Switch operating conditions

Zhang Hui

Other Parts Discussed in Thread: TPS27081A, CSD16301Q2

For tps27081a, some combinations of current and rise time gives current too strong for the switching time. Would the device be safe under them?

Hui

over 10 years ago

0 Ron Michallick over 10 years ago

TI__Guru**** 165146 points

Hui,

The device application engineer will answer your question Monday US time.

0 Zhang Hui over 10 years ago in reply to Ron Michallick

Intellectual 625 points

Please give us some advices.

0 Michael J Schultis over 10 years ago in reply to Zhang Hui

TI__Mastermind 24975 points

Hello Hui,

The rise times in Table 2 were taken under light load conditions.

Additionally, the 9.5A and the 129ns specifications are taken under different conditions and will not necessarily happen at the same time.

Best,

Michael

0 Zhang Hui over 10 years ago in reply to Michael J Schultis

Intellectual 625 points

So maybe additional testing is needed to warrant particularly harsh operating conditions?

0 Michael J Schultis over 10 years ago in reply to Zhang Hui

TI__Mastermind 24975 points

Hui,

Yes, additional testing may be necessary.

As long as the device is used within the datasheets specified operating conditions, the device will operate properly. If the device is stressed beyond these conditions, then we cannot guarantee the proper operation of the device.

Best,
Michael

0 Zhang Hui over 10 years ago in reply to Michael J Schultis

Intellectual 625 points

We have seen lots of MOSFETs like www.ti.com/.../csd16301q2.pdf with di/dt rating of 200A/us or larger. This is listed under "reverse recovery" testings. As this is an included parameter in the specification, does this means such TI device (like csd16301q2) can stand the 200A/us slope and the induced near-field / immediate vicinity EM field?

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Switch operating conditions