UCC21750: Unipolar power supply in UCC21750

Shubham Dhiman

Part Number: UCC21750

Hi All,

For a unipolar gate power supply, is it okay to leave the Vee2 pin floating and connect isolated power supply output directly to Vcc2 and Com of the IC ? if not what is the alternative?

Thanks,

Best regards,

Shubham Dhiman

over 4 years ago

0 Don Dapkus over 4 years ago

TI__Guru**** 189401 points

Hi, Shubham,

Our office is currently closed for the US Thanksgiving holiday. One of my colleagues will get back to you on Monday, US time.

0 Andy Robles over 4 years ago

TI__Genius 13760 points

Hi Shubham,

Welcome to E2E!

The VEE pin is used as the reference point in some of the internal circuitry of the device and should not be left floating. When using a unipolar power supply, the VEE pin should be shorted to COM.

Let me know if there's any additional questions.

Best regards,

Andy Robles

Power management

Power management forum

UCC21750: Unipolar power supply in UCC21750