TPS549A20: Quality info: LU Test Result

Ethan Frommer

Part Number: TPS549A20

Hi Team,

OPN TPS549A20RVER does not have LU test results that my customer requires.

For most devices, this information is publicly available here: https://www.ti.com/qualificationsummary/qualsumm/home

Please specify if this device is LU Level-A or B certified and when this data will be publicly available on the page above.

Thanks!

11 months ago

0 Tahar Allag 11 months ago

TI__Mastermind 30520 points

Hello Ethan,

Yes, you are correct, it is not listed as part of the qualification summary. Typically, if it qualified, it will be listed in there.

I have to check internally with our qualifications team and see if this device is qualified for Latch up and which one.

Please allow until early next week due to US Thanksgiving Holiday. I should be able to get you an answer early next week.

Thanks!

Tahar

0 Tahar Allag 11 months ago in reply to Tahar Allag

TI__Mastermind 30520 points

Hello Ethan,

Latch-up was done on this device according to JESD78.

I am still checking it was not published

Thanks!

Tahar

0 Ethan Frommer 11 months ago in reply to Tahar Allag

TI__Intellectual 1670 points

Hi Tahar,

Please specify as well if it is tested to latch-up level A or B current injection levels.

If it was tested to level B, please share the injection current that it passed with.

0 Tahar Allag 11 months ago in reply to Ethan Frommer

TI__Mastermind 30520 points

Hello Ethan,

it is added to TI.COM now

We are following the Latch-Up standard (JESD78) per the application now below. I am not sure what A and B that you are referring too, but the current level is 100mA per JESD78. The power supply receives an over-voltage stress, a voltage pulse. The pulse widths can be chosen from a range of values but most often in the industry, 2ms to 10ms is preferred. The current pulse height is 100 mA while the over-voltage is 1.5 x VMAX (operating).

www.ti.com/.../scaa124.pdf

Thanks!

Tahar

0 Ethan Frommer 11 months ago in reply to Tahar Allag

TI__Intellectual 1670 points

Hi Tahar,

Thanks for following up.

If we passed at 100 mA that would be level A - see below the differences in the JESD78 level A and B. If the device fails at level A, level B can be met but the injection current must be specified in the qualification summary.

0 Tahar Allag 11 months ago in reply to Ethan Frommer

TI__Mastermind 30520 points

Hi Ethan,

Yes, 100mA is passed per JESD78

Thanks

Tahar

Power management

Power management forum

TPS549A20: Quality info: LU Test Result