This question has been asked on TI's E2E forum for other parts in this family. See the 2nd 60950 report link that Eric posted in this discussion thread: https://e2e.ti.com/support/interface/usb/f/1008/t/563031
It might be worth opening a new thread for this particular part number to see if there is another IEC 60950 report that TI would share. Or maybe this report would suffice. Cheers, Adam in Atlanta [email protected] Sent from my iPad > On Mar 5, 2018, at 4:42 PM, Ted Eckert > <[email protected]> wrote: > > I agree with Mr. Woodgate and I can add a little more information. UL 2367 is > generally considered equivalent as Test Program 2 of Annex CC. Most NCBs will > accept it as such and you should be able to place a statement in your report > indicating the equivalency. Not all NCBs will necessarily accept the > equivalence, but I have yet to run into an issue with integrated circuits > approved under UL 2367. > > Ted Eckert > Microsoft Corporation > > The opinions expressed are my own and do not necessarily reflect those of my > employer. > > From: John Woodgate <[email protected]> > Sent: Monday, March 5, 2018 1:07 PM > To: [email protected] > Subject: Re: [PSES] IEC60950-1 Limited Power Source via IC current limiter > > The standard says '...meets a suitable test program as given in Annex CC' > [not Annex C]. It does not say 'shall meet the test program given in Annex > CC'. As you know, the manufacturer is permitted to decide (and document) > that a part meeting UL2367 is acceptable, and it would be up to a regulatory > authority to challenge that. It seems unlikely that UL 2367 would be > deficient, since this is a precaution against fire, which is a major concern > of UL, of course. > > John Woodgate OOO-Own Opinions Only > J M Woodgate and Associates www.woodjohn.uk > Rayleigh, Essex UK > On 2018-03-05 20:11, Charlie Blackham wrote: > All > > Client has designed a USB port with the DC power protected by a TI TPS2052B > Current limiter: > Component details: www.ti.com/product/TPS2052B/description > Component is UL recognised component under QVGS2.E169910 which is based on UL > 2367 > > > 2.5 Limited power sources > c) a regulating network, or an integrated circuit (IC) current limiter, > limits the output in compliance with Table 2B, both with and without a > simulated single fault (see 1.4.14) in the regulating network or the IC > current limiter (open circuit or short circuit). A single fault between the > input and output is not conducted if the IC current limiter meets a suitable > test program as given in Annex CC; > > Annex CC requires appears to require quite extensive testing of the > component, and I can’t tell whether a component recognised against UL2367 > would meet this or not. > > The issue, is that if they s/c the protection component, the output may no > longer be LPS – we have provision to fit a suitable fuse on the board, but > would prefer not to, so would be grateful for any advice > > Thanks > Charlie > > > Charlie Blackham > Sulis Consultants Ltd > Mead House > Longwater Road > Eversley > RG27 0NW > UK > Tel: +44 (0)7946 624317 > Email: [email protected] > Web: www.sulisconsultants.com > Registered in England and Wales, number 05466247 > > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society emc-pstc > discussion list. To post a message to the list, send your e-mail to > <[email protected]> > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Attachments are not permitted but the IEEE PSES Online Communities site at > http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used > formats), large files, etc. > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > Scott Douglas <[email protected]> > Mike Cantwell <[email protected]> > > For policy questions, send mail to: > Jim Bacher <[email protected]> > David Heald <[email protected]> > > > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society emc-pstc > discussion list. To post a message to the list, send your e-mail to > <[email protected]> > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Attachments are not permitted but the IEEE PSES Online Communities site at > http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used > formats), large files, etc. > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > Scott Douglas <[email protected]> > Mike Cantwell <[email protected]> > > For policy questions, send mail to: > Jim Bacher <[email protected]> > David Heald <[email protected]> > > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society emc-pstc > discussion list. To post a message to the list, send your e-mail to > <[email protected]> > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Attachments are not permitted but the IEEE PSES Online Communities site at > http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used > formats), large files, etc. > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > Scott Douglas <[email protected]> > Mike Cantwell <[email protected]> > > For policy questions, send mail to: > Jim Bacher <[email protected]> > David Heald <[email protected]> - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
