Design Article
New Approaches to Managing High-Current Transient Loads in Battery-Powered Handheld Devices
Fabien Franc, Applications Manager, ON Semiconductor
11/23/2009 7:00 AM EST
When a very high current is drawn directly from the battery, the terminal voltage drops momentarily, primarily due to the battery's series resistance. Now, the combination of very large-value capacitor components (such as s supercapacitors) and advanced circuit designs makes it possible for these peak currents to be supplied without battery stress. This article looks at the specifics and calculations involved in this problem and solution.
To read the article as web- formatted ".mht document" (MIME HTML) (no registration required), click here.
About the author
Fabien Franc is Applications Manager at ON Semiconductor. He is responsible for Catalyst Group LED drivers and other Catalyst analog/mixed-signal products. Fabien has over 20 years of experience in the semiconductor, telecommunications and computing markets and was previously an applications engineer at California Micro Devices supporting power management ICs and analog products. He earned an MS degree in electrical engineering from the Swiss Federal Institute of Technology in Lausanne (EPFL).
Navigate to related information




bob13013
12/2/2009 11:27 AM EST
Your article might be very interesting. Unfortunately, I shall never read it since neither of my preferred browsers (Firefox and Opera) support this format.
Sign in to Reply
peculus
12/2/2009 12:33 PM EST
It would help if the article was in a common format so everyone could read it.
Sign in to Reply
Doctek
12/2/2009 1:25 PM EST
I second the above. Do you want us to drop Planet Analog? If so stick with non-standard formats. Otherwise, go back to pdfs!
Sign in to Reply
snuz2
12/2/2009 6:04 PM EST
We're not permitted to use IE here for security reasons, so I also can not read it. Please everyone who can't read it leave a nice comment like this.
Sign in to Reply
RWatkins
12/3/2009 9:49 AM EST
Providing this article in its totality in ONLY MIME format is pretty mean to those of us who are using our work computer with Mozilla and WinXP. It is UNREADABLE!
Sign in to Reply
RFPowerMaster
12/3/2009 10:02 AM EST
Same comment as by RWatkins. Please use a format that can display the message on Windows XP and using Mozilla Firefox, without having to register.
Sign in to Reply
don3605
12/3/2009 1:10 PM EST
I downloaded the unmht add on from mozilla.org and it allowed me to read the free version of the article.
Sign in to Reply
Jdavidde40
12/9/2009 12:14 PM EST
While I have no trouble viewing hte MIME formated doc, it is not very "portable" in terms of saving or sharing. PDFs are not nearly as good looking, but they do have their advantages.
Great article by the way.
Sign in to Reply
dilkie
1/14/2010 6:53 AM EST
This is the stupidest thing I ever saw. A web publishing company that tries to force it's "customers" back to using Microsoft's Internet Explorer... What are you folks thinking?
Sign in to Reply
JoshuaJohnston
1/25/2010 11:40 PM EST
I can open the MHT but yes, it does require saving the file first and opening from disk (or loading the page in IE to start with). Next time how about something a bit more suitable? PDF perhaps?
Sign in to Reply
BicycleBill
1/26/2010 10:41 AM EST
You can see the article as a pdf at:
http://i.cmpnet.com/powermanagementdesignline/2009/11/C0477edited.pdf
but please note, some of the equations are "distorted" and crunched, due to an anomaly between the Microsoft Equation editor (used to generate the equations) and Adobe Acrobat (which produces the pdf). We are still trying to figure it out.Bill Schweber, Site Editor
Sign in to Reply