INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Jobs

Power Electronic Packaging

Power Electronic Packaging

(OP)
Hi,
I noticed that there almost nobody post anything related to power packaging, but this is a such important field nowadays, since the power density is increasing dramatically. Anybody know that if there are some other forums talking about power electronic packaging? Thanks!

RE: Power Electronic Packaging

EPakg,

What do you mean by "power packaging"? Why would this be different from packaging anything else?

--
JHG

RE: Power Electronic Packaging

(OP)
Power electronic packaging is different from IC package, it needs to deal with high current, high voltage and high power loss. Current could be hounds of amps or even thousand amps, voltage is at least 650V, normally is 1200v, or even higher, 6KV,nowadays, 10 KV is also available. The popular board used is DBC, direct-bond-copper.

RE: Power Electronic Packaging

EPakg,

From a mechanical point of view, high voltage and high current systems require safety stickers on any access points, and maybe, secure fasteners. High power loss means we have to dump heat, something we normally do anyway, with electronics.

--
JHG

RE: Power Electronic Packaging

It is my experience that posters will post in relevant, or even non-relevant forums on the this site. The fact that there simply aren't that many postings asking for help with "power packaging" belies the supposed need for a separate forum, since anyone really needing help isn't going to care about the fact that an exact forum for their question doesn't exist.

TTFN
FAQ731-376: Eng-Tips.com Forum Policies
[IMG http://tinyurl.com/7ofakss]
Need help writing a question or understanding a reply? forum1529: Translation Assistance for Engineers


Of course I can. I can do anything. I can do absolutely anything. I'm an expert!
There is a homework forum hosted by engineering.com: http://www.engineering.com/AskForum/aff/32.aspx

RE: Power Electronic Packaging

(OP)
Yeah, thermal management is quite important for power packaging.
If you happen to know any forum that discuss power packaging, please let me know, thanks guys.

RE: Power Electronic Packaging

EPakg,

Ask a question!

--
JHG

RE: Power Electronic Packaging

EPakg,
I'm a mechanical engineer doing electronic packaging for high power electronics. I've done "low" power packaging too. The only difference I see from low power packaging is:
-Insuring that doors and panels have warning switches that sound an alarm (either audible or on a display) if a door or panel is opened if power is ON or even shut the power OFF
-EStop switches are provided in prominent locations to cut the power in case of emergency
-Thermal management often requires cold water cooling of inductors, transformers and IGBT assemblies using thermal grease, phase-change thermal pads, cold plates and air-to-liquid heat exchangers; this means a thermal system simulation must be performed using tools such as AFT Fathom 8
-Electrical creep and arc paths are of high concern.
-Warning and caution labeling of high power components or compartments are required.
-EMI/EMC is a usually a concern
-Routing of cables becomes a big deal because of the size and bend radius of the power cables (usually 4/0).
-Because condensation (and sometimes leakage) occurs with the cold water cooling network, liquid sensors, drains, and dehumidifiers become necessary.

So there ARE people who read this forum that do power electronic packaging. What do you need to know? If you're an EE maybe you should leave it to the ME to do because he usually has more of the relevant skills to do it.

Tunalover

RE: Power Electronic Packaging

For the thermal part I strongly suggest

Cooling Techniques for Electronic Equipment, 2nd Edition by Dave Steinberg.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close