UCC27714DR questions

Patrick Chen

Hello,

Below is customer topology that integrated shunt resistor. Do VSS and COM of gate driver need to connect together? Per datasheet description, low side has level shift so don't need connect together, right? Thank you.

Patrick

over 9 years ago

0 Wei Zhang over 9 years ago

TI__Intellectual 2061 points

Hello Patrik,

Your understanding is correct. There is a level shifter from VSS to COM which can handle -6V/5V. Here is a reference design you could take a look.

Here is a reference how you can process the sensed signal to EN.

Please let me know if you have any questions.

Wei

0 Wei Zhang over 9 years ago in reply to Wei Zhang

TI__Intellectual 2061 points

I am sorry the circuit diagram didn't show up. Let me try again.

Hello Patrik,

Your understanding is correct. There is a level shifter from VSS to COM which can handle -6V/5V. Here is a reference design you could take a look.

Here is a reference how you can process the sensed signal to EN.

Please let me know if you have any questions.

Wei

0 Wei Zhang over 9 years ago in reply to Wei Zhang

TI__Intellectual 2061 points

UCC27714 Answers.pdfHere is the attachment. Please let me know if there is any questions. Thanks a lot.

Power management

Power management forum

UCC27714DR questions