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GEspo.2
Visitor II
Jul 18, 2022 9:12 AM UTC
Solved

VNH9013Y thermal sensor

Hello everybody,

I'm using the VNH9013 H-Bridge thermal sensor. Datasheet states on first page that thermal sensor coefficient is -8.1 mV/K, while on page 10 says -2 mV/K.

Any ideas on what is the right temperature coefficient?

Thanks in advance.

This topic has been closed for replies.
Peter BENSCH
Peter BENSCHBest answer
ST Technical Moderator
Jul 18, 2022 12:53 PM UTC

Welcome, @GEspo.2​, to the community!

The temperature sensor in the VNH9013Y is realised by a diode, i.e. a pn junction. If a constant current is fed into such a pn junction, the resulting forward voltage has a temperature coefficient of -2mV/K. One can therefore assume a typing error on the first page.

If the problem is resolved, please mark this topic as answered by selecting Select as best. This will help other users find that answer faster.

Regards

/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

1 reply

Peter BENSCH
Peter BENSCHBest answer
ST Technical Moderator
Jul 18, 2022 12:53 PM UTC

Welcome, @GEspo.2​, to the community!

The temperature sensor in the VNH9013Y is realised by a diode, i.e. a pn junction. If a constant current is fed into such a pn junction, the resulting forward voltage has a temperature coefficient of -2mV/K. One can therefore assume a typing error on the first page.

If the problem is resolved, please mark this topic as answered by selecting Select as best. This will help other users find that answer faster.

Regards

/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.