Google and asked it about the growth of e-Fuses. I'm not going to quote any particular study, but the use of e-Fuses is growing considerably.

So, I agreed to the roadtest because e-Fuses have a lot of tech in them for their size and I feel the community should explore them. Perhaps even compare them to ye old fashioned trip-wire fuse. It's perhaps something a new member, first time roadtester, or the curious-at-heart would be interested in spending some "quality" time with.

In any event, I wanted to get your thoughts on roadtesting e-Fuses.

Here's some facts about the product:

EVB-TCKE805NA is a TCKE805NAe-Fuse IC evaluation board (EVB). It is an evaluation board for supporting TCKE8xx series-design. The passive components required to operate IC are mounted, enabling easy operation check and characterization. The evaluation board features:
• Input voltage range from 4.4V to 18V
• Output limit current range from 0.5A to 5.0A adjustable
• Adjustable slew rate
• Active high enable control
• Auto retry function
• Auto discharge
• Available in 3x3mm WSON10B package

Here's the schematic

image

Here's the documentation:

Instruction Manual

Here's my poll:

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  • embeddedguy
    embeddedguy over 1 year ago

    This is an innovative concept. i.e. e-Fuse. But wondering weather it could be used for AC mains line protection.

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  • saadtiwana_int
    saadtiwana_int over 1 year ago

    eFuses are excellent devices for designers. They save a lot of design headache on the  power entry side, especially when you expect the input power to be problematic. I got introduced to them few years ago and have been a big fan since. Great devices to roadtest! Slight smile

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  • shabaz
    shabaz over 1 year ago

    It would be pretty neat to see this designed onto a tiny PCB soldered to the back of a push-switch, just like a mechanical resettable fuse. All ready for retrofitting into the chassis of projects that could benefit from this. I think if there was a push-button that pulled the EN pin low, then that would reset it.

    But, also might be good as a per-board fuse, e.g. polyfuse alternative.

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  • michaelkellett
    michaelkellett over 1 year ago

    This is an interesting device. It looks as if it can double up as a high side switch. In serious numbers it's about £0.50 and they offer versions with over-voltage clamping. It needs some supporting components but does make a pretty compact and low cost solution and can handle quite large currents. I would certainly be interested in testing one.

    MK

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  • DAB
    DAB over 1 year ago

    This unit could be fun to play with.

    I would be very interested in someone really putting this type of device through its paces.

    How about a design challenge?

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  • Jan Cumps
    Jan Cumps over 1 year ago in reply to robogary

    I missed the pun :).

    robogary said:
    I would expect it to be applied like a category 1 where transients are "known and controlled" .  

    Yes. That's how I read the specs too.

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  • robogary
    robogary over 1 year ago in reply to Jan Cumps

    MOVs are used for voltage transients. The transients are fast, heat usually doesnt get chance to dissipate to the enviroment. The heat is localized and often the end result is the MOV itself shorts and then vaporizes. I was being tongue in cheek about SUP. 

    The e Fuse spec doesn't list the transient spec, I would expect it to be applied like a category 1 where transients are "known and controlled" .  

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  • Jan Cumps
    Jan Cumps over 1 year ago in reply to robogary

    I wonder if this type of device could be a MOV replacement. MOVs are for inrush current, and need decent real estate to avoid that they evaporate.

    We can't avoid that an amount of heat needs to be generated, and survived, to make a MOV do its MOV work. Would a device of this size be able to pass that heat on to the environment?

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  • robogary
    robogary over 1 year ago

    image

    I'm too tempted to try it out as as an SUP or MOV replacement  :-) 

    I wonder how it performs on short circuit current at the output with a big 30A DC supply feeding it   :-)  

    Wheres the AC version ?  :-) 

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  • rsc
    rsc over 1 year ago

    I could see adding one of these to a raspberry pi project for both the fuse and on/off functions.

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