Part Number: ISO7841
We would like to use ISO784xDWW device in unit tested according to EN61010-1, however we do have some problems with understanding ISO784xDWW isolation rating. In the datasheet it is written that DWW package is rated for over-voltage category IV for mains voltage <=1000Vrms. And in available certificate from TUV maximum reinforced isolation working voltage is specified as 1000Vrms. However in TUV certificate no over-voltage category is mentioned.
Comparing some test voltage levels from the data sheet and figures from TUV certificate with requirements from the standard we and our certification house have some doubts if CAT IV or CAT III at 1000Vrms reinforced insulation is possible.
Also in data sheet creepage/clearance distance for the part is declared as >14.5mm, however for CAT III and 1000Vrms working voltage distances for pollution degree 1 should be >16mm (however this can be solved with the potting or similar tricks)
Does anybody know where to get complete TUV test report number 72112853-100 to see how they really tested this part, with which voltage levels/wave shapes and what are correct ratings?
If TI is not willing to share this test report with us, can test report be send directly to our certification house?
Please provide your email address so I can send a more detailed TUV report.
Isolation Products, Texas Instruments
In reply to Saleem Marwat:
Hi, I have send request for private message communication with you.
In reply to robert kovacic:
Ok, I'll wait for your email address.
Alternatively, you can email me at firstname.lastname@example.org.
My TUV contact informed me on Friday that he'll provide details you've requested by the end of this week.
I apologize for the delay but I hope you understand that this issue is not under the direct control of Texas Instruments. I'll continue to push for answers.
This issue has been resolved through email communication.
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.