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Viper53e hardware ?

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jbrewster
Visitor

‎2024-07-17 08:13 AM - last edited on ‎2024-07-17 11:02 AM by

I have a hardware question about the viper53e chip.  For VDD startup voltage, what is the correct voltage to guarantee the mosfet switching will start?  I have seen some examples where 11.5V was not enough, and curious to know what the is the best VDD to use at startup, to guarantee the mosfet will turn on?

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Peter BENSCH
ST Employee

‎2024-07-17 11:16 AM

Welcome @jbrewster, to the community!

the data sheet of the VIPER53E mentions a voltage of min 10.2V, typ 11.5V and max 12.8V for VDDon.

So if you want to be guaranteed to reach the switch-on threshold, you have to take the worst case value, in this case the maximum value of 12.8V.

Hope that helps?

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.

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Peter BENSCH
ST Employee

‎2024-07-17 11:16 AM

Welcome @jbrewster, to the community!

the data sheet of the VIPER53E mentions a voltage of min 10.2V, typ 11.5V and max 12.8V for VDDon.

So if you want to be guaranteed to reach the switch-on threshold, you have to take the worst case value, in this case the maximum value of 12.8V.

Hope that helps?

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.
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