UCC27201: UCC27201DR external bootstrap diode

Cheney_Sun

Intellectual 595 points

Part Number: UCC27201

Hi TI EE：

Please help to make sure if UCC27201DR needing external bootstrap diode as bellow figure.

Thank you!

Best Regards

Cheney_Sun

over 5 years ago

0 Richard Herring over 5 years ago

TI__Mastermind 21160 points

Hello Cheney,
The need for an external boot diode is determined by whether the application is at high frequency and high gate charge MOSFETs. Most applications do not require this external diode, it is likely that yours does not.
Refer to the application note SNVA083 on guidance regarding the need for an external diode, and selection guidelines.
Link is: www.ti.com/.../snva083b.pdf

Regards,
Richard Herring

Power management

Power management forum

UCC27201: UCC27201DR external bootstrap diode