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Why 2 P-channels MOSFET have been used In Vbus_EN_SRC? Can we use just one?

Gjain.1
Associate II

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1 ACCEPTED SOLUTION

Accepted Solutions
Peter BENSCH
ST Employee

The two MOSFETs are important to be able to control the current flow in both directions. It is entirely possible that there is a power source on both sides, so that with only one MOSFET the current can flow through the parasitic body diode of the switched-off MOSFET.

Good luck!

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.

/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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1 REPLY 1
Peter BENSCH
ST Employee

The two MOSFETs are important to be able to control the current flow in both directions. It is entirely possible that there is a power source on both sides, so that with only one MOSFET the current can flow through the parasitic body diode of the switched-off MOSFET.

Good luck!

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.

/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.