VIPER011XS BUCK topology

APC.1 · ‎2022-04-12

Could someone explain why POWER EARTH and GND (PIN 1) are tied togheter?

This not make sense for me.

Peter BENSCH · ‎2022-04-12

The best way to show this is with a drawing:

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.

View solution in original post

Peter BENSCH · ‎2022-04-12

Welcome, @APC.1, to the community!

You got confused by the symbols:

the three dashes of different lengths indicate power earth
the small white triangle is an internal connection of the schematic that must not be connected to ground

This representation was chosen because the VIPer011 is actually a flyback converter whose GND pin is not connected to GND in this buck converter, but realizes the output.

Does it answer your question?

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.

APC.1 · ‎2022-04-12

We need to conect +VOUT 25.8VCC and power earth instead GND?

Peter BENSCH · ‎2022-04-12

The best way to show this is with a drawing:

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.

APC.1 · ‎2022-04-12

Great!! exactily what I did.

Peter BENSCH · ‎2022-04-12

Excellent!

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

/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.