RE: UPAMD updated goals
Hi Piotr,
Thanks for pointing out my misunderstanding on power sink.
Indeed if the device wants to source power from its battery, that should
be no issue for the adapter.
If the adapter has nothing to do with sharing power, we may want to leave it
out of the discussion.
For medical is it not required to have higher isolation and smaller
leakage currents? This may impact cost and performance (like efficiency).
With regards,
阿勇 Arjan Strijker
IC architect, Product Line Power & Lighting Solutions (PLS)
Business Line PLS, BU High Performance Mixed Signal (HPMS)
NXP Semiconductors
Gerstweg 2, Room BZ0.103, 6534AE Nijmegen, The Netherlands
Tel: +31 24 353 4661
E-mail: arjan.strijker@xxxxxxx, www.nxp.com
-----Original Message-----
From: upamd@xxxxxxxx [mailto:upamd@xxxxxxxx] On Behalf Of Piotr Karocki
Sent: 2010 Jul 28 12:56 PM
To: upamd@xxxxxxxx
Subject: RE: UPAMD updated goals
arjan strijker [arjan.strijker@xxxxxxx] wrote:
>> i. Device may be capable of being a source as well as a sink of power
> No, just a power source, no power sink.
Device, not adapter. Adapter (power supply) could be only power source.
>> ii. Able to share power for mission critical or business critical applications if willing
> Only if this does not make the adapter more complicated.
Adapter has nothing with it - it render only (some) devices more complicated. Phone would be probably only sink, but laptop could be sink and source (for e.g. phone).
>> ii. Consider isolation to meet medical power needs
> No, I do not believe that medical will use universal adapters.
> Also this will make all adapters more expensive for just a few medical applications.
> Maybe a special version universal adapter that can identify itself as being suitable for medical applications.
Medical devices - also devices compatible with IEEE 11073-30200 series, some of them (almost everyone of them) are to be at home.
Medical restrictions are not meant "to be harder", but "more safely"; as we want power supply to last many years, it could be somewhat more expensive.