Part Number: ISO7731
My customer is asking for the lifetime curves request under the condition below , could you please offer it ?
As described in section 10.2.3.1 of ISO7731 datasheet, the industry standard lifetime / TDDB test for isolation barrier is done in 2-pin configuration (shown in Figure 26) where all pins of device are shorted together in two groups to create two pins across the isolation barrier and hence, the device cannot be powered. The ambient temperature during the test is set to 150C, as also indicated in Figure 27. Hence, this data is applicable for all the temperatures upto 150C ambient temperature.
Since 2-pin configuration is the worst-case test which stresses all the isolation channels of device, the result is expected to similar or better when device is tested in powered condition where only two pins of device can be applied high voltage and stressing only a few channels of device.
Please do let customer know that the TDDB data shown in datasheet applies to powered test conditions as well, including the test conditions that you have listed out. Thanks.
We are glad that we were able to resolve this issue, and will now proceed to close this thread.
If you have further questions related to this thread, you may click "Ask a related question" below. The newly created question will be automatically linked to this question.
In reply to Koteshwar Rao:
Thanks for your prompt reply , i will reply customer and keep you posted.
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. 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.